simplecparser.m

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

            ANTLRNoViableAltException *nvae = [ANTLRNoViableAltException exceptionWithDecision:7 state:0 stream:input];
        	@throw nvae;

        	}}
        switch (alt7) {
        	case 1 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:62:7: forStat // alt
        	    {
        	    [following addObject:FOLLOW_forStat_in_stat337];
        	    [self forStat];
        	    [following removeLastObject];



        	    }
        	    break;
        	case 2 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:63:7: expr ';' // alt
        	    {
        	    [following addObject:FOLLOW_expr_in_stat345];
        	    [self expr];
        	    [following removeLastObject];


        	    [self match:input tokenType:7 follow:FOLLOW_7_in_stat347]; 

        	    }
        	    break;
        	case 3 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:64:7: block // alt
        	    {
        	    [following addObject:FOLLOW_block_in_stat361];
        	    [self block];
        	    [following removeLastObject];



        	    }
        	    break;
        	case 4 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:65:7: assignStat ';' // alt
        	    {
        	    [following addObject:FOLLOW_assignStat_in_stat369];
        	    [self assignStat];
        	    [following removeLastObject];


        	    [self match:input tokenType:7 follow:FOLLOW_7_in_stat371]; 

        	    }
        	    break;
        	case 5 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:66:7: ';' // alt
        	    {
        	    [self match:input tokenType:7 follow:FOLLOW_7_in_stat379]; 

        	    }
        	    break;

        }
    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end stat

// $ANTLR start forStat
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:69:1: forStat : 'for' '(' assignStat ';' expr ';' assignStat ')' block ;
- (void) forStat
{
    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:70:9: ( 'for' '(' assignStat ';' expr ';' assignStat ')' block ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:70:9: 'for' '(' assignStat ';' expr ';' assignStat ')' block // alt
        {
        [self match:input tokenType:16 follow:FOLLOW_16_in_forStat398]; 
        [self match:input tokenType:8 follow:FOLLOW_8_in_forStat400]; 
        [following addObject:FOLLOW_assignStat_in_forStat402];
        [self assignStat];
        [following removeLastObject];


        [self match:input tokenType:7 follow:FOLLOW_7_in_forStat404]; 
        [following addObject:FOLLOW_expr_in_forStat406];
        [self expr];
        [following removeLastObject];


        [self match:input tokenType:7 follow:FOLLOW_7_in_forStat408]; 
        [following addObject:FOLLOW_assignStat_in_forStat410];
        [self assignStat];
        [following removeLastObject];


        [self match:input tokenType:10 follow:FOLLOW_10_in_forStat412]; 
        [following addObject:FOLLOW_block_in_forStat414];
        [self block];
        [following removeLastObject];



        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end forStat

// $ANTLR start assignStat
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:73:1: assignStat : ID '=' expr ;
- (void) assignStat
{
    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:74:9: ( ID '=' expr ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:74:9: ID '=' expr // alt
        {
        [self match:input tokenType:SimpleCParser_ID follow:FOLLOW_SimpleCParser_ID_in_assignStat441]; 
        [self match:input tokenType:17 follow:FOLLOW_17_in_assignStat443]; 
        [following addObject:FOLLOW_expr_in_assignStat445];
        [self expr];
        [following removeLastObject];



        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end assignStat

// $ANTLR start expr
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:77:1: expr : condExpr ;
- (void) expr
{
    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:77:9: ( condExpr ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:77:9: condExpr // alt
        {
        [following addObject:FOLLOW_condExpr_in_expr467];
        [self condExpr];
        [following removeLastObject];



        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end expr

// $ANTLR start condExpr
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:80:1: condExpr : aexpr ( ('=='|'<') aexpr )? ;
- (void) condExpr
{
    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:81:9: ( aexpr ( ('=='|'<') aexpr )? ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:81:9: aexpr ( ('=='|'<') aexpr )? // alt
        {
        [following addObject:FOLLOW_aexpr_in_condExpr486];
        [self aexpr];
        [following removeLastObject];


