antlrtreeprinter.java

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

				match(_t,ASSIGN);
				_t = _t.getFirstChild();
				GrammarAST tmp32_AST_in = (GrammarAST)_t;
				match(_t,TOKEN_REF);
				_t = _t.getNextSibling();
				{
				if (_t==null) _t=ASTNULL;
				switch ( _t.getType()) {
				case STRING_LITERAL:
				{
					GrammarAST tmp33_AST_in = (GrammarAST)_t;
					match(_t,STRING_LITERAL);
					_t = _t.getNextSibling();
					break;
				}
				case CHAR_LITERAL:
				{
					GrammarAST tmp34_AST_in = (GrammarAST)_t;
					match(_t,CHAR_LITERAL);
					_t = _t.getNextSibling();
					break;
				}
				default:
				{
					throw new NoViableAltException(_t);
				}
				}
				}
				_t = __t36;
				_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 modifier(AST _t) throws RecognitionException {
		
		GrammarAST modifier_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		out(modifier_AST_in.getText()); out(" ");
		
		try {      // for error handling
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case LITERAL_protected:
			{
				GrammarAST tmp35_AST_in = (GrammarAST)_t;
				match(_t,LITERAL_protected);
				_t = _t.getNextSibling();
				break;
			}
			case LITERAL_public:
			{
				GrammarAST tmp36_AST_in = (GrammarAST)_t;
				match(_t,LITERAL_public);
				_t = _t.getNextSibling();
				break;
			}
			case LITERAL_private:
			{
				GrammarAST tmp37_AST_in = (GrammarAST)_t;
				match(_t,LITERAL_private);
				_t = _t.getNextSibling();
				break;
			}
			case FRAGMENT:
			{
				GrammarAST tmp38_AST_in = (GrammarAST)_t;
				match(_t,FRAGMENT);
				_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 ruleScopeSpec(AST _t) throws RecognitionException {
		
		GrammarAST ruleScopeSpec_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t57 = _t;
			GrammarAST tmp39_AST_in = (GrammarAST)_t;
			match(_t,SCOPE);
			_t = _t.getFirstChild();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case ACTION:
			{
				GrammarAST tmp40_AST_in = (GrammarAST)_t;
				match(_t,ACTION);
				_t = _t.getNextSibling();
				break;
			}
			case 3:
			case ID:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			{
			_loop60:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==ID)) {
					GrammarAST tmp41_AST_in = (GrammarAST)_t;
					match(_t,ID);
					_t = _t.getNextSibling();
				}
				else {
					break _loop60;
				}
				
			} while (true);
			}
			_t = __t57;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void ruleAction(AST _t) throws RecognitionException {
		
		GrammarAST ruleAction_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST id = null;
		GrammarAST a = null;
		
		try {      // for error handling
			AST __t54 = _t;
			GrammarAST tmp42_AST_in = (GrammarAST)_t;
			match(_t,AMPERSAND);
			_t = _t.getFirstChild();
			id = (GrammarAST)_t;
			match(_t,ID);
			_t = _t.getNextSibling();
			a = (GrammarAST)_t;
			match(_t,ACTION);
			_t = _t.getNextSibling();
			_t = __t54;
			_t = _t.getNextSibling();
			if ( showActions ) out("@"+id.getText()+"{"+a.getText()+"}");
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void block(AST _t,
		boolean forceParens
	) throws RecognitionException {
		
		GrammarAST block_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		int numAlts = countAltsForBlock(block_AST_in);
		
		
		try {      // for error handling
			AST __t62 = _t;
			GrammarAST tmp43_AST_in = (GrammarAST)_t;
			match(_t,BLOCK);
			_t = _t.getFirstChild();
			if ( forceParens||numAlts>1 ) out(" (");
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case OPTIONS:
			{
				optionsSpec(_t);
				_t = _retTree;
				out(" : ");
				break;
			}
			case ALT:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			alternative(_t);
			_t = _retTree;
			rewrite(_t);
			_t = _retTree;
			{
			_loop65:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==ALT)) {
					out(" | ");
					alternative(_t);
					_t = _retTree;
					rewrite(_t);
					_t = _retTree;
				}
				else {
					break _loop65;
				}
				
