author | Claus Gittinger <cg@exept.de> |
Fri, 23 Aug 2013 15:00:45 +0200 | |
changeset 15688 | 1a99731256ba |
parent 15659 | d39d7e301ecd |
child 15851 | 62426f2047ba |
child 18091 | abbcac10730e |
permissions | -rw-r--r-- |
1 | 1 |
" |
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COPYRIGHT (c) 1988 by Claus Gittinger |
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All Rights Reserved |
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|
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
|
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be provided or otherwise made available to, or used by, any |
|
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other person. No t itle to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libbasic' }" |
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||
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Object variableSubclass:#Context |
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instanceVariableNames:'flags sender* home receiver selector searchClass method lineNr |
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retvalTemp handle*' |
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classVariableNames:'SingleStepInterruptRequest' |
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poolDictionaries:'' |
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category:'Kernel-Methods' |
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! |
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||
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!Context class methodsFor:'documentation'! |
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|
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copyright |
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" |
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COPYRIGHT (c) 1988 by Claus Gittinger |
|
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All Rights Reserved |
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|
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This software is furnished under a license and may be used |
|
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only in accordance with the terms of that license and with the |
|
31 |
inclusion of the above copyright notice. This software may not |
|
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be provided or otherwise made available to, or used by, any |
|
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other person. No t itle to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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||
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documentation |
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" |
|
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Contexts represent the stack frame objects, which keep the processing |
41 |
state of a method or block (i.e. its local variables, temporaries etc.) |
|
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Every message send adds a context to a chain, which can be traced back via |
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the sender field. The context of the currently active method is always |
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accessable via the pseuodoVariable called 'thisContext'. |
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The actual implementation uses the machines stack for this, building real |
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contexts on demand only, whenever a contexts is needed. Also, initially these are |
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allocated on the stack and only moved to the heap, when a context outlives its |
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activation. |
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|
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For both method- and block-contexts, the layout is the same. |
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For method contexts, the home-field is nil, while for block contexts the home- |
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field is either the context of its surrounding block (i.e. the context of the |
53 |
block, in which the receiving block was created, if its a nested block) or of |
|
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its home method. |
55 |
||
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Cheap blocks are blocks which do not refer to any locals or the receiver (currently), |
57 |
but only access globals, class vars or arguments (for example: [:a :b | a < b] is a cheap block). |
|
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Cheap blocks do not need a home and therefore never require that their home context be moved |
|
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to the heap. Contexts of cheap blocks do not have a home context - their home field is also nil. |
|
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|
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LineNumbers vs. program counter: |
62 |
||
63 |
Due to the compilation to machine code, methods and/or block do not |
|
216 | 64 |
always (actually: do seldom) contain bytecodes. Thus, there is no such concept |
65 |
as a bytecode p-counter. To support debugging, the linenumber within the |
|
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original source is instead remembered when a send or loop entry is performed. |
|
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Since linenumbers are not always sufficient for debugging (multiple sends in one |
|
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line), this may be changed in future versions to a character offset, giving |
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the position of the selector in the source. |
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|
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Restartable / Returnable contexts: |
72 |
||
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In previous versions (up to ST/X 2.10.5), every method stored enough |
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information in the context for that one to be restartable later (for example, |
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via the debugger's restart button). As stc is supposed to generate portable C-code, |
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this means that technically, a setjmp needs to be done at the beginning of the method |
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in order to have a resumable (and portable) state (however, inline asm code does this setjmp, |
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so it is much faster than the libc-setjmo, which stores a lot of additional state, not needed here). |
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With 2.10.6, this is now an stc-compiler option, and the system as delivered is compiled |
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to only create restartable contexts for those which contain blocks or are marked as special |
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via a directive. |
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This resulted in an overall speedup of roughly 10-20% percent, depending on the type of CPU. |
|
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However, it makes most methods non-restartable (however, abort, signal handling and unwind blocks |
|
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work as usual). |
|
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In practice, this was reported to be not a severe limitation and all users were happy |
86 |
to trade the increased performance for that slight inconvenience. |
|
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(during development, this is seldom a problem, since interpreted methods are always |
|
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returnable and restartable) |
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If you do not like this, you should recompile all classes with stc's '-optContext' flag. |
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Resuming contexts: |
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||
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Strictly speaking, ST/X does not support a context to be resumed (because the setjmp is |
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not done on the caller side, but in the callee). |
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However, it does support a forced return (i.e. non-local-return) from a context. |
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Thus, resume of a context is implemented by forcing a return from the context |
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which was created by the method called from the first one. The effect is the same. |
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||
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Returning from a dead method: |
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||
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Block-return from an outlived context (i.e. its home method has already returned) |
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is now rewarded by an invalidReturn exception - it used to be a noop in previous |
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releases. The blue book described this to be a noop, but other Smalltalk implementations |
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changed this to be an invalid operation - a good decision, as it makes debugging much easier. |
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[instance variables:] |
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flags <SmallInteger> used by the VM; never touch. |
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contains info about number of args, |
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locals and temporaries. |
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|
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sender <Context> the 'calling / sending' context |
113 |
This is not directly accessable, since it may |
|
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be a lazy context (i.e. an empty frame). |
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The #sender method cares for this. |
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home <Context> the context, where this block was |
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created, or nil if its a method context |
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There are also cheap blocks, which do |
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not need a reference to the home context, |
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for those, its nil too. |
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|
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receiver <Object> the receiver of this message |
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|
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selector <Symbol> the selector of this message |
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searchClass <Class> the class, where the message lookup started |
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(for super sends) or nil, for regular sends. |
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lineNr <SmallInteger> the position where the context left off |
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(kind of p-counter). Only the low 16bits |
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are valid. |
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retValTemp nil temporary - always nil, when you see the context |
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(used in the VM as temporary) |
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handle *noObject* used by the VM; not accessable, not an object |
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|
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method the corresponding method |
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|
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<indexed> arguments of the send followed by |
142 |
locals of the method/block followed by |
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temporaries. |
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|
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[errors:] |
146 |
CannotReturnError raised when a block tries |
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to return ('^') from a method context |
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which itself has already returned |
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(i.e. there is no place to return to) |
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WARNING: layout and size known by the compiler and runtime system - do not change. |
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[author:] |
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Claus Gittinger |
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|
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[see also:] |
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Block Process Method |
159 |
( contexts, stacks & unwinding : programming/contexts.html) |
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" |
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! ! |
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|
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!Context class methodsFor:'initialization'! |
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initialize |
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CannotReturnError notifierString:'invalid return; method cannot return twice'. |
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CannotResumeError notifierString:'invalid resume'. |
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SingleStepInterruptRequest isNil ifTrue:[ |
170 |
SingleStepInterruptRequest := QuerySignal new. |
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SingleStepInterruptRequest nameClass:self message:#singleStepInterruptRequest. |
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SingleStepInterruptRequest notifierString:'single step'. |
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] |
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"Modified: 6.5.1996 / 16:46:03 / cg" |
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! ! |
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||
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!Context class methodsFor:'Signal constants'! |
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|
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cannotResumeSignal |
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"return the signal used when a method is tried to be resumed, which cannot" |
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^ CannotResumeError |
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! |
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185 |
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186 |
cannotReturnSignal |
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"return the signal used when a method is tried to be returned twice |
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or, when some dead context is unwound or restarted." |
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^ CannotReturnError |
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! |
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invalidReturnSignal |
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"return the signal used when a method is tried to be returned twice |
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or, when some dead context is unwound or restarted." |
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<resource: #obsolete> |
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self obsoleteMethodWarning:'use #cannotReturnSignal'. |
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^ self cannotReturnSignal. |
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! |
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parents:
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singleStepInterruptRequest |
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"return the dummy query signal to ask for single stepping" |
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^ SingleStepInterruptRequest |
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"Created: 6.5.1996 / 16:46:32 / cg" |
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! ! |
209 |
||
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!Context class methodsFor:'error handling'! |
211 |
||
212 |
showWhereWeCameFrom |
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"show the stack backtrace: at least 4 levels, or until the first |
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send to a non-collection object (because we want to know, |
215 |
which non-collection send invoked a bad collection-method)." |
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|con count| |
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||
219 |
con := thisContext sender sender. |
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count := 0. |
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[ |
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(' from ' , con printString) errorPrintCR. |
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con := con sender. |
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count := count + 1. |
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] doWhile:[con notNil and:[count < 5 or:[con receiver isCollection]]]. |
226 |
"/ one more |
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con notNil ifTrue:[ |
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(' from ' , con printString) errorPrintCR. |
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]. |
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231 |
" |
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#() asSet add:nil |
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" |
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! ! |
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||
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!Context class methodsFor:'queries'! |
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isBuiltInClass |
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"return true if this class is known by the run-time-system. |
240 |
Here, true is returned." |
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^ true |
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"Modified: 23.4.1996 / 15:58:00 / cg" |
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! ! |
246 |
||
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!Context class methodsFor:'special searching'! |
248 |
||
249 |
findFirstSpecialHandle:searchForHandle raise:searchForRaise |
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|c| |
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251 |
||
252 |
%{ |
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OBJ __c__; |
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||
255 |
__c__ = __ContextInstPtr(__thisContext)->c_sender; |
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256 |
if (!__isNonNilObject(__c__)) { |
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257 |
RETURN(nil) |
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} |
4485 | 259 |
if (__isLazy(__c__)) { |
260 |
__PATCHUPCONTEXT(__c__); |
|
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} |
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c = __c__; |
|
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%}. |
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^ c findSpecialHandle:searchForHandle raise:searchForRaise |
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! ! |
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||
12573 | 267 |
!Context methodsFor:'Compatibility-Squeak'! |
268 |
||
269 |
longStack |
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15644 | 270 |
^ self fullPrintAllString |
12573 | 271 |
! ! |
272 |
||
7261 | 273 |
!Context methodsFor:'Compatibility-VW'! |
5983 | 274 |
|
275 |
resumeWith:value |
|
276 |
"same as #resume: - visualWorks compatibility" |
|
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||
278 |
self resume:value |
|
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! ! |
|
280 |
||
623 | 281 |
!Context methodsFor:'accessing'! |
282 |
||
283 |
argAt:n |
|
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"return the n'th argument" |
|
285 |
||
1726 | 286 |
n > self numArgs ifTrue:[ |
12841 | 287 |
^ self error:'invalid arg access' |
1726 | 288 |
]. |
623 | 289 |
^ self at:n |
1726 | 290 |
|
291 |
"Modified: 12.10.1996 / 21:44:28 / cg" |
|
623 | 292 |
! |
293 |
||
294 |
argAt:n put:value |
|
295 |
"set the n'th argument - useful when the receiver should be restarted" |
|
154 | 296 |
|
1726 | 297 |
n > self numArgs ifTrue:[ |
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^ self error:'invalid arg access' |
1726 | 299 |
]. |
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300 |
self at:n put:value. |
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301 |
^ value |
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|
303 |
"Modified: 12.10.1996 / 21:44:32 / cg" |
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! |
305 |
||
306 |
args |
|
307 |
"return an array filled with the arguments of this context" |
|
308 |
||
309 |
|n| |
|
310 |
||
311 |
n := self numArgs. |
|
3130 | 312 |
n == 0 ifTrue:[ |
12841 | 313 |
"/ little optimization here - avaoid creating empty containers |
314 |
^ #() |
|
3130 | 315 |
]. |
623 | 316 |
^ (Array new:n) replaceFrom:1 to:n with:self. |
317 |
! |
|
154 | 318 |
|
623 | 319 |
argsAndVars |
320 |
"return an array filled with the arguments and variables of this context" |
|
321 |
||
322 |
|n| |
|
323 |
||
1810 | 324 |
n := self numArgs + self numVars. |
3130 | 325 |
n == 0 ifTrue:[ |
12841 | 326 |
"/ little optimization here - avoid creating empty containers |
327 |
^ #() |
|
3130 | 328 |
]. |
623 | 329 |
^ (Array new:n) replaceFrom:1 to:n with:self. |
1810 | 330 |
|
331 |
"Modified: 23.10.1996 / 16:19:41 / cg" |
|
623 | 332 |
! |
154 | 333 |
|
8687
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Define #argumentCount as ANSI alias for #numArgs
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334 |
argumentCount |
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parents:
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|
335 |
"ANSI alias for numArgs: return the number of arguments to the Block/Method" |
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336 |
|
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|
337 |
%{ /* NOCONTEXT */ |
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|
338 |
|
8913 | 339 |
RETURN ( __mkSmallInteger( (__intVal(__INST(flags)) >> __NARG_SHIFT) & __NARG_MASK) ); |
8687
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340 |
%} |
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341 |
! |
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342 |
|
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343 |
at:n put:value |
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|
344 |
super at:n put:value. |
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345 |
|
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|
346 |
"/ need some aid for optimized code - |
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parents:
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|
347 |
"/ some machines have the arguments/receiver etc. kept in register vars ... |
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need unfix, when changed via at:put:
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|
348 |
"/ the unfix updates the machine-stack version of the receiver. |
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need unfix, when changed via at:put:
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|
349 |
%{ |
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|
350 |
__UNFIXCONTEXT(self, 0); |
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|
351 |
%}. |
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|
352 |
^ value |
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|
353 |
! |
9e145a7ae670
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|
354 |
|
623 | 355 |
home |
356 |
"return the immediate home of the receiver. |
|
357 |
for block contexts, this is the methodcontext, where the block was created, |
|
15688 | 358 |
for nested block contexts, it's the surrounding block's context. |
623 | 359 |
for method-contexts this is nil." |
25 | 360 |
|
623 | 361 |
^ nil "home" |
362 |
! |
|
1 | 363 |
|
3324
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
364 |
homeReceiver |
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
365 |
"return the receiver from the context, where the receiver was defined" |
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
366 |
|
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
367 |
^ receiver |
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
368 |
|
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
369 |
"Created: / 5.3.1998 / 16:18:26 / stefan" |
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
370 |
! |
0295f7b3b208
Add #homeReceiver (as in ST80).
