assigntokentypeswalker.java

ANTLR(ANother Tool for Language Recognition)它是这样的一种工具

					option(_t,opts);
					_t = _retTree;
				}
				else {
					if ( _cnt20>=1 ) { break _loop20; } else {throw new NoViableAltException(_t);}
				}
				
				_cnt20++;
			} while (true);
			}
			_t = __t18;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
		return opts;
	}
	
	public final void tokensSpec(AST _t) throws RecognitionException {
		
		GrammarAST tokensSpec_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t30 = _t;
			GrammarAST tmp7_AST_in = (GrammarAST)_t;
			match(_t,TOKENS);
			_t = _t.getFirstChild();
			{
			int _cnt32=0;
			_loop32:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==ASSIGN||_t.getType()==TOKEN_REF)) {
					tokenSpec(_t);
					_t = _retTree;
				}
				else {
					if ( _cnt32>=1 ) { break _loop32; } else {throw new NoViableAltException(_t);}
				}
				
				_cnt32++;
			} while (true);
			}
			_t = __t30;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void attrScope(AST _t) throws RecognitionException {
		
		GrammarAST attrScope_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t16 = _t;
			GrammarAST tmp8_AST_in = (GrammarAST)_t;
			match(_t,SCOPE);
			_t = _t.getFirstChild();
			GrammarAST tmp9_AST_in = (GrammarAST)_t;
			match(_t,ID);
			_t = _t.getNextSibling();
			GrammarAST tmp10_AST_in = (GrammarAST)_t;
			match(_t,ACTION);
			_t = _t.getNextSibling();
			_t = __t16;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void rules(AST _t) throws RecognitionException {
		
		GrammarAST rules_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			{
			int _cnt38=0;
			_loop38:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==RULE)) {
					rule(_t);
					_t = _retTree;
				}
				else {
					if ( _cnt38>=1 ) { break _loop38; } else {throw new NoViableAltException(_t);}
				}
				
				_cnt38++;
			} while (true);
			}
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void option(AST _t,
		Map opts
	) throws RecognitionException {
		
		GrammarAST option_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST id = null;
		
		String key=null;
		Object value=null;
		
		
		try {      // for error handling
			AST __t22 = _t;
			GrammarAST tmp11_AST_in = (GrammarAST)_t;
			match(_t,ASSIGN);
			_t = _t.getFirstChild();
			id = (GrammarAST)_t;
			match(_t,ID);
			_t = _t.getNextSibling();
			key=id.getText();
			value=optionValue(_t);
			_t = _retTree;
			_t = __t22;
			_t = _t.getNextSibling();
			
			opts.put(key,value);
			// check for grammar-level option to import vocabulary
			if ( currentRuleName==null && key.equals("tokenVocab") ) {
			grammar.importTokenVocabulary((String)value);
			}
			
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final Object  optionValue(AST _t) throws RecognitionException {
		Object value=null;
		
		GrammarAST optionValue_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST id = null;
		GrammarAST s = null;
		GrammarAST c = null;
		GrammarAST i = null;
		
		try {      // for error handling
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case ID:
			{
				id = (GrammarAST)_t;
				match(_t,ID);
				_t = _t.getNextSibling();
				value = id.getText();
				break;
			}
			case STRING_LITERAL:
			{
				s = (GrammarAST)_t;
				match(_t,STRING_LITERAL);
				_t = _t.getNextSibling();
				value = s.getText();
				break;
			}
			case CHAR_LITERAL:
			{
				c = (GrammarAST)_t;
				match(_t,CHAR_LITERAL);
				_t = _t.getNextSibling();
				value = c.getText();
				break;
			}
			case INT:
			{
				i = (GrammarAST)_t;
				match(_t,INT);
				_t = _t.getNextSibling();
				value = new Integer(i.getText());
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
		return value;
	}
	
	public final void charSet(AST _t) throws RecognitionException {
		
		GrammarAST charSet_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t25 = _t;
			GrammarAST tmp12_AST_in = (GrammarAST)_t;
			match(_t,CHARSET);
			_t = _t.getFirstChild();
			charSetElement(_t);
			_t = _retTree;
			_t = __t25;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void charSetElement(AST _t) throws RecognitionException {
		
