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"
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4
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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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 title to or ownership of the software is
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hereby transferred.
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"
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Scanner subclass:#Parser
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instanceVariableNames:'classToCompileFor selfValue
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contextToEvaluateIn
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selector
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methodArgs methodArgNames
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methodVars methodVarNames
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tree
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currentBlock
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3
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usedInstVars usedClassVars usedVars
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0
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modifiedInstVars modifiedClassVars
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localVarDefPosition
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evalExitBlock
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selfNode superNode
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hasPrimitiveCode primitiveNr logged
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warnedUndefVars
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correctedSource'
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10
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classVariableNames:'PrevClass PrevInstVarNames
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PrevClassVarNames PrevClassInstVarNames
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LazyCompilation'
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0
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poolDictionaries:''
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category:'System-Compiler'
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!
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Parser comment:'
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4
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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$Header: /cvs/stx/stx/libcomp/Parser.st,v 1.10 1994-03-30 10:10:24 claus Exp $
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'!
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!Parser class methodsFor:'documentation'!
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documentation
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"
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Parser is used for both parsing and evaluating smalltalk expressions;
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it first builds a parseTree which is then interpreted (evaluate) or
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compiled. Compilation is done in the subclass ByteCodeCompiler and/or
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the (planned) MachineCodeCompiler.
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methods of main interrest are:
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Parser evaluateExpression:...
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and:
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Parser parseExpression:...
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Parser parseMethod:...
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there is protocol to parse complete methods, selector specs, body only etc.
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Parser is also used to find the referenced/modified inst/classvars of
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a method - this is done by sending parseXXX message to a parser and asking
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the parser for referencedXVars or modifiedXVars (see SystemBrowser).
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You can also use parsers for all kinds of other things (ChangesBrowser for
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example analyzes the expressions in the changelist ...) by looking at the
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parsers tree. (Although this is somewhat dangerous, since it exports the
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compilers internals ... better style would be to add specialized query
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methods here.)
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One instance of Parser is created to parse one method or expression - i.e.
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its not suggested to reuse parsers.
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Instance variables:
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classToCompileFor <Class> the class (or nil) we are compiling for
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selfValue <any> value to use as self when interpreting
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contextToEvaluateIn <Context> the context (or nil) when interpreting
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selector <Symbol> the selector of the parsed method
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(valid after parseMethodSpecification)
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methodArgs internal
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methodArgNames <Collection> the names of the arguments
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(valid after parseMethodSpecification)
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methodVars internal
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0
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19
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methodVarNames <Collection> the names of the method locals
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(valid after parseMethodBodyVarSpec)
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tree <ParseTree> the parse tree - valid after parsing
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currentBlock if currently parsing for a block
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usedInstVars set of all accessed instances variables
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(valid after parsing)
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usedClassVars same for classVars
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usedVars all used variables (inst, class & globals)
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modifiedInstVars set of all modified instance variables
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modifiedClassVars same for clasVars
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localVarDefPosition <Integer> the character offset of the local variable
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def. (i.e. the first '|' if any)
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Not yet used - prepared for automatic add of
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undefined variables
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evalExitBlock internal for interpretation
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0
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19
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selfNode <Node> cached one-and-only 'self' node
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superNode <Node> cached one-and-only 'super' node
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hasPrimitiveCode <Boolean> true, if it contains ST/X style primitive code
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primitiveNr <Integer> the parsed ST-80 type primitive number (or nil)
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logged
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warnedUndefVars <Set> set of all variables which the parser has
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already output a warning (to avoid multiple
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warnings about the same variable)
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Class variables:
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PrevClass <Class> class, of which properties are
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cached in:
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PrevInstVarNames <Collection> instance variablenames of cached class
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PrevClassVarNames <Collection> class variablenames of cached class
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PrevClassInstVarNames <Collection> class instance variablenames of cached class
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LazyCompilation <Boolean> EXPERIMENTAL: lazy compilation
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"
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! !
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0
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!Parser class methodsFor:'evaluating expressions'!
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evaluate:aStringOrStream
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"return the result of evaluating an expression in aStringOrStream"
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^ self
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evaluate:aStringOrStream
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in:nil
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receiver:nil
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notifying:nil
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ifFail:nil
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"
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Compiler evaluate:'1 + 2'
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Compiler evaluate:'''hello world'' asSortedCollection displayString printNL'
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Compiler evaluate:'''hello world'' asSortedCollection printNL'
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"
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0
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!
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161 |
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evaluate:aStringOrStream notifying:requestor
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"return the result of evaluating aString,
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errors are reported to requestor"
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^ self
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evaluate:aStringOrStream
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in:nil
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receiver:nil
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notifying:requestor
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ifFail:nil
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0
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!
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evaluate:aString receiver:anObject notifying:requestor
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"return the result of evaluating aString,
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errors are reported to requestor. Allow access to
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anObject as self and to its instVars (used in the inspector)"
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^ self
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evaluate:aString
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in:nil
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receiver:anObject
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notifying:requestor
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ifFail:nil
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0
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!
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evaluate:aStringOrStream in:aContext receiver:anObject
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notifying:requestor
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ifFail:failBlock
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|parser tree mustBackup|
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aStringOrStream isNil ifTrue:[^ nil].
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aStringOrStream isStream ifTrue:[
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parser := self for:aStringOrStream.
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mustBackup := true
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] ifFalse:[
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parser := self for:(ReadStream on:aStringOrStream).
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mustBackup := false
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].
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parser setSelf:anObject.
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parser setContext:aContext.
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parser notifying:requestor.
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parser nextToken.
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tree := parser parseMethodBodyOrNil.
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206 |
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"if reading from a stream, backup for next expression"
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mustBackup ifTrue:[
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parser backupPosition
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].
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211 |
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(parser errorFlag or:[tree == #Error]) ifTrue:[
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failBlock notNil ifTrue:[
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^ failBlock value
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].
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^ #Error
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].
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tree notNil ifTrue:[
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parser evalExitBlock:[:value | ^ value].
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^ tree evaluate
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].
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^ nil
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! !
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!Parser class methodsFor:'instance creation'!
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for:aStream in:aClass
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"return a new parser, reading code for aClass from aStream"
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|parser|
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231 |
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parser := self for:aStream.
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parser setClassToCompileFor:aClass.
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^ parser
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! !
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236 |
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!Parser class methodsFor:'parsing'!
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7
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selectorInExpression:aString
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"parse an expression - return the selector. Used for
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SystemBrowsers implementors/senders query-box initial text"
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242 |
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|tree parser|
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244 |
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(aString isNil or:[aString isEmpty]) ifTrue:[^ nil].
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246 |
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tree := self withSelf:nil parseExpression:aString notifying:nil ignoreErrors:true.
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(tree notNil and:[tree ~~ #Error]) ifTrue:[
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tree isAssignment ifTrue:[
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tree expression isMessage ifTrue:[
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tree := tree expression
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]
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].
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254 |
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9
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tree isMessage ifTrue:[
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7
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^ tree selector
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9
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].
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7
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].
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259 |
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260 |
"mhmh, try expression without receiver"
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261 |
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parser := self for:(ReadStream on:aString).
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parser ignoreErrors.
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parser nextToken.
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^ parser degeneratedKeywordExpressionForSelector
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266 |
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267 |
"
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268 |
Parser selectorInExpression:'foo at:1 put:(5 * bar)'
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Parser selectorInExpression:'(foo at:1) at:1'
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Parser selectorInExpression:'1 + 4'
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Parser selectorInExpression:'1 negated'
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Parser selectorInExpression:'at:1 put:5'
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Parser selectorInExpression:'a := foo at:1 put:5'
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7
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"
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275 |
!
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276 |
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parseExpression:aString
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"parse aString as an expression; return the parseTree, nil or #error"
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0
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279 |
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7
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^ self withSelf:nil parseExpression:aString notifying:nil ignoreErrors:false
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281 |
!
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282 |
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7
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283 |
withSelf:anObject parseExpression:aString notifying:someOne
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284 |
"parse aString as an expression with self set to anObject;
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285 |
return the parseTree, nil or #error"
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7
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286 |
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287 |
^ self withSelf:anObject parseExpression:aString notifying:someOne ignoreErrors:false
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!
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289 |
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290 |
withSelf:anObject parseExpression:aString notifying:someOne ignoreErrors:ignore
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291 |
"parse aString as an expression with self set to anObject;
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292 |
return the parseTree, nil or #error"
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0
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293 |
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294 |
|parser tree|
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295 |
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296 |
aString isNil ifTrue:[^ nil].
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297 |
parser := self for:(ReadStream on:aString).
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parser setSelf:anObject.
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299 |
parser notifying:someOne.
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7
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300 |
ignore ifTrue:[parser ignoreErrors].
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0
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301 |
parser nextToken.
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tree := parser expression.
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303 |
(parser errorFlag or:[tree == #Error]) ifTrue:[^ #Error].
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304 |
^ tree
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305 |
!
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306 |
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307 |
parseMethodSpecification:aString
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308 |
"parse a methods selector & arg specification;
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19
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309 |
return the parser, nil or #error"
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0
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310 |
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311 |
^ self parseMethodSpecification:aString in:nil
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312 |
!
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313 |
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314 |
parseMethodSpecification:aString in:aClass
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315 |
"parse a methods selector & arg spec for a given class;
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19
|
316 |
return the parser, nil or #error"
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0
|
317 |
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318 |
|parser tree|
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319 |
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320 |
aString isNil ifTrue:[^ nil].
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321 |
parser := self for:(ReadStream on:aString) in:aClass.
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322 |
parser nextToken.
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323 |
tree := parser parseMethodSpec.
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324 |
(parser errorFlag or:[tree == #Error]) ifTrue:[^ #Error].
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|
325 |
^ parser
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326 |
!
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327 |
|
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328 |
parseMethodArgAndVarSpecification:aString
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329 |
"parse a methods selector, arg and var spec;
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19
|
330 |
return the parser, nil or #error"
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0
|
331 |
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332 |
^ self parseMethodArgAndVarSpecification:aString in:nil
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|
333 |
!
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334 |
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|
335 |
parseMethodArgAndVarSpecification:aString in:aClass
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336 |
"parse a methods selector, arg and var spec for a given class;
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19
|
337 |
return the parser, nil or #error"
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0
|
338 |
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339 |
|parser|
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340 |
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341 |
aString isNil ifTrue:[^ nil].
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342 |
parser := self for:(ReadStream on:aString) in:aClass.
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343 |
parser nextToken.
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344 |
(parser parseMethodSpec == #Error) ifTrue:[^ nil].
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345 |
(parser parseMethodBodyVarSpec == #Error) ifTrue:[^ nil].
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346 |
parser errorFlag ifTrue:[^ nil].
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|
347 |
^ parser
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|
348 |
!
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349 |
|
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|
350 |
parseMethod:aString
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19
|
351 |
"parse a method; return parser, nil or #error"
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0
|
352 |
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|
353 |
^ self parseMethod:aString in:nil
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|
354 |
!
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355 |
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|
356 |
parseMethod:aString in:aClass
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19
|
357 |
"parse a method for a given class; return , nil or #error"
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0
|
358 |
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359 |
|parser tree|
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360 |
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|
361 |
aString isNil ifTrue:[^ nil].
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|
362 |
parser := self for:(ReadStream on:aString) in:aClass.
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|
363 |
tree := parser parseMethod.
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|
364 |
(parser errorFlag or:[tree == #Error]) ifTrue:[^ nil].
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|
365 |
^ parser
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|
366 |
! !
|
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|
367 |
|
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19
|
368 |
!Parser class methodsFor:'controlling compilation'!
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369 |
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|
370 |
compileLazy:aBoolean
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|
371 |
"turn on/off lazy compilation - return previous setting.
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|
372 |
Actually this flag belongs into the ByteCodeCompiler subclass,
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|
373 |
but it also controls the reporting of some errors here; therefore
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|
374 |
its located here"
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|
375 |
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|
376 |
|oldLazy|
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|
377 |
|
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|
378 |
oldLazy := LazyCompilation.
|
|
|
379 |
LazyCompilation := aBoolean.