Stefan Vogel <sv@exept.de>
parents:
3258
diff
changeset
|
371 |
|
1 | 372 |
instVarAt:index |
69 | 373 |
"have to catch instVar access to retVal and handle - they are invalid. |
12841 | 374 |
Notice, that one of the next ST/X versions might get some syntactic |
69 | 375 |
extension to get this automatically)." |
1 | 376 |
|
12841 | 377 |
(index == %{ __MKSMALLINT(__SLOT_CONTEXT_SENDER) %} ) ifTrue:[^ self sender]."/ sender - must be accessed specially |
378 |
(index == %{ __MKSMALLINT(__SLOT_CONTEXT_RETVAL) %} ) ifTrue:[^ nil]. "/ retvalTemp - invisible |
|
379 |
(index == %{ __MKSMALLINT(__SLOT_CONTEXT_HANDLE) %} ) ifTrue:[^ nil]. "/ handle to machine stack - invisible |
|
1 | 380 |
^ super instVarAt:index |
381 |
! |
|
382 |
||
383 |
instVarAt:index put:value |
|
69 | 384 |
"have to catch instVar access to retVal and handle - they are invalid. |
12841 | 385 |
Notice, that one of the next ST/X versions might get some syntactic |
69 | 386 |
extension to get this automatically)." |
1 | 387 |
|
12841 | 388 |
(index == %{ __MKSMALLINT(__SLOT_CONTEXT_SENDER) %} ) ifTrue:[^ nil]. "/ sender - not allowed to change |
389 |
(index == %{ __MKSMALLINT(__SLOT_CONTEXT_RETVAL) %} ) ifTrue:[^ nil]. "/ retvalTemp - not allowed to change |
|
390 |
(index == %{ __MKSMALLINT(__SLOT_CONTEXT_HANDLE) %} ) ifTrue:[^ nil]. "/ handle to machine stack - not allowed to change |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
391 |
super instVarAt:index put:value. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
392 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
393 |
"/ need some aid for optimized code - |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
394 |
"/ some machines have the arguments kept in register vars ... |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
395 |
"/ the unfix updates the machine-stack version of the receiver. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
396 |
%{ |
4570 | 397 |
__UNFIXCONTEXT(self, 0); |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
398 |
%}. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
399 |
^ value |
1 | 400 |
! |
401 |
||
4328
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
402 |
javaLineNumber |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
403 |
|nr pc| |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
404 |
|
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
405 |
lineNr notNil ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
406 |
pc := lineNr bitAnd:16rFFFF. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
407 |
]. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
408 |
|
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
409 |
"/ 'ask line for pc:' print. pc printCR. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
410 |
pc isNil ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
411 |
nr := self lineNumberFromMethod. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
412 |
nr notNil ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
413 |
^ nr |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
414 |
]. |
12841 | 415 |
" '-> 0 [a]' printCR. " |
4328
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
416 |
^0 |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
417 |
]. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
418 |
|
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
419 |
nr := self method lineNumberForPC:pc. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
420 |
nr isNil ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
421 |
nr := self lineNumberFromMethod. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
422 |
nr notNil ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
423 |
^ nr |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
424 |
]. |
12841 | 425 |
" '-> 0 [b]' printCR. " |
4328
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
426 |
^ 0 |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
427 |
]. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
428 |
"/ '-> ' print. nr printCR. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
429 |
^ nr. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
430 |
|
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
431 |
! |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
432 |
|
623 | 433 |
lineNumber |
434 |
"this returns the lineNumber within the methods source, where the context was |
|
435 |
interrupted or called another method. (currently, sometimes this information |
|
436 |
is not available - in this case 0 is returned)" |
|
1 | 437 |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
438 |
|l| |
3923 | 439 |
|
4328
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
440 |
receiver isJavaObject ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
441 |
"/ chances are good that I am a javContext ... |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
442 |
self method isJavaMethod ifTrue:[ |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
443 |
^ self javaLineNumber |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
444 |
] |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
445 |
]. |
9cc10bae2f98
care for contexts which really ought to be java contexts
Claus Gittinger <cg@exept.de>
parents:
3923
diff
changeset
|
446 |
|
3923 | 447 |
lineNr notNil ifTrue:[ |
448 |
l := lineNr bitAnd:16rFFFF. |
|
449 |
]. |
|
450 |
||
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
451 |
"/ self isJavaContext ifTrue:[ |nr m| |
3923 | 452 |
"/ m := self method. |
453 |
"/ l isNil ifTrue:[ |
|
454 |
"/ m notNil ifTrue:[ |
|
455 |
"/ nr := m lineNumber |
|
456 |
"/ ]. |
|
457 |
"/ nr notNil ifTrue:[ |
|
458 |
"/ ^ nr |
|
459 |
"/ ]. |
|
460 |
"/ ^0 |
|
461 |
"/ ]. |
|
462 |
"/ nr := self method lineNumberForPC:l. |
|
463 |
"/ nr isNil ifTrue:[ |
|
464 |
"/ m notNil ifTrue:[ |
|
465 |
"/ nr := m lineNumber |
|
466 |
"/ ]. |
|
467 |
"/ nr notNil ifTrue:[ |
|
468 |
"/ ^ nr |
|
469 |
"/ ]. |
|
470 |
"/ ^ 0 |
|
471 |
"/ ]. |
|
472 |
"/ ^ nr. |
|
473 |
"/ ]. |
|
474 |
||
475 |
^ l |
|
476 |
||
477 |
"Modified: / 10.11.1998 / 13:19:48 / cg" |
|
1 | 478 |
! |
479 |
||
4450 | 480 |
lineNumberFromMethod |
481 |
^ 1 |
|
482 |
! |
|
483 |
||
8488 | 484 |
message |
485 |
^ Message selector:selector arguments:self args |
|
486 |
||
487 |
" |
|
9355 | 488 |
thisContext methodHome message |
489 |
thisContext message |
|
8488 | 490 |
" |
491 |
! |
|
492 |
||
1 | 493 |
method |
54 | 494 |
"return the method for which the receiver was created. |
13020 | 495 |
Change with ST/X vsn 6: |
496 |
In older versions, the method was not stored in the context, but a lookup |
|
497 |
was simulated using selector and class. |
|
498 |
(which occasionally returned the wrong method - especially in the debugger, |
|
499 |
when the debugged method was changed). |
|
500 |
This has been changed - especially to support Jan's meta-object protocol. |
|
501 |
It is now stored in the context" |
|
1 | 502 |
|
3508 | 503 |
|c sender sendersSelector m| |
14225 | 504 |
|
505 |
(method notNil and:[method isMethod]) ifTrue:[ |
|
506 |
^ method |
|
507 |
]. |
|
508 |
||
509 |
"mhmh - maybe I am a context for an unbound method (as generated by doIt); |
|
510 |
look in the sender's context. Consider this a kludge. |
|
511 |
Future versions of ST/X's message lookup may store the method in |
|
512 |
the context. |
|
513 |
" |
|
514 |
sender := self sender. |
|
515 |
sender notNil ifTrue:[ |
|
516 |
sendersSelector := sender selector. |
|
517 |
sendersSelector notNil ifTrue:[ |
|
518 |
(sendersSelector startsWith:'valueWithReceiver:') ifTrue:[ |
|
519 |
m := sender receiver. |
|
520 |
m isMethod ifTrue:[ |
|
521 |
method := m. |
|
522 |
^ m |
|
523 |
] |
|
13426 | 524 |
] |
12853
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
525 |
] |
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
526 |
]. |
12841 | 527 |
|
325 | 528 |
c := self searchClass. |
529 |
" |
|
530 |
the below cannot happen in normal circumstances |
|
531 |
(added to avoid recursive errors in case of a broken sender chain) |
|
532 |
" |
|
533 |
c isBehavior ifFalse:[ |
|
12841 | 534 |
'Context [error]: non class in searchClass' errorPrintCR. |
535 |
' selector: ' errorPrint. selector errorPrint. |
|
536 |
' receiver: ' errorPrint. receiver errorPrintCR. |
|
537 |
^ nil |
|
325 | 538 |
]. |
539 |
||
328 | 540 |
c := c whichClassIncludesSelector:selector. |
1 | 541 |
c notNil ifTrue:[ |
12853
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
542 |
method := c compiledMethodAt:selector. |
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
543 |
^ method |
1 | 544 |
]. |
216 | 545 |
|
1 | 546 |
^ nil |
2135
6bd144c1c358
newStyle info & error messages
Claus Gittinger <cg@exept.de>
parents:
1853
diff
changeset
|
547 |
|
13426 | 548 |
"Modified: / 28-06-2011 / 20:23:05 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
14225 | 549 |
"Modified: / 20-07-2012 / 14:46:37 / cg" |
1 | 550 |
! |
551 |
||
212 | 552 |
methodClass |
553 |
"return the class in which the method for which the receiver was created is." |
|
554 |
||
1456 | 555 |
|cls m| |
556 |
||
12853
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
557 |
method notNil ifTrue:[ |
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
558 |
method isMethod ifTrue:[ |
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
559 |
^ method mclass |
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
560 |
] |
3d15dcbe0057
added method-in-context slot.
Claus Gittinger <cg@exept.de>
parents:
12841
diff
changeset
|
561 |
]. |
12841 | 562 |
|
1456 | 563 |
cls := self searchClass. |
3923 | 564 |
(cls isMeta |
565 |
and:[cls soleInstance isJavaClass]) ifTrue:[ |
|
566 |
cls := cls soleInstance |
|
567 |
]. |
|
1456 | 568 |
|
3923 | 569 |
[cls notNil] whileTrue:[ |
570 |
cls := cls whichClassIncludesSelector:selector. |
|
571 |
cls isNil ifTrue:[^ nil]. |
|
572 |
||
573 |
m := cls compiledMethodAt:selector. |
|
574 |
m notNil ifTrue:[ |
|
575 |
m isIgnored ifFalse:[^ cls]. |
|
576 |
]. |
|
577 |
cls := cls superclass |
|
1456 | 578 |
]. |
579 |
^ cls |
|
580 |
||
3923 | 581 |
"Modified: / 5.11.1998 / 19:07:43 / cg" |
212 | 582 |
! |
583 |
||
623 | 584 |
methodHome |
585 |
"return the method-home - for method contexts this is the receiver" |
|
586 |
||
587 |
^ self |
|
588 |
! |
|
589 |
||
15091 | 590 |
methodSelector |
591 |
"return the method's (or home method's) selector" |
|
592 |
||
593 |
^ self methodHome selector |
|
594 |
! |
|
595 |
||
623 | 596 |
ntemp |
597 |
"return the number of temporary variables of the Block/Method. |
|
1810 | 598 |
(for debugging only). |
599 |
I dont like the name of this method; its here for compatibility." |
|
623 | 600 |
|
1810 | 601 |
^ self numTemps |
602 |
||
603 |
"Modified: 23.10.1996 / 16:19:06 / cg" |
|
623 | 604 |
! |
605 |
||
606 |
numArgs |
|
607 |
"return the number of arguments to the Block/Method" |
|
608 |
||
609 |
%{ /* NOCONTEXT */ |
|
610 |
||
8913 | 611 |
RETURN ( __mkSmallInteger( (__intVal(__INST(flags)) >> __NARG_SHIFT) & __NARG_MASK) ); |
623 | 612 |
%} |
613 |
! |
|
614 |
||
1810 | 615 |
numTemps |
616 |
"return the number of temporary variables of the Block/Method. |
|
617 |
(for debugging only)" |
|
618 |
||
619 |
^ self size - self numArgs - self numVars |
|
620 |
||
621 |
"Created: 23.10.1996 / 16:19:10 / cg" |
|
622 |
"Modified: 23.10.1996 / 16:19:48 / cg" |
|
623 |
! |
|
624 |
||
625 |
numVars |
|
623 | 626 |
"return the number of local variables of the Block/Method" |
536
dcffd1753902
be safe, when accessing a contexts sender.
Claus Gittinger <cg@exept.de>
parents:
528
diff
changeset
|
627 |
|
623 | 628 |
%{ /* NOCONTEXT */ |
629 |
||
8913 | 630 |
RETURN ( __mkSmallInteger( (__intVal(__INST(flags)) >> __NVAR_SHIFT) & __NVAR_MASK) ); |
623 | 631 |
%} |
632 |
! |
|
633 |
||
1810 | 634 |
nvars |
635 |
"return the number of local variables of the Block/Method. |
|
636 |
I dont like the name of this method; its here for compatibility." |
|
637 |
||
638 |
^ self numVars |
|
639 |
||
640 |
"Modified: 23.10.1996 / 16:18:44 / cg" |
|
641 |
! |
|
642 |
||
13426 | 643 |
programmingLanguage |
644 |
||
13543
63c783128bae
changed: #programmingLanguage
Claus Gittinger <cg@exept.de>
parents:
13519
diff
changeset
|
645 |
^method notNil |
63c783128bae
changed: #programmingLanguage
Claus Gittinger <cg@exept.de>
parents:
13519
diff
changeset
|
646 |
ifTrue:[method programmingLanguage] |
63c783128bae
changed: #programmingLanguage
Claus Gittinger <cg@exept.de>
parents:
13519
diff
changeset
|
647 |
ifFalse:[SmalltalkLanguage instance] |
13426 | 648 |
|
649 |
"Created: / 17-03-2011 / 10:17:14 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
|
13543
63c783128bae
changed: #programmingLanguage
Claus Gittinger <cg@exept.de>
parents:
13519
diff
changeset
|
650 |
"Modified (format): / 02-08-2011 / 09:23:39 / cg" |
13426 | 651 |
! |
652 |
||
623 | 653 |
receiver |
654 |
"return the receiver of the context" |
|
655 |
||
656 |
^ receiver |
|
657 |
! |
|
658 |
||
4543 | 659 |
receiver:aCompiledCode |
660 |
"set the receiver of the message" |
|
661 |
||
4560
618151751813
Need _UNFIXCONTEXT() when changing receiver.
Stefan Vogel <sv@exept.de>
parents:
4557
diff
changeset
|
662 |
receiver := aCompiledCode. |
4543 | 663 |
|
4560
618151751813
Need _UNFIXCONTEXT() when changing receiver.
Stefan Vogel <sv@exept.de>
parents:
4557
diff
changeset
|
664 |
"/ need some aid for optimized code - |
618151751813
Need _UNFIXCONTEXT() when changing receiver.
Stefan Vogel <sv@exept.de>
parents:
4557
diff
changeset
|
665 |
"/ some machines have the arguments kept in register vars ... |
618151751813
Need _UNFIXCONTEXT() when changing receiver.
Stefan Vogel <sv@exept.de>
parents:
4557
diff
changeset
|
666 |
"/ the unfix updates the machine-stack version of the receiver. |
618151751813
Need _UNFIXCONTEXT() when changing receiver.
Stefan Vogel <sv@exept.de>
parents:
4557
diff
changeset
|
667 |
%{ |
4570 | 668 |
__UNFIXCONTEXT(self, 0); |
4560
618151751813
Need _UNFIXCONTEXT() when changing receiver.
Stefan Vogel <sv@exept.de>
parents:
4557
diff
changeset
|
669 |
%}. |
4543 | 670 |
|
671 |
! |
|
672 |
||
623 | 673 |
searchClass |
674 |
"this is the class where the method-lookup started; |
|
675 |
for normal sends, it is nil (or sometimes the receivers class). |
|
676 |
For supersends, its the superclass of the one, in which the |
|
677 |
caller was defined." |
|
678 |
||
679 |
searchClass notNil ifTrue:[^ searchClass]. |
|
680 |
^ receiver class |
|
681 |
! |
|
682 |
||
683 |
selector |
|
684 |
"return the selector of the method for which the context was created" |
|
685 |
||
686 |
^ selector |
|
536
dcffd1753902
be safe, when accessing a contexts sender.
Claus Gittinger <cg@exept.de>
parents:
528
diff
changeset
|
687 |
! |
dcffd1753902
be safe, when accessing a contexts sender.
Claus Gittinger <cg@exept.de>
parents:
528
diff
changeset
|
688 |
|
1 | 689 |
sender |
690 |
"return the sender of the context" |
|
691 |
||
536
dcffd1753902
be safe, when accessing a contexts sender.
Claus Gittinger <cg@exept.de>
parents:
528
diff
changeset
|
692 |
%{ /* NOCONTEXT */ |
1668
41db5950f9ea
oops - con local variables are now renamed (last change in stc)
Claus Gittinger <cg@exept.de>
parents:
1492
diff
changeset
|
693 |
OBJ theContext; |
536
dcffd1753902
be safe, when accessing a contexts sender.
