compiler/tests/extras/PPExpressionGrammar.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Fri, 24 Jul 2015 19:42:09 +0100
changeset 504 0fb1f0799fc1
parent 464 f6d77fee9811
permissions -rw-r--r--
Portability fix: override #new for class that implements #initialize #initialize is not sent by default.
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"{ Package: 'stx:goodies/petitparser/compiler/tests/extras' }"
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"{ NameSpace: Smalltalk }"
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PPCompositeParser subclass:#PPExpressionGrammar
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	instanceVariableNames:'add prod term mul prim parens number'
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	classVariableNames:''
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	poolDictionaries:''
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	category:'PetitCompiler-Extras-Tests-Expressions'
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!
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!PPExpressionGrammar methodsFor:'as yet unclassified'!
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f6d77fee9811 Updated to PetitCompiler-JanKurs.118, PetitCompiler-Tests-JanKurs.46, PetitCompiler-Extras-Tests-JanKurs.11, and PetitCompiler-Benchmarks-JanKurs.11
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add
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   ^ prod , $+ asParser trimmingToken , term
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!
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f6d77fee9811 Updated to PetitCompiler-JanKurs.118, PetitCompiler-Tests-JanKurs.46, PetitCompiler-Extras-Tests-JanKurs.11, and PetitCompiler-Benchmarks-JanKurs.11
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mul
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   ^ prim , $* asParser trimmingToken , prod
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!
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number
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   ^ #digit asParser plus trimmingToken ==> [ :token | token inputValue asNumber ]
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!
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parens
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   ^ ($( asParser token trim), term , ($) asParser token trim)
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!
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prim
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   ^ parens / number
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!
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prod
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   ^ mul / prim
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!
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start
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   ^ term end
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!
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term
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   ^ add / prod
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! !
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