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|
|
380 |
^ oldLazy
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|
381 |
|
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|
382 |
"Compiler compileLazy:false"
|
|
|
383 |
! !
|
|
|
384 |
|
|
0
|
385 |
!Parser methodsFor:'ST-80 compatibility'!
|
|
|
386 |
|
|
|
387 |
evaluate:aString in:aClass to:to notifying:aRequestor ifFail:failBlock
|
|
|
388 |
|parseTree|
|
|
|
389 |
|
|
|
390 |
aString isNil ifTrue:[^ nil].
|
|
|
391 |
self initializeFor:(ReadStream on:aString).
|
|
|
392 |
self setClassToCompileFor:aClass.
|
|
|
393 |
selfValue := nil.
|
|
|
394 |
requestor := aRequestor.
|
|
|
395 |
|
|
|
396 |
self nextToken.
|
|
|
397 |
parseTree := self parseMethodBody.
|
|
|
398 |
(errorFlag or:[tree == #Error]) ifTrue:[^ #Error].
|
|
|
399 |
parseTree notNil ifTrue:[
|
|
|
400 |
self evalExitBlock:[:value | ^ failBlock value].
|
|
|
401 |
^ parseTree evaluate
|
|
|
402 |
].
|
|
|
403 |
^ nil
|
|
|
404 |
! !
|
|
|
405 |
|
|
|
406 |
!Parser class methodsFor:'changes'!
|
|
|
407 |
|
|
|
408 |
update:aClass
|
|
|
409 |
"aClass has changed its definition - flush name caches if we have to"
|
|
|
410 |
|
|
10
|
411 |
(aClass == PrevClass) ifTrue:[
|
|
|
412 |
PrevClass := nil.
|
|
|
413 |
PrevInstVarNames := nil.
|
|
|
414 |
PrevClassVarNames := nil.
|
|
|
415 |
PrevClassInstVarNames := nil.
|
|
0
|
416 |
aClass removeDependent:Parser
|
|
|
417 |
]
|
|
7
|
418 |
!
|
|
|
419 |
|
|
|
420 |
flush
|
|
|
421 |
"unconditional flush name caches"
|
|
|
422 |
|
|
10
|
423 |
PrevClass notNil ifTrue:[
|
|
|
424 |
PrevClass removeDependent:Parser
|
|
7
|
425 |
].
|
|
10
|
426 |
PrevClass := nil.
|
|
|
427 |
PrevInstVarNames := nil.
|
|
|
428 |
PrevClassVarNames := nil.
|
|
|
429 |
PrevClassInstVarNames := nil.
|
|
7
|
430 |
|
|
|
431 |
"Parser flush"
|
|
0
|
432 |
! !
|
|
|
433 |
|
|
|
434 |
!Parser methodsFor:'setup'!
|
|
|
435 |
|
|
19
|
436 |
initialize
|
|
|
437 |
super initialize.
|
|
|
438 |
|
|
|
439 |
hasPrimitiveCode := false
|
|
|
440 |
!
|
|
|
441 |
|
|
|
442 |
initializeFor:aStringOrStream
|
|
|
443 |
super initializeFor:aStringOrStream.
|
|
|
444 |
|
|
|
445 |
hasPrimitiveCode := false
|
|
|
446 |
!
|
|
|
447 |
|
|
0
|
448 |
setClassToCompileFor:aClass
|
|
|
449 |
"set the class to be used for parsing/evaluating"
|
|
|
450 |
|
|
|
451 |
classToCompileFor := aClass.
|
|
10
|
452 |
(classToCompileFor ~~ PrevClass) ifTrue:[
|
|
|
453 |
PrevClass notNil ifTrue:[
|
|
|
454 |
Parser update:PrevClass
|
|
0
|
455 |
]
|
|
|
456 |
]
|
|
|
457 |
!
|
|
|
458 |
|
|
|
459 |
setSelf:anObject
|
|
|
460 |
"set the value to be used for self while evaluating"
|
|
|
461 |
|
|
|
462 |
selfValue := anObject.
|
|
|
463 |
classToCompileFor := anObject class.
|
|
10
|
464 |
(classToCompileFor ~~ PrevClass) ifTrue:[
|
|
|
465 |
PrevClass notNil ifTrue:[
|
|
|
466 |
Parser update:PrevClass
|
|
0
|
467 |
]
|
|
|
468 |
]
|
|
|
469 |
!
|
|
|
470 |
|
|
|
471 |
setContext:aContext
|
|
|
472 |
"set the context used while evaluating"
|
|
|
473 |
|
|
|
474 |
contextToEvaluateIn := aContext
|
|
|
475 |
! !
|
|
|
476 |
|
|
|
477 |
!Parser methodsFor:'accessing'!
|
|
|
478 |
|
|
|
479 |
tree
|
|
|
480 |
"return the parsetree"
|
|
|
481 |
|
|
|
482 |
^tree
|
|
|
483 |
!
|
|
|
484 |
|
|
|
485 |
tree:aTree
|
|
19
|
486 |
"private: set the tree - for internal use only"
|
|
|
487 |
|
|
0
|
488 |
tree := aTree
|
|
|
489 |
!
|
|
|
490 |
|
|
|
491 |
selector
|
|
19
|
492 |
"return the selector (valid after parsing spec)"
|
|
0
|
493 |
|
|
|
494 |
^ selector
|
|
|
495 |
!
|
|
|
496 |
|
|
19
|
497 |
correctedSource
|
|
|
498 |
^ correctedSource
|
|
0
|
499 |
!
|
|
|
500 |
|
|
|
501 |
numberOfMethodArgs
|
|
19
|
502 |
"return the number of methodargs (valid after parsing spec)"
|
|
0
|
503 |
|
|
|
504 |
^ methodArgs size
|
|
|
505 |
!
|
|
|
506 |
|
|
|
507 |
methodArgs
|
|
19
|
508 |
"return an array with methodarg names (valid after parsing spec)"
|
|
0
|
509 |
|
|
|
510 |
^ methodArgNames
|
|
|
511 |
!
|
|
|
512 |
|
|
|
513 |
numberOfMethodVars
|
|
19
|
514 |
"return the number of method variables (valid after parsing)"
|
|
0
|
515 |
|
|
|
516 |
^ methodVars size
|
|
|
517 |
!
|
|
|
518 |
|
|
|
519 |
methodVars
|
|
19
|
520 |
"return a collection with method variablenames (valid after parsing)"
|
|
0
|
521 |
|
|
|
522 |
^ methodVarNames
|
|
|
523 |
!
|
|
|
524 |
|
|
3
|
525 |
usedVars
|
|
19
|
526 |
"return a collection with variablenames refd by method (valid after parsing)"
|
|
3
|
527 |
|
|
|
528 |
^ usedVars
|
|
|
529 |
!
|
|
|
530 |
|
|
0
|
531 |
usedInstVars
|
|
19
|
532 |
"return a collection with instvariablenames refd by method (valid after parsing)"
|
|
0
|
533 |
|
|
|
534 |
^ usedInstVars
|
|
|
535 |
!
|
|
|
536 |
|
|
|
537 |
usedClassVars
|
|
19
|
538 |
"return a collection with classvariablenames refd by method (valid after parsing)"
|
|
0
|
539 |
|
|
|
540 |
^ usedClassVars
|
|
|
541 |
!
|
|
|
542 |
|
|
|
543 |
modifiedInstVars
|
|
19
|
544 |
"return a collection with instvariablenames modified by method (valid after parsing)"
|
|
0
|
545 |
|
|
|
546 |
^ modifiedInstVars
|
|
|
547 |
!
|
|
|
548 |
|
|
|
549 |
modifiedClassVars
|
|
19
|
550 |
"return a collection with classvariablenames modified by method (valid after parsing)"
|
|
0
|
551 |
|
|
|
552 |
^ modifiedClassVars
|
|
|
553 |
!
|
|
|
554 |
|
|
19
|
555 |
primitiveNumber
|
|
|
556 |
"return the ST-80 style primitiveNumber or nil (valid after parsing)"
|
|
|
557 |
|
|
|
558 |
^ primitiveNr
|
|
|
559 |
!
|
|
|
560 |
|
|
|
561 |
hasPrimitiveCode
|
|
|
562 |
"return true if there was any ST/X style primitive code (valid after parsing)"
|
|
|
563 |
|
|
|
564 |
^ hasPrimitiveCode
|
|
|
565 |
!
|
|
|
566 |
|
|
0
|
567 |
errorFlag
|
|
19
|
568 |
"return true if there where any errors (valid after parsing)"
|
|
|
569 |
|
|
0
|
570 |
^ errorFlag
|
|
|
571 |
!
|
|
|
572 |
|
|
|
573 |
evalExitBlock:aBlock
|
|
|
574 |
"when evaluating a return expression, this block is evaluated"
|
|
|
575 |
|
|
|
576 |
evalExitBlock := aBlock
|
|
|
577 |
! !
|
|
|
578 |
|
|
|
579 |
!Parser methodsFor:'error handling'!
|
|
|
580 |
|
|
|
581 |
showErrorMessage:aMessage position:pos
|
|
19
|
582 |
"redefined since parser can give more detailed info about
|
|
|
583 |
the class & selector where the error occured."
|
|
|
584 |
|
|
|
585 |
ignoreErrors ifFalse:[
|
|
|
586 |
Smalltalk silentLoading == true ifFalse:[
|
|
|
587 |
Transcript show:(pos printString).
|
|
|
588 |
Transcript show:' '.
|
|
|
589 |
selector notNil ifTrue:[
|
|
|
590 |
Transcript show:aMessage.
|
|
|
591 |
classToCompileFor notNil ifTrue:[
|
|
|
592 |
Transcript showCr:(' in ' , classToCompileFor name , '>>' , selector)
|
|
|
593 |
] ifFalse:[
|
|
|
594 |
Transcript showCr:(' in ' , selector)
|
|
|
595 |
]
|
|
|
596 |
] ifFalse:[
|
|
|
597 |
classToCompileFor notNil ifTrue:[
|
|
|
598 |
Transcript showCr:aMessage , ' (' , classToCompileFor name , ')'
|
|
|
599 |
] ifFalse:[
|
|
|
600 |
Transcript showCr:aMessage
|
|
|
601 |
]
|
|
|
602 |
]
|
|
11
|
603 |
]
|
|
0
|
604 |
]
|
|
|
605 |
!
|
|
|
606 |
|
|
|
607 |
parseError:aMessage position:position to:endPos
|
|
|
608 |
"report a syntax error"
|
|
|
609 |
|
|
|
610 |
|m|
|
|
|
611 |
|
|
|
612 |
errorFlag := true.
|
|
|
613 |
m := ' Error:' , aMessage.
|
|
|
614 |
self notifyError:m position:position to:endPos.
|
|
|
615 |
exitBlock notNil ifTrue:[exitBlock value].
|
|
|
616 |
^ false
|
|
|
617 |
!
|
|
|
618 |
|
|
|
619 |
parseError:aMessage position:position
|
|
|
620 |
"report a syntax error"
|
|
|
621 |
|
|
|
622 |
^ self parseError:aMessage position:position to:nil
|
|
|
623 |
!
|
|
|
624 |
|
|
|
625 |
parseError:aMessage
|
|
|
626 |
"report a syntax error"
|
|
|
627 |
|
|
|
628 |
^ self parseError:aMessage position:tokenPosition to:nil
|
|
|
629 |
!
|
|
|
630 |
|
|
|
631 |
correctableError:message position:pos1 to:pos2
|
|
3
|
632 |
"report an error which can be corrected by compiler -
|
|
|
633 |
return true if correction is wanted"
|
|
0
|
634 |
|
|
|
635 |
|correctIt|
|
|
|
636 |
|
|
|
637 |
requestor isNil ifTrue:[
|
|
|
638 |
self showErrorMessage:message position:pos1.
|
|
|
639 |
correctIt := false
|
|
|
640 |
] ifFalse:[
|
|
|
641 |
correctIt := requestor correctableError:message position:pos1 to:pos2
|
|
|
642 |
].
|
|
|
643 |
correctIt ifFalse:[
|
|
|
644 |
exitBlock notNil ifTrue:[exitBlock value]
|
|
|
645 |
].
|
|
|
646 |
^ correctIt
|
|
|
647 |
!
|
|
|
648 |
|
|
|
649 |
undefError:aName position:pos1 to:pos2
|
|
3
|
650 |
"report an undefined variable error - return true, if it should be
|
|
|
651 |
corrected"
|
|
|
652 |
|
|
|
653 |
requestor isNil ifTrue:[
|
|
7
|
654 |
warnedUndefVars notNil ifTrue:[
|
|
|
655 |
(warnedUndefVars includes:aName) ifTrue:[
|
|
|
656 |
"already warned about this one"
|
|
|
657 |
^ false
|
|
|
658 |
].
|
|
|
659 |
].
|
|
|
660 |
self showErrorMessage:('Error: ' , aName , ' is undefined') position:pos1.
|
|
|
661 |
warnedUndefVars isNil ifTrue:[
|
|
|
662 |
warnedUndefVars := Set new.
|
|
|
663 |
].
|
|
|
664 |
warnedUndefVars add:aName.
|
|
|
665 |
^ false
|
|
3
|
666 |
].
|
|
0
|
667 |
|
|
19
|
668 |
^ self correctableError:('Error: ' , aName , ' is undefined') position:pos1 to:pos2
|
|
0
|
669 |
!
|
|
|
670 |
|
|
|
671 |
exitWith:something
|
|
|
672 |
"this is the longjump out of evaluation via a return expression"
|
|
|
673 |
|
|
|
674 |
evalExitBlock value:something
|
|
|
675 |
! !
|
|
|
676 |
|
|
|
677 |
!Parser methodsFor:'parsing'!
|
|
|
678 |
|
|
|
679 |
parseMethod
|
|
19
|
680 |
"parse a method.
|
|
|
681 |
Return the parseTree or #Error.
|
|
|
682 |
|
|
|
683 |
method ::= methodSpec methodBody
|
|
|
684 |
"
|
|
0
|
685 |
|
|
|
686 |
|parseTree|
|
|
|
687 |
|
|
|
688 |
self nextToken.
|
|
|
689 |
(self parseMethodSpec == #Error) ifTrue:[^ #Error].
|
|
|
690 |
parseTree := self parseMethodBody.
|
|
|
691 |
(parseTree == #Error) ifFalse:[
|
|
|
692 |
self tree:parseTree
|
|
|
693 |
].