Claus Gittinger <cg@exept.de>
parents:
528
diff
changeset
|
694 |
|
3508 | 695 |
theContext = __INST(sender_); |
949 | 696 |
/* |
697 |
* this special nil test is for the very first context (startup-context); |
|
698 |
* actually, its cosmetics, to avoid a visible nil>>nil context in the debugger. |
|
699 |
*/ |
|
2205 | 700 |
if (__isNonNilObject(theContext)) { |
949 | 701 |
|
12841 | 702 |
if (__isLazy(theContext)) { |
703 |
/* |
|
704 |
* this cannot happen |
|
705 |
*/ |
|
706 |
__PATCHUPCONTEXT(theContext); |
|
707 |
} |
|
708 |
if (! __isNonLIFO(theContext)) { |
|
709 |
/* |
|
710 |
* to be prepared for the worst situation |
|
15232 | 711 |
* (the sender is not stored, so the trap won't catch it) |
12841 | 712 |
* make the writeBarrier trigger manually. |
713 |
* We'll see, if this is really required. |
|
714 |
*/ |
|
715 |
theContext->o_space |= CATCHMARK; |
|
15232 | 716 |
__markNonLIFO(theContext); |
12841 | 717 |
} |
536
dcffd1753902
be safe, when accessing a contexts sender.
Claus Gittinger <cg@exept.de>
parents:
528
diff
changeset
|
718 |
} |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
719 |
RETURN (theContext); |
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
720 |
%} |
1 | 721 |
! |
722 |
||
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
723 |
senderIsNil |
15319 | 724 |
"return true, if I have no sender. |
725 |
This little ugly piece of code is needed (instead of the obvious |
|
726 |
'sender isNil') because sender is a protected field, which cannot be |
|
727 |
directly accessed by smalltalk code. The reason is that the sender field |
|
728 |
is lazily filled in by the VM, in the sender-accessor, and is usually |
|
729 |
invalid until needed." |
|
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
730 |
|
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
731 |
%{ /* NOCONTEXT */ |
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
732 |
if ( __INST(sender_) == nil ) { |
5422 | 733 |
RETURN (true); |
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
734 |
} |
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
735 |
RETURN (false); |
5422 | 736 |
%}. |
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
737 |
! |
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
738 |
|
623 | 739 |
setLineNumber:aNumber |
740 |
"private entry for uncompiledCodeObject ..." |
|
1 | 741 |
|
623 | 742 |
lineNr := aNumber |
340 | 743 |
! |
744 |
||
5749 | 745 |
setNumArgs:nA numVars:nV |
746 |
"set the number of arguments and variables" |
|
747 |
||
748 |
%{ /* NOCONTEXT */ |
|
8910 | 749 |
INT flg; |
5749 | 750 |
|
751 |
flg = __intVal(__INST(flags)); |
|
752 |
flg = flg & ~(__NARG_MASK << __NARG_SHIFT); |
|
753 |
flg = flg & ~(__NVAR_MASK << __NVAR_SHIFT); |
|
754 |
flg = flg | __intVal(nA) << __NARG_SHIFT; |
|
755 |
flg = flg | __intVal(nV) << __NVAR_SHIFT; |
|
8913 | 756 |
__INST(flags) = __mkSmallInteger(flg); |
5749 | 757 |
%} |
758 |
! |
|
759 |
||
12841 | 760 |
tempAt:index |
8578 | 761 |
"return the n'th stack-temporary variable" |
762 |
||
763 |
^ self at:index |
|
764 |
! |
|
765 |
||
12841 | 766 |
temporaries |
202 | 767 |
"return an array filled with the temporaries of this context" |
768 |
||
308 | 769 |
|nonTemps mySize| |
202 | 770 |
|
1810 | 771 |
nonTemps := self numArgs + self numVars. |
772 |
mySize := self numTemps. |
|
3130 | 773 |
mySize == 0 ifTrue:[ |
12841 | 774 |
"/ little optimization here - avaoid creating empty containers |
775 |
^ #() |
|
3130 | 776 |
]. |
308 | 777 |
^ (Array new:mySize) replaceFrom:1 to:mySize with:self startingAt:nonTemps+1 |
1810 | 778 |
|
779 |
"Modified: 23.10.1996 / 16:20:00 / cg" |
|
202 | 780 |
! |
781 |
||
10 | 782 |
varAt:n |
783 |
"return the n'th local variable" |
|
784 |
||
154 | 785 |
^ self at:(n + self numArgs) |
10 | 786 |
! |
787 |
||
788 |
varAt:n put:value |
|
789 |
"set the n'th local variable - useful when the receiver should be restarted |
|
54 | 790 |
or continued" |
10 | 791 |
|
154 | 792 |
self at:(n + self numArgs) put:value |
10 | 793 |
! |
794 |
||
12841 | 795 |
vars |
623 | 796 |
"return an array filled with the local variables of this context" |
375 | 797 |
|
623 | 798 |
|nonVars mySize| |
360 | 799 |
|
623 | 800 |
nonVars := self numArgs. |
1810 | 801 |
mySize := self numVars. |
3130 | 802 |
mySize == 0 ifTrue:[ |
12841 | 803 |
"/ little optimization here - avaoid creating empty containers |
804 |
^ #() |
|
3130 | 805 |
]. |
623 | 806 |
^ (Array new:mySize) replaceFrom:1 to:mySize with:self startingAt:nonVars+1 |
1810 | 807 |
|
808 |
"Modified: 23.10.1996 / 16:20:06 / cg" |
|
1 | 809 |
! ! |
810 |
||
623 | 811 |
!Context methodsFor:'copying'! |
415 | 812 |
|
10943 | 813 |
deepCopyUsing:aDictionary postCopySelector:postCopySelector |
10136 | 814 |
|copyOfMe| |
3350
40dc4807a6d4
must catch #deppCopyUsing: instead of #deepCopy.
Claus Gittinger <cg@exept.de>
parents:
3324
diff
changeset
|
815 |
|
10136 | 816 |
copyOfMe := self shallowCopy. |
817 |
copyOfMe setSender:nil. |
|
13516
9bbdb9d05a51
changed: #deepCopyUsing:postCopySelector:
Claus Gittinger <cg@exept.de>
parents:
13473
diff
changeset
|
818 |
copyOfMe perform:postCopySelector withOptionalArgument:self and:aDictionary. |
10136 | 819 |
^ copyOfMe |
820 |
||
821 |
"Created: / 31-03-1998 / 15:51:14 / cg" |
|
13516
9bbdb9d05a51
changed: #deepCopyUsing:postCopySelector:
Claus Gittinger <cg@exept.de>
parents:
13473
diff
changeset
|
822 |
"Modified: / 21-07-2011 / 13:30:21 / cg" |
1 | 823 |
! ! |
824 |
||
15010 | 825 |
!Context methodsFor:'enumerating'! |
826 |
||
827 |
withAllSendersDo:aBlock |
|
828 |
"evaluate aBlock for me and all contexts of my sender chain" |
|
829 |
||
830 |
|con| |
|
831 |
||
832 |
con := self. |
|
833 |
[ con notNil ] whileTrue:[ |
|
834 |
aBlock value:con. |
|
835 |
con := con sender. |
|
836 |
] |
|
837 |
! ! |
|
838 |
||
77 | 839 |
!Context methodsFor:'error handling'! |
840 |
||
841 |
invalidReturn:returnValue |
|
842 |
"this message is sent by the VM, when a methods context |
|
843 |
which has already returned is about to return again. |
|
844 |
(i.e. about to execute a return from an already returned |
|
105 | 845 |
method in a block). |
141 | 846 |
We raise a signal here, to allow catching of that situation." |
77 | 847 |
|
406 | 848 |
" |
849 |
in previous versions of ST/X and ST-80, this was no error; |
|
850 |
(instead, a normal blockreturn was performed to the value-sender). |
|
851 |
From a note in comp.lang.smalltalk, I conclude that new ST-80 versions |
|
852 |
now raise an error if this happens. |
|
853 |
Comment out the raise below to get that (old) behavior |
|
854 |
BETTER REWRITE YOUR APPLICATION |
|
12841 | 855 |
" |
3258
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
856 |
"/ old behavior: |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
857 |
"/ ^ returnValue |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
858 |
|
282 | 859 |
"/ new behavior: |
860 |
||
3258
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
861 |
"/ if this context is one of another process, |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
862 |
"/ use another error message. |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
863 |
|
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
864 |
(home notNil and:[home sender notNil]) ifTrue:[ |
12841 | 865 |
^ CannotReturnError |
3258
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
866 |
raiseRequestWith:returnValue |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
867 |
errorString:'cannot return from another process''s context'. |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
868 |
]. |
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
869 |
|
12841 | 870 |
^ CannotReturnError |
3258
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
871 |
raiseRequestWith:returnValue. |
282 | 872 |
|
3258
2d96bba62ff1
use another error message if attempting to
Claus Gittinger <cg@exept.de>
parents:
3182
diff
changeset
|
873 |
"Modified: / 2.2.1998 / 15:19:52 / cg" |
406 | 874 |
! |
875 |
||
876 |
invalidReturnOrRestart:returnValue |
|
15268 | 877 |
"this message is sent by the VM, when a method's or block's context |
878 |
which was compiled non-returnable is about to return again, |
|
879 |
or a non-restartable context is tried to be restarted. |
|
880 |
In ST/X, not all contexts are restartable/returnable. |
|
406 | 881 |
We raise a signal here, to allow catching of that situation." |
882 |
||
6002 | 883 |
^ CannotReturnError |
884 |
raiseRequestWith:returnValue |
|
885 |
errorString:'method was compiled non-resumable' |
|
360 | 886 |
! |
887 |
||
888 |
invalidReturnOrRestartError:how with:value |
|
889 |
"common error reporter for restart/return errors" |
|
12841 | 890 |
|
360 | 891 |
self canReturn ifTrue:[ |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
892 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
893 |
tried to return from/restart a context which is already dead |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
894 |
(i.e. the method/block has already executed a return) |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
895 |
" |
12841 | 896 |
^ CannotReturnError |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
897 |
raiseRequestWith:value |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
898 |
errorString:(how , ' context not on calling chain') |
360 | 899 |
]. |
900 |
" |
|
901 |
tried to return from/restart a context of a method which was compiled |
|
902 |
unrestartable or of a block (which is never restartable) |
|
903 |
" |
|
12841 | 904 |
^ CannotReturnError |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
905 |
raiseRequestWith:value |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
906 |
errorString:(how , ' context cannot be restarted/returned from') |
77 | 907 |
! ! |
908 |
||
6404 | 909 |
!Context methodsFor:'fixups'! |
910 |
||
911 |
fixAllLineNumbers |
|
912 |
%{ |
|
913 |
__PATCHUPCONTEXTS(__thisContext); |
|
6424 | 914 |
__CONTEXTLINENOS(self); |
6404 | 915 |
%} |
916 |
! ! |
|
917 |
||
623 | 918 |
!Context methodsFor:'minidebugger printing'! |
919 |
||
920 |
fullPrint |
|
12841 | 921 |
"print the receiver, selector and args of the context |
623 | 922 |
- used only for MiniDebuggers walkback print" |
923 |
||
924 |
self receiverPrintString print. ' ' print. selector print. |
|
925 |
self size ~~ 0 ifTrue: [ |
|
12841 | 926 |
' ' print. self argsDisplayString print |
623 | 927 |
]. |
1426 | 928 |
' [' print. self lineNumber print. ']' printCR |
623 | 929 |
|
930 |
" |
|
931 |
thisContext fullPrint |
|
932 |
" |
|
1426 | 933 |
|
934 |
"Modified: 20.5.1996 / 10:27:14 / cg" |
|
623 | 935 |
! |
936 |
||
937 |
fullPrintAll |
|
938 |
"print a full walkback starting at the receiver |
|
939 |
- used only for MiniDebuggers walkback print" |
|
940 |
||
15010 | 941 |
self withAllSendersDo:[:con | con fullPrint]. |
623 | 942 |
|
943 |
" |
|
944 |
thisContext fullPrintAll |
|
945 |
" |
|
2173 | 946 |
! |
947 |
||
4674 | 948 |
fullPrintAllLevels:nOrNil |
949 |
"print a full walkback starting at the receiver, only print n levels |
|
950 |
- used only for MiniDebuggers walkback print" |
|
951 |
||
952 |
|context count| |
|
953 |
||
954 |
count := 0. |
|
955 |
context := self. |
|
956 |
[context notNil] whileTrue: [ |
|
957 |
context fullPrint. |
|
958 |
context := context sender. |
|
5911 | 959 |
nOrNil notNil ifTrue:[ |
4674 | 960 |
(count := count+1) > nOrNil ifTrue:[^self]. |
961 |
] |
|
962 |
] |
|
963 |
||
964 |
" |
|
6648 | 965 |
thisContext fullPrintAllLevels:5 |
4674 | 966 |
" |
967 |
||
968 |
"Created: / 3.9.1999 / 14:02:38 / ps" |
|
11540 | 969 |
! |
970 |
||
11542 | 971 |
printAll |
972 |
"print a full walkback starting at the receiver, only print n levels |
|
973 |
- used only for MiniDebuggers walkback print" |
|
974 |
||
975 |
self printAllLevels:nil |
|
976 |
||
977 |
" |
|
978 |
thisContext printAll |
|
979 |
" |
|
980 |
! |
|
981 |
||
11540 | 982 |
printAllLevels:nOrNil |
983 |
"print a full walkback starting at the receiver, only print n levels |
|
984 |
- used only for MiniDebuggers walkback print" |
|
985 |
||
986 |
|context count| |
|
987 |
||
988 |
count := 0. |
|
989 |
context := self. |
|
11544 | 990 |
'--------------------------' printCR. |
11540 | 991 |
[context notNil] whileTrue: [ |
992 |
context printCR. |
|
993 |
context := context sender. |
|
994 |
nOrNil notNil ifTrue:[ |
|
11543 | 995 |
(count := count+1) > nOrNil ifTrue:[ |
996 |
'--------------------------' printCR. |
|
12841 | 997 |
^ self |
11543 | 998 |
]. |
11540 | 999 |
] |
11545 | 1000 |
]. |
1001 |
'--------------------------' printCR. |
|
11540 | 1002 |
|
1003 |
" |
|
1004 |
thisContext printAllLevels:5 |
|
1005 |
" |
|
623 | 1006 |
! ! |
1007 |
||
1 | 1008 |
!Context methodsFor:'non local control flow'! |
1009 |
||
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1010 |
evaluateUnwindActionsUpTo:aContext |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1011 |
"walk up the calling chain, looking for unwind-cleanup actions to |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1012 |
be performed. This depends upon those contexts being specially |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1013 |
marked using #markForUnwind. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1014 |
Returns the argument (i.e. non-nil), if all went well, |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1015 |
nil if aContext is not on the caller chain (definitely an error)" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1016 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1017 |
|con unwindBlock| |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1018 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1019 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1020 |
start with this context, moving up, looking for unwind actions |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1021 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1022 |
con := self findNextUnwindContextOr:aContext. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1023 |
[con notNil and:[con ~~ aContext]] whileTrue:[ |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1024 |
unwindBlock := con receiver unwindHandlerInContext:con. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1025 |
con unmarkForUnwind. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1026 |
unwindBlock value. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1027 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1028 |
con := con findNextUnwindContextOr:aContext. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1029 |
]. |
11340
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1030 |
"/ mhmh - the just unwound context could itself be markedForUnwind |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1031 |
(con notNil and:[con isMarkedForUnwind]) ifTrue:[ |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1032 |
unwindBlock := con receiver unwindHandlerInContext:con. |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1033 |
con unmarkForUnwind. |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1034 |
unwindBlock value. |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1035 |
]. |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1036 |
^ con |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1037 |
! |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1038 |
|
15688 | 1039 |
resend |
1040 |
"EXPERIMENTAL: resend the context's message (to the same receiver). |
|
1041 |
if the method's implementation has been changed in the meanwhile (for example, in the debugger), |
|
1042 |
the new code is executed. Otherwise the same code is reexecuted from the start." |
|
1043 |
||
1044 |
self returnDoing:[ receiver perform:selector withArguments:(self args) ]. |
|
1045 |
||
1046 |
" |
|
1047 |
when we arrive here, something went wrong. |
|
1048 |
debugging ... |
|
1049 |
" |
|
1050 |
^ self invalidReturnOrRestartError:#'resend' with:nil |
|
1051 |
! |
|
1052 |
||
1 | 1053 |
restart |
1054 |
"restart the receiver - i.e. the method is evaluated again. |
|
402 | 1055 |
if the context to restart already died, trigger an error. |
141 | 1056 |
This is a low level helper for unwindAndRestart. |
1057 |
||
12841 | 1058 |
NOTICE: |
1059 |
NO unwind actions are performed - this is usually not |
|
1060 |
what you want (see Context>>unwindAndRestart). |
|
1061 |
||
1062 |
LIMITATION: |
|
1063 |
currently a context can only be restarted by |
|
1064 |
the owning process - not from outside. |
|
1065 |
Also, the compiler has an option (+optcontext) to create |
|
1066 |
non-restartable contexts (which are faster). |
|
1067 |
If such a context is restarted, a runtime error is raised." |
|
1 | 1068 |
|
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1069 |
%{ /* NOCONTEXT */ |
15650 | 1070 |
if (__INST(sender_) == nil) { |
1071 |
RETURN(nil); |
|
1072 |
} else { |
|
12841 | 1073 |
__RESUMECONTEXT__(self, RESTART_VALUE, 0); |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1074 |
} |
360 | 1075 |
%}. |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1076 |
|
69 | 1077 |
" |
360 | 1078 |
when we arrive here, something went wrong. |
69 | 1079 |
debugging ... |
1080 |
" |
|
360 | 1081 |
^ self invalidReturnOrRestartError:#restart with:nil |
