testattributes.java

antlr最新版本V3源代码

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope Symbols {\n" +
				"  int n;\n" +
				"  List names;\n" +
				"}\n" +
				"a scope Symbols; : (id=ID ';' {"+action+"} )+\n" +
				"  ;\n" +
				"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testUnknownGlobalScope() throws Exception {
		String action = "$Symbols::names.add($id.text);";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
			"a scope Symbols; : (id=ID ';' {"+action+"} )+\n" +
			"  ;\n" +
			"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);

		assertEquals("unexpected errors: "+equeue, 2, equeue.errors.size());

		int expectedMsgID = ErrorManager.MSG_UNKNOWN_DYNAMIC_SCOPE;
		Object expectedArg = "Symbols";
		GrammarSemanticsMessage expectedMessage =
			new GrammarSemanticsMessage(expectedMsgID, g, null, expectedArg);
		checkError(equeue, expectedMessage);
	}

	public void testIndexedGlobalScope() throws Exception {
		String action = "$Symbols[-1]::names.add($id.text);";
		String expecting =
			"((Symbols_scope)Symbols_stack.elementAt(Symbols_stack.size()-1-1)).names.add(id.getText());";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope Symbols {\n" +
				"  int n;\n" +
				"  List names;\n" +
				"}\n" +
				"a scope Symbols; : (id=ID ';' {"+action+"} )+\n" +
				"  ;\n" +
				"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void test0IndexedGlobalScope() throws Exception {
		String action = "$Symbols[0]::names.add($id.text);";
		String expecting =
			"((Symbols_scope)Symbols_stack.elementAt(0)).names.add(id.getText());";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope Symbols {\n" +
				"  int n;\n" +
				"  List names;\n" +
				"}\n" +
				"a scope Symbols; : (id=ID ';' {"+action+"} )+\n" +
				"  ;\n" +
				"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testAbsoluteIndexedGlobalScope() throws Exception {
		String action = "$Symbols[3]::names.add($id.text);";
		String expecting =
			"((Symbols_scope)Symbols_stack.elementAt(3)).names.add(id.getText());";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope Symbols {\n" +
				"  int n;\n" +
				"  List names;\n" +
				"}\n" +
				"a scope Symbols; : (id=ID ';' {"+action+"} )+\n" +
				"  ;\n" +
				"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testScopeAndAttributeWithUnderscore() throws Exception {
		String action = "$foo_bar::a_b;";
		String expecting = "((foo_bar_scope)foo_bar_stack.peek()).a_b;";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope foo_bar {\n" +
				"  int a_b;\n" +
				"}\n" +
				"a scope foo_bar; : (ID {"+action+"} )+\n" +
				"  ;\n" +
				"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();

		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testSharedGlobalScope() throws Exception {
		String action = "$Symbols::x;";
		String expecting = "((Symbols_scope)Symbols_stack.peek()).x;";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope Symbols {\n" +
				"  String x;\n" +
				"}\n" +
				"a\n"+
				"scope { int y; }\n"+
				"scope Symbols;\n" +
				" : b {"+action+"}\n" +
				" ;\n" +
				"b : ID {$Symbols::x=$ID.text} ;\n" +
				"ID : 'a';\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testGlobalScopeOutsideRule() throws Exception {
		String action = "public void foo() {$Symbols::names.add('foo');}";
		String expecting = "public void foo() {((Symbols_scope)Symbols_stack.peek()).names.add('foo');}";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"scope Symbols {\n" +
				"  int n;\n" +
				"  List names;\n" +
				"}\n" +
				"@members {'+action+'}\n" +
				"a : \n" +
				"  ;\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testRuleScopeOutsideRule() throws Exception {
		String action = "public void foo() {$a::name;}";
		String expecting = "public void foo() {((a_scope)a_stack.peek()).name;}";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"@members {"+action+"}\n" +
				"a\n" +
				"scope { int name; }\n" +
				"  : {foo();}\n" +
				"  ;\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,
																	 null,
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),0);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testBasicRuleScope() throws Exception {
		String action = "$a::n;";
		String expecting = "((a_scope)a_stack.peek()).n;";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"a\n" +
				"scope {\n" +
				"  int n;\n" +
				"} : {"+action+"}\n" +
				"  ;\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates
		ActionTranslatorLexer translator = new ActionTranslatorLexer(generator,"a",
																	 new antlr.CommonToken(ANTLRParser.ACTION,action),1);
		String rawTranslation =
			translator.translate();
		StringTemplateGroup templates =
			new StringTemplateGroup(".", AngleBracketTemplateLexer.class);
		StringTemplate actionST = new StringTemplate(templates, rawTranslation);
		String found = actionST.toString();
		assertEquals(expecting, found);

		assertEquals("unexpected errors: "+equeue, 0, equeue.errors.size());
	}

	public void testUnqualifiedRuleScopeAccessInsideRule() throws Exception {
		String action = "$n;";
		String expecting = action;

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"a\n" +
				"scope {\n" +
				"  int n;\n" +
				"} : {"+action+"}\n" +
				"  ;\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);
		generator.genRecognizer(); // forces load of templates

		int expectedMsgID = ErrorManager.MSG_ISOLATED_RULE_ATTRIBUTE;
		Object expectedArg = "n";
		Object expectedArg2 = null;
		GrammarSemanticsMessage expectedMessage =
			new GrammarSemanticsMessage(expectedMsgID, g, null, expectedArg,
										expectedArg2);
		checkError(equeue, expectedMessage);
	}

	public void testIsolatedDynamicRuleScopeRef() throws Exception {
		String action = "$a;"; // refers to stack not top of stack
		String expecting = "a_stack;";

		ErrorQueue equeue = new ErrorQueue();
		ErrorManager.setErrorListener(equeue);
		Grammar g = new Grammar(
			"grammar t;\n"+
				"a\n" +
				"scope {\n" +
				"  int n;\n" +
				"} : b ;\n" +
				"b : {"+action+"}\n" +
				"  ;\n");
		Tool antlr = newTool();
		CodeGenerator generator = new CodeGenerator(antlr, g, "Java");
		g.setCodeGenerator(generator);