actiontranslatorlexer.java

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

              			st.setAttribute("attr", scope.getAttribute(y.getText()));
              			st.setAttribute("expr", translateAction(expr.getText()));
              		}
              		else { // must be return value
              			st = template("returnSetAttributeRef");
              			st.setAttribute("ruleDescriptor", enclosingRule);
              			st.setAttribute("attr", scope.getAttribute(y.getText()));
              			st.setAttribute("expr", translateAction(expr.getText()));
              		}
              		
            }

            }


            if ( backtracking==1 ) {

                      if ( token==null && ruleNestingLevel==1 ) {
                          emit(_type,_line,_charPosition,_channel,_start,getCharIndex()-1);
                      }

                      
            }    }
        finally {
            ruleNestingLevel--;
        }
    }
    // $ANTLR end SET_ENCLOSING_RULE_SCOPE_ATTR

    // $ANTLR start ENCLOSING_RULE_SCOPE_ATTR
    public void mENCLOSING_RULE_SCOPE_ATTR() throws RecognitionException {
        try {
            ruleNestingLevel++;
            int _type = ENCLOSING_RULE_SCOPE_ATTR;
            int _start = getCharIndex();
            int _line = getLine();
            int _charPosition = getCharPositionInLine();
            int _channel = Token.DEFAULT_CHANNEL;
            // ActionTranslator.g:246:4: ( '$' x= ID '.' y= ID {...}?)
            // ActionTranslator.g:246:4: '$' x= ID '.' y= ID {...}?
            {
            match('$'); if (failed) return ;
            int xStart = getCharIndex();
            mID(); if (failed) return ;
            Token x = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, xStart, getCharIndex()-1);
            match('.'); if (failed) return ;
            int yStart = getCharIndex();
            mID(); if (failed) return ;
            Token y = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, yStart, getCharIndex()-1);
            if ( !(enclosingRule!=null &&
            	                         x.getText().equals(enclosingRule.name) &&
            	                         enclosingRule.getLocalAttributeScope(y.getText())!=null) ) {
                if (backtracking>0) {failed=true; return ;}
                throw new FailedPredicateException(input, "ENCLOSING_RULE_SCOPE_ATTR", "enclosingRule!=null &&\n\t                         $x.text.equals(enclosingRule.name) &&\n\t                         enclosingRule.getLocalAttributeScope($y.text)!=null");
            }
            if ( backtracking==1 ) {

              		StringTemplate st = null;
              		AttributeScope scope = enclosingRule.getLocalAttributeScope(y.getText());
              		if ( scope.isPredefinedRuleScope ) {
              			st = template("rulePropertyRef_"+y.getText());
              			grammar.referenceRuleLabelPredefinedAttribute(x.getText());
              			st.setAttribute("scope", x.getText());
              			st.setAttribute("attr", y.getText());
              		}
              	    else if ( scope.isPredefinedLexerRuleScope ) {
              	    	// perhaps not the most precise error message to use, but...
              			ErrorManager.grammarError(ErrorManager.MSG_RULE_HAS_NO_ARGS,
              									  grammar,
              									  actionToken,
              									  x.getText());
              	    }
              		else if ( scope.isParameterScope ) {
              			st = template("parameterAttributeRef");
              			st.setAttribute("attr", scope.getAttribute(y.getText()));
              		}
              		else { // must be return value
              			st = template("returnAttributeRef");
              			st.setAttribute("ruleDescriptor", enclosingRule);
              			st.setAttribute("attr", scope.getAttribute(y.getText()));
              		}
              		
            }

            }


            if ( backtracking==1 ) {

                      if ( token==null && ruleNestingLevel==1 ) {
                          emit(_type,_line,_charPosition,_channel,_start,getCharIndex()-1);
                      }

                      
            }    }
        finally {
            ruleNestingLevel--;
        }
    }
    // $ANTLR end ENCLOSING_RULE_SCOPE_ATTR