|
|
|
694 |
^ parseTree
|
|
|
695 |
!
|
|
|
696 |
|
|
|
697 |
parseMethodSpec
|
|
|
698 |
"parse a methods selector & arg specification;
|
|
19
|
699 |
Set selector and methodArgs in the receiver as a side effect.
|
|
|
700 |
Return the receiver or #Error.
|
|
|
701 |
|
|
|
702 |
methodSpec ::= { KEYWORD IDENTIFIER }
|
|
|
703 |
| binaryOperator IDENTIFIER
|
|
|
704 |
| IDENTIFIER
|
|
|
705 |
"
|
|
0
|
706 |
|
|
|
707 |
|var|
|
|
|
708 |
|
|
|
709 |
(tokenType == #Keyword) ifTrue:[
|
|
|
710 |
selector := ''.
|
|
|
711 |
[tokenType == #Keyword] whileTrue:[
|
|
|
712 |
selector := selector , tokenName.
|
|
|
713 |
self nextToken.
|
|
|
714 |
(tokenType ~~ #Identifier) ifTrue:[^ #Error].
|
|
|
715 |
var := Variable name:tokenName.
|
|
|
716 |
methodArgs isNil ifTrue:[
|
|
|
717 |
methodArgs := Array with:var.
|
|
|
718 |
methodArgNames := Array with:tokenName
|
|
|
719 |
] ifFalse:[
|
|
|
720 |
methodArgs := methodArgs copyWith:var.
|
|
|
721 |
methodArgNames := methodArgNames copyWith:tokenName
|
|
|
722 |
].
|
|
|
723 |
self nextToken
|
|
|
724 |
].
|
|
|
725 |
selector := selector asSymbol.
|
|
|
726 |
^ self
|
|
|
727 |
].
|
|
|
728 |
(tokenType == #Identifier) ifTrue:[
|
|
|
729 |
selector := tokenName asSymbol.
|
|
|
730 |
self nextToken.
|
|
|
731 |
^ self
|
|
|
732 |
].
|
|
|
733 |
(tokenType == #BinaryOperator) ifTrue:[
|
|
|
734 |
selector := tokenName asSymbol.
|
|
|
735 |
self nextToken.
|
|
|
736 |
(tokenType ~~ #Identifier) ifTrue:[^ #Error].
|
|
|
737 |
var := Variable name:tokenName.
|
|
|
738 |
methodArgs isNil ifTrue:[
|
|
|
739 |
methodArgs := Array with:var.
|
|
|
740 |
methodArgNames := Array with:tokenName
|
|
|
741 |
] ifFalse:[
|
|
|
742 |
methodArgs := methodArgs copyWith:var.
|
|
|
743 |
methodArgNames := methodArgNames copyWith:tokenName
|
|
|
744 |
].
|
|
|
745 |
self nextToken.
|
|
|
746 |
^ self
|
|
|
747 |
].
|
|
|
748 |
^ #Error
|
|
|
749 |
!
|
|
|
750 |
|
|
19
|
751 |
parseMethodBody
|
|
|
752 |
"parse a methods body (locals & statements).
|
|
|
753 |
No more tokens may follow.
|
|
|
754 |
Return a node-tree, or #Error
|
|
|
755 |
|
|
|
756 |
methodBody ::= '<' st80Primitive '>' #EOF
|
|
|
757 |
| '<' st80Primitive '>' methodBodyVarSpec statementList #EOF
|
|
|
758 |
|
|
|
759 |
"
|
|
|
760 |
|stats|
|
|
|
761 |
|
|
|
762 |
stats := self parseMethodBodyOrNil.
|
|
|
763 |
(stats == #Error) ifFalse:[
|
|
|
764 |
(tokenType ~~ #EOF) ifTrue:[
|
|
|
765 |
self parseError:(tokenType printString , ' unexpected').
|
|
|
766 |
^#Error
|
|
|
767 |
]
|
|
|
768 |
].
|
|
|
769 |
^ stats
|
|
|
770 |
!
|
|
|
771 |
|
|
0
|
772 |
parseMethodBodyOrNil
|
|
|
773 |
"parse a methods body (locals & statements);
|
|
19
|
774 |
return a node-tree, nil or #Error.
|
|
|
775 |
empty (or comment only) input is accepted and returns nil.
|
|
|
776 |
|
|
|
777 |
methodBodyOrNil ::= '<' st80Primitive '>'
|
|
|
778 |
| '<' st80Primitive '>' methodBodyVarSpec statementList
|
|
|
779 |
| <empty>
|
|
|
780 |
"
|
|
0
|
781 |
|
|
|
782 |
|stats|
|
|
|
783 |
|
|
|
784 |
((tokenType == #BinaryOperator) and:[tokenName = '<']) ifTrue:[
|
|
|
785 |
"an ST-80 primitive - parsed but ignored"
|
|
|
786 |
self nextToken.
|
|
19
|
787 |
primitiveNr := self parseST80Primitive.
|
|
|
788 |
(primitiveNr == #Error) ifTrue:[^ #Error].
|
|
|
789 |
|
|
0
|
790 |
self warning:'ST-80 primitives not supported - ignored'
|
|
|
791 |
].
|
|
|
792 |
|
|
|
793 |
(self parseMethodBodyVarSpec == #Error) ifTrue:[^ #Error].
|
|
|
794 |
|
|
|
795 |
(tokenType ~~ #EOF) ifTrue:[
|
|
|
796 |
stats := self statementList
|
|
|
797 |
].
|
|
|
798 |
^ stats
|
|
|
799 |
!
|
|
|
800 |
|
|
19
|
801 |
parseMethodBodyVarSpec
|
|
|
802 |
"parse a methods local variable specification.
|
|
|
803 |
Leave spec of locals in methodLocals as a side effect.
|
|
|
804 |
Return #Error or nil.
|
|
0
|
805 |
|
|
19
|
806 |
methodBodyVarSpec ::= '|' { IDENTIFIER } '|'
|
|
|
807 |
| <empty>
|
|
|
808 |
"
|
|
0
|
809 |
|
|
|
810 |
|var|
|
|
|
811 |
|
|
|
812 |
(tokenType == $|) ifTrue:[
|
|
|
813 |
"memorize position for declaration in correction"
|
|
|
814 |
localVarDefPosition := tokenPosition.
|
|
|
815 |
self nextToken.
|
|
|
816 |
[tokenType == #Identifier] whileTrue:[
|
|
|
817 |
var := Variable name:tokenName.
|
|
|
818 |
methodVars isNil ifTrue:[
|
|
|
819 |
methodVars := Array with:var.
|
|
|
820 |
methodVarNames := Array with:tokenName
|
|
|
821 |
] ifFalse:[
|
|
|
822 |
methodVars := methodVars copyWith:var.
|
|
|
823 |
methodVarNames := methodVarNames copyWith:tokenName
|
|
|
824 |
].
|
|
|
825 |
self nextToken
|
|
|
826 |
].
|
|
|
827 |
(tokenType ~~ $|) ifTrue:[
|
|
|
828 |
self syntaxError:'error in local var specification; | expected.'.
|
|
|
829 |
^ #Error
|
|
|
830 |
].
|
|
|
831 |
self nextToken
|
|
|
832 |
].
|
|
|
833 |
^ nil
|
|
|
834 |
!
|
|
|
835 |
|
|
7
|
836 |
parseST80Primitive
|
|
|
837 |
"parse an ST-80 type primitive as '< primitive: nr >';
|
|
19
|
838 |
return primitive number or #Error.
|
|
|
839 |
|
|
|
840 |
st80Primitive ::= 'primitive:' INTEGER
|
|
|
841 |
"
|
|
0
|
842 |
|
|
|
843 |
|primNumber|
|
|
|
844 |
|
|
|
845 |
((tokenType == #Keyword) and:[tokenName = 'primitive:']) ifFalse:[
|
|
|
846 |
self parseError:'bad primitive definition (primitive: expected)'.
|
|
|
847 |
^ #Error
|
|
|
848 |
].
|
|
|
849 |
self nextToken.
|
|
|
850 |
(tokenType == #Integer) ifFalse:[
|
|
|
851 |
self parseError:'primitive number expected'.
|
|
|
852 |
^ #Error
|
|
|
853 |
].
|
|
|
854 |
primNumber := tokenValue.
|
|
|
855 |
self nextToken.
|
|
|
856 |
((tokenType == #BinaryOperator) and:[tokenName = '>']) ifFalse:[
|
|
|
857 |
self parseError:'bad primitive definition (> expected)'.
|
|
|
858 |
^ #Error
|
|
|
859 |
].
|
|
|
860 |
self nextToken.
|
|
|
861 |
^ primNumber
|
|
|
862 |
!
|
|
|
863 |
|
|
|
864 |
statementList
|
|
|
865 |
"parse a statementlist; return a node-tree, nil or #Error.
|
|
|
866 |
Statements must be separated by periods."
|
|
|
867 |
|
|
|
868 |
|thisStatement prevStatement firstStatement correctIt periodPos|
|
|
|
869 |
|
|
|
870 |
thisStatement := self statement.
|
|
|
871 |
(thisStatement == #Error) ifTrue:[^ #Error].
|
|
|
872 |
firstStatement := thisStatement.
|
|
|
873 |
[tokenType == $.] whileTrue:[
|
|
|
874 |
periodPos := tokenPosition.
|
|
|
875 |
self nextToken.
|
|
|
876 |
(tokenType == $]) ifTrue:[
|
|
|
877 |
currentBlock isNil ifTrue:[
|
|
|
878 |
self parseError:'block nesting error'.
|
|
|
879 |
errorFlag := true
|
|
|
880 |
"
|
|
|
881 |
*** I had a warning here (since it was not defined
|
|
|
882 |
*** in the blue-book; but PD-code contains a lot of
|
|
|
883 |
*** code with periods at the end so that the warnings
|
|
|
884 |
*** became annoying
|
|
|
885 |
|
|
|
886 |
] ifFalse:[
|
|
|
887 |
self warning:'period after last statement' position:periodPos
|
|
|
888 |
"
|
|
|
889 |
].
|
|
|
890 |
^ firstStatement
|
|
|
891 |
].
|
|
|
892 |
(tokenType == #EOF) ifTrue:[
|
|
|
893 |
currentBlock notNil ifTrue:[
|
|
19
|
894 |
self parseError:'block nesting error (expected '']'')'.
|
|
0
|
895 |
errorFlag := true
|
|
|
896 |
"
|
|
|
897 |
*** I had a warning here (since it was not defined
|
|
|
898 |
*** in the blue-book; but PD-code contains a lot of
|
|
|
899 |
*** code with periods at the end so that the warnings
|
|
|
900 |
*** became annoying
|
|
|
901 |
|
|
|
902 |
] ifFalse:[
|
|
|
903 |
self warning:'period after last statement' position:periodPos
|
|
|
904 |
"
|
|
|
905 |
].
|
|
|
906 |
^ firstStatement
|
|
|
907 |
].
|
|
|
908 |
|
|
|
909 |
prevStatement := thisStatement.
|
|
|
910 |
(prevStatement isKindOf:ReturnNode) ifTrue:[
|
|
|
911 |
self warning:'statements after return' position:tokenPosition
|
|
|
912 |
].
|
|
|
913 |
"
|
|
|
914 |
periodPos := tokenPosition.
|
|
|
915 |
self nextToken.
|
|
|
916 |
"
|
|
|
917 |
|
|
|
918 |
((tokenType == $]) or:[tokenType == #EOF]) ifTrue:[
|
|
|
919 |
(currentBlock isNil and:[tokenType == $]]) ifTrue:[
|
|
|
920 |
self parseError:'block nesting error'.
|
|
|
921 |
errorFlag := true
|
|
|
922 |
] ifFalse:[
|
|
|
923 |
correctIt := self correctableError:'period after last statement in block'
|
|
|
924 |
position:periodPos to:(periodPos + 1).
|
|
|
925 |
correctIt ifTrue:[
|
|
|
926 |
(self correctByDeleting == #Error) ifTrue:[
|
|
|
927 |
errorFlag := true
|
|
|
928 |
]
|
|
|
929 |
]
|
|
|
930 |
].
|
|
|
931 |
^ firstStatement
|
|
|
932 |
].
|
|
|
933 |
thisStatement := self statement.
|
|
|
934 |
(thisStatement == #Error) ifTrue:[^ #Error].
|
|
|
935 |
prevStatement nextStatement:thisStatement
|
|
|
936 |
].
|
|
|
937 |
^ firstStatement
|
|
|
938 |
!
|
|
|
939 |
|
|
|
940 |
statement
|
|
19
|
941 |
"parse a statement; return a node-tree or #Error.
|
|
|
942 |
|
|
|
943 |
statement ::= '^' expression
|
|
|
944 |
| PRIMITIVECODE
|
|
|
945 |
| expression
|
|
|
946 |
"
|
|
0
|
947 |
|
|
|
948 |
|expr node|
|
|
|
949 |
|
|
|
950 |
(tokenType == $^) ifTrue:[
|
|
|
951 |
self nextToken.
|
|
|
952 |
expr := self expression.
|
|
|
953 |
(expr == #Error) ifTrue:[^ #Error].
|
|
|
954 |
node := ReturnNode expression:expr.