1 | 1082 |
! |
1083 |
||
623 | 1084 |
resume |
1085 |
"resume execution in this context. I.e. as if the method called |
|
1086 |
last by the receiver did a ^ nil. |
|
1087 |
If the context has already returned, report an error. |
|
1088 |
||
1089 |
NOTICE: |
|
12841 | 1090 |
NO unwind actions are performed (see Context>>unwind). |
1091 |
||
1092 |
LIMITATION: |
|
1093 |
currently a context can only be resumed by |
|
1094 |
the owning process - not from outside. |
|
1095 |
Also, the compiler has an option (+optcontext) to create |
|
1096 |
non-resumable contexts (which are faster). |
|
1097 |
If such a context is restarted, a runtime error is raised." |
|
623 | 1098 |
|
1099 |
^ self resume:nil |
|
1100 |
! |
|
1101 |
||
1102 |
resume:value |
|
1103 |
"resume the receiver - as if it got 'value' from whatever |
|
1104 |
it called. This continues execution in the receivers method |
|
1105 |
after the point where it did its last send. |
|
12841 | 1106 |
If the context has already returned - report an error. |
623 | 1107 |
|
1108 |
NOTICE: |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1109 |
NO unwind actions are performed (see Context>>unwind:). |
623 | 1110 |
|
12841 | 1111 |
LIMITATION: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1112 |
currently a context can only be resumed by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1113 |
the owning process - not from outside. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1114 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1115 |
non-resumable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1116 |
If such a context is restarted, a runtime error is raised." |
623 | 1117 |
|
1668
41db5950f9ea
oops - con local variables are now renamed (last change in stc)
Claus Gittinger <cg@exept.de>
parents:
1492
diff
changeset
|
1118 |
|theContext| |
623 | 1119 |
|
1120 |
" |
|
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
1121 |
starting with this context, find the one below |
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
1122 |
(i.e. the one that I have called) and return from it. |
623 | 1123 |
" |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1124 |
|
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
1125 |
%{ |
4557 | 1126 |
OBJ sndr; |
1127 |
||
2510
393a51424d60
avoid marking context as nonLifo (in unwind:)
Claus Gittinger <cg@exept.de>
parents:
2368
diff
changeset
|
1128 |
theContext = __thisContext; |
4557 | 1129 |
while (theContext != nil) { |
1130 |
sndr = __ContextInstPtr(theContext)->c_sender; |
|
1131 |
if (sndr == self) break; |
|
1132 |
theContext = sndr; |
|
623 | 1133 |
} |
3508 | 1134 |
if (theContext != nil) { |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1135 |
if (__isLazy(theContext)) { |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1136 |
__PATCHUPCONTEXT(theContext); |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1137 |
} |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1138 |
} |
623 | 1139 |
%}. |
1140 |
||
1668
41db5950f9ea
oops - con local variables are now renamed (last change in stc)
Claus Gittinger <cg@exept.de>
parents:
1492
diff
changeset
|
1141 |
theContext isNil ifTrue:[ |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1142 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1143 |
tried to resume in context which is already dead |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1144 |
(i.e. the method/block has already executed a return) |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1145 |
" |
4557 | 1146 |
^ thisContext invalidReturnOrRestartError:#'resume:' with:value |
623 | 1147 |
]. |
1668
41db5950f9ea
oops - con local variables are now renamed (last change in stc)
Claus Gittinger <cg@exept.de>
parents:
1492
diff
changeset
|
1148 |
^ theContext return:value |
623 | 1149 |
! |
1150 |
||
4557 | 1151 |
resumeIgnoringErrors:value |
1152 |
"resume the receiver - as if it got 'value' from whatever |
|
1153 |
it called. This continues execution in the receivers method |
|
1154 |
after the point where it did its last send. |
|
12841 | 1155 |
If the context has already returned - simply return. |
4557 | 1156 |
|
1157 |
NOTICE: |
|
1158 |
NO unwind actions are performed (see Context>>unwind:). |
|
1159 |
||
12841 | 1160 |
LIMITATION: |
4557 | 1161 |
currently a context can only be resumed by |
1162 |
the owning process - not from outside. |
|
1163 |
Also, the compiler has an option (+optcontext) to create |
|
1164 |
non-resumable contexts (which are faster). |
|
1165 |
If such a context is restarted, a runtime error is raised." |
|
1166 |
||
1167 |
" |
|
1168 |
starting with this context, find the one below |
|
1169 |
(i.e. the one that I have called) and return from it. |
|
1170 |
" |
|
1171 |
||
1172 |
%{ |
|
1173 |
OBJ theContext, sndr; |
|
1174 |
||
1175 |
theContext = __thisContext; |
|
1176 |
while (theContext != nil) { |
|
1177 |
sndr = __ContextInstPtr(theContext)->c_sender; |
|
1178 |
if (sndr == self) break; |
|
1179 |
theContext = sndr; |
|
1180 |
} |
|
1181 |
if (theContext != nil) { |
|
1182 |
if (__ContextInstPtr(theContext)->c_sender) { |
|
4635 | 1183 |
if (!((INT)(__ContextInstPtr(theContext)->c_flags) & __MASKSMALLINT(__CANNOT_RETURN))) { |
1184 |
__RESUMECONTEXT__(theContext, value, 0); |
|
1185 |
} |
|
4557 | 1186 |
} |
1187 |
} |
|
1188 |
%}. |
|
1189 |
||
1190 |
"/ no error reporting |
|
1191 |
! |
|
1192 |
||
1193 |
resumeOnErrorProceed:value |
|
1194 |
"resume the receiver - as if it got 'value' from whatever |
|
1195 |
it called. This continues execution in the receivers method |
|
1196 |
after the point where it did its last send. |
|
12841 | 1197 |
If the context has already returned - simply return. |
4557 | 1198 |
|
1199 |
NOTICE: |
|
1200 |
NO unwind actions are performed (see Context>>unwind:). |
|
1201 |
||
12841 | 1202 |
LIMITATION: |
4557 | 1203 |
currently a context can only be resumed by |
1204 |
the owning process - not from outside. |
|
1205 |
Also, the compiler has an option (+optcontext) to create |
|
1206 |
non-resumable contexts (which are faster). |
|
1207 |
If such a context is restarted, a runtime error is raised." |
|
1208 |
||
1209 |
" |
|
1210 |
starting with this context, find the one below |
|
1211 |
(i.e. the one that I have called) and return from it. |
|
1212 |
" |
|
1213 |
||
1214 |
%{ |
|
1215 |
OBJ theContext, sndr; |
|
1216 |
||
1217 |
theContext = __thisContext; |
|
1218 |
while (theContext != nil) { |
|
1219 |
sndr = __ContextInstPtr(theContext)->c_sender; |
|
1220 |
if (sndr == self) break; |
|
1221 |
theContext = sndr; |
|
1222 |
} |
|
1223 |
if (theContext != nil) { |
|
1224 |
if (__ContextInstPtr(theContext)->c_sender) { |
|
1225 |
__RESUMECONTEXT__(theContext, value, 0); |
|
1226 |
} |
|
1227 |
} |
|
1228 |
%}. |
|
1229 |
||
1230 |
"/ no error reporting |
|
1231 |
! |
|
1232 |
||
69 | 1233 |
return |
141 | 1234 |
"return from this context with nil. I.e. as if it did a ^ nil. |
1235 |
NOTICE: |
|
12841 | 1236 |
NO unwind actions are performed - this is usually not |
1237 |
what you want (See Context>>unwind). |
|
1238 |
This is a low level method - a helper for unwind. |
|
1239 |
||
1240 |
LIMITATION: |
|
1241 |
currently a context can only be returned by |
|
1242 |
the owning process - not from outside. |
|
1243 |
Also, the compiler has an option (+optcontext) to create |
|
1244 |
non-returnable contexts (which are faster). |
|
1245 |
If such a context is restarted, a runtime error is raised." |
|
141 | 1246 |
|
1247 |
^ self return:nil |
|
1 | 1248 |
! |
1249 |
||
69 | 1250 |
return:value |
1251 |
"return from this context as if it did a '^ value'. |
|
141 | 1252 |
NOTICE: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1253 |
NO unwind actions are performed - this is usually not |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1254 |
what you want (See Context>>unwind:). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1255 |
This is a low level method - a helper for unwind. |
141 | 1256 |
|
12841 | 1257 |
LIMITATION: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1258 |
currently a context can only be returned by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1259 |
the owning process - not from outside. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1260 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1261 |
non-returnable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1262 |
If such a context is restarted, a runtime error is raised." |
1 | 1263 |
|
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1264 |
%{ /* NOCONTEXT */ |
15651 | 1265 |
if (__INST(sender_) == nil) { |
1266 |
RETURN(nil); |
|
1267 |
} else { |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1268 |
__RESUMECONTEXT__(self, value, 0); |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1269 |
} |
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1270 |
%}. |
1 | 1271 |
|
69 | 1272 |
" |
360 | 1273 |
when we arrive here, something went wrong. |
69 | 1274 |
debugging ... |
1275 |
" |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1276 |
^ self invalidReturnOrRestartError:#'return' with:value |
1 | 1277 |
! |
1278 |
||
328 | 1279 |
returnDoing:aBlock |
1280 |
"return from this context as if it did a '^ aBlock value'. |
|
1281 |
The block is evaluated as if called by the receiver context; |
|
1282 |
NOT the true executing context. |
|
1283 |
NOTICE: |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1284 |
NO unwind actions are performed - this is usually not |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1285 |
what you want (See Context>>unwindThenDo:). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1286 |
This is a low level method - a helper for unwind. |
328 | 1287 |
|
1288 |
LIMITATION: |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1289 |
currently a context can only be returned by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1290 |
the owning process - not from outside. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1291 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1292 |
non-returnable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1293 |
If such a context is restarted, a runtime error is raised." |
328 | 1294 |
|
12841 | 1295 |
%{ |
15651 | 1296 |
if (__INST(sender_) == nil) { |
1297 |
RETURN(nil); |
|
1298 |
} else { |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1299 |
__RESUMECONTEXT__(self, aBlock, 2); |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1300 |
} |
360 | 1301 |
%}. |
2368
f13bc879cb45
dont allow direct access to sender
Claus Gittinger <cg@exept.de>
parents:
2291
diff
changeset
|
1302 |
|
328 | 1303 |
" |
360 | 1304 |
when we arrive here, something went wrong. |
328 | 1305 |
debugging ... |
1306 |
" |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1307 |
^ self invalidReturnOrRestartError:#'returnDoing' with:aBlock |
328 | 1308 |
! |
1309 |
||
1 | 1310 |
unwind |
69 | 1311 |
"return nil from the receiver - i.e. simulate a '^ nil'. |
11337 | 1312 |
If the context has already returned, report an error. |
1 | 1313 |
Evaluate all unwind-blocks as specified in Block>>valueNowOrOnUnwind: |
69 | 1314 |
and Block>>valueOnUnwindDo: on the way. |
1 | 1315 |
|
12841 | 1316 |
LIMITATION: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1317 |
currently a context can only be unwound by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1318 |
the owning process - not from outside. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1319 |
i.e. it is not possible for one thread to unwind |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1320 |
another threads context - which does not make sense anyway. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1321 |
However, you can force another thread to do this in its own process |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1322 |
context, by giving it an interrupt action - this does make sense. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1323 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1324 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1325 |
non-returnable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1326 |
If such a context is restarted, a runtime error is raised." |
141 | 1327 |
|
1328 |
^ self unwind:nil |
|
1 | 1329 |
! |
1330 |
||
1331 |
unwind:value |
|
69 | 1332 |
"return value from the receiver - i.e. simulate a '^ value'. |
360 | 1333 |
If the context has already returned , report an error. |
1 | 1334 |
Evaluate all unwind-blocks as specified in Block>>valueNowOrOnUnwind: |
69 | 1335 |
and Block>>valueOnUnwindDo: on the way. |
141 | 1336 |
|
12841 | 1337 |
LIMITATION: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1338 |
currently a context can only be unwound by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1339 |
the owning process - not from outside. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1340 |
i.e. it is not possible for one thread to unwind |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1341 |
another threads context - which does not make sense anyway. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1342 |
However, you can force another thread to do this in its own process |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1343 |
context, by giving it an interrupt action - this does make sense. |
1 | 1344 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1345 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1346 |
non-returnable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1347 |
If such a context is restarted, a runtime error is raised." |
1 | 1348 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1349 |
|con| |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1350 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1351 |
self senderIsNil ifFalse:[ |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1352 |
con := thisContext evaluateUnwindActionsUpTo:self. |
141 | 1353 |
]. |
1 | 1354 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1355 |
"oops, if nil, I am not on the calling chain; |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1356 |
(bad bad, unwind action have already been performed. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1357 |
should we check for this situation first and NOT evaluate |
141 | 1358 |
the unwind actions in this case ?) |
1359 |
" |
|
69 | 1360 |
con isNil ifTrue:[ |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1361 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1362 |
tried to return to a context which is already dead |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1363 |
(i.e. the method/block has already executed a return) |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1364 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1365 |
^ self invalidReturnOrRestartError:#'unwind:' with:value |
69 | 1366 |
]. |
141 | 1367 |
" |
1368 |
now, that all unwind-actions are done, I can use the |
|
1369 |
low-level return ... |
|
1370 |
" |
|
1371 |
^ self return:value |
|
1372 |
! |
|
1373 |
||
1374 |
unwindAndRestart |
|
1375 |
"restart the receiver - i.e. the method is evaluated again. |
|
13804 | 1376 |
if the context to restart already did report an error. |
141 | 1377 |
Evaluate all unwind-blocks as specified in Block>>valueNowOrOnUnwind: |
1378 |
and Block>>valueOnUnwindDo: before restarting. |
|
1379 |
||
12841 | 1380 |
LIMITATION: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1381 |
a context can only be restarted by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1382 |
the owning process - not from outside. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1383 |
i.e. it is not possible for one thread to unwindAndRestart |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1384 |
another threads context - which does not make sense anyway. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1385 |
However, you can force another thread to do this in its own process |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1386 |
context, by giving it an interrupt action - this does make sense. |
141 | 1387 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1388 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1389 |
non-restartable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1390 |
If such a context is restarted, a runtime error is raised." |
552
694ecccaa1a0
only evaluate unwind blocks once
Claus Gittinger <cg@exept.de>
parents:
536
diff
changeset
|
1391 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1392 |
|con| |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1393 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1394 |
self senderIsNil ifFalse:[ |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1395 |
con := thisContext evaluateUnwindActionsUpTo:self. |
141 | 1396 |
]. |
1397 |
||
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1398 |
"oops, if nil, I am not on the calling chain; |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1399 |
(bad bad, unwind action have already been performed. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1400 |
should we check for this situation first and NOT evaluate |
141 | 1401 |
the unwind actions in this case ?) |
1402 |
" |
|
1403 |