			} while (true);
			}
			GrammarAST tmp44_AST_in = (GrammarAST)_t;
			match(_t,EOB);
			_t = _t.getNextSibling();
			if ( forceParens||numAlts>1 ) out(")");
			_t = __t62;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void exceptionGroup(AST _t) throws RecognitionException {
		
		GrammarAST exceptionGroup_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			{
			int _cnt79=0;
			_loop79:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==LITERAL_exception)) {
					exceptionSpec(_t);
					_t = _retTree;
				}
				else {
					if ( _cnt79>=1 ) { break _loop79; } else {throw new NoViableAltException(_t);}
				}
				
				_cnt79++;
			} while (true);
			}
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void rewrite(AST _t) throws RecognitionException {
		
		GrammarAST rewrite_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			{
			_loop101:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==REWRITE)) {
					single_rewrite(_t);
					_t = _retTree;
				}
				else {
					break _loop101;
				}
				
			} while (true);
			}
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final int  countAltsForBlock(AST _t) throws RecognitionException {
		int n=0;
		
		GrammarAST countAltsForBlock_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t67 = _t;
			GrammarAST tmp45_AST_in = (GrammarAST)_t;
			match(_t,BLOCK);
			_t = _t.getFirstChild();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case OPTIONS:
			{
				GrammarAST tmp46_AST_in = (GrammarAST)_t;
				match(_t,OPTIONS);
				_t = _t.getNextSibling();
				break;
			}
			case ALT:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			{
			int _cnt72=0;
			_loop72:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==ALT)) {
					GrammarAST tmp47_AST_in = (GrammarAST)_t;
					match(_t,ALT);
					_t = _t.getNextSibling();
					{
					_loop71:
					do {
						if (_t==null) _t=ASTNULL;
						if ((_t.getType()==REWRITE)) {
							GrammarAST tmp48_AST_in = (GrammarAST)_t;
							match(_t,REWRITE);
							_t = _t.getNextSibling();
						}
						else {
							break _loop71;
						}
						
					} while (true);
					}
					n++;
				}
				else {
					if ( _cnt72>=1 ) { break _loop72; } else {throw new NoViableAltException(_t);}
				}
				
				_cnt72++;
			} while (true);
			}
			GrammarAST tmp49_AST_in = (GrammarAST)_t;
			match(_t,EOB);
			_t = _t.getNextSibling();
			_t = __t67;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
		return n;
	}
	
	public final void exceptionSpec(AST _t) throws RecognitionException {
		
		GrammarAST exceptionSpec_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t81 = _t;
			GrammarAST tmp50_AST_in = (GrammarAST)_t;
			match(_t,LITERAL_exception);
			_t = _t.getFirstChild();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case ARG_ACTION:
			{
				GrammarAST tmp51_AST_in = (GrammarAST)_t;
				match(_t,ARG_ACTION);
				_t = _t.getNextSibling();
				break;
			}
			case 3:
			case LITERAL_catch:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			{
			_loop84:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==LITERAL_catch)) {
					exceptionHandler(_t);
					_t = _retTree;
				}
				else {
					break _loop84;
				}
				
			} while (true);
			}
			_t = __t81;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void exceptionHandler(AST _t) throws RecognitionException {
		
		GrammarAST exceptionHandler_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		
		try {      // for error handling
			AST __t86 = _t;
			GrammarAST tmp52_AST_in = (GrammarAST)_t;
			match(_t,LITERAL_catch);
			_t = _t.getFirstChild();
			GrammarAST tmp53_AST_in = (GrammarAST)_t;
			match(_t,ARG_ACTION);
			_t = _t.getNextSibling();
			GrammarAST tmp54_AST_in = (GrammarAST)_t;
			match(_t,ACTION);
			_t = _t.getNextSibling();
			_t = __t86;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void rewrite_template(AST _t) throws RecognitionException {
		