|
|
|
955 |
node home:self blockHome:currentBlock.
|
|
|
956 |
^ node
|
|
|
957 |
].
|
|
|
958 |
(tokenType == #Primitive) ifTrue:[
|
|
19
|
959 |
"
|
|
0
|
960 |
self parseError:'cannot compile primitives (yet)'.
|
|
19
|
961 |
"
|
|
0
|
962 |
self nextToken.
|
|
19
|
963 |
hasPrimitiveCode := true.
|
|
0
|
964 |
^ PrimitiveNode code:''
|
|
|
965 |
].
|
|
|
966 |
(tokenType == #EOF) ifTrue:[
|
|
|
967 |
self syntaxError:'period after last statement'.
|
|
|
968 |
^ #Error
|
|
|
969 |
].
|
|
|
970 |
expr := self expression.
|
|
13
|
971 |
(expr == #Error) ifTrue:[^ #Error].
|
|
0
|
972 |
"
|
|
|
973 |
classToCompileFor notNil ifTrue:[
|
|
|
974 |
currentBlock isNil ifTrue:[
|
|
|
975 |
(expr isKindOf:PrimaryNode) ifTrue:[
|
|
|
976 |
self warning:'useless computation - missing ^ ?'
|
|
|
977 |
]
|
|
|
978 |
]
|
|
|
979 |
].
|
|
|
980 |
"
|
|
|
981 |
^ StatementNode expression:expr
|
|
|
982 |
!
|
|
|
983 |
|
|
|
984 |
expression
|
|
19
|
985 |
"parse a cascade-expression; return a node-tree, nil or #Error.
|
|
|
986 |
|
|
|
987 |
expression ::= keywordExpression
|
|
|
988 |
| keywordExpression cascade
|
|
|
989 |
|
|
|
990 |
cascade ::= ';' expressionSendPart
|
|
|
991 |
| cascade ';' expressionSendPart
|
|
|
992 |
|
|
|
993 |
expressionSendPart ::= { KEYWORD binaryExpression }
|
|
|
994 |
| BINARYOPERATOR unaryExpression
|
|
|
995 |
| IDENTIFIER
|
|
|
996 |
"
|
|
0
|
997 |
|
|
|
998 |
|receiver arg sel args pos pos2|
|
|
|
999 |
|
|
3
|
1000 |
pos := tokenPosition.
|
|
0
|
1001 |
receiver := self keywordExpression.
|
|
|
1002 |
(receiver == #Error) ifTrue:[^ #Error].
|
|
15
|
1003 |
(tokenType == $;) ifTrue:[
|
|
|
1004 |
[tokenType == $;] whileTrue:[
|
|
|
1005 |
receiver isMessage ifFalse:[
|
|
|
1006 |
self syntaxError:'left side of cascade must be a message expression'
|
|
|
1007 |
position:pos to:tokenPosition
|
|
|
1008 |
].
|
|
|
1009 |
self nextToken.
|
|
|
1010 |
(tokenType == #Identifier) ifTrue:[
|
|
19
|
1011 |
sel := self selectorCheck:tokenName for:receiver position:tokenPosition to:(tokenPosition + tokenName size - 1).
|
|
15
|
1012 |
receiver := CascadeNode receiver:receiver selector:sel.
|
|
|
1013 |
self nextToken
|
|
0
|
1014 |
] ifFalse:[
|
|
15
|
1015 |
(tokenType == #BinaryOperator) ifTrue:[
|
|
19
|
1016 |
sel := self selectorCheck:tokenName for:receiver position:tokenPosition to:(tokenPosition + tokenName size - 1).
|
|
0
|
1017 |
self nextToken.
|
|
15
|
1018 |
arg := self unaryExpression.
|
|
0
|
1019 |
(arg == #Error) ifTrue:[^ #Error].
|
|
15
|
1020 |
receiver := CascadeNode receiver:receiver selector:sel arg:arg
|
|
|
1021 |
] ifFalse:[
|
|
|
1022 |
(tokenType == #Keyword) ifTrue:[
|
|
|
1023 |
pos := tokenPosition.
|
|
|
1024 |
sel := tokenName.
|
|
0
|
1025 |
self nextToken.
|
|
|
1026 |
arg := self binaryExpression.
|
|
|
1027 |
(arg == #Error) ifTrue:[^ #Error].
|
|
15
|
1028 |
args := Array with:arg.
|
|
|
1029 |
[tokenType == #Keyword] whileTrue:[
|
|
|
1030 |
sel := sel , tokenName.
|
|
|
1031 |
self nextToken.
|
|
|
1032 |
arg := self binaryExpression.
|
|
|
1033 |
(arg == #Error) ifTrue:[^ #Error].
|
|
|
1034 |
args := args copyWith:arg.
|
|
|
1035 |
pos2 := tokenPosition
|
|
|
1036 |
].
|
|
19
|
1037 |
sel := self selectorCheck:sel for:receiver position:pos to:pos2.
|
|
15
|
1038 |
receiver := CascadeNode receiver:receiver selector:sel args:args
|
|
|
1039 |
] ifFalse:[
|
|
|
1040 |
(tokenType == #Error) ifTrue:[^ #Error].
|
|
|
1041 |
self syntaxError:('invalid cascade; ' , tokenType printString , ' unexpected')
|
|
|
1042 |
position:tokenPosition to:source position - 1.
|
|
|
1043 |
^ #Error
|
|
|
1044 |
]
|
|
0
|
1045 |
]
|
|
|
1046 |
]
|
|
15
|
1047 |
].
|
|
|
1048 |
|
|
|
1049 |
"obscure (uspecified ?) if selector follows; Question:
|
|
|
1050 |
|
|
|
1051 |
is
|
|
|
1052 |
'expr sel1; sel2 sel3'
|
|
|
1053 |
|
|
|
1054 |
to be parsed as:
|
|
|
1055 |
(t := expr.
|
|
|
1056 |
t sel1.
|
|
|
1057 |
t sel2) sel3
|
|
|
1058 |
|
|
|
1059 |
or:
|
|
|
1060 |
(t := expr.
|
|
|
1061 |
t sel1.
|
|
|
1062 |
t sel2 sel3)
|
|
|
1063 |
"
|
|
|
1064 |
((tokenType == #Identifier)
|
|
|
1065 |
or:[(tokenType == #BinaryOperator)
|
|
|
1066 |
or:[tokenType == #Keyword]]) ifTrue:[
|
|
|
1067 |
self syntaxError:'ambigous cascade - please group using ( ...)'
|
|
|
1068 |
position:tokenPosition to:source position - 1.
|
|
|
1069 |
^ #Error
|
|
0
|
1070 |
]
|
|
|
1071 |
].
|
|
|
1072 |
^ receiver
|
|
|
1073 |
!
|
|
|
1074 |
|
|
|
1075 |
keywordExpression
|
|
|
1076 |
"parse a keyword-expression; return a node-tree, nil or #Error"
|
|
|
1077 |
|
|
3
|
1078 |
|receiver sel arg args pos1 pos2 try lno note|
|
|
0
|
1079 |
|
|
|
1080 |
receiver := self binaryExpression.
|
|
|
1081 |
(receiver == #Error) ifTrue:[^ #Error].
|
|
|
1082 |
(tokenType == #Keyword) ifTrue:[
|
|
|
1083 |
pos1 := tokenPosition.
|
|
|
1084 |
sel := tokenName.
|
|
|
1085 |
lno := tokenLineNr.
|
|
|
1086 |
self nextToken.
|
|
|
1087 |
arg := self binaryExpression.
|
|
|
1088 |
(arg == #Error) ifTrue:[^ #Error].
|
|
|
1089 |
args := Array with:arg.
|
|
|
1090 |
[tokenType == #Keyword] whileTrue:[
|
|
|
1091 |
sel := sel , tokenName.
|
|
|
1092 |
self nextToken.
|
|
|
1093 |
arg := self binaryExpression.
|
|
|
1094 |
(arg == #Error) ifTrue:[^ #Error].
|
|
|
1095 |
args := args copyWith:arg.
|
|
|
1096 |
pos2 := tokenPosition
|
|
|
1097 |
].
|
|
19
|
1098 |
sel := self selectorCheck:sel for:receiver position:pos1 to:pos2.
|
|
0
|
1099 |
try := MessageNode receiver:receiver selector:sel args:args.
|
|
|
1100 |
(try isMemberOf:String) ifTrue:[
|
|
|
1101 |
self parseError:try position:pos1 to:pos2.
|
|
13
|
1102 |
receiver := MessageNode receiver:receiver selector:sel args:args fold:false
|
|
0
|
1103 |
] ifFalse:[
|
|
|
1104 |
receiver := try
|
|
|
1105 |
].
|
|
3
|
1106 |
note := receiver plausibilityCheck.
|
|
|
1107 |
note notNil ifTrue:[
|
|
|
1108 |
self warning:note position:pos1 to:pos2
|
|
|
1109 |
].
|
|
0
|
1110 |
receiver lineNumber:lno
|
|
|
1111 |
].
|
|
|
1112 |
^ receiver
|
|
|
1113 |
!
|
|
|
1114 |
|
|
7
|
1115 |
degeneratedKeywordExpressionForSelector
|
|
|
1116 |
"parse a keyword-expression without receiver - for the selector
|
|
|
1117 |
only. return the selector or nil"
|
|
|
1118 |
|
|
10
|
1119 |
|sel arg|
|
|
7
|
1120 |
|
|
|
1121 |
(tokenType == #Keyword) ifTrue:[
|
|
|
1122 |
sel := tokenName.
|
|
|
1123 |
self nextToken.
|
|
|
1124 |
arg := self binaryExpression.
|
|
|
1125 |
(arg == #Error) ifTrue:[^ sel].
|
|
|
1126 |
[tokenType == #Keyword] whileTrue:[
|
|
|
1127 |
sel := sel , tokenName.
|
|
|
1128 |
self nextToken.
|
|
|
1129 |
arg := self binaryExpression.
|
|
|
1130 |
(arg == #Error) ifTrue:[^ sel].
|
|
|
1131 |
].
|
|
9
|
1132 |
^ sel
|
|
7
|
1133 |
].
|
|
|
1134 |
^ nil
|
|
|
1135 |
!
|
|
|
1136 |
|
|
0
|
1137 |
binaryExpression
|
|
|
1138 |
"parse a binary-expression; return a node-tree, nil or #Error"
|
|
|
1139 |
|
|
|
1140 |
|receiver arg sel pos try lno note|
|
|
|
1141 |
|
|
|
1142 |
receiver := self unaryExpression.
|
|
|
1143 |
(receiver == #Error) ifTrue:[^ #Error].
|
|
|
1144 |
|
|
|
1145 |
"special kludge: since Scanner cannot know if -digit is a binary
|
|
|
1146 |
expression or a negative constant, handle cases here"
|
|
|
1147 |
|
|
|
1148 |
[(tokenType == #BinaryOperator) or:[(tokenType == $|)
|
|
|
1149 |
or:[(tokenType == #Integer) and:[tokenValue < 0]]]] whileTrue:[
|
|
|
1150 |
pos := tokenPosition.
|
|
|
1151 |
|
|
|
1152 |
lno := tokenLineNr.
|
|
|
1153 |
|
|
|
1154 |
"kludge here: bar and minus are not scanned as binop "
|
|
|
1155 |
(tokenType == $|) ifTrue:[
|
|
|
1156 |
sel := '|'.
|
|
|
1157 |
self nextToken
|
|
|
1158 |
] ifFalse:[
|
|
|
1159 |
(tokenType == #BinaryOperator) ifTrue:[
|
|
19
|
1160 |
sel := self selectorCheck:tokenName for:receiver position:tokenPosition to:(tokenPosition + tokenName size - 1).
|
|
0
|
1161 |
self nextToken
|
|
|
1162 |
] ifFalse:[
|
|
|
1163 |
sel := '-'.
|
|
|
1164 |
tokenValue := tokenValue negated
|
|
|
1165 |
]
|
|
|
1166 |
].
|
|
|
1167 |
arg := self unaryExpression.
|
|
|
1168 |
(arg == #Error) ifTrue:[^ #Error].
|
|
|
1169 |
try := BinaryNode receiver:receiver selector:sel arg:arg.
|
|
|
1170 |
(try isMemberOf:String) ifTrue:[
|
|
|
1171 |
self parseError:try position:pos to:tokenPosition.
|
|
13
|
1172 |
receiver := BinaryNode receiver:receiver selector:sel arg:arg fold:false
|
|
0
|
1173 |
] ifFalse:[
|
|
|
1174 |
receiver := try
|
|
|
1175 |
].
|
|
|
1176 |
note := receiver plausibilityCheck.
|
|
|
1177 |
note notNil ifTrue:[
|
|
|
1178 |
self warning:note position:pos to:tokenPosition
|
|
|
1179 |
].
|
|
|
1180 |
receiver lineNumber:lno
|
|
|
1181 |
].
|
|
|
1182 |
^ receiver
|
|
|
1183 |
!
|
|
|
1184 |
|
|
|
1185 |
unaryExpression
|
|
|
1186 |
"parse a unary-expression; return a node-tree, nil or #Error"
|
|
|
1187 |
|
|
19
|
1188 |
|receiver sel pos pos2 try|
|
|
0
|
1189 |
|
|
|
1190 |
receiver := self primary.