    // $ANTLR start SET_TOKEN_SCOPE_ATTR
    public void mSET_TOKEN_SCOPE_ATTR() throws RecognitionException {
        try {
            ruleNestingLevel++;
            int _type = SET_TOKEN_SCOPE_ATTR;
            int _start = getCharIndex();
            int _line = getLine();
            int _charPosition = getCharPositionInLine();
            int _channel = Token.DEFAULT_CHANNEL;
            // ActionTranslator.g:280:4: ( '$' x= ID '.' y= ID ( WS )? '=' {...}?)
            // ActionTranslator.g:280:4: '$' x= ID '.' y= ID ( WS )? '=' {...}?
            {
            match('$'); if (failed) return ;
            int xStart = getCharIndex();
            mID(); if (failed) return ;
            Token x = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, xStart, getCharIndex()-1);
            match('.'); if (failed) return ;
            int yStart = getCharIndex();
            mID(); if (failed) return ;
            Token y = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, yStart, getCharIndex()-1);
            // ActionTranslator.g:280:22: ( WS )?
            int alt2=2;
            int LA2_0 = input.LA(1);
            if ( ((LA2_0>='\t' && LA2_0<='\n')||LA2_0==' ') ) {
                alt2=1;
            }
            switch (alt2) {
                case 1 :
                    // ActionTranslator.g:280:22: WS
                    {
                    mWS(); if (failed) return ;

                    }
                    break;

            }

            match('='); if (failed) return ;
            if ( !(enclosingRule!=null && input.LA(1)!='=' &&
            	                         (enclosingRule.getTokenLabel(x.getText())!=null||
            	                          isTokenRefInAlt(x.getText())) &&
            	                         AttributeScope.tokenScope.getAttribute(y.getText())!=null) ) {
                if (backtracking>0) {failed=true; return ;}
                throw new FailedPredicateException(input, "SET_TOKEN_SCOPE_ATTR", "enclosingRule!=null && input.LA(1)!='=' &&\n\t                         (enclosingRule.getTokenLabel($x.text)!=null||\n\t                          isTokenRefInAlt($x.text)) &&\n\t                         AttributeScope.tokenScope.getAttribute($y.text)!=null");
            }
            if ( backtracking==1 ) {

              		ErrorManager.grammarError(ErrorManager.MSG_WRITE_TO_READONLY_ATTR,
              								  grammar,
              								  actionToken,
              								  x.getText(),
              								  y.getText());
              		
            }

            }


            if ( backtracking==1 ) {

                      if ( token==null && ruleNestingLevel==1 ) {
                          emit(_type,_line,_charPosition,_channel,_start,getCharIndex()-1);
                      }

                      
            }    }
        finally {
            ruleNestingLevel--;
        }
    }
    // $ANTLR end SET_TOKEN_SCOPE_ATTR

    // $ANTLR start TOKEN_SCOPE_ATTR
    public void mTOKEN_SCOPE_ATTR() throws RecognitionException {
        try {
            ruleNestingLevel++;
            int _type = TOKEN_SCOPE_ATTR;
            int _start = getCharIndex();
            int _line = getLine();
            int _charPosition = getCharPositionInLine();
            int _channel = Token.DEFAULT_CHANNEL;
            // ActionTranslator.g:299:4: ( '$' x= ID '.' y= ID {...}?)
            // ActionTranslator.g:299:4: '$' x= ID '.' y= ID {...}?
            {
            match('$'); if (failed) return ;
            int xStart = getCharIndex();
            mID(); if (failed) return ;
            Token x = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, xStart, getCharIndex()-1);
            match('.'); if (failed) return ;
            int yStart = getCharIndex();
            mID(); if (failed) return ;
            Token y = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, yStart, getCharIndex()-1);
            if ( !(enclosingRule!=null &&
            	                         (enclosingRule.getTokenLabel(x.getText())!=null||
            	                          isTokenRefInAlt(x.getText())) &&
            	                         AttributeScope.tokenScope.getAttribute(y.getText())!=null &&
            	                         (grammar.type!=Grammar.LEXER ||
            	                         getElementLabel(x.getText()).elementRef.token.getType()==ANTLRParser.TOKEN_REF ||
            	                         getElementLabel(x.getText()).elementRef.token.getType()==ANTLRParser.STRING_LITERAL)) ) {
                if (backtracking>0) {failed=true; return ;}
                throw new FailedPredicateException(input, "TOKEN_SCOPE_ATTR", "enclosingRule!=null &&\n\t                         (enclosingRule.getTokenLabel($x.text)!=null||\n\t                          isTokenRefInAlt($x.text)) &&\n\t                         AttributeScope.tokenScope.getAttribute($y.text)!=null &&\n\t                         (grammar.type!=Grammar.LEXER ||\n\t                         getElementLabel($x.text).elementRef.token.getType()==ANTLRParser.TOKEN_REF ||\n\t                         getElementLabel($x.text).elementRef.token.getType()==ANTLRParser.STRING_LITERAL)");
            }
            if ( backtracking==1 ) {