		GrammarAST charSetElement_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST c = null;
		GrammarAST c1 = null;
		GrammarAST c2 = null;
		GrammarAST c3 = null;
		GrammarAST c4 = null;
		
		try {      // for error handling
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case CHAR_LITERAL:
			{
				c = (GrammarAST)_t;
				match(_t,CHAR_LITERAL);
				_t = _t.getNextSibling();
				break;
			}
			case OR:
			{
				AST __t27 = _t;
				GrammarAST tmp13_AST_in = (GrammarAST)_t;
				match(_t,OR);
				_t = _t.getFirstChild();
				c1 = (GrammarAST)_t;
				match(_t,CHAR_LITERAL);
				_t = _t.getNextSibling();
				c2 = (GrammarAST)_t;
				match(_t,CHAR_LITERAL);
				_t = _t.getNextSibling();
				_t = __t27;
				_t = _t.getNextSibling();
				break;
			}
			case RANGE:
			{
				AST __t28 = _t;
				GrammarAST tmp14_AST_in = (GrammarAST)_t;
				match(_t,RANGE);
				_t = _t.getFirstChild();
				c3 = (GrammarAST)_t;
				match(_t,CHAR_LITERAL);
				_t = _t.getNextSibling();
				c4 = (GrammarAST)_t;
				match(_t,CHAR_LITERAL);
				_t = _t.getNextSibling();
				_t = __t28;
				_t = _t.getNextSibling();
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void tokenSpec(AST _t) throws RecognitionException {
		
		GrammarAST tokenSpec_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST t = null;
		GrammarAST t2 = null;
		GrammarAST s = null;
		GrammarAST c = null;
		
		try {      // for error handling
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case TOKEN_REF:
			{
				t = (GrammarAST)_t;
				match(_t,TOKEN_REF);
				_t = _t.getNextSibling();
				trackToken(t);
				break;
			}
			case ASSIGN:
			{
				AST __t34 = _t;
				GrammarAST tmp15_AST_in = (GrammarAST)_t;
				match(_t,ASSIGN);
				_t = _t.getFirstChild();
				t2 = (GrammarAST)_t;
				match(_t,TOKEN_REF);
				_t = _t.getNextSibling();
				trackToken(t2);
				{
				if (_t==null) _t=ASTNULL;
				switch ( _t.getType()) {
				case STRING_LITERAL:
				{
					s = (GrammarAST)_t;
					match(_t,STRING_LITERAL);
					_t = _t.getNextSibling();
					trackString(s); alias(t2,s);
					break;
				}
				case CHAR_LITERAL:
				{
					c = (GrammarAST)_t;
					match(_t,CHAR_LITERAL);
					_t = _t.getNextSibling();
					trackString(c); alias(t2,c);
					break;
				}
				default:
				{
					throw new NoViableAltException(_t);
				}
				}
				}
				_t = __t34;
				_t = _t.getNextSibling();
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void rule(AST _t) throws RecognitionException {
		
		GrammarAST rule_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST id = null;
		GrammarAST m = null;
		GrammarAST b = null;
		
		try {      // for error handling
			AST __t40 = _t;
			GrammarAST tmp16_AST_in = (GrammarAST)_t;
			match(_t,RULE);
			_t = _t.getFirstChild();
			id = (GrammarAST)_t;
			match(_t,ID);
			_t = _t.getNextSibling();
			currentRuleName=id.getText();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case FRAGMENT:
			case LITERAL_protected:
			case LITERAL_public:
			case LITERAL_private:
			{
				m = _t==ASTNULL ? null : (GrammarAST)_t;
				modifier(_t);
				_t = _retTree;
				break;
			}
			case ARG:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			{
			GrammarAST tmp17_AST_in = (GrammarAST)_t;
			match(_t,ARG);
			_t = _t.getNextSibling();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case ARG_ACTION:
			{
				GrammarAST tmp18_AST_in = (GrammarAST)_t;
				match(_t,ARG_ACTION);
				_t = _t.getNextSibling();
				break;
			}
			case RET:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			}
			{
			GrammarAST tmp19_AST_in = (GrammarAST)_t;
			match(_t,RET);
			_t = _t.getNextSibling();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case ARG_ACTION:
			{
				GrammarAST tmp20_AST_in = (GrammarAST)_t;
				match(_t,ARG_ACTION);
				_t = _t.getNextSibling();
				break;
			}
			case OPTIONS:
			case BLOCK:
			case SCOPE:
			case AMPERSAND:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			}
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case OPTIONS:
			{
				optionsSpec(_t);
				_t = _retTree;
				break;
			}
			case BLOCK:
			case SCOPE:
			case AMPERSAND:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case SCOPE:
			{
				ruleScopeSpec(_t);
				_t = _retTree;
				break;
			}
			case BLOCK:
			case AMPERSAND:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			{
			_loop49:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==AMPERSAND)) {
					GrammarAST tmp21_AST_in = (GrammarAST)_t;
					match(_t,AMPERSAND);
					_t = _t.getNextSibling();
				}
				else {
					break _loop49;
				}
				
			} while (true);
			}
			b = _t==ASTNULL ? null : (GrammarAST)_t;
			block(_t);
			_t = _retTree;
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case LITERAL_exception:
			{
				exceptionGroup(_t);
				_t = _retTree;
				break;
			}