|
|
|
1191 |
(receiver == #Error) ifTrue:[^ #Error].
|
|
|
1192 |
[tokenType == #Identifier] whileTrue:[
|
|
|
1193 |
pos := tokenPosition.
|
|
19
|
1194 |
pos2 := pos + tokenName size - 1.
|
|
|
1195 |
sel := self selectorCheck:tokenName for:receiver position:pos to:pos2.
|
|
0
|
1196 |
try := UnaryNode receiver:receiver selector:sel.
|
|
|
1197 |
(try isMemberOf:String) ifTrue:[
|
|
19
|
1198 |
self warning:try position:pos to:pos2.
|
|
0
|
1199 |
receiver := UnaryNode receiver:receiver selector:sel fold:false
|
|
|
1200 |
] ifFalse:[
|
|
|
1201 |
receiver := try
|
|
|
1202 |
].
|
|
|
1203 |
receiver lineNumber:tokenLineNr.
|
|
|
1204 |
self nextToken.
|
|
|
1205 |
].
|
|
|
1206 |
^ receiver
|
|
|
1207 |
!
|
|
|
1208 |
|
|
|
1209 |
primary
|
|
|
1210 |
"parse a primary-expression; return a node-tree, nil or #Error"
|
|
|
1211 |
|
|
|
1212 |
|val var expr pos name|
|
|
|
1213 |
|
|
|
1214 |
pos := tokenPosition.
|
|
|
1215 |
(tokenType == #Identifier) ifTrue:[
|
|
|
1216 |
var := self variable.
|
|
|
1217 |
(var == #Error) ifTrue:[
|
|
|
1218 |
errorFlag := true
|
|
|
1219 |
].
|
|
|
1220 |
self nextToken.
|
|
|
1221 |
(tokenType == $_) ifFalse:[
|
|
|
1222 |
^ var
|
|
|
1223 |
].
|
|
|
1224 |
(var ~~ #Error) ifTrue:[
|
|
|
1225 |
(var type == #MethodArg) ifTrue:[
|
|
|
1226 |
self parseError:'assignment to method argument' position:pos to:tokenPosition.
|
|
|
1227 |
errorFlag := true
|
|
|
1228 |
].
|
|
|
1229 |
(var type == #BlockArg) ifTrue:[
|
|
|
1230 |
self parseError:'assignment to block argument' position:pos to:tokenPosition.
|
|
|
1231 |
errorFlag := true
|
|
|
1232 |
].
|
|
|
1233 |
|
|
|
1234 |
(var type == #InstanceVariable) ifTrue:[
|
|
|
1235 |
modifiedInstVars isNil ifTrue:[
|
|
|
1236 |
modifiedInstVars := OrderedCollection new
|
|
|
1237 |
].
|
|
10
|
1238 |
name := PrevInstVarNames at:(var index).
|
|
0
|
1239 |
(modifiedInstVars includes:name) ifFalse:[
|
|
|
1240 |
modifiedInstVars add:name
|
|
|
1241 |
]
|
|
|
1242 |
] ifFalse:[
|
|
|
1243 |
(var type == #ClassVariable) ifTrue:[
|
|
|
1244 |
modifiedClassVars isNil ifTrue:[
|
|
|
1245 |
modifiedClassVars := OrderedCollection new
|
|
|
1246 |
].
|
|
|
1247 |
name := var name.
|
|
|
1248 |
name := name copyFrom:((name indexOf:$:) + 1).
|
|
|
1249 |
(modifiedClassVars includes:name) ifFalse:[
|
|
|
1250 |
modifiedClassVars add:name
|
|
|
1251 |
]
|
|
|
1252 |
]
|
|
|
1253 |
]
|
|
|
1254 |
].
|
|
|
1255 |
|
|
|
1256 |
self nextToken.
|
|
|
1257 |
expr := self expression.
|
|
|
1258 |
(errorFlag or:[expr == #Error]) ifTrue:[^ #Error].
|
|
|
1259 |
^ AssignmentNode variable:var expression:expr
|
|
|
1260 |
].
|
|
|
1261 |
((tokenType == #Integer) or:
|
|
|
1262 |
[(tokenType == #Character) or:
|
|
|
1263 |
[tokenType == #Float]]) ifTrue:[
|
|
|
1264 |
val := ConstantNode type:tokenType value:tokenValue.
|
|
|
1265 |
self nextToken.
|
|
|
1266 |
(tokenType == $_) ifTrue:[
|
|
|
1267 |
self parseError:'assignment to a constant' position:pos to:tokenPosition.
|
|
|
1268 |
^ #Error
|
|
|
1269 |
].
|
|
|
1270 |
^ val
|
|
|
1271 |
].
|
|
3
|
1272 |
(tokenType == #Self) ifTrue:[
|
|
|
1273 |
self nextToken.
|
|
|
1274 |
(tokenType == $_) ifTrue:[
|
|
|
1275 |
self parseError:'assignment to self' position:pos to:tokenPosition.
|
|
|
1276 |
^ #Error
|
|
|
1277 |
].
|
|
|
1278 |
selfNode isNil ifTrue:[
|
|
13
|
1279 |
selfNode := SelfNode value:selfValue
|
|
3
|
1280 |
].
|
|
|
1281 |
^ selfNode
|
|
|
1282 |
].
|
|
0
|
1283 |
(tokenType == #String) ifTrue:[
|
|
|
1284 |
val := ConstantNode type:tokenType value:tokenValue.
|
|
|
1285 |
self nextToken.
|
|
|
1286 |
(tokenType == $_) ifTrue:[
|
|
|
1287 |
self parseError:'assignment to a constant' position:pos to:tokenPosition.
|
|
|
1288 |
^ #Error
|
|
|
1289 |
].
|
|
|
1290 |
^ val
|
|
|
1291 |
].
|
|
|
1292 |
(tokenType == #Symbol) ifTrue:[
|
|
|
1293 |
val := ConstantNode type:tokenType value:tokenValue.
|
|
|
1294 |
self nextToken.
|
|
|
1295 |
(tokenType == $_) ifTrue:[
|
|
|
1296 |
self parseError:'assignment to a constant' position:pos to:tokenPosition.
|
|
|
1297 |
^ #Error
|
|
|
1298 |
].
|
|
|
1299 |
^ val
|
|
|
1300 |
].
|
|
|
1301 |
(tokenType == #Nil) ifTrue:[
|
|
|
1302 |
self nextToken.
|
|
|
1303 |
(tokenType == $_) ifTrue:[
|
|
|
1304 |
self parseError:'assignment to nil' position:pos to:tokenPosition.
|
|
|
1305 |
^ #Error
|
|
|
1306 |
].
|
|
|
1307 |
^ ConstantNode type:#Nil value:nil
|
|
|
1308 |
].
|
|
|
1309 |
(tokenType == #True) ifTrue:[
|
|
|
1310 |
self nextToken.
|
|
|
1311 |
(tokenType == $_) ifTrue:[
|
|
|
1312 |
self parseError:'assignment to true' position:pos to:tokenPosition.
|
|
|
1313 |
^ #Error
|
|
|
1314 |
].
|
|
|
1315 |
^ ConstantNode type:#True value:true
|
|
|
1316 |
].
|
|
|
1317 |
(tokenType == #False) ifTrue:[
|
|
|
1318 |
self nextToken.
|
|
|
1319 |
(tokenType == $_) ifTrue:[
|
|
|
1320 |
self parseError:'assignment to false' position:pos to:tokenPosition.
|
|
|
1321 |
^ #Error
|
|
|
1322 |
].
|
|
|
1323 |
^ ConstantNode type:#False value:false
|
|
|
1324 |
].
|
|
|
1325 |
(tokenType == #Super) ifTrue:[
|
|
|
1326 |
self nextToken.
|
|
|
1327 |
(tokenType == $_) ifTrue:[
|
|
|
1328 |
self parseError:'assignment to super' position:pos to:tokenPosition.
|
|
|
1329 |
^ #Error
|
|
|
1330 |
].
|
|
|
1331 |
superNode isNil ifTrue:[
|
|
13
|
1332 |
superNode := SuperNode value:selfValue inClass:classToCompileFor
|
|
0
|
1333 |
].
|
|
|
1334 |
^ superNode
|
|
|
1335 |
].
|
|
|
1336 |
(tokenType == #ThisContext) ifTrue:[
|
|
|
1337 |
self nextToken.
|
|
|
1338 |
(tokenType == $_) ifTrue:[
|
|
|
1339 |
self parseError:'assignment to thisContext' position:pos to:tokenPosition.
|
|
|
1340 |
^ #Error
|
|
|
1341 |
].
|
|
13
|
1342 |
^ VariableNode type:#ThisContext
|
|
0
|
1343 |
].
|
|
|
1344 |
(tokenType == #HashLeftParen) ifTrue:[
|
|
|
1345 |
self nextToken.
|
|
|
1346 |
val := self array.
|
|
|
1347 |
self nextToken.
|
|
|
1348 |
^ ConstantNode type:#Array value:val
|
|
|
1349 |
].
|
|
|
1350 |
(tokenType == #HashLeftBrack) ifTrue:[
|
|
|
1351 |
self nextToken.
|
|
|
1352 |
val := self byteArray.
|
|
|
1353 |
self nextToken.
|
|
|
1354 |
^ ConstantNode type:#Array value:val
|
|
|
1355 |
].
|
|
|
1356 |
(tokenType == $() ifTrue:[
|
|
|
1357 |
self nextToken.
|
|
|
1358 |
val := self expression.
|
|
|
1359 |
(val == #Error) ifTrue:[^ #Error].
|
|
|
1360 |
(tokenType ~~ $) ) ifTrue:[
|
|
|
1361 |
(tokenType isMemberOf:Character) ifTrue:[
|
|
|
1362 |
self syntaxError:'missing '')'' (i.e. ''' , tokenType asString , ''' unexpected)' withCRs position:pos to:tokenPosition.
|
|
|
1363 |
] ifFalse:[
|
|
|
1364 |
self syntaxError:'missing '')''' position:pos to:tokenPosition.
|
|
|
1365 |
].
|
|
|
1366 |
^ #Error
|
|
|
1367 |
].
|
|
|
1368 |
self nextToken.
|
|
19
|
1369 |
val parenthized:true.
|
|
0
|
1370 |
^ val
|
|
|
1371 |
].
|
|
|
1372 |
(tokenType == $[ ) ifTrue:[
|
|
|
1373 |
val := self block.
|
|
|
1374 |
self nextToken.
|
|
|
1375 |
^ val
|
|
|
1376 |
].
|
|
19
|
1377 |
|
|
0
|
1378 |
(tokenType == #Error) ifTrue:[^ #Error].
|
|
|
1379 |
(tokenType isKindOf:Character) ifTrue:[
|
|
|
1380 |
self syntaxError:('error in primary; '
|
|
19
|
1381 |
, tokenType printString ,
|
|
0
|
1382 |
' unexpected') position:tokenPosition to:tokenPosition
|
|
|
1383 |
] ifFalse:[
|
|
19
|
1384 |
(#(BinaryOperator Keyword) includes:tokenType) ifTrue:[
|
|
|
1385 |
self syntaxError:('error in primary; '
|
|
|
1386 |
, tokenType printString , '(' , tokenName , ') ' ,
|
|
|
1387 |
' unexpected')
|
|
|
1388 |
] ifFalse:[
|
|
|
1389 |
self syntaxError:('error in primary; '
|
|
|
1390 |
, tokenType printString ,
|
|
|
1391 |
' unexpected')
|
|
|
1392 |
]
|
|
0
|
1393 |
].
|
|
|
1394 |
^ #Error
|
|
|
1395 |
!
|
|
|
1396 |
|
|
|
1397 |
variableOrError
|
|
|
1398 |
"parse a variable; return a node-tree, nil or #Error"
|
|
|
1399 |
|
|
19
|
1400 |
|var instIndex aClass searchBlock args vars
|
|
|
1401 |
varName tokenSymbol className|
|
|
0
|
1402 |
|
|
|
1403 |
varName := tokenName.
|
|
|
1404 |
|
|
|
1405 |
"is it a block-arg or block-var ?"
|
|
|
1406 |
searchBlock := currentBlock.
|
|
|
1407 |
[searchBlock notNil] whileTrue:[
|
|
|
1408 |
args := searchBlock arguments.
|
|
|
1409 |
args notNil ifTrue:[
|
|
19
|
1410 |
instIndex := args findFirst:[:aBlockArg | aBlockArg name = varName].
|
|
|
1411 |
instIndex ~~ 0 ifTrue:[
|
|
13
|
1412 |
^ VariableNode type:#BlockArg
|
|
|
1413 |
name:varName
|
|
19
|
1414 |
token:(args at:instIndex)
|
|
13
|
1415 |
index:instIndex
|
|
19
|
1416 |
block:searchBlock
|
|
|
1417 |
].
|
|
|
1418 |
|
|
0
|
1419 |
].
|
|
|
1420 |
|
|
|
1421 |
vars := searchBlock variables.
|
|
|
1422 |
vars notNil ifTrue:[
|
|
19
|
1423 |
instIndex := vars findFirst:[:aBlockVar | aBlockVar name = varName].