              		String label = x.getText();
              		if ( enclosingRule.getTokenLabel(x.getText())==null ) {
              			// $tokenref.attr  gotta get old label or compute new one
              			checkElementRefUniqueness(x.getText(), true);
              			label = enclosingRule.getElementLabel(x.getText(), outerAltNum, generator);
              			if ( label==null ) {
              				ErrorManager.grammarError(ErrorManager.MSG_FORWARD_ELEMENT_REF,
              										  grammar,
              										  actionToken,
              										  "$"+x.getText()+"."+y.getText());
              				label = x.getText();
              			}
              		}
              		StringTemplate st = template("tokenLabelPropertyRef_"+y.getText());
              		st.setAttribute("scope", label);
              		st.setAttribute("attr", AttributeScope.tokenScope.getAttribute(y.getText()));
              		
            }

            }


            if ( backtracking==1 ) {

                      if ( token==null && ruleNestingLevel==1 ) {
                          emit(_type,_line,_charPosition,_channel,_start,getCharIndex()-1);
                      }

                      
            }    }
        finally {
            ruleNestingLevel--;
        }
    }
    // $ANTLR end TOKEN_SCOPE_ATTR

    // $ANTLR start SET_RULE_SCOPE_ATTR
    public void mSET_RULE_SCOPE_ATTR() throws RecognitionException {
        try {
            ruleNestingLevel++;
            int _type = SET_RULE_SCOPE_ATTR;
            int _start = getCharIndex();
            int _line = getLine();
            int _charPosition = getCharPositionInLine();
            int _channel = Token.DEFAULT_CHANNEL;

            Grammar.LabelElementPair pair=null;
            String refdRuleName=null;

            // ActionTranslator.g:337:4: ( '$' x= ID '.' y= ID ( WS )? '=' {...}?{...}?)
            // ActionTranslator.g:337:4: '$' x= ID '.' y= ID ( WS )? '=' {...}?{...}?
            {
            match('$'); if (failed) return ;
            int xStart = getCharIndex();
            mID(); if (failed) return ;
            Token x = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, xStart, getCharIndex()-1);
            match('.'); if (failed) return ;
            int yStart = getCharIndex();
            mID(); if (failed) return ;
            Token y = new CommonToken(input, Token.INVALID_TOKEN_TYPE, Token.DEFAULT_CHANNEL, yStart, getCharIndex()-1);
            // ActionTranslator.g:337:22: ( WS )?
            int alt3=2;
            int LA3_0 = input.LA(1);
            if ( ((LA3_0>='\t' && LA3_0<='\n')||LA3_0==' ') ) {
                alt3=1;
            }
            switch (alt3) {
                case 1 :
                    // ActionTranslator.g:337:22: WS
                    {
                    mWS(); if (failed) return ;

                    }
                    break;

            }

            match('='); if (failed) return ;
            if ( !(enclosingRule!=null && input.LA(1)!='=') ) {
                if (backtracking>0) {failed=true; return ;}
                throw new FailedPredicateException(input, "SET_RULE_SCOPE_ATTR", "enclosingRule!=null && input.LA(1)!='='");
            }
            if ( backtracking==1 ) {

              		pair = enclosingRule.getRuleLabel(x.getText());
              		refdRuleName = x.getText();
              		if ( pair!=null ) {
              			refdRuleName = pair.referencedRuleName;
              		}
              		
            }
            if ( !((enclosingRule.getRuleLabel(x.getText())!=null || isRuleRefInAlt(x.getText())) &&
            	      getRuleLabelAttribute(enclosingRule.getRuleLabel(x.getText())!=null?enclosingRule.getRuleLabel(x.getText()).referencedRuleName:x.getText(),y.getText())!=null) ) {
                if (backtracking>0) {failed=true; return ;}
                throw new FailedPredicateException(input, "SET_RULE_SCOPE_ATTR", "(enclosingRule.getRuleLabel($x.text)!=null || isRuleRefInAlt($x.text)) &&\n\t      getRuleLabelAttribute(enclosingRule.getRuleLabel($x.text)!=null?enclosingRule.getRuleLabel($x.text).referencedRuleName:$x.text,$y.text)!=null");
            }
            if ( backtracking==1 ) {

              		ErrorManager.grammarError(ErrorManager.MSG_WRITE_TO_READONLY_ATTR,
              								  grammar,
              								  actionToken,
              								  x.getText(),
              								  y.getText());
              		
            }

            }


            if ( backtracking==1 ) {

                      if ( token==null && ruleNestingLevel==1 ) {
                          emit(_type,_line,_charPosition,_channel,_start,getCharIndex()-1);
                      }

                      
            }    }
        finally {
            ruleNestingLevel--;
        }
    }