author | Jan Vrany <jan.vrany@fit.cvut.cz> |
Tue, 07 Oct 2014 09:42:03 +0100 | |
changeset 385 | 44a36ed4e484 |
parent 382 | 1825151d6455 |
child 405 | 0470a5e6e712 |
permissions | -rw-r--r-- |
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"{ Package: 'stx:goodies/petitparser/tests' }" |
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PPAbstractParserTest subclass:#PPScriptingTest |
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instanceVariableNames:'' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'PetitTests-Tests' |
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! |
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PPScriptingTest comment:'These are some simple demo-scripts of parser combinators for the compiler construction course. http://www.iam.unibe.ch/~scg/Teaching/CC/index.html' |
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! |
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!PPScriptingTest methodsFor:'examples'! |
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expressionInterpreter |
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"Same as #expressionInterpreter but with semantic actions." |
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| mul prim add dec | |
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add := PPUnresolvedParser new. |
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mul := PPUnresolvedParser new. |
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prim := PPUnresolvedParser new. |
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dec := (Interval from: $0 to: $9) asParser ==> [ :token | token codePoint - $0 codePoint ]. |
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add def: ((mul , $+ asParser , add) ==> [ :nodes | (nodes at: 1) + (nodes at: 3) ]) |
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/ mul. |
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mul def: ((prim , $* asParser , mul) ==> [ :nodes | (nodes at: 1) * (nodes at: 3) ]) |
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/ prim. |
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prim def: (($( asParser , add , $) asParser) ==> [ :nodes | nodes at: 2 ]) |
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/ dec. |
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^ add end |
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"Modified: / 05-10-2014 / 00:02:58 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! |
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expressionParser |
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"Simple demo of scripting an expression parser." |
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| mul prim add dec | |
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add := PPUnresolvedParser new. |
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mul := PPUnresolvedParser new. |
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prim := PPUnresolvedParser new. |
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dec := (Interval from: $0 to: $9) asParser. |
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add def: (mul , $+ asParser , add) |
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/ mul. |
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mul def: (prim , $* asParser , mul) |
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/ prim. |
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prim def: ($( asParser , add , $) asParser) |
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/ dec. |
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^ add end |
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"Modified: / 05-10-2014 / 00:03:01 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! |
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straightLineParser |
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| goal stm stmList id char dec exp expList mulExp primExp nonzero num lower upper | |
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goal := PPUnresolvedParser new. |
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stmList := PPUnresolvedParser new. |
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stm := PPUnresolvedParser new. |
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exp := PPUnresolvedParser new. |
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expList := PPUnresolvedParser new. |
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mulExp := PPUnresolvedParser new. |
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primExp := PPUnresolvedParser new. |
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lower := (Interval from: $a to: $z) asParser. |
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upper := (Interval from: $A to: $Z) asParser. |
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char := lower / upper. |
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nonzero := (Interval from: $1 to: $9) asParser. |
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dec := (Interval from: $0 to: $9) asParser. |
44a36ed4e484
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id := char, ( char / dec ) star. |
44a36ed4e484
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num := $0 asParser / ( nonzero, dec star). |
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goal def: stmList end. |
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stmList def: stm , ( $; asParser, stm ) star. |
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stm def: ( id, ':=' asParser, exp ) |
44a36ed4e484
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/ ( 'print' asParser, $( asParser, expList, $) asParser ). |
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exp def: mulExp, ( ( $+ asParser / $- asParser ), mulExp ) star. |
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expList def: exp, ( $, asParser, exp ) star. |
44a36ed4e484
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mulExp def: primExp, ( ( $* asParser / $/ asParser ), primExp ) star. |
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primExp def: id |
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/ num |
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/ ( $( asParser, stmList, $, asParser, exp, $) asParser ). |
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^ goal |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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"Modified: / 05-10-2014 / 00:03:11 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! ! |
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!PPScriptingTest methodsFor:'tests'! |
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testExpressionInterpreter |
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self |
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assert: self expressionInterpreter |
44a36ed4e484
Commited a Smalltalk parser (MC package PetitSmalltalk)
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parse: '2*(3+4)' |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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to: 14 |
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! |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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testExpressionParser |
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self |
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assert: self expressionParser |
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parse: '2*(3+4)' |
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to: #($2 $* ($( ($3 $+ $4) $))) |
44a36ed4e484
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! |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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testSLassign |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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self assert: self straightLineParser |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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106 |
parse: 'abc:=1' |
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107 |
to: #(#($a #($b $c) ':=' #(#(#($1 #()) #()) #())) #()) |
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108 |
! |
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109 |
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110 |
testSLprint |
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111 |
self |
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112 |
assert: self straightLineParser |
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113 |
parse: 'print(3,4)' |
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114 |
to: #(('print' $( ((($3 ()) ()) () (($, ((($4 ()) ()) ())))) $)) ()) |
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115 |
! ! |
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116 |
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117 |
!PPScriptingTest class methodsFor:'documentation'! |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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118 |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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119 |
version |
44a36ed4e484
Commited a Smalltalk parser (MC package PetitSmalltalk)
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120 |
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPScriptingTest.st,v 1.4 2014-03-04 14:34:23 cg Exp $' |
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121 |
! |
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122 |
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123 |
version_CVS |
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124 |
^ '$Header: /cvs/stx/stx/goodies/petitparser/PPScriptingTest.st,v 1.4 2014-03-04 14:34:23 cg Exp $' |
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125 |
! |
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126 |
|
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127 |
version_HG |
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128 |
|
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129 |
^ '$Changeset: <not expanded> $' |
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130 |
! |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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131 |
|
44a36ed4e484
Commited a Smalltalk parser (MC package PetitSmalltalk)
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132 |
version_SVN |
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133 |
^ '$Id: PPScriptingTest.st,v 1.4 2014-03-04 14:34:23 cg Exp $' |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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134 |
! ! |
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Commited a Smalltalk parser (MC package PetitSmalltalk)
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135 |