		GrammarAST rewrite_template_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST id = null;
		GrammarAST ind = null;
		GrammarAST arg = null;
		GrammarAST a = null;
		
		try {      // for error handling
			AST __t92 = _t;
			GrammarAST tmp55_AST_in = (GrammarAST)_t;
			match(_t,TEMPLATE);
			_t = _t.getFirstChild();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case ID:
			{
				id = (GrammarAST)_t;
				match(_t,ID);
				_t = _t.getNextSibling();
				out(" "+id.getText());
				break;
			}
			case ACTION:
			{
				ind = (GrammarAST)_t;
				match(_t,ACTION);
				_t = _t.getNextSibling();
				out(" ({"+ind.getText()+"})");
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			AST __t94 = _t;
			GrammarAST tmp56_AST_in = (GrammarAST)_t;
			match(_t,ARGLIST);
			_t = _t.getFirstChild();
			out("(");
			{
			_loop97:
			do {
				if (_t==null) _t=ASTNULL;
				if ((_t.getType()==ARG)) {
					AST __t96 = _t;
					GrammarAST tmp57_AST_in = (GrammarAST)_t;
					match(_t,ARG);
					_t = _t.getFirstChild();
					arg = (GrammarAST)_t;
					match(_t,ID);
					_t = _t.getNextSibling();
					out(arg.getText()+"=");
					a = (GrammarAST)_t;
					match(_t,ACTION);
					_t = _t.getNextSibling();
					out(a.getText());
					_t = __t96;
					_t = _t.getNextSibling();
				}
				else {
					break _loop97;
				}
				
			} while (true);
			}
			out(")");
			_t = __t94;
			_t = _t.getNextSibling();
			{
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case DOUBLE_QUOTE_STRING_LITERAL:
			{
				GrammarAST tmp58_AST_in = (GrammarAST)_t;
				match(_t,DOUBLE_QUOTE_STRING_LITERAL);
				_t = _t.getNextSibling();
				out(" "+tmp58_AST_in.getText());
				break;
			}
			case DOUBLE_ANGLE_STRING_LITERAL:
			{
				GrammarAST tmp59_AST_in = (GrammarAST)_t;
				match(_t,DOUBLE_ANGLE_STRING_LITERAL);
				_t = _t.getNextSibling();
				out(" "+tmp59_AST_in.getText());
				break;
			}
			case 3:
			{
				break;
			}
			default:
			{
				throw new NoViableAltException(_t);
			}
			}
			}
			_t = __t92;
			_t = _t.getNextSibling();
		}
		catch (RecognitionException ex) {
			reportError(ex);
			if (_t!=null) {_t = _t.getNextSibling();}
		}
		_retTree = _t;
	}
	
	public final void atom(AST _t) throws RecognitionException {
		
		GrammarAST atom_AST_in = (_t == ASTNULL) ? null : (GrammarAST)_t;
		GrammarAST rarg = null;
		GrammarAST targ = null;
		out(" ");
		
		try {      // for error handling
			if (_t==null) _t=ASTNULL;
			switch ( _t.getType()) {
			case STRING_LITERAL:
			case CHAR_LITERAL:
			case TOKEN_REF:
			case RULE_REF:
			case WILDCARD:
			{
				{
				if (_t==null) _t=ASTNULL;
				switch ( _t.getType()) {
				case RULE_REF:
				{
					AST __t121 = _t;
					GrammarAST tmp60_AST_in = (GrammarAST)_t;
					match(_t,RULE_REF);
					_t = _t.getFirstChild();
					out(atom_AST_in.toString());
					{
					if (_t==null) _t=ASTNULL;
					switch ( _t.getType()) {
					case ARG_ACTION:
					{
						rarg = (GrammarAST)_t;
						match(_t,ARG_ACTION);
						_t = _t.getNextSibling();
						out("["+rarg.toString()+"]");
						break;
					}
					case 3:
					case BANG:
					case ROOT:
					case RULEROOT:
					{
						break;
					}