con isNil ifTrue:[ |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1404 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1405 |
tried to return to a context which is already dead |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1406 |
(i.e. the method/block has already executed a return) |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1407 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1408 |
^ self invalidReturnOrRestartError:#'unwindAndRestart:' with:nil |
141 | 1409 |
]. |
1410 |
" |
|
1411 |
now, that all unwind-actions are done, I can use the |
|
1412 |
low-level restart ... |
|
1413 |
" |
|
1414 |
^ self restart |
|
328 | 1415 |
! |
1416 |
||
4485 | 1417 |
unwindAndResume:value |
1418 |
"resume execution in the the receiver - i.e. simulate a '^ value' |
|
1419 |
from whatever it called last. |
|
1420 |
If the context has already returned , report an error. |
|
1421 |
Evaluate all unwind-blocks as specified in Block>>valueNowOrOnUnwind: |
|
1422 |
and Block>>valueOnUnwindDo: on the way. |
|
1423 |
||
12841 | 1424 |
LIMITATION: |
4485 | 1425 |
currently a context can only be unwound by |
1426 |
the owning process - not from outside. |
|
1427 |
i.e. it is not possible for one thread to unwind |
|
1428 |
another threads context - which does not make sense anyway. |
|
1429 |
However, you can force another thread to do this in its own process |
|
1430 |
context, by giving it an interrupt action - this does make sense. |
|
1431 |
||
1432 |
Also, the compiler has an option (+optcontext) to create |
|
1433 |
non-returnable contexts (which are faster). |
|
1434 |
If such a context is restarted, a runtime error is raised." |
|
1435 |
||
1436 |
|con| |
|
1437 |
||
1438 |
self senderIsNil ifFalse:[ |
|
1439 |
con := thisContext evaluateUnwindActionsUpTo:self. |
|
1440 |
]. |
|
1441 |
||
1442 |
"oops, if nil, I am not on the calling chain; |
|
1443 |
(bad bad, unwind action have already been performed. |
|
1444 |
should we check for this situation first and NOT evaluate |
|
1445 |
the unwind actions in this case ?) |
|
1446 |
" |
|
1447 |
con isNil ifTrue:[ |
|
1448 |
" |
|
1449 |
tried to return to a context which is already dead |
|
1450 |
(i.e. the method/block has already executed a return) |
|
1451 |
" |
|
1452 |
^ self invalidReturnOrRestartError:#'unwindAndResume:' with:value |
|
1453 |
]. |
|
1454 |
" |
|
1455 |
now, that all unwind-actions are done, I can use the |
|
1456 |
low-level resume ... |
|
1457 |
" |
|
1458 |
^ self resume:value |
|
1459 |
! |
|
1460 |
||
12841 | 1461 |
unwindThenDo:aBlock |
328 | 1462 |
"return the value of aBlock from the receiver - i.e. simulate a '^ aBlock value'. |
13804 | 1463 |
If the context has already returned, report an error. |
328 | 1464 |
Evaluate all unwind-blocks as specified in Block>>valueNowOrOnUnwind: |
1465 |
and Block>>valueOnUnwindDo: on the way. |
|
1466 |
The block is evaluated AFTER all unwind actions are performed |
|
15688 | 1467 |
(i.e. the block's sender will be the receiving context, not the |
402 | 1468 |
currently executing context) |
328 | 1469 |
|
12841 | 1470 |
LIMITATION: |
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1471 |
currently a context can only be unwound by |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1472 |
the owning process - not from outside |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1473 |
i.e. it is not possible for one thread to unwindThenDo |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1474 |
another threads context - which does not make sense anyway. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1475 |
However, you can force another thread to do this in its own process |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1476 |
context, by giving it an interrupt action - this does make sense. |
328 | 1477 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1478 |
Also, the compiler has an option (+optcontext) to create |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1479 |
non-returnable contexts (which are faster). |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1480 |
If such a context is restarted, a runtime error is raised." |
328 | 1481 |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1482 |
|con| |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1483 |
|
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1484 |
self senderIsNil ifFalse:[ |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1485 |
con := thisContext evaluateUnwindActionsUpTo:self. |
328 | 1486 |
]. |
1487 |
||
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1488 |
"oops, if nil, I am not on the calling chain; |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1489 |
(bad bad, unwind action have already been performed. |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1490 |
should we check for this situation first and NOT evaluate |
328 | 1491 |
the unwind actions in this case ?) |
1492 |
" |
|
1493 |
con isNil ifTrue:[ |
|
4477
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1494 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1495 |
tried to return to a context which is already dead |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1496 |
(i.e. the method/block has already executed a return) |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1497 |
" |
ef99343d6756
better #unwind - ask receiver for handler block
Claus Gittinger <cg@exept.de>
parents:
4464
diff
changeset
|
1498 |
^ self invalidReturnOrRestartError:#'unwindThenDo:' with:aBlock |
328 | 1499 |
]. |
1500 |
" |
|
1501 |
now, that all unwind-actions are done, I can use the |
|
1502 |
low-level return ... |
|
1503 |
" |
|
12841 | 1504 |
^ self returnDoing:aBlock |
15688 | 1505 |
! |
1506 |
||
1507 |
unwindThenResend |
|
1508 |
"EXPERIMENTAL: resend the context's message (to the same receiver). |
|
1509 |
if the method's implementation has been changed in the meanwhile (for example, in the debugger), |
|
1510 |
the new code is executed. Otherwise the same code is reexecuted from the start. |
|
1511 |
Evaluate all unwind-blocks as specified in Block>>valueNowOrOnUnwind: |
|
1512 |
and Block>>valueOnUnwindDo: on the way. |
|
1513 |
The resend happens AFTER all unwind actions are performed |
|
1514 |
||
1515 |
LIMITATION: |
|
1516 |
currently a context can only be unwound by |
|
1517 |
the owning process - not from outside |
|
1518 |
i.e. it is not possible for one thread to unwindThenDo |
|
1519 |
another threads context - which does not make sense anyway. |
|
1520 |
However, you can force another thread to do this in its own process |
|
1521 |
context, by giving it an interrupt action - this does make sense. |
|
1522 |
||
1523 |
Also, the compiler has an option (+optcontext) to create |
|
1524 |
non-returnable contexts (which are faster). |
|
1525 |
If such a context is restarted, a runtime error is raised." |
|
1526 |
||
1527 |
|con| |
|
1528 |
||
1529 |
self senderIsNil ifFalse:[ |
|
1530 |
con := thisContext evaluateUnwindActionsUpTo:self. |
|
1531 |
]. |
|
1532 |
||
1533 |
"oops, if nil, I am not on the calling chain; |
|
1534 |
(bad bad, unwind action have already been performed. |
|
1535 |
should we check for this situation first and NOT evaluate |
|
1536 |
the unwind actions in this case ?) |
|
1537 |
" |
|
1538 |
con isNil ifTrue:[ |
|
1539 |
" |
|
1540 |
tried to return to a context which is already dead |
|
1541 |
(i.e. the method/block has already executed a return) |
|
1542 |
" |
|
1543 |
^ self invalidReturnOrRestartError:#'unwindThenResend' with:nil |
|
1544 |
]. |
|
1545 |
||
1546 |
"/ now, that all unwind-actions are done, I can use the low-level resend... |
|
1547 |
^ self resend |
|
1 | 1548 |
! ! |
623 | 1549 |
|
1550 |
!Context methodsFor:'printing & storing'! |
|
1551 |
||
1070
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1552 |
argStringFor:someObject |
15644 | 1553 |
|s| |
1070
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1554 |
%{ |
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1555 |
/* |
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1556 |
* special handling for (invalid) free objects. |
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1557 |
* these only appear if some primitiveCode does not correctly use SEND macros, |
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1558 |
* which may lead to sends to free objects. In normal operation, this 'cannot' happen. |
14051 | 1559 |
* However, these print methods are also invoked for low-level pointer errors, so better be prepared... |
12841 | 1560 |
*/ |
1070
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1561 |
if (__isNonNilObject(someObject) && (__qClass(someObject)==nil)) { |
15644 | 1562 |
s = __MKSTRING("FreeObject"); |
1070
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1563 |
} |
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1564 |
%}. |
11539 | 1565 |
s isNil ifTrue:[ |
15644 | 1566 |
s := someObject displayString. |
1567 |
s isNil ifTrue:[ |
|
1568 |
^ '**************** nil displayString of ',(someObject class name ? '??') |
|
1569 |
]. |
|
11539 | 1570 |
]. |
15644 | 1571 |
"/ JV@2013-04-26: Following is rubbish, the callers must handle string output correctly. |
1572 |
"/ moreover storeString does not work on self-referencing structures, but that doesn't matter |
|
1573 |
"/ for wide strings. |
|
1574 |
"/ SV@2013-08-19: I checked/fixed the callers to use CharacterWriteStreams. |
|
1575 |
"/ s isWideString ifTrue:[ |
|
1576 |
"/ "make sure that the object really returns something we can stream into a string" |
|
1577 |
"/ s := someObject storeString. |
|
1578 |
"/ ]. |
|
11539 | 1579 |
^ s |
1070
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1580 |
! |
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1581 |
|
623 | 1582 |
argsDisplayString |
14051 | 1583 |
^ String streamContents:[:s | self displayArgsOn:s ]. |
1584 |
||
1585 |
"Modified (format): / 07-03-2012 / 13:11:17 / cg" |
|
623 | 1586 |
! |
1587 |
||
6648 | 1588 |
displayArgsOn:aStream |
15388 | 1589 |
| n "{ Class: SmallInteger }" |
1590 |
s | |
|
6648 | 1591 |
|
1592 |
n := self numArgs. |
|
1593 |
1 to:n do:[:index | |
|
15388 | 1594 |
Error handle:[:ex | |
1595 |
s := 'Error in argString'. |
|
1596 |
] do:[ |
|
15644 | 1597 |
s := self argStringFor:(self at:index). |
15388 | 1598 |
]. |
1599 |
||
1600 |
aStream nextPutAll:(s contractTo:100). |
|
15383 | 1601 |
index ~~ n ifTrue:[ aStream space ]. |
6648 | 1602 |
]. |
14051 | 1603 |
|
1604 |
"Modified: / 07-03-2012 / 13:09:17 / cg" |
|
6648 | 1605 |
! |
1606 |
||
14293
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1607 |
displayOn:aGCOrStream |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1608 |
"return a string to display the receiver - for display in Inspector" |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1609 |
|
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1610 |
"/ what a kludge - Dolphin and Squeak mean: printOn: a stream; |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1611 |
"/ ST/X (and some old ST80's) mean: draw-yourself on a GC. |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1612 |
(aGCOrStream isStream) ifFalse:[ |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1613 |
^ super displayOn:aGCOrStream |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1614 |
]. |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1615 |
|
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1616 |
aGCOrStream |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1617 |
nextPutAll:self class name; |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1618 |
nextPut:$(. |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1619 |
self printOn:aGCOrStream. |
f1bc5da76f93
Implement #displayOn: instead of #displayString
Stefan Vogel <sv@exept.de>
parents:
14225
diff
changeset
|
1620 |
aGCOrStream nextPut:$). |
623 | 1621 |
! |
1622 |
||
6648 | 1623 |
fullPrintAllOn:aStream |
12789 | 1624 |
"print a full walkback (incl arguments) starting at the receiver" |
6648 | 1625 |
|
15010 | 1626 |
self withAllSendersDo:[:con | con fullPrintOn:aStream. aStream cr]. |
6648 | 1627 |
|
1628 |
" |
|
1629 |
thisContext fullPrintAllOn:Transcript |
|
1630 |
" |
|
1631 |
||
1632 |
"Created: 15.1.1997 / 18:09:05 / cg" |
|
1633 |
! |
|
1634 |
||
13612 | 1635 |
fullPrintAllString |
1636 |
"return a string containing the full walkback (incl. arguments)" |
|
1637 |
||
15644 | 1638 |
^ String streamContents:[:s | self fullPrintAllOn:s] |
13612 | 1639 |
|
1640 |
" |
|
1641 |
thisContext fullPrintAllString |
|
1642 |
" |
|
1643 |
||
1644 |
"Created: / 21-08-2011 / 07:37:36 / cg" |
|
1645 |
! |
|
1646 |
||
6648 | 1647 |
fullPrintOn:aStream |
12789 | 1648 |
"append a verbose description (incl. arguments) of the receiver onto aStream" |
6648 | 1649 |
|
15383 | 1650 |
self printReceiverOn:aStream. |
12841 | 1651 |
aStream nextPutAll:' >> '. |
11311 | 1652 |
self selector printOn:aStream. "show as string (as symbol looks too ugly in browser ...)" |
1653 |
"/ self selector storeOn:aStream. "show as symbol" |
|
8578 | 1654 |
|
6648 | 1655 |
self size ~~ 0 ifTrue: [ |
15383 | 1656 |
aStream space. |
6648 | 1657 |
self displayArgsOn:aStream |
1658 |
]. |
|
12841 | 1659 |
aStream nextPutAll:' {'. |
1660 |
self identityHash printOn:aStream. |
|
15383 | 1661 |
aStream nextPut:$}. |
12841 | 1662 |
|
1663 |
aStream nextPutAll:' ['. |
|
6648 | 1664 |
self lineNumber printOn:aStream. |
15383 | 1665 |
aStream nextPut:$]. |
6648 | 1666 |
|
1667 |
" |
|
1668 |
thisContext fullPrintOn:Transcript |
|
1669 |
" |
|
1670 |
||
1671 |
"Modified: 20.5.1996 / 10:27:14 / cg" |
|
1672 |
"Created: 15.1.1997 / 18:09:06 / cg" |
|
1673 |
! |
|
1674 |
||
623 | 1675 |
fullPrintString |
1676 |
"return a string describing the context - this includes the linenumber, |
|
1677 |
receiver printString and argument printString" |
|
1678 |
||
15644 | 1679 |
^ String streamContents:[:s | self fullPrintOn:s] |
623 | 1680 |
|
1681 |
" |
|
1682 |
thisContext fullPrintString |
|
1683 |
" |
|
1684 |
! |
|
1685 |
||
1686 |
methodPrintString |
|
12841 | 1687 |
"return a string describing the contexts method as 'implementorClass>>selector'" |
623 | 1688 |
|
1853
09cd1e8df9a2
use new Method>>who interface
Claus Gittinger <cg@exept.de>
parents:
1810
diff
changeset
|
1689 |
|mthd who| |
623 | 1690 |
|
1691 |
mthd := self method. |
|
1692 |
mthd notNil ifTrue:[ |
|
11306
c0c5c6a7054a
Print methods: Show message sends as Class >> #selector (with the #),
Stefan Vogel <sv@exept.de>
parents:
10943
diff
changeset
|
1693 |
who := mthd who. |
c0c5c6a7054a
Print methods: Show message sends as Class >> #selector (with the #),
Stefan Vogel <sv@exept.de>
parents:
10943
diff
changeset
|
1694 |
who notNil ifTrue:[ |
c0c5c6a7054a
Print methods: Show message sends as Class >> #selector (with the #),
Stefan Vogel <sv@exept.de>
parents:
10943
diff
changeset
|
1695 |
^ who methodClass name , ' >> #' , who methodSelector |
c0c5c6a7054a
Print methods: Show message sends as Class >> #selector (with the #),
Stefan Vogel <sv@exept.de>
parents:
10943
diff
changeset
|
1696 |
] |
623 | 1697 |
]. |
1698 |
^ mthd displayString. |
|
1699 |
||
1700 |
" |
|
12841 | 1701 |
thisContext methodPrintString |
1702 |
thisContext sender methodPrintString |
|
623 | 1703 |
" |
1853
09cd1e8df9a2
use new Method>>who interface
Claus Gittinger <cg@exept.de>
parents:
1810
diff
changeset
|
1704 |
|
09cd1e8df9a2
use new Method>>who interface
Claus Gittinger <cg@exept.de>
parents:
1810
diff
changeset
|
1705 |
"Modified: 1.11.1996 / 16:21:49 / cg" |
623 | 1706 |
! |
1707 |
||
12789 | 1708 |
printAllOn:aStream |
1709 |
"print a brief walkback (excl. arguments) starting at the receiver" |
|
1710 |
||
15010 | 1711 |
self withAllSendersDo:[:con | con printOn:aStream. aStream cr]. |
12789 | 1712 |
|
1713 |
" |
|
1714 |
thisContext printAllOn:Transcript |
|
1715 |
" |
|
1716 |
||
1717 |
"Created: 15.1.1997 / 18:09:05 / cg" |
|
1718 |
! |
|
1719 |
||
13612 | 1720 |
printAllString |
1721 |
"return a string containing the walkback (excl. arguments)" |
|
1722 |
||
1723 |
|s| |
|
1724 |
||
15383 | 1725 |
s := WriteStream on:''. |
13612 | 1726 |
self printAllOn:s. |
1727 |
^ s contents |
|
1728 |
||
1729 |
" |
|
1730 |
thisContext printAllString |
|
1731 |
" |
|
1732 |
||
1733 |
"Created: / 21-08-2011 / 07:38:05 / cg" |
|
1734 |
! |
|
1735 |
||
623 | 1736 |
printOn:aStream |
12789 | 1737 |
"append a brief description (excl. arguments) of the receiver onto aStream" |
623 | 1738 |
|
15383 | 1739 |
self printReceiverOn:aStream. |
10549 | 1740 |
"/ aStream nextPutAll:' '. |
1741 |
aStream nextPutAll:' >> '. |
|
1742 |
||
1743 |
aStream bold. |
|
11310
830490e3ac43
dont use storeString of selector in #printOn:
Claus Gittinger <cg@exept.de>
parents:
11306
diff
changeset
|
1744 |
self selector printOn:aStream. "show as string (as symbol looks too ugly in browser ...)" |
830490e3ac43
dont use storeString of selector in #printOn:
Claus Gittinger <cg@exept.de>
parents:
11306
diff
changeset
|
1745 |
"/ self selector storeOn:aStream. "show as symbol" |
10549 | 1746 |
aStream normal. |
4393 | 1747 |
aStream space. |
14225 | 1748 |
(method notNil and:[method isWrapped]) ifTrue:[ |
14302 | 1749 |
aStream nextPutAll:'(wrapped) ' |
14225 | 1750 |
]. |
4393 | 1751 |
aStream nextPutAll:' ['; nextPutAll:self lineNumber printString; nextPutAll:']' . |