|
|
|
1424 |
instIndex ~~ 0 ifTrue:[
|
|
13
|
1425 |
^ VariableNode type:#BlockVariable
|
|
|
1426 |
name:varName
|
|
19
|
1427 |
token:(vars at:instIndex)
|
|
13
|
1428 |
index:instIndex
|
|
19
|
1429 |
block:searchBlock
|
|
|
1430 |
].
|
|
0
|
1431 |
].
|
|
|
1432 |
searchBlock := searchBlock home
|
|
|
1433 |
].
|
|
|
1434 |
|
|
|
1435 |
"is it a method-variable ?"
|
|
|
1436 |
methodVars notNil ifTrue:[
|
|
|
1437 |
instIndex := methodVarNames indexOf:varName.
|
|
7
|
1438 |
instIndex ~~ 0 ifTrue:[
|
|
0
|
1439 |
var := methodVars at:instIndex.
|
|
|
1440 |
var used:true.
|
|
13
|
1441 |
^ VariableNode type:#MethodVariable
|
|
|
1442 |
name:varName
|
|
|
1443 |
token:var
|
|
|
1444 |
index:instIndex
|
|
0
|
1445 |
]
|
|
|
1446 |
].
|
|
|
1447 |
|
|
|
1448 |
"is it a method-argument ?"
|
|
|
1449 |
methodArgs notNil ifTrue:[
|
|
|
1450 |
instIndex := methodArgNames indexOf:varName.
|
|
7
|
1451 |
instIndex ~~ 0 ifTrue:[
|
|
13
|
1452 |
^ VariableNode type:#MethodArg
|
|
|
1453 |
name:varName
|
|
|
1454 |
token:(methodArgs at:instIndex)
|
|
|
1455 |
index:instIndex
|
|
0
|
1456 |
]
|
|
|
1457 |
].
|
|
|
1458 |
|
|
|
1459 |
"is it an instance-variable ?"
|
|
|
1460 |
classToCompileFor notNil ifTrue:[
|
|
|
1461 |
"caching allInstVarNames for next compilation saves time ..."
|
|
|
1462 |
|
|
10
|
1463 |
(PrevInstVarNames isNil or:[PrevClass ~~ classToCompileFor]) ifTrue:[
|
|
|
1464 |
PrevClass notNil ifTrue:[
|
|
|
1465 |
PrevClass removeDependent:Parser
|
|
0
|
1466 |
].
|
|
10
|
1467 |
PrevClass := classToCompileFor.
|
|
|
1468 |
PrevInstVarNames := classToCompileFor allInstVarNames.
|
|
|
1469 |
PrevClassInstVarNames := nil.
|
|
|
1470 |
PrevClassVarNames := nil.
|
|
|
1471 |
PrevClass addDependent:Parser
|
|
0
|
1472 |
].
|
|
|
1473 |
|
|
10
|
1474 |
instIndex := PrevInstVarNames indexOf:varName startingAt:1.
|
|
7
|
1475 |
instIndex ~~ 0 ifTrue:[
|
|
0
|
1476 |
usedInstVars isNil ifTrue:[
|
|
19
|
1477 |
usedInstVars := OrderedCollection with:varName
|
|
|
1478 |
] ifFalse:[
|
|
|
1479 |
(usedInstVars includes:varName) ifFalse:[
|
|
|
1480 |
usedInstVars add:varName
|
|
|
1481 |
]
|
|
0
|
1482 |
].
|
|
3
|
1483 |
usedVars isNil ifTrue:[
|
|
19
|
1484 |
usedVars := OrderedCollection with:varName
|
|
|
1485 |
] ifFalse:[
|
|
|
1486 |
(usedVars includes:varName) ifFalse:[
|
|
|
1487 |
usedVars add:varName
|
|
|
1488 |
]
|
|
3
|
1489 |
].
|
|
13
|
1490 |
^ VariableNode type:#InstanceVariable
|
|
|
1491 |
name:varName
|
|
|
1492 |
index:instIndex
|
|
|
1493 |
selfValue:selfValue
|
|
0
|
1494 |
]
|
|
|
1495 |
].
|
|
|
1496 |
|
|
|
1497 |
"is it a class-instance-variable ?"
|
|
|
1498 |
classToCompileFor notNil ifTrue:[
|
|
10
|
1499 |
PrevClassInstVarNames isNil ifTrue:[
|
|
|
1500 |
PrevClassInstVarNames := classToCompileFor class allInstVarNames
|
|
0
|
1501 |
].
|
|
|
1502 |
|
|
10
|
1503 |
instIndex := PrevClassInstVarNames indexOf:varName startingAt:1.
|
|
7
|
1504 |
instIndex ~~ 0 ifTrue:[
|
|
0
|
1505 |
aClass := self inWhichClassIsClassInstVar:varName.
|
|
|
1506 |
aClass notNil ifTrue:[
|
|
3
|
1507 |
usedVars isNil ifTrue:[
|
|
19
|
1508 |
usedVars := OrderedCollection with:varName
|
|
|
1509 |
] ifFalse:[
|
|
|
1510 |
(usedVars includes:varName) ifFalse:[
|
|
|
1511 |
usedVars add:varName
|
|
|
1512 |
]
|
|
3
|
1513 |
].
|
|
13
|
1514 |
^ VariableNode type:#ClassInstanceVariable
|
|
|
1515 |
name:varName
|
|
|
1516 |
index:instIndex
|
|
|
1517 |
selfClass:aClass
|
|
0
|
1518 |
]
|
|
|
1519 |
]
|
|
|
1520 |
].
|
|
|
1521 |
|
|
|
1522 |
"is it a class-variable ?"
|
|
|
1523 |
classToCompileFor notNil ifTrue:[
|
|
10
|
1524 |
PrevClassVarNames isNil ifTrue:[
|
|
0
|
1525 |
aClass := classToCompileFor.
|
|
|
1526 |
classToCompileFor isMeta ifTrue:[
|
|
|
1527 |
className := aClass name.
|
|
15
|
1528 |
className := className copyTo:(className size - 5).
|
|
0
|
1529 |
aClass := Smalltalk at:(className asSymbol).
|
|
|
1530 |
aClass isNil ifTrue:[
|
|
|
1531 |
aClass := classToCompileFor
|
|
|
1532 |
]
|
|
|
1533 |
].
|
|
10
|
1534 |
PrevClassVarNames := aClass allClassVarNames
|
|
0
|
1535 |
].
|
|
|
1536 |
|
|
10
|
1537 |
instIndex := PrevClassVarNames indexOf:varName startingAt:1.
|
|
7
|
1538 |
instIndex ~~ 0 ifTrue:[
|
|
0
|
1539 |
aClass := self inWhichClassIsClassVar:varName.
|
|
|
1540 |
aClass notNil ifTrue:[
|
|
|
1541 |
usedClassVars isNil ifTrue:[
|
|
19
|
1542 |
usedClassVars := OrderedCollection with:varName
|
|
|
1543 |
] ifFalse:[
|
|
|
1544 |
(usedClassVars includes:varName) ifFalse:[
|
|
|
1545 |
usedClassVars add:varName
|
|
|
1546 |
].
|
|
0
|
1547 |
].
|
|
3
|
1548 |
usedVars isNil ifTrue:[
|
|
19
|
1549 |
usedVars := OrderedCollection with:varName
|
|
|
1550 |
] ifFalse:[
|
|
|
1551 |
(usedVars includes:varName) ifFalse:[
|
|
|
1552 |
usedVars add:varName
|
|
|
1553 |
].
|
|
3
|
1554 |
].
|
|
13
|
1555 |
^ VariableNode type:#ClassVariable
|
|
|
1556 |
name:(aClass name , ':' , varName) asSymbol
|
|
0
|
1557 |
]
|
|
|
1558 |
]
|
|
|
1559 |
].
|
|
|
1560 |
|
|
|
1561 |
"is it a global-variable ?"
|
|
|
1562 |
tokenSymbol := varName asSymbol.
|
|
|
1563 |
(Smalltalk includesKey:tokenSymbol) ifTrue:[
|
|
3
|
1564 |
usedVars isNil ifTrue:[
|
|
19
|
1565 |
usedVars := OrderedCollection with:varName
|
|
|
1566 |
] ifFalse:[
|
|
|
1567 |
(usedVars includes:varName) ifFalse:[
|
|
|
1568 |
usedVars add:varName
|
|
|
1569 |
]
|
|
3
|
1570 |
].
|
|
13
|
1571 |
^ VariableNode type:#GlobalVariable name:tokenSymbol
|
|
0
|
1572 |
].
|
|
|
1573 |
^ #Error
|
|
|
1574 |
!
|
|
|
1575 |
|
|
|
1576 |
variable
|
|
|
1577 |
"parse a variable; if undefined, notify error and correct if user wants to"
|
|
|
1578 |
|
|
|
1579 |
|v|
|
|
|
1580 |
|
|
|
1581 |
v := self variableOrError.
|
|
|
1582 |
(v == #Error) ifFalse:[^ v].
|
|
|
1583 |
v := self correctVariable.
|
|
|
1584 |
(v == #Error) ifFalse:[^ v].
|
|
13
|
1585 |
^ VariableNode type:#GlobalVariable name:tokenName asSymbol
|
|
0
|
1586 |
!
|
|
|
1587 |
|
|
|
1588 |
inWhichClassIsClassVar:aString
|
|
|
1589 |
"search class-chain for the classvariable named aString
|
|
|
1590 |
- return the class or nil if not found"
|
|
|
1591 |
|
|
|
1592 |
|aClass className baseClass|
|
|
|
1593 |
|
|
|
1594 |
aClass := classToCompileFor.
|
|
|
1595 |
aClass isMeta ifTrue:[
|
|
|
1596 |
className := aClass name.
|
|
15
|
1597 |
className := className copyTo:(className size - 5).
|
|
0
|
1598 |
baseClass := Smalltalk at:(className asSymbol).
|
|
|
1599 |
baseClass notNil ifTrue:[
|
|
|
1600 |
aClass := baseClass
|
|
|
1601 |
]
|
|
|
1602 |
].
|
|
|
1603 |
[aClass notNil] whileTrue:[
|
|
|
1604 |
(aClass classVarNames includes:aString) ifTrue:[ ^ aClass].
|
|
|
1605 |
aClass := aClass superclass
|
|
|
1606 |
].
|
|
|
1607 |
^ nil
|
|
|
1608 |
!
|
|
|
1609 |
|
|
|
1610 |
inWhichClassIsClassInstVar:aString
|
|
|
1611 |
"search class-chain for the class-instance variable named aString
|
|
|
1612 |
- return the class or nil if not found"
|
|
|
1613 |
|
|
|
1614 |
|aClass|
|
|
|
1615 |
|
|
|
1616 |
aClass := classToCompileFor.
|
|
|
1617 |
[aClass notNil] whileTrue:[
|
|
|
1618 |
(aClass class instVarNames includes:aString) ifTrue:[ ^ aClass].
|
|
|
1619 |
aClass := aClass superclass
|
|
|
1620 |
].
|
|
|
1621 |
^ nil
|
|
|
1622 |
!
|
|
|
1623 |
|
|
|
1624 |
block
|
|
|
1625 |
"parse a block; return a node-tree, nil or #Error"
|
|
|
1626 |
|
|
7
|
1627 |
|stats node args var vars pos lno b|
|
|
0
|
1628 |
|
|
7
|
1629 |
lno := tokenLineNr.
|
|
0
|
1630 |
self nextToken.
|
|
|
1631 |
(tokenType == $: ) ifTrue:[
|
|
|
1632 |
[tokenType == $:] whileTrue:[
|
|
|
1633 |
pos := tokenPosition.
|
|
|
1634 |
self nextToken.
|
|
|
1635 |
(tokenType == #Identifier) ifFalse:[
|
|
|
1636 |
self syntaxError:'Identifier expected in block-arg declaration'
|
|
|
1637 |
position:pos to:tokenPosition-1.
|
|
|
1638 |
^ #Error
|
|
|
1639 |
].
|
|
|
1640 |
var := Variable name:tokenName.
|
|
|
1641 |
args isNil ifTrue:[
|
|
|
1642 |
args := Array with:var
|
|
|
1643 |
] ifFalse:[
|
|
|
1644 |
args := args copyWith:var
|
|
|
1645 |
].
|
|
|
1646 |
self nextToken
|
|
|
1647 |
].
|
|
|
1648 |
(tokenType ~~ $| ) ifTrue:[
|
|
|
1649 |
"ST-80 allows [:arg ]"
|
|
|
1650 |
(tokenType == $] ) ifTrue:[
|
|
7
|
1651 |
b := BlockNode arguments:args home:currentBlock variables:nil.
|
|
|
1652 |
b lineNumber:lno.
|
|
|
1653 |
^ b
|
|
0
|
1654 |
].
|
|
|
1655 |
self syntaxError:'| expected after block-arg declaration'.
|
|
|
1656 |
^ #Error
|
|
|
1657 |
].
|
|
|
1658 |
self nextToken
|
|
|
1659 |
].
|
|
|
1660 |
(tokenType == $| ) ifTrue:[
|
|
|
1661 |
self nextToken.
|
|
|
1662 |
pos := tokenPosition.
|
|
|
1663 |
[tokenType == $|] whileFalse:[
|
|
|
1664 |
(tokenType == #Identifier) ifFalse:[
|
|
|
1665 |
self syntaxError:'Identifier expected in block-var declaration' position:pos.