        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:81:15: ( ('=='|'<') aexpr )? // block
        int alt8=2;
        {
        	int LA8_0 = [input LA:1];
        	if ( (LA8_0>=18 && LA8_0<=19) ) {
        		alt8 = 1;
        	}
        }
        switch (alt8) {
        	case 1 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:81:17: ('=='|'<') aexpr // alt
        	    {
        	    if (([input LA:1]>=18 && [input LA:1]<=19)) {
        	    	[input consume];
        	    	errorRecovery = NO;
        	    } else {
        	    	ANTLRMismatchedSetException *mse = [ANTLRMismatchedSetException exceptionWithSet:nil stream:input];
        	    	[self recoverFromMismatchedSet:input exception:mse follow:FOLLOW_set_in_condExpr491];	@throw mse;
        	    }

        	    [following addObject:FOLLOW_aexpr_in_condExpr498];
        	    [self aexpr];
        	    [following removeLastObject];



        	    }
        	    break;

        }


        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end condExpr

// $ANTLR start aexpr
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:84:1: aexpr : atom ( '+' atom )* ;
- (void) aexpr
{
    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:85:9: ( atom ( '+' atom )* ) // ruleBlockSingleAlt
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:85:9: atom ( '+' atom )* // alt
        {
        [following addObject:FOLLOW_atom_in_aexpr520];
        [self atom];
        [following removeLastObject];


        do {
            int alt9=2;
            {
            	int LA9_0 = [input LA:1];
            	if ( LA9_0==20 ) {
            		alt9 = 1;
            	}

            }
            switch (alt9) {
        	case 1 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:85:16: '+' atom // alt
        	    {
        	    [self match:input tokenType:20 follow:FOLLOW_20_in_aexpr524]; 
        	    [following addObject:FOLLOW_atom_in_aexpr526];
        	    [self atom];
        	    [following removeLastObject];



        	    }
        	    break;

        	default :
        	    goto loop9;
            }
        } while (YES); loop9: ;


        }

    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end aexpr

// $ANTLR start atom
// /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:88:1: atom : ( ID | INT | '(' expr ')' );
- (void) atom
{
    @try {
        // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:89:7: ( ID | INT | '(' expr ')' ) //ruleblock
        int alt10=3;
        switch ([input LA:1]) {
        	case SimpleCParser_ID:
        		alt10 = 1;
        		break;
        	case SimpleCParser_INT:
        		alt10 = 2;
        		break;
        	case 8:
        		alt10 = 3;
        		break;
        default:
         {
            ANTLRNoViableAltException *nvae = [ANTLRNoViableAltException exceptionWithDecision:10 state:0 stream:input];
        	@throw nvae;

        	}}
        switch (alt10) {
        	case 1 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:89:7: ID // alt
        	    {
        	    [self match:input tokenType:SimpleCParser_ID follow:FOLLOW_SimpleCParser_ID_in_atom546]; 

        	    }
        	    break;
        	case 2 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:90:7: INT // alt
        	    {
        	    [self match:input tokenType:SimpleCParser_INT follow:FOLLOW_SimpleCParser_INT_in_atom560]; 

        	    }
        	    break;
        	case 3 :
        	    // /Users/kroepke/Projects/antlr3/code/antlr/main/lib/ObjC/Framework/examples/LL-star/SimpleC.g:91:7: '(' expr ')' // alt
        	    {
        	    [self match:input tokenType:8 follow:FOLLOW_8_in_atom574]; 
        	    [following addObject:FOLLOW_expr_in_atom576];
        	    [self expr];
        	    [following removeLastObject];


        	    [self match:input tokenType:10 follow:FOLLOW_10_in_atom578]; 

        	    }
        	    break;

        }
    }
	@catch (ANTLRRecognitionException *re) {
		[self reportError:re];
		[self recover:input exception:re];
	}
	@finally {
		// token labels
		// token+rule list labels
		// rule labels
		// rule refs in alts with rewrites

	}
	return ;
}
// $ANTLR end atom



@end