/** \file * This OBJC source file was generated by $ANTLR version 3.4 * * - From the grammar source file : /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g * - On : 2012-02-16 17:34:26 * - for the parser : TParserParser * * Editing it, at least manually, is not wise. * * ObjC language generator and runtime by Alan Condit, acondit|hereisanat|ipns|dotgoeshere|com. * * */ // $ANTLR 3.4 /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g 2012-02-16 17:34:26 /* ----------------------------------------- * Include the ANTLR3 generated header file. */ #import "TParser.h" /* ----------------------------------------- */ /** Demonstrates how semantic predicates get hoisted out of the rule in * which they are found and used in other decisions. This grammar illustrates * how predicates can be used to distinguish between enum as a keyword and * an ID *dynamically*. :) * Run "java org.antlr.Tool -dfa t.g" to generate DOT (graphviz) files. See * the T_dec-1.dot file to see the predicates in action. */ /* ============================================================================= */ /* ============================================================================= * Start of recognizer */ #pragma mark Bitsets static ANTLRBitSet *FOLLOW_identifier_in_stat34; static const unsigned long long FOLLOW_identifier_in_stat34_data[] = { 0x0000000000000002LL}; static ANTLRBitSet *FOLLOW_enumAsKeyword_in_stat47; static const unsigned long long FOLLOW_enumAsKeyword_in_stat47_data[] = { 0x0000000000000002LL}; static ANTLRBitSet *FOLLOW_ID_in_identifier66; static const unsigned long long FOLLOW_ID_in_identifier66_data[] = { 0x0000000000000002LL}; static ANTLRBitSet *FOLLOW_enumAsID_in_identifier74; static const unsigned long long FOLLOW_enumAsID_in_identifier74_data[] = { 0x0000000000000002LL}; static ANTLRBitSet *FOLLOW_7_