1752 |
||
14302 | 1753 |
"Modified: / 05-08-2012 / 12:00:00 / cg" |
623 | 1754 |
! |
1755 |
||
15383 | 1756 |
printReceiverOn:aStream |
1757 |
"print description of the receiver of the context to aStream" |
|
1758 |
||
1759 |
|receiverClass receiverClassName implementorClass| |
|
1760 |
||
1761 |
receiverClassName := self safeReceiverClassName. |
|
1762 |
receiverClassName notNil ifTrue:[ |
|
1763 |
"if we come here, this is a context with an illegal class" |
|
1764 |
receiverClassName printOn:aStream. |
|
1765 |
^ self. |
|
1766 |
]. |
|
1070
cf35b237612d
in argPrint: handle invalid objects (avoids crash in MiniDebugger when debugging bad primitives)
Claus Gittinger <cg@exept.de>
parents:
1051
diff
changeset
|
1767 |
|
623 | 1768 |
receiverClass := receiver class. |
15383 | 1769 |
|
1770 |
(receiverClass == SmallInteger or:[receiverClass == Float]) ifTrue:[ |
|
1771 |
aStream nextPut:$(. receiver printOn:aStream. aStream nextPutAll:') '. |
|
1772 |
]. |
|
1773 |
||
3923 | 1774 |
receiverClass isJavaClass ifTrue:[ |
15383 | 1775 |
receiverClass displayOn:aStream |
3923 | 1776 |
] ifFalse:[ |
13519
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1777 |
"/ (receiverClass isBehavior |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1778 |
"/ and:[receiverClass isMeta |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1779 |
"/ and:[receiverClass soleInstance isJavaClass]]) ifTrue:[ |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1780 |
"/ "/ receiverClassName := receiverClass soleInstance fullName. |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1781 |
"/ receiverClassName := receiverClass name. |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1782 |
"/ ] ifFalse:[ |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1783 |
"/ receiverClassName := receiverClass name. |
16c0afd67cae
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
13516
diff
changeset
|
1784 |
"/ ]. |
15383 | 1785 |
(receiverClass name ? '????') printOn:aStream. |
3923 | 1786 |
]. |
15383 | 1787 |
|
1788 |
(selector notNil or:[method notNil]) ifTrue:[ |
|
14700 | 1789 |
"/ implementorClass := self searchClass whichClassIncludesSelector:selector. |
623 | 1790 |
|
3923 | 1791 |
" |
1792 |
kludge to avoid slow search for containing class |
|
1793 |
" |
|
14700 | 1794 |
(method notNil |
15383 | 1795 |
or:[selector ~~ #doIt and:[selector ~~ #doIt:]]) ifTrue:[ |
12841 | 1796 |
implementorClass := self methodClass. |
14413
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1797 |
implementorClass isNil ifTrue:[ |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1798 |
" |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1799 |
kludge for the frame called by a wrappedmethod; |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1800 |
the wrappedmethod is in the class, so its mclass is correct. |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1801 |
however, the originalmethod is invoked via performMethod, and its mclass |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1802 |
is nil. Care for this here. Think about keeping the mclass in the original method. |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1803 |
" |
14418
6558e5c3b32e
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14413
diff
changeset
|
1804 |
(method notNil and:[method isWrapped not]) ifTrue:[ |
14413
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1805 |
WrappedMethod allInstancesDo:[:wrapped | |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1806 |
wrapped originalMethodIfWrapped == method ifTrue:[ |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1807 |
implementorClass := wrapped mclass. |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1808 |
]. |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1809 |
]. |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1810 |
] |
7acfc6568d15
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14302
diff
changeset
|
1811 |
]. |
3923 | 1812 |
]. |
1813 |
||
1814 |
implementorClass notNil ifTrue: [ |
|
1815 |
(implementorClass ~~ receiverClass) ifTrue: [ |
|
15383 | 1816 |
aStream nextPut:$(. |
1817 |
(implementorClass name ? '???') printOn:aStream. |
|
1818 |
aStream nextPut:$). |
|
3923 | 1819 |
] |
1820 |
] ifFalse:[ |
|
1821 |
self searchClass ~~ receiverClass ifTrue:[ |
|
15383 | 1822 |
aStream nextPut:$(. |
1823 |
(self searchClass name ? '???') printOn:aStream. |
|
1824 |
aStream nextPut:$). |
|
3923 | 1825 |
]. |
1826 |
" |
|
1827 |
kludge for doIt - these unbound methods are not |
|
1828 |
found in the classes methodDictionary |
|
1829 |
" |
|
14700 | 1830 |
true "(selector ~~ #doIt and:[selector ~~ #doIt:])" ifTrue:[ |
1831 |
" |
|
1832 |
kludge for methods invoked explicitly via valueWithReceiver... |
|
1833 |
" |
|
1834 |
(self sender notNil |
|
1835 |
and:[ self sender receiver isMethod |
|
1836 |
and:[ self sender selector startsWith:'valueWithReceiver:' ]]) ifTrue:[ |
|
15383 | 1837 |
aStream nextPutAll:'(**DIRECTED**)'. |
14700 | 1838 |
] ifFalse:[ |
15383 | 1839 |
aStream nextPutAll:'(**NONE**)'. |
14700 | 1840 |
] |
3923 | 1841 |
] |
1842 |
] |
|
623 | 1843 |
]. |
1844 |
||
14216
e972d852ed60
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14214
diff
changeset
|
1845 |
"Modified: / 13-06-2012 / 14:49:33 / cg" |
10549 | 1846 |
! |
1847 |
||
15383 | 1848 |
receiverPrintString |
1849 |
"return a string describing the receiver of the context" |
|
1850 |
||
1851 |
|s| |
|
1852 |
||
1853 |
s := WriteStream on:''. |
|
1854 |
self printReceiverOn:s. |
|
1855 |
^ s contents |
|
1856 |
||
1857 |
" |
|
1858 |
thisContext receiverPrintString |
|
1859 |
" |
|
1860 |
! |
|
1861 |
||
1862 |
safeReceiverClassName |
|
10549 | 1863 |
"return the receivers class-name string or nil, if the receiver is invalid. |
1864 |
This cares for invalid (free) objects which may appear with bad primitive code, |
|
1865 |
and prevents a crash in such a case." |
|
1866 |
||
1867 |
|receiverClassName| |
|
1868 |
||
1869 |
%{ |
|
1870 |
/* |
|
1871 |
* special handling for (invalid) free objects. |
|
1872 |
* these only appear if some primitiveCode does not correctly use SEND macros, |
|
1873 |
* which may lead to sends to free objects. In normal operation, this 'cannot' happen. |
|
12841 | 1874 |
*/ |
10549 | 1875 |
if (__isNonNilObject(__INST(receiver)) && (__qClass(__INST(receiver))==nil)) { |
1876 |
receiverClassName = __MKSTRING("FreeObject"); |
|
1877 |
} |
|
1878 |
%}. |
|
1879 |
^ receiverClassName |
|
1880 |
||
1881 |
"Created: / 21-05-2007 / 13:19:37 / cg" |
|
623 | 1882 |
! ! |
1883 |
||
7257 | 1884 |
!Context methodsFor:'private-accessing'! |
623 | 1885 |
|
11340
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1886 |
isMarkedForUnwind |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1887 |
"true if the mark for unwind flag is set in the receiver. |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1888 |
The VM needs this to know that some special action is to be performed with |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1889 |
this context - a highly internal mechanism and not for public use." |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1890 |
|
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1891 |
%{ /* NOCONTEXT */ |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1892 |
RETURN ( ((INT)__INST(flags) & __MASKSMALLINT(__UNWIND_MARK)) ? true : false ); |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1893 |
%} |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1894 |
" |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1895 |
thisContext isMarkedForUnwind |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1896 |
" |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1897 |
! |
ceae06796c52
unwinding fixed for on:do:ensure:
Claus Gittinger <cg@exept.de>
parents:
11337
diff
changeset
|
1898 |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1899 |
markForHandle |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1900 |
"set the mark for exception handle flag in the receiver. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1901 |
The VM needs this to know that some special action is to be performed with |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1902 |
this context - a highly internal mechanism and not for public use." |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1903 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1904 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1905 |
__INST(flags) = (OBJ)((INT)__INST(flags) | __MASKSMALLINT(__HANDLE_MARK)); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1906 |
%} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1907 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1908 |
"Modified: 13.12.1995 / 19:05:22 / cg" |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1909 |
! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1910 |
|
753
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1911 |
markForInterrupt |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1912 |
"set the interrupt flag. |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1913 |
The VM needs this to know that some special action is to be performed with |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1914 |
this context upon return - a highly internal mechanism and not for public use." |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1915 |
|
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1916 |
%{ /* NOCONTEXT */ |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1917 |
__markInterrupted(__ContextInstPtr(self)); |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1918 |
%} |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1919 |
! |
81d54fc53a18
added mechanism to force a stepInterrupt whenever a context returns or unwinds
Claus Gittinger <cg@exept.de>
parents:
749
diff
changeset
|
1920 |
|
1727 | 1921 |
markForInterruptOnUnwind |
1922 |
"set the interrupt-on-unwind flag in the receiver. |
|
1923 |
The VM will generate a stepInterrupt, when this context returns or |
|
1924 |
is unwound. This is used by the debugger for faster single-stepping; |
|
1925 |
- a highly internal mechanism and not for public use." |
|
1926 |
||
1927 |
%{ /* NOCONTEXT */ |
|
3508 | 1928 |
__INST(flags) = (OBJ)((INT)__INST(flags) | __MASKSMALLINT(__IRQ_ON_UNWIND)); |
1727 | 1929 |
%} |
1930 |
! |
|
1931 |
||
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1932 |
markForRaise |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1933 |
"set the mark for exception raise flag in the receiver. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1934 |
The VM needs this to know that some special action is to be performed with |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1935 |
this context - a highly internal mechanism and not for public use." |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1936 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1937 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1938 |
__INST(flags) = (OBJ)((INT)__INST(flags) | __MASKSMALLINT(__RAISE_MARK)); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1939 |
%} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1940 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1941 |
"Modified: 13.12.1995 / 19:05:22 / cg" |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1942 |
! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1943 |
|
623 | 1944 |
markForUnwind |
749 | 1945 |
"set the mark for unwind flag in the receiver. |
1946 |
The VM needs this to know that some special action is to be performed with |
|
1947 |
this context - a highly internal mechanism and not for public use." |
|
1948 |
||
623 | 1949 |
%{ /* NOCONTEXT */ |
1133 | 1950 |
__INST(flags) = (OBJ)((INT)__INST(flags) | __MASKSMALLINT(__UNWIND_MARK)); |
623 | 1951 |
%} |
749 | 1952 |
|
1953 |
"Modified: 13.12.1995 / 19:05:22 / cg" |
|
623 | 1954 |
! |
1955 |
||
5780 | 1956 |
setHome:aContext |
1957 |
"set the homeContext. |
|
1958 |
DANGER: this is for experimental, internal use only (byteCode interpreters)" |
|
1959 |
||
1960 |
home := aContext. |
|
1961 |
! |
|
1962 |
||
1963 |
setSender:aContext |
|
1964 |
"set the sender of the context. |
|
1965 |
DANGER: this is for experimental, internal use only (byteCode interpreters)" |
|
1966 |
||
1967 |
%{ /* NOCONTEXT */ |
|
1968 |
__INST(sender_) = aContext; |
|
1969 |
%} |
|
1970 |
! |
|
1971 |
||
623 | 1972 |
unmarkForUnwind |
749 | 1973 |
"clear the mark for unwind flag in the receiver. |
1974 |
The VM needs this to know that some special action is to be performed with |
|
1975 |
this context - a highly internal mechanism and not for public use." |
|
1976 |
||
623 | 1977 |
%{ /* NOCONTEXT */ |
1133 | 1978 |
__INST(flags) = (OBJ)((INT)__INST(flags) & ~__MASKSMALLINT(__UNWIND_MARK)); |
623 | 1979 |
%} |
1980 |
! ! |
|
1981 |
||
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1982 |
!Context methodsFor:'searching'! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
1983 |
|
8284 | 1984 |
findExceptional |
12841 | 1985 |
"walk along the sender chain (starting with the sender), |
8284 | 1986 |
for a context which is marked as handle or raise context. |
1987 |
This non-standard interface is only to be used by exception" |
|
1988 |
||
1989 |
"/ this could have been (actually: was) implemented as: |
|
1990 |
"/ |
|
1991 |
"/ |con| |
|
1992 |
"/ |
|
1993 |
"/ con := self. |
|
1994 |
"/ [con notNil] whileTrue:[ |
|
1995 |
"/ [con isHandleContext] ifTrue:[^con]. |
|
1996 |
"/ [con isRaiseContext] ifTrue:[^con]. |
|
1997 |
"/ con := con sender. |
|
1998 |
"/ ]. |
|
1999 |
"/ ^ nil |
|
2000 |
"/ |
|
2001 |
"/ and the code below does exactly this (somewhat faster, though). |
|
2002 |
"/ |
|
2003 |
"/ (it avoids referencing all intermediate contexts, which would mark them special, |
|
2004 |
"/ although they aren't really - this is expert knowledge, no need to understand that ...) |
|
2005 |
||
2006 |
%{ /* NOCONTEXT */ |
|
2007 |
||
2008 |
OBJ theContext; |
|
2009 |
||
2010 |
theContext = self; |
|
2011 |
while (__isNonNilObject(theContext)) { |
|
2012 |
if ((INT)(__ContextInstPtr(theContext)->c_flags) & __MASKSMALLINT(__HANDLE_MARK|__RAISE_MARK)) { |
|
2013 |
if (__isLazy(theContext)) { |
|
2014 |
__PATCHUPCONTEXT(theContext); |
|
2015 |
} |
|
2016 |
||
2017 |
if (! __isNonLIFO(theContext)) { |
|
12841 | 2018 |
/* |
2019 |
* to be prepared for the worst situation |
|
8284 | 2020 |
* (the sender is not stored, so the trap won't catch it) |
2021 |
* make the writeBarrier trigger manually. |
|
2022 |
* We'll see, if this is really required. |
|
2023 |
*/ |
|
2024 |
theContext->o_space |= CATCHMARK; |
|
2025 |
#if 0 |
|
15232 | 2026 |
__markNonLIFO(theContext); |
8284 | 2027 |
#endif |
2028 |
} |
|
2029 |
RETURN (theContext); |
|
2030 |
} |
|
2031 |
theContext = __ContextInstPtr(theContext)->c_sender; |
|
2032 |
} |
|
2033 |
%}. |
|
2034 |
^ nil |
|
2035 |
! |
|
2036 |
||
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2037 |
findNextContextWithSelector:selector1 or:selector2 or:selector3 |
12841 | 2038 |
"walk along the sender chain (starting with the sender), |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2039 |
for a context with either one of the given selectors. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2040 |
This non-standard interface is only to be used by exception" |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2041 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2042 |
"/ this could have been (actually: was) implemented as: |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2043 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2044 |
"/ |con| |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2045 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2046 |
"/ con := self sender. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2047 |
"/ [con notNil] whileTrue:[ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2048 |
"/ con selector == aSelector ifTrue:[^ con]. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2049 |
"/ con := con sender. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2050 |
"/ ]. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2051 |
"/ ^ nil |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2052 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2053 |
"/ and the code below does exactly this (somewhat faster, though). |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2054 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2055 |
"/ (it avoids referencing all intermediate contexts, which would mark them special, |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2056 |
"/ although they aren't really - this is expert knowledge, no need to understand that ...) |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2057 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2058 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2059 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2060 |
OBJ theContext; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2061 |
OBJ sel; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2062 |
OBJ __FETCHSELECTOR(); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2063 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2064 |
