PPEndOfFileParser.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Tue, 16 Jun 2015 06:45:26 +0100
changeset 489 0ca7a70db0f5
parent 427 a7f5e6de19d2
permissions -rw-r--r--
Fix in codegen for inlined sequence nodes. For inlined sequence nodes, generate nested ifs rather than sequential code which does not work when inlined. The reason is that #codeReturn: in inline generates instvar assignment, not method return, so in sequential code the next child of a sequence will be probed even if previous failed. If that happends, the whole sequence fail and therefore we must generate nested ifs to correctly handle this w.r.t. inlining.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
427
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     1
"{ Package: 'stx:goodies/petitparser' }"
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     2
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     3
"{ NameSpace: Smalltalk }"
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     4
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     5
PPParser subclass:#PPEndOfFileParser
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     6
	instanceVariableNames:''
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     7
	classVariableNames:''
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     8
	poolDictionaries:''
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
     9
	category:'PetitParser-Parsers'
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    10
!
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    11
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    12
!PPEndOfFileParser methodsFor:'as yet unclassified'!
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    13
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    14
acceptsEpsilon
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    15
	^ true
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    16
!
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    17
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    18
exampleOn: aStream 
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    19
	aStream nextPutAll: #'end-of-input'
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    20
!
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    21
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    22
isNullable 
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    23
	^ true
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    24
!
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    25
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    26
nonEmpty
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    27
	"I know I am empty, but it does not count in my case, I represent virtual non-existent character"
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    28
	^ self
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    29
!
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    30
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    31
parseOn: aPPContext
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    32
	(aPPContext atEnd) ifFalse:
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    33
	[
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    34
		^ PPFailure message: 'end of input expected' context: aPPContext.
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    35
	].
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    36
	^ #'end-of-input'
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    37
! !
a7f5e6de19d2 Merged JK's version from Monticello
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
diff changeset
    38