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[263773] First steps towards flattened grammar

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Sebastian Zarnekow 2015-08-18 16:52:08 +02:00
parent e37903ecb5
commit 07e55a6800
2 changed files with 118 additions and 0 deletions
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114
tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/generator/normalization/GrammarFlatteningTest.xtend Normal file
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@ -0,0 +1,114 @@
/**
* Copyright (c) 2015 itemis AG (http://www.itemis.eu) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*/
package org.eclipse.xtext.generator.normalization
import org.eclipse.emf.common.util.URI
import org.eclipse.xtext.Grammar
import org.eclipse.xtext.RuleNames
import org.eclipse.xtext.XtextStandaloneSetup
import org.eclipse.xtext.junit4.AbstractXtextTests
import org.eclipse.xtext.resource.XtextResource
import org.junit.Test
/**
* @author Sebastian Zarnekow - Initial contribution and API
*/
class GrammarFlatteningTest extends AbstractXtextTests {
override void setUp() throws Exception {
super.setUp()
with(XtextStandaloneSetup)
}
override Grammar getModel(String model) throws Exception {
var Grammar grammar = super.getModel(model) as Grammar
var RuleNames ruleNames = RuleNames.getRuleNames(grammar, false)
var RuleFilter filter = new RuleFilter()
var Grammar result = FlattenedGrammarProvider.flatten(grammar, ruleNames, filter)
var XtextResource resource = get(XtextResource)
resource.getContents().add(result)
resource.setURI(URI.createURI("synthetic://flattened.xtext"))
return result
}
@Test def void test_01() throws Exception {
var Grammar flattened = getModel(
'''
grammar com.foo.bar with org.eclipse.xtext.common.Terminals
generate myPack 'http://myURI'
Rule: name=ID;
''')
var String serialized = getSerializer().serialize(flattened)
assertEquals('''
grammar com.foo.bar hidden(RULE_WS, RULE_ML_COMMENT, RULE_SL_COMMENT)
ruleRule:
name=RULE_ID;
terminal RULE_ID:
"^"? ("a".."z" | "A".."Z" | "_") ("a".."z" | "A".."Z" | "_" | "0".."9")*;
terminal RULE_INT:
"0".."9"+;
terminal RULE_STRING:
"\"" ("\\" . | !("\\" | "\""))* "\"" | "\'" ("\\" . | !("\\" | "\'"))* "\'";
terminal RULE_ML_COMMENT:
"/*"->"*/";
terminal RULE_SL_COMMENT:
"//" !("\n" | "\r")* ("\r"? "\n")?;
terminal RULE_WS:
" " | "\t" | "\r" | "\n"+;
terminal RULE_ANY_OTHER:
.;'''.toString, serialized)
}
@Test def void test_02() throws Exception {
var Grammar flattened = getModel(
'''
grammar com.foo.bar with org.eclipse.xtext.common.Terminals
generate myPack 'http://myURI'
Rule: name=ID;
terminal ID: super;
''')
var String serialized = getSerializer().serialize(flattened)
assertEquals('''
grammar com.foo.bar hidden(RULE_WS, RULE_ML_COMMENT, RULE_SL_COMMENT)
ruleRule:
name=RULE_ID;
terminal RULE_ID:
SUPER_ID;
terminal fragment SUPER_ID:
"^"? ("a".."z" | "A".."Z" | "_") ("a".."z" | "A".."Z" | "_" | "0".."9")*;
terminal RULE_INT:
"0".."9"+;
terminal RULE_STRING:
"\"" ("\\" . | !("\\" | "\""))* "\"" | "\'" ("\\" . | !("\\" | "\'"))* "\'";
terminal RULE_ML_COMMENT:
"/*"->"*/";
terminal RULE_SL_COMMENT:
"//" !("\n" | "\r")* ("\r"? "\n")?;
terminal RULE_WS:
" " | "\t" | "\r" | "\n"+;
terminal RULE_ANY_OTHER:
.;'''.toString, serialized)
}
}

4
tests/org.eclipse.xtext.tests/src/org/eclipse/xtext/grammarinheritance/ConcreteTestLanguage.xtext
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@ -44,3 +44,7 @@ Subrule3:
CallExtendedParserRule:
call=AbstractCallExtendedParserRule;
terminal ID:
super
;