theContext = __INST(sender_); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2065 |
while (__isNonNilObject(theContext)) { |
5422 | 2066 |
if (__isLazy(theContext)) { |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2067 |
#ifdef TRADITIONAL_STACK_FRAME |
5422 | 2068 |
sel = __FETCHSELECTOR(theContext); |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2069 |
#else |
5422 | 2070 |
/* mhmh - not really needed */ |
2071 |
__PATCHUPCONTEXT(theContext); |
|
2072 |
sel = __ContextInstPtr(theContext)->c_selector; |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2073 |
#endif |
5422 | 2074 |
} else { |
2075 |
sel = __ContextInstPtr(theContext)->c_selector; |
|
2076 |
} |
|
2077 |
||
2078 |
if ((sel == selector1) |
|
2079 |
|| ((selector2 != nil) && (sel == selector2)) |
|
2080 |
|| ((selector3 != nil) && (sel == selector3))) { |
|
2081 |
if (__isLazy(theContext)) { |
|
2082 |
__PATCHUPCONTEXT(theContext); |
|
2083 |
} |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2084 |
|
5422 | 2085 |
if (! __isNonLIFO(theContext)) { |
12841 | 2086 |
/* |
2087 |
* to be prepared for the worst situation |
|
15232 | 2088 |
* (the sender is not stored, so the trap won't catch it) |
5422 | 2089 |
* make the writeBarrier trigger manually. |
2090 |
* We'll see, if this is really required. |
|
2091 |
*/ |
|
2092 |
theContext->o_space |= CATCHMARK; |
|
15232 | 2093 |
__markNonLIFO(theContext); |
5422 | 2094 |
} |
2095 |
RETURN (theContext); |
|
2096 |
} |
|
2097 |
theContext = __ContextInstPtr(theContext)->c_sender; |
|
2098 |
} |
|
2099 |
RETURN (nil); |
|
2100 |
%}. |
|
2101 |
" |
|
2102 |
|con sel| |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2103 |
|
5422 | 2104 |
con := self sender. |
2105 |
[con notNil] whileTrue:[ |
|
2106 |
sel := con selector. |
|
2107 |
sel == selector1 ifTrue:[^ con]. |
|
2108 |
(selector2 notNil and:[sel == selector2]) ifTrue:[^ con]. |
|
2109 |
(selector3 notNil and:[sel == selector3]) ifTrue:[^ con]. |
|
2110 |
con := con sender. |
|
2111 |
]. |
|
2112 |
^ nil |
|
2113 |
" |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2114 |
! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2115 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2116 |
findNextUnwindContextOr:aContext |
12841 | 2117 |
"walk along the sender chain (starting at the sender), |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2118 |
for a context marked for unwindAction or aContext. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2119 |
This non-standard interface is only to be used by mySelf" |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2120 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2121 |
"/ this could have been (actually: was) implemented as: |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2122 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2123 |
"/ |con| |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2124 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2125 |
"/ con := self sender. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2126 |
"/ [con notNil |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2127 |
"/ and:[con ~~ aContext |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2128 |
"/ and:[con isUnwindContext not]]] whileTrue:[con := con sender]. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2129 |
"/ ^ con |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2130 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2131 |
"/ and the code below does exactly this (somewhat faster, though). |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2132 |
"/ (it avoids referencing all intermediate contexts, which would mark them special, |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2133 |
"/ although they aren't really - this is expert knowledge, no need to understand that ...) |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2134 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2135 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2136 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2137 |
OBJ theContext; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2138 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2139 |
if (self == aContext) { |
4485 | 2140 |
RETURN (self); |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2141 |
} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2142 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2143 |
theContext = __INST(sender_); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2144 |
while (__isNonNilObject(theContext)) { |
4485 | 2145 |
if ((theContext == aContext) |
2146 |
|| ((INT)(__ContextInstPtr(theContext)->c_flags) & __MASKSMALLINT(__UNWIND_MARK))) { |
|
2147 |
if (__isLazy(theContext)) { |
|
2148 |
__PATCHUPCONTEXT(theContext); |
|
2149 |
} |
|
2150 |
if (! __isNonLIFO(theContext)) { |
|
2151 |
/* |
|
2152 |
* to be prepared for the worst situation |
|
15232 | 2153 |
* (the sender is not stored, so the trap won't catch it) |
4485 | 2154 |
* make the writeBarrier trigger manually. |
2155 |
* We'll see, if this is really required. |
|
2156 |
*/ |
|
2157 |
theContext->o_space |= CATCHMARK; |
|
2158 |
#if 0 |
|
15232 | 2159 |
__markNonLIFO(theContext); |
4485 | 2160 |
#endif |
2161 |
} |
|
2162 |
RETURN (theContext); |
|
2163 |
} |
|
2164 |
theContext = __ContextInstPtr(theContext)->c_sender; |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2165 |
} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2166 |
%}. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2167 |
^ nil |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2168 |
! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2169 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2170 |
findSpecialHandle:findHandleContext raise:findRaiseContext |
12841 | 2171 |
"walk along the sender chain (starting with the sender), |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2172 |
for a context which is marked as handle or raise context. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2173 |
This non-standard interface is only to be used by exception" |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2174 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2175 |
"/ this could have been (actually: was) implemented as: |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2176 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2177 |
"/ |con| |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2178 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2179 |
"/ con := self sender. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2180 |
"/ [con notNil] whileTrue:[ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2181 |
"/ (findHandleContext and:[con isHandleContext]) ifTrue:[^con]. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2182 |
"/ (findRaiseContext and:[con isRaiseContext]) ifTrue:[^con]. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2183 |
"/ con := con sender. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2184 |
"/ ]. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2185 |
"/ ^ nil |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2186 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2187 |
"/ and the code below does exactly this (somewhat faster, though). |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2188 |
"/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2189 |
"/ (it avoids referencing all intermediate contexts, which would mark them special, |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2190 |
"/ although they aren't really - this is expert knowledge, no need to understand that ...) |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2191 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2192 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2193 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2194 |
OBJ theContext; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2195 |
int flagMask = 0; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2196 |
INT mask; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2197 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2198 |
if (findHandleContext == true) |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2199 |
flagMask = __HANDLE_MARK; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2200 |
if (findRaiseContext == true) |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2201 |
flagMask |= __RAISE_MARK; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2202 |
|
12841 | 2203 |
mask = __MASKSMALLINT(flagMask); |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2204 |
theContext = __INST(sender_); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2205 |
while (__isNonNilObject(theContext)) { |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2206 |
if ((INT)(__ContextInstPtr(theContext)->c_flags) & mask) { |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2207 |
if (__isLazy(theContext)) { |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2208 |
__PATCHUPCONTEXT(theContext); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2209 |
} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2210 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2211 |
if (! __isNonLIFO(theContext)) { |
12841 | 2212 |
/* |
2213 |
* to be prepared for the worst situation |
|
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2214 |
* (the sender is not stored, so the trap won't catch it) |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2215 |
* make the writeBarrier trigger manually. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2216 |
* We'll see, if this is really required. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2217 |
*/ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2218 |
theContext->o_space |= CATCHMARK; |
4485 | 2219 |
#if 0 |
15232 | 2220 |
__markNonLIFO(theContext); |
4485 | 2221 |
#endif |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2222 |
} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2223 |
RETURN (theContext); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2224 |
} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2225 |
theContext = __ContextInstPtr(theContext)->c_sender; |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2226 |
} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2227 |
%}. |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2228 |
^ nil |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2229 |
! ! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2230 |
|
1051 | 2231 |
!Context methodsFor:'special accessing'! |
2232 |
||
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2233 |
argAndVarNames |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2234 |
"helper: given a context, return a collection of arg&var names" |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2235 |
|
15644 | 2236 |
|homeContext homeMethod block numArgs numVars m src |
8217 | 2237 |
sel isDoIt blocksLineNr extractFromBlock sender| |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2238 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2239 |
numArgs := self numArgs. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2240 |
numVars := self numVars. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2241 |
(numArgs == 0 and:[numVars == 0]) ifTrue:[^ #()]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2242 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2243 |
homeContext := self methodHome. |
7652 | 2244 |
homeContext notNil ifTrue:[ |
2245 |
sel := homeContext selector. |
|
15644 | 2246 |
homeMethod := homeContext method. |
7652 | 2247 |
]. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2248 |
|
12841 | 2249 |
extractFromBlock := |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2250 |
[ |
8772
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2251 |
|blockNode argNames varNames vars args blocksHome| |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2252 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2253 |
blockNode := Compiler |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2254 |
blockAtLine:blocksLineNr |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2255 |
in:m |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2256 |
orSource:src |
12841 | 2257 |
numArgs:numArgs |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2258 |
numVars:numVars. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2259 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2260 |
blockNode notNil ifTrue:[ |
8772
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2261 |
"/ a kludge |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2262 |
blockNode lineNumber == blocksLineNr ifTrue:[ |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2263 |
blocksHome := blockNode home. |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2264 |
(blocksHome notNil and:[blocksHome isBlockNode]) ifTrue:[ |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2265 |
(blocksHome numArgs == numArgs |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2266 |
and:[ blocksHome numVars == numVars ]) ifTrue:[ |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2267 |
blockNode := blocksHome |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2268 |
]. |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2269 |
]. |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2270 |
]. |
9a5d7a368a34
kludge for a blocks context arg-and-var names
Claus Gittinger <cg@exept.de>
parents:
8687
diff
changeset
|
2271 |
|
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2272 |
argNames := #(). |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2273 |
varNames := #(). |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2274 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2275 |
numArgs > 0 ifTrue:[ |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2276 |
vars := blockNode arguments. |
15644 | 2277 |
vars notEmptyOrNil ifTrue:[ |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2278 |
argNames := vars collect:[:var | var name] |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2279 |
] |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2280 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2281 |
numVars > 0 ifTrue:[ |
15644 | 2282 |
vars := blockNode variablesIncludingInlined: (homeMethod code notNil and:[homeMethod byteCode isNil]). |
2283 |
vars notEmptyOrNil ifTrue:[ |
|
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2284 |
varNames := vars collect:[:var | var name]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2285 |
] |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2286 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2287 |
^ argNames , varNames |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2288 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2289 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2290 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2291 |
"/ #doIt needs special handling below |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2292 |
isDoIt := (sel == #'doIt') or:[sel == #'doIt:']. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2293 |
self isBlockContext ifFalse:[ |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2294 |
isDoIt ifTrue:[ |
15644 | 2295 |
homeMethod notNil ifTrue:[ |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2296 |
"/ special for #doIt |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2297 |
m := nil. |
15644 | 2298 |
src := ('[' , homeMethod source , '\]') withCRs. |
8217 | 2299 |
"/ blocksLineNr := self lineNumber. |
8242
594cfd2150f7
oops - must care for doIt contexts
Claus Gittinger <cg@exept.de>
parents:
8217
diff
changeset
|
2300 |
blocksLineNr := (self home ? self) lineNumber. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2301 |
extractFromBlock value. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2302 |
] |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2303 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2304 |
|
15644 | 2305 |
homeMethod notNil ifTrue:[ |
2306 |
^ homeMethod methodArgAndVarNamesInContext: self. |
|
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2307 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2308 |
^ #() |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2309 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2310 |
|
15644 | 2311 |
homeMethod notNil ifTrue:[ |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2312 |
isDoIt ifTrue:[ |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2313 |
"/ special for #doIt |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2314 |
"/ my source is found in the method. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2315 |
m := nil. |
15644 | 2316 |
src := ('[' , homeMethod source , '\]') withCRs. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2317 |
] ifFalse:[ |
15644 | 2318 |
m := homeMethod. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2319 |
src := nil. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2320 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2321 |
blocksLineNr := self lineNumber. |
8020 | 2322 |
extractFromBlock value. |
7747
27be5f627b03
fixed argAndVarNames for inner blocks.