|
|
|
1666 |
^ #Error
|
|
|
1667 |
].
|
|
|
1668 |
var := Variable name:tokenName.
|
|
|
1669 |
vars isNil ifTrue:[
|
|
|
1670 |
vars := Array with:var
|
|
|
1671 |
] ifFalse:[
|
|
|
1672 |
vars := vars copyWith:var
|
|
|
1673 |
].
|
|
|
1674 |
self nextToken
|
|
|
1675 |
].
|
|
|
1676 |
self nextToken
|
|
|
1677 |
].
|
|
3
|
1678 |
node := BlockNode arguments:args home:currentBlock variables:vars.
|
|
7
|
1679 |
node lineNumber:lno.
|
|
0
|
1680 |
currentBlock := node.
|
|
|
1681 |
stats := self blockStatementList.
|
|
|
1682 |
node statements:stats.
|
|
|
1683 |
currentBlock := node home.
|
|
|
1684 |
(stats == #Error) ifTrue:[^ #Error].
|
|
|
1685 |
^ node
|
|
|
1686 |
!
|
|
|
1687 |
|
|
|
1688 |
blockStatementList
|
|
|
1689 |
"parse a blocks statementlist; return a node-tree, nil or #Error"
|
|
|
1690 |
|
|
|
1691 |
|thisStatement prevStatement firstStatement|
|
|
|
1692 |
|
|
|
1693 |
(tokenType == $] ) ifTrue:[^ nil].
|
|
|
1694 |
thisStatement := self statement.
|
|
|
1695 |
(thisStatement == #Error) ifTrue:[^ #Error].
|
|
|
1696 |
firstStatement := thisStatement.
|
|
|
1697 |
[tokenType == $] ] whileFalse:[
|
|
|
1698 |
(tokenType == $.) ifFalse:[
|
|
|
1699 |
(tokenType == #EOF) ifTrue:[
|
|
|
1700 |
self syntaxError:'missing '']'' in block'
|
|
|
1701 |
] ifFalse:[
|
|
|
1702 |
self syntaxError:'missing ''.'' in block'
|
|
|
1703 |
].
|
|
|
1704 |
^ #Error
|
|
|
1705 |
] ifTrue:[
|
|
|
1706 |
prevStatement := thisStatement.
|
|
|
1707 |
self nextToken.
|
|
|
1708 |
tokenType == $] ifTrue:[
|
|
|
1709 |
"
|
|
|
1710 |
*** I had a warning here (since it was not defined
|
|
|
1711 |
*** in the blue-book; but PD-code contains a lot of
|
|
|
1712 |
*** code with periods at the end so that the warnings
|
|
|
1713 |
*** became annoying
|
|
|
1714 |
|
|
|
1715 |
self warning:'period after last statement in block'.
|
|
|
1716 |
"
|
|
|
1717 |
^ firstStatement
|
|
|
1718 |
].
|
|
|
1719 |
thisStatement := self statement.
|
|
|
1720 |
(thisStatement == #Error) ifTrue:[^ #Error].
|
|
|
1721 |
prevStatement nextStatement:thisStatement
|
|
|
1722 |
]
|
|
|
1723 |
].
|
|
|
1724 |
^ firstStatement
|
|
|
1725 |
!
|
|
|
1726 |
|
|
|
1727 |
array
|
|
7
|
1728 |
|arr elem pos1|
|
|
0
|
1729 |
|
|
|
1730 |
pos1 := tokenPosition.
|
|
|
1731 |
arr := OrderedCollection new:200.
|
|
|
1732 |
[tokenType ~~ $) ] whileTrue:[
|
|
|
1733 |
elem := self arrayConstant.
|
|
|
1734 |
(elem == #Error) ifTrue:[
|
|
|
1735 |
(tokenType == #EOF) ifTrue:[
|
|
|
1736 |
self syntaxError:'unterminated array-constant; '')'' expected'
|
|
|
1737 |
position:pos1 to:tokenPosition
|
|
|
1738 |
].
|
|
|
1739 |
^ #Error
|
|
|
1740 |
].
|
|
|
1741 |
arr add:elem.
|
|
|
1742 |
self nextToken
|
|
|
1743 |
].
|
|
|
1744 |
^ Array withAll:arr
|
|
|
1745 |
!
|
|
|
1746 |
|
|
|
1747 |
byteArray
|
|
7
|
1748 |
"started with ST-80 R4 - allow byteArray constants as #[ ... ]"
|
|
|
1749 |
|
|
0
|
1750 |
|arr elem pos1 pos2|
|
|
|
1751 |
|
|
|
1752 |
pos1 := tokenPosition.
|
|
|
1753 |
arr := OrderedCollection new.
|
|
|
1754 |
[tokenType ~~ $] ] whileTrue:[
|
|
|
1755 |
pos2 := tokenPosition.
|
|
|
1756 |
elem := self arrayConstant.
|
|
|
1757 |
(elem == #Error) ifTrue:[
|
|
|
1758 |
(tokenType == #EOF) ifTrue:[
|
|
|
1759 |
self syntaxError:'unterminated bytearray-constant; '']'' expected'
|
|
|
1760 |
position:pos1 to:tokenPosition
|
|
|
1761 |
].
|
|
|
1762 |
^ #Error
|
|
|
1763 |
].
|
|
|
1764 |
((elem isMemberOf:SmallInteger) and:
|
|
|
1765 |
[(elem >= 0) and:[elem <= 255]]) ifTrue:[
|
|
|
1766 |
arr add:elem
|
|
|
1767 |
] ifFalse:[
|
|
|
1768 |
self parseError:'invalid ByteArray element' position:pos2 to:tokenPosition - 1
|
|
|
1769 |
].
|
|
|
1770 |
self nextToken
|
|
|
1771 |
].
|
|
|
1772 |
^ ByteArray withAll:arr
|
|
|
1773 |
!
|
|
|
1774 |
|
|
|
1775 |
arrayConstant
|
|
|
1776 |
(tokenType == #String) ifTrue:[
|
|
|
1777 |
^ tokenValue
|
|
|
1778 |
].
|
|
|
1779 |
(tokenType == #Nil) ifTrue:[
|
|
|
1780 |
^ nil
|
|
|
1781 |
].
|
|
|
1782 |
(tokenType == #Integer) ifTrue:[
|
|
|
1783 |
^ tokenValue
|
|
|
1784 |
].
|
|
|
1785 |
(tokenType == #Character) ifTrue:[
|
|
|
1786 |
^ tokenValue
|
|
|
1787 |
].
|
|
|
1788 |
(tokenType == #Float) ifTrue:[
|
|
|
1789 |
^ tokenValue
|
|
|
1790 |
].
|
|
|
1791 |
(tokenType == #True) ifTrue:[
|
|
|
1792 |
^ true
|
|
|
1793 |
].
|
|
|
1794 |
(tokenType == #False) ifTrue:[
|
|
|
1795 |
^ false
|
|
|
1796 |
].
|
|
|
1797 |
(tokenType == #Error) ifTrue:[
|
|
|
1798 |
^ #Error
|
|
|
1799 |
].
|
|
|
1800 |
(tokenType == #BinaryOperator) ifTrue:[
|
|
|
1801 |
^ tokenName asSymbol
|
|
|
1802 |
].
|
|
|
1803 |
(tokenType == #Keyword) ifTrue:[
|
|
|
1804 |
^ tokenName asSymbol
|
|
|
1805 |
].
|
|
|
1806 |
(tokenType == #Identifier) ifTrue:[
|
|
|
1807 |
^ tokenName asSymbol
|
|
|
1808 |
].
|
|
|
1809 |
(tokenType == $() ifTrue:[
|
|
|
1810 |
self nextToken.
|
|
|
1811 |
^ self array
|
|
|
1812 |
].
|
|
|
1813 |
(tokenType == $[) ifTrue:[
|
|
|
1814 |
self nextToken.
|
|
|
1815 |
^ self byteArray
|
|
|
1816 |
].
|
|
|
1817 |
(tokenType == #Symbol) ifTrue:[
|
|
|
1818 |
"
|
|
|
1819 |
self warning:'no # for symbols within array-constants'.
|
|
|
1820 |
"
|
|
|
1821 |
^ tokenValue
|
|
|
1822 |
].
|
|
|
1823 |
(tokenType == #HashLeftParen) ifTrue:[
|
|
|
1824 |
"
|
|
|
1825 |
self warning:'no # for arrays within array-constants'.
|
|
|
1826 |
"
|
|
|
1827 |
self nextToken.
|
|
|
1828 |
^ self array
|
|
|
1829 |
].
|
|
|
1830 |
(tokenType == #HashLeftBrack) ifTrue:[
|
|
|
1831 |
"
|
|
|
1832 |
self warning:'no # for arrays within array-constants'.
|
|
|
1833 |
"
|
|
|
1834 |
self nextToken.
|
|
|
1835 |
^ self byteArray
|
|
|
1836 |
].
|
|
|
1837 |
(tokenType == #EOF) ifTrue:[
|
|
|
1838 |
"just for the better error-hilight; let caller handle error"
|
|
|
1839 |
^ #Error
|
|
|
1840 |
].
|
|
|
1841 |
self syntaxError:('error in array-constant; '
|
|
|
1842 |
, tokenType printString
|
|
|
1843 |
, ' unexpected').
|
|
|
1844 |
^ #Error
|
|
|
1845 |
! !
|
|
|
1846 |
|
|
|
1847 |
!Parser methodsFor:'error correction'!
|
|
|
1848 |
|
|
|
1849 |
correctByDeleting
|
|
|
1850 |
"correct (by deleting token) if user wants to;
|
|
19
|
1851 |
return #Error if there was no correction;
|
|
|
1852 |
nil if there was one."
|
|
0
|
1853 |
|
|
|
1854 |
(self confirm:'confirm deleting') ifFalse:[^ #Error].
|
|
|
1855 |
|
|
19
|
1856 |
"
|
|
|
1857 |
tell requestor (i.e. CodeView) about the change
|
|
|
1858 |
this will update what the requestor shows.
|
|
|
1859 |
"
|
|
0
|
1860 |
requestor deleteSelection.
|
|
19
|
1861 |
|
|
|
1862 |
"
|
|
|
1863 |
get the updated source-string
|
|
|
1864 |
which is needed, when we eventually install the new method
|
|
|
1865 |
"
|
|
|
1866 |
correctedSource := requestor currentSourceCode.
|
|
0
|
1867 |
^ nil
|
|
|
1868 |
!
|
|
|
1869 |
|
|
15
|
1870 |
findBestVariablesFor:aString
|
|
|
1871 |
"collect known variables with their spelling distances to aString;
|
|
0
|
1872 |
return the 10 best suggestions"
|
|
|
1873 |
|
|
|
1874 |
|names dists searchBlock args vars globalVarName aClass className baseClass n|
|
|
|
1875 |
|
|
15
|
1876 |
names := OrderedCollection new.
|
|
|
1877 |
dists := OrderedCollection new.
|
|
0
|
1878 |
|
|
|
1879 |
"block arguments"
|
|
|
1880 |
searchBlock := currentBlock.
|
|
|
1881 |
[searchBlock notNil] whileTrue:[
|
|
|
1882 |
args := searchBlock arguments.
|
|
|
1883 |
args notNil ifTrue:[
|
|
|
1884 |
args do:[:aBlockArg |
|
|
|
1885 |
names add:(aBlockArg name).
|
|
7
|
1886 |
dists add:(aString spellAgainst: "levenshteinTo:"(aBlockArg name))
|
|
0
|
1887 |
]
|
|
|
1888 |
].
|
|
|
1889 |
|
|
|
1890 |
vars := searchBlock variables.
|
|
|
1891 |
vars notNil ifTrue:[
|
|
|
1892 |
vars do:[:aBlockVar |
|
|
|
1893 |
names add:(aBlockVar name).
|
|
7
|
1894 |
dists add:(aString spellAgainst: "levenshteinTo:"(aBlockVar name))
|
|
0
|
1895 |
]
|
|
|
1896 |
].
|
|
|
1897 |
searchBlock := searchBlock home
|
|
|
1898 |
].
|
|
|
1899 |
|
|
|
1900 |
"method-variables"
|
|
|
1901 |
methodVars notNil ifTrue:[
|
|
|
1902 |
methodVarNames do:[:methodVarName |
|
|
|
1903 |
names add:methodVarName.
|
|
7
|
1904 |
dists add:(aString spellAgainst: "levenshteinTo:"methodVarName)
|
|
0
|
1905 |
]
|
|
|
1906 |
].
|
|
|
1907 |
|
|
|
1908 |
"method-arguments"
|
|
|
1909 |
methodArgs notNil ifTrue:[
|
|
|
1910 |
methodArgNames do:[:methodArgName |
|
|
|
1911 |
names add:methodArgName.
|
|
7
|
1912 |
dists add:(aString spellAgainst: "levenshteinTo:"methodArgName)
|
|
0
|
1913 |
]
|
|
|
1914 |
].
|
|
|
1915 |
|
|
|
1916 |
"instance-variables"
|
|
|
1917 |
classToCompileFor notNil ifTrue:[
|
|
10
|
1918 |
PrevInstVarNames do:[:instVarName |
|
|
0
|
1919 |
names add:instVarName.