Claus Gittinger <cg@exept.de>
parents:
7652
diff
changeset
|
2323 |
blocksLineNr := self home lineNumber. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2324 |
extractFromBlock value. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2325 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2326 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2327 |
blocksLineNr isNil ifTrue:[ |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2328 |
self isBlockContext ifTrue:[ |
8217 | 2329 |
sender := self sender. |
2330 |
(sender notNil |
|
2331 |
and:[sender receiver isBlock |
|
2332 |
and:[sender selector startsWith:'value']]) |
|
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2333 |
ifTrue:[ |
8217 | 2334 |
block := sender receiver. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2335 |
src := block source. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2336 |
src isNil ifTrue:[ |
8488 | 2337 |
self error:'no source'. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2338 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2339 |
blocksLineNr := 1. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2340 |
extractFromBlock value. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2341 |
]. |
8217 | 2342 |
sender := nil. |
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2343 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2344 |
]. |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2345 |
|
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2346 |
^ #() |
15644 | 2347 |
|
2348 |
"Modified: / 19-08-2013 / 12:13:20 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
|
7568
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2349 |
! |
1dc12a1080b0
** changed access to blockContexts args and vars -- please watch out
penk
parents:
7324
diff
changeset
|
2350 |
|
4557 | 2351 |
canResume |
2352 |
"return true, if the receiver allows to be resumed. |
|
2353 |
Due to the implementation, this requires that the context which |
|
2354 |
is right below the receiver is returnable." |
|
2355 |
||
2356 |
|theContext| |
|
2357 |
||
2358 |
" |
|
2359 |
starting with this context, find the one below |
|
2360 |
(i.e. the one that I have called) and return from it. |
|
2361 |
" |
|
2362 |
%{ |
|
2363 |
OBJ sndr; |
|
2364 |
||
2365 |
theContext = __thisContext; |
|
2366 |
while (theContext != nil) { |
|
2367 |
sndr = __ContextInstPtr(theContext)->c_sender; |
|
2368 |
if (sndr == self) break; |
|
2369 |
theContext = sndr; |
|
2370 |
} |
|
2371 |
if (theContext != nil) { |
|
2372 |
if (__isLazy(theContext)) { |
|
2373 |
__PATCHUPCONTEXT(theContext); |
|
2374 |
} |
|
2375 |
} |
|
2376 |
%}. |
|
2377 |
theContext isNil ifTrue:[ |
|
2378 |
^ false |
|
2379 |
]. |
|
2380 |
^ theContext canReturn |
|
2381 |
! |
|
2382 |
||
1051 | 2383 |
canReturn |
2384 |
"return true, if the receiver allows returning through it. |
|
4557 | 2385 |
Blocks, (currently) always return false. |
2646 | 2386 |
Methods which contain a (non-inlined) block are always |
2387 |
returnable - for other methods, it depends on how the system |
|
2388 |
was compiled (stc flag +/-optContext). |
|
2389 |
If it was compiled with +optContext, methods are compiled |
|
4557 | 2390 |
non returnable, unless a return-pragma was present in the method. |
2646 | 2391 |
Since this saves some administrative work in every method |
2392 |
invocation and makes overall execution faster, the system classes |
|
2393 |
are all compiled with this flag turned on." |
|
1051 | 2394 |
|
2395 |
%{ /* NOCONTEXT */ |
|
2396 |
||
3508 | 2397 |
RETURN ( ((INT)(__INST(flags)) & __MASKSMALLINT(__CANNOT_RETURN)) ? false : true ); |
5441 | 2398 |
%}. |
2399 |
^ true |
|
1051 | 2400 |
! |
2401 |
||
1492 | 2402 |
hasStackToShow |
2646 | 2403 |
"private interface to the debugger. |
2404 |
Smalltalk contexts return false here - other language frames |
|
2405 |
(i.e. Java frames) may want to show the evaluation stack" |
|
2406 |
||
1492 | 2407 |
^ false |
2408 |
||
2409 |
"Created: 28.6.1996 / 14:48:39 / cg" |
|
2646 | 2410 |
"Modified: 13.5.1997 / 16:31:12 / cg" |
1492 | 2411 |
! |
2412 |
||
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2413 |
isHandleContext |
4505 | 2414 |
"return true, if this is a context with exception-handle flag set" |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2415 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2416 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2417 |
RETURN ( ((INT)__INST(flags) & __MASKSMALLINT(__HANDLE_MARK)) ? true : false ); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2418 |
%} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2419 |
! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2420 |
|
1051 | 2421 |
isNonLifo |
2646 | 2422 |
"return true, if this is a nonLifo context. |
2423 |
A nonLifo context is one that is still on the machine stack, |
|
2424 |
but has a reference taken and needs to be converted to a real |
|
2425 |
object (in objectMemory) when the method/block returns. |
|
2426 |
You dont have to understand this - this is a special ST/X |
|
2427 |
debug query, which may be removed without notice." |
|
1051 | 2428 |
|
2429 |
%{ /* NOCONTEXT */ |
|
1133 | 2430 |
RETURN ( ((INT)__INST(flags) & __MASKSMALLINT(__NONLIFO)) ? true : false ); |
1051 | 2431 |
%} |
2432 |
! |
|
2433 |
||
2434 |
isOnMachineStack |
|
12841 | 2435 |
"return true, if this is a machine stack context as opposed to a |
2646 | 2436 |
real heap context. |
2437 |
You dont have to understand this - this is a special ST/X |
|
2438 |
debug query, which may be removed without notice." |
|
1051 | 2439 |
|
2440 |
%{ /* NOCONTEXT */ |
|
2441 |
RETURN ( (__qSpace(self) >= STACKSPACE) ? true : false ); |
|
2442 |
%} |
|
2443 |
! |
|
2444 |
||
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2445 |
isRaiseContext |
4505 | 2446 |
"return true, if this is a context with exception-raise flag set" |
4464
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2447 |
|
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2448 |
%{ /* NOCONTEXT */ |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2449 |
RETURN ( ((INT)__INST(flags) & __MASKSMALLINT(__RAISE_MARK)) ? true : false ); |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2450 |
%} |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2451 |
! |
cec93c942c14
Use context flag for exception handling instead of searching for
Stefan Vogel <sv@exept.de>
parents:
4450
diff
changeset
|
2452 |
|
1051 | 2453 |
isSpecial |
2454 |
"return true, if this is either a nonLifo or interrupted context" |
|
2455 |
||
2456 |
%{ /* NOCONTEXT */ |
|
1133 | 2457 |
RETURN ( ((INT)__INST(flags) & __MASKSMALLINT(__SPECIAL)) ? true : false ); |
1051 | 2458 |
%} |
2459 |
! |
|
2460 |
||
2461 |
isUnwindContext |
|
2462 |
"return true, if this is an unwindContext" |
|
2463 |
||
2464 |
%{ /* NOCONTEXT */ |
|
1133 | 2465 |
RETURN ( ((INT)__INST(flags) & __MASKSMALLINT(__UNWIND_MARK)) ? true : false ); |
1051 | 2466 |
%} |
8578 | 2467 |
! |
2468 |
||
2469 |
tempNames |
|
2470 |
"helper: given a context, return a collection of arg, var and temporary names" |
|
2471 |
||
2472 |
|names nTemps| |
|
2473 |
||
2474 |
names := self argAndVarNames. |
|
2475 |
(nTemps := self numTemps) > 0 ifTrue:[ |
|
2476 |
^ names , ((1 to:nTemps) collect:[:idx | '_tmp' , idx printString]). |
|
2477 |
]. |
|
2478 |
^ names. |
|
1051 | 2479 |
! ! |
2480 |
||
623 | 2481 |
!Context methodsFor:'testing'! |
2482 |
||
2483 |
isBlockContext |
|
2484 |
"return true, iff the receiver is a BlockContext, false otherwise" |
|
2485 |
||
2486 |
^ false |
|
2487 |
! |
|
2488 |
||
14214 | 2489 |
isCheapBlockContext |
2490 |
"return true, iff the receiver is a BlockContext, for a cheap block, false otherwise. |
|
2491 |
Cheap blocks do not refer to their home" |
|
2492 |
||
2493 |
^ false |
|
2494 |
||
2495 |
"Created: / 19-07-2012 / 11:22:38 / cg" |
|
2496 |
! |
|
2497 |
||
623 | 2498 |
isContext |
2499 |
"return true, iff the receiver is a Context, false otherwise" |
|
2500 |
||
2501 |
^ true |
|
2502 |
! |
|
2503 |
||
2504 |
isRecursive |
|
2505 |
"return true, if this context is one of a recursive send of the same |
|
1483 | 2506 |
selector to the same receiver before. |
2507 |
Here, different arguments are ignored - i.e. only the same method |
|
2508 |
counts for recursiveness. |
|
623 | 2509 |
Used to detect recursive errors or recursive printing - for example." |
2510 |
||
2291
af7652b82404
avoid touching contexts (making them nonLifo) when searching for unwind-contexts,
Claus Gittinger <cg@exept.de>
parents:
2285
diff
changeset
|
2511 |
|c count "{Class: SmallInteger }" myMethodsClass| |
af7652b82404
avoid touching contexts (making them nonLifo) when searching for unwind-contexts,
Claus Gittinger <cg@exept.de>
parents:
2285
diff
changeset
|
2512 |
|
af7652b82404
avoid touching contexts (making them nonLifo) when searching for unwind-contexts,
Claus Gittinger <cg@exept.de>
parents:
2285
diff
changeset
|
2513 |
count := 0. |
af7652b82404
avoid touching contexts (making them nonLifo) when searching for unwind-contexts,
Claus Gittinger <cg@exept.de>
parents:
2285
diff
changeset
|
2514 |
|
2893 | 2515 |
c := self findNextContextWithSelector:selector or:nil or:nil. |
623 | 2516 |
[c notNil] whileTrue:[ |
12841 | 2517 |
(c receiver == receiver) ifTrue:[ |
2518 |
" |
|
2519 |
stupid: the current ST/X context does not include |
|
2520 |
the method, but the class, in which the search started ... |
|
2521 |
" |
|
2522 |
myMethodsClass isNil ifTrue:[ |
|
2523 |
myMethodsClass := self methodClass. |
|
2524 |
]. |
|
2525 |
c methodClass == myMethodsClass ifTrue:[ |
|
2526 |
^ true |
|
2527 |
] |
|
2528 |
]. |
|
2529 |
c := c findNextContextWithSelector:selector or:nil or:nil. |
|
2530 |
||
2531 |
" |
|
2532 |
this special test was added to get out after a while |
|
2533 |
if the sender chain is corrupt - this gives us at least |
|
2534 |
a chance to find those errors. |
|
2535 |
" |
|
2536 |
count := count + 1. |
|
2537 |
count >= 100000 ifTrue:[ |
|
2538 |
'Context [warning]: bad context chain' errorPrintCR. |
|
2539 |
^ true |
|
2540 |
] |
|
623 | 2541 |
]. |
2542 |
^ false |
|
1483 | 2543 |
|
2135
6bd144c1c358
newStyle info & error messages
Claus Gittinger <cg@exept.de>
parents:
1853
diff
changeset
|
2544 |
"Modified: 10.1.1997 / 17:34:26 / cg" |
623 | 2545 |
! ! |
2546 |
||
1810 | 2547 |
!Context class methodsFor:'documentation'! |
749 | 2548 |
|
14418
6558e5c3b32e
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14413
diff
changeset
|
2549 |
version |
15688 | 2550 |
^ '$Header: /cvs/stx/stx/libbasic/Context.st,v 1.191 2013-08-23 13:00:45 cg Exp $' |
14418
6558e5c3b32e
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14413
diff
changeset
|
2551 |
! |
6558e5c3b32e
changed: #receiverPrintString
Claus Gittinger <cg@exept.de>
parents:
14413
diff
changeset
|
2552 |
|
13426 | 2553 |
version_CVS |
15688 | 2554 |
^ '$Header: /cvs/stx/stx/libbasic/Context.st,v 1.191 2013-08-23 13:00:45 cg Exp $' |
15644 | 2555 |
! |
2556 |
||
2557 |
version_HG |
|
2558 |
||
2559 |
^ '$Changeset: <not expanded> $' |
|
12573 | 2560 |
! |
2561 |
||
13426 | 2562 |
version_SVN |
15232 | 2563 |
^ '$ Id: Context.st 10643 2011-06-08 21:53:07Z vranyj1 $' |
749 | 2564 |
! ! |
7257 | 2565 |
|
14700 | 2566 |
|
623 | 2567 |
Context initialize! |