|
|
7
|
1920 |
dists add:(aString spellAgainst: "levenshteinTo:"instVarName)
|
|
0
|
1921 |
]
|
|
|
1922 |
].
|
|
|
1923 |
|
|
|
1924 |
"class-variables"
|
|
|
1925 |
classToCompileFor notNil ifTrue:[
|
|
10
|
1926 |
PrevClassVarNames do:[:classVarName |
|
|
7
|
1927 |
names add:classVarName.
|
|
|
1928 |
dists add:(aString spellAgainst: "levenshteinTo:"classVarName)
|
|
|
1929 |
].
|
|
|
1930 |
|
|
|
1931 |
false ifTrue:[
|
|
0
|
1932 |
aClass := classToCompileFor.
|
|
|
1933 |
aClass isMeta ifTrue:[
|
|
|
1934 |
className := aClass name.
|
|
15
|
1935 |
className := className copyTo:(className size - 5).
|
|
0
|
1936 |
baseClass := Smalltalk at:(className asSymbol).
|
|
|
1937 |
baseClass notNil ifTrue:[
|
|
|
1938 |
aClass := baseClass
|
|
|
1939 |
]
|
|
|
1940 |
].
|
|
|
1941 |
[aClass notNil] whileTrue:[
|
|
|
1942 |
(aClass classVarNames) do:[:classVarName |
|
|
|
1943 |
names add:classVarName.
|
|
7
|
1944 |
dists add:(aString spellAgainst: "levenshteinTo:"classVarName)
|
|
0
|
1945 |
].
|
|
|
1946 |
aClass := aClass superclass
|
|
|
1947 |
]
|
|
7
|
1948 |
].
|
|
0
|
1949 |
].
|
|
|
1950 |
|
|
|
1951 |
"globals"
|
|
|
1952 |
Smalltalk allKeysDo:[:aKey |
|
|
|
1953 |
globalVarName := aKey asString.
|
|
|
1954 |
"only compare strings where length is about right"
|
|
|
1955 |
((globalVarName size - aString size) abs < 3) ifTrue:[
|
|
|
1956 |
names add:globalVarName.
|
|
7
|
1957 |
dists add:(aString spellAgainst: "levenshteinTo:"globalVarName)
|
|
0
|
1958 |
]
|
|
|
1959 |
].
|
|
|
1960 |
|
|
|
1961 |
"misc"
|
|
7
|
1962 |
#('self' 'super' 'nil' 'thisContext') do:[:name |
|
|
|
1963 |
names add:name.
|
|
|
1964 |
dists add:(aString spellAgainst: "levenshteinTo:"name)
|
|
0
|
1965 |
].
|
|
|
1966 |
|
|
|
1967 |
(dists size ~~ 0) ifTrue:[
|
|
|
1968 |
dists sortWith:names.
|
|
7
|
1969 |
dists := dists reverse.
|
|
|
1970 |
names := names reverse.
|
|
0
|
1971 |
n := names size min:10.
|
|
15
|
1972 |
^ names copyTo:n
|
|
0
|
1973 |
].
|
|
|
1974 |
^ nil
|
|
|
1975 |
!
|
|
|
1976 |
|
|
19
|
1977 |
correctVariable
|
|
|
1978 |
"notify error and correct if user wants to;
|
|
|
1979 |
return #Error if there was no correction
|
|
|
1980 |
or a ParseNode as returned by variable"
|
|
|
1981 |
|
|
|
1982 |
|correctIt varName suggestedNames newName pos1 pos2|
|
|
|
1983 |
|
|
|
1984 |
pos1 := tokenPosition.
|
|
|
1985 |
varName := tokenName.
|
|
|
1986 |
pos2 := pos1 + varName size - 1.
|
|
|
1987 |
|
|
|
1988 |
"OLD:
|
|
|
1989 |
(varName at:1) isLowercase ifTrue:[
|
|
|
1990 |
correctIt := self undefError:varName position:pos1 to:pos2.
|
|
|
1991 |
correctIt ifFalse:[^ #Error]
|
|
|
1992 |
] ifFalse:[
|
|
|
1993 |
correctIt := self warning:(varName , ' is undefined') position:pos1 to:pos2.
|
|
|
1994 |
correctIt ifFalse:[
|
|
|
1995 |
^ VariableNode type:#GlobalVariable name:(varName asSymbol)
|
|
|
1996 |
]
|
|
|
1997 |
].
|
|
|
1998 |
"
|
|
|
1999 |
|
|
|
2000 |
correctIt := self undefError:varName position:pos1 to:pos2.
|
|
|
2001 |
correctIt ifFalse:[
|
|
|
2002 |
(varName at:1) isLowercase ifTrue:[
|
|
|
2003 |
^ #Error
|
|
|
2004 |
] ifFalse:[
|
|
|
2005 |
^ VariableNode type:#GlobalVariable name:(varName asSymbol)
|
|
|
2006 |
]
|
|
|
2007 |
].
|
|
|
2008 |
|
|
|
2009 |
suggestedNames := self findBestVariablesFor:varName.
|
|
|
2010 |
suggestedNames notNil ifTrue:[
|
|
|
2011 |
newName := self askForCorrection:'correct variable to: ' fromList:suggestedNames.
|
|
|
2012 |
newName isNil ifTrue:[^ #Error].
|
|
|
2013 |
"
|
|
|
2014 |
newName := suggestedNames at:1.
|
|
|
2015 |
(self confirm:('confirm correction to: ' , newName)) ifFalse:[^ #Error]
|
|
|
2016 |
"
|
|
|
2017 |
] ifFalse:[
|
|
|
2018 |
self notify:'no good correction found'.
|
|
|
2019 |
^ #Error
|
|
|
2020 |
].
|
|
|
2021 |
|
|
|
2022 |
"
|
|
|
2023 |
tell requestor (i.e. CodeView) about the change
|
|
|
2024 |
this will update what the requestor shows.
|
|
|
2025 |
"
|
|
|
2026 |
requestor replaceSelectionBy:newName.
|
|
|
2027 |
"
|
|
|
2028 |
get the updated source-string
|
|
|
2029 |
which is needed, when we eventually install the new method
|
|
|
2030 |
"
|
|
|
2031 |
correctedSource := requestor currentSourceCode.
|
|
|
2032 |
|
|
|
2033 |
"redo parse with new value"
|
|
|
2034 |
tokenName := newName.
|
|
|
2035 |
^ self variableOrError
|
|
|
2036 |
!
|
|
|
2037 |
|
|
|
2038 |
askForCorrection:aString fromList:aList
|
|
|
2039 |
"launch a selection box, which allows user to enter correction.
|
|
|
2040 |
return true for yes, false for no"
|
|
|
2041 |
|
|
|
2042 |
|box|
|
|
|
2043 |
|
|
|
2044 |
ListSelectionBox isNil ifTrue:[
|
|
|
2045 |
^ self confirm:aString
|
|
|
2046 |
].
|
|
|
2047 |
box := ListSelectionBox new.
|
|
|
2048 |
box title:aString.
|
|
|
2049 |
box initialText:(aList at:1).
|
|
|
2050 |
box list:aList.
|
|
|
2051 |
box okText:'correct'.
|
|
|
2052 |
"box abortText:'abort'."
|
|
|
2053 |
box action:[:aString | ^ aString].
|
|
|
2054 |
box showAtPointer.
|
|
|
2055 |
^ nil
|
|
|
2056 |
!
|
|
|
2057 |
|
|
15
|
2058 |
findBestSelectorsFor:aString
|
|
|
2059 |
"collect known selectors with their spelling distances to aString;
|
|
|
2060 |
return the 10 best suggestions"
|
|
|
2061 |
|
|
19
|
2062 |
|info n|
|
|
15
|
2063 |
|
|
|
2064 |
info := SortedCollection new.
|
|
|
2065 |
info sortBlock:[:a :b | a value > b value].
|
|
|
2066 |
|
|
|
2067 |
n := 0.
|
|
|
2068 |
|
|
|
2069 |
Symbol allInstancesDo:[:sym |
|
|
|
2070 |
|dist|
|
|
|
2071 |
|
|
|
2072 |
dist := aString spellAgainst:sym.
|
|
|
2073 |
dist > 20 ifTrue:[
|
|
|
2074 |
info add:(sym -> dist).
|
|
|
2075 |
n := n + 1.
|
|
|
2076 |
n > 10 ifTrue:[
|
|
|
2077 |
info removeLast.
|
|
|
2078 |
]
|
|
|
2079 |
]
|
|
|
2080 |
].
|
|
|
2081 |
|
|
|
2082 |
^ info asOrderedCollection collect:[:a | a key]
|
|
|
2083 |
|
|
19
|
2084 |
"Time millisecondsToRun:[Parser new findBestSelectorsFor:'foo']"
|
|
|
2085 |
"Parser new findBestSelectorsFor:'findBestSel'"
|
|
|
2086 |
"Parser new findBestSelectorsFor:'fildBestSelectrFr'"
|
|
15
|
2087 |
!
|
|
|
2088 |
|
|
19
|
2089 |
correctSelector:aSelectorString message:msg position:pos1 to:pos2
|
|
0
|
2090 |
"notify error and correct if user wants to;
|
|
|
2091 |
return #Error if there was no correction
|
|
|
2092 |
or a ParseNode as returned by variable"
|
|
|
2093 |
|
|
19
|
2094 |
|correctIt suggestedNames newSelector l c|
|
|
0
|
2095 |
|
|
19
|
2096 |
"
|
|
|
2097 |
sorry, but I cannot handle keywords with more than one-part
|
|
|
2098 |
currently (too much work - maybe Ill do it later when everything else works :-)
|
|
|
2099 |
"
|
|
|
2100 |
(aSelectorString occurrencesOf:$:) > 1 ifTrue:[
|
|
|
2101 |
self warning:msg position:pos1 to:pos2.
|
|
|
2102 |
^ aSelectorString
|
|
0
|
2103 |
].
|
|
|
2104 |
|
|
19
|
2105 |
correctIt := self correctableError:msg position:pos1 to:pos2.
|
|
|
2106 |
correctIt ifFalse:[^ aSelectorString].
|
|
|
2107 |
|
|
|
2108 |
suggestedNames := self findBestSelectorsFor:aSelectorString.
|
|
0
|
2109 |
suggestedNames notNil ifTrue:[
|
|
19
|
2110 |
newSelector := self askForCorrection:'correct selector to: ' fromList:suggestedNames.
|
|
|
2111 |
newSelector isNil ifTrue:[^ aSelectorString].
|
|
0
|
2112 |
] ifFalse:[
|
|
|
2113 |
self notify:'no good correction found'.
|
|
19
|
2114 |
^ aSelectorString
|
|
0
|
2115 |
].
|
|
|
2116 |
|
|
19
|
2117 |
"
|
|
|
2118 |
tell requestor (i.e. CodeView) about the change
|
|
|
2119 |
this will update what the requestor shows.
|
|
|
2120 |
"
|
|
0
|
2121 |
|
|
19
|
2122 |
requestor replaceSelectionBy:newSelector keepCursor:false.
|
|
|
2123 |
"
|
|
|
2124 |
get the updated source-string
|
|
|
2125 |
which is needed, when we eventually install the new method
|
|
|
2126 |
"
|
|
|
2127 |
correctedSource := requestor currentSourceCode.
|
|
|
2128 |
|
|
|
2129 |
^ newSelector
|
|
0
|
2130 |
!
|
|
|
2131 |
|
|
19
|
2132 |
selectorCheck:aSelectorString for:receiver position:pos1 to:pos2
|
|
|
2133 |
"just a quick check: if the selector is totally unknown
|
|
|
2134 |
as a symbol, it cannot possibly be understood.
|
|
|
2135 |
Simple, but catches many typos"
|
|
|
2136 |
|
|
|
2137 |
|ok err|
|
|
0
|
2138 |
|
|
19
|
2139 |
(LazyCompilation == true) ifFalse:[
|
|
|
2140 |
ok := aSelectorString knownAsSymbol.
|
|
|
2141 |
err := ' is currently nowhere implemented'.
|
|
|
2142 |
ok ifTrue:[
|
|
|
2143 |
(receiver notNil and:[receiver isConstant]) ifTrue:[
|
|
|
2144 |
ok := receiver evaluate respondsTo:(aSelectorString asSymbol).
|
|
|
2145 |
err := ' will not be understood here'.
|
|
|
2146 |
]
|
|
|
2147 |
].
|
|
|
2148 |
ok ifFalse:[
|
|
0
|
2149 |
|
|
19
|
2150 |
"OLD: "
|
|
|
2151 |
self warning:(aSelectorString , err) position:pos1 to:pos2
|
|
|
2152 |
" "
|
|
|
2153 |
|
|
|
2154 |
"NEW: - not finished - need more interfaces
|
|
|
2155 |
(currently produces warning output on Transcript while filing in
|
|
|
2156 |
|
|
|
2157 |
|
|
|
2158 |
^ self correctSelector:aSelectorString message:(aSelectorString , err) position:pos1 to:pos2
|
|
|
2159 |
"
|
|
|
2160 |
]
|
|
0
|
2161 |
].
|
|
19
|
2162 |
^ aSelectorString
|
|
0
|
2163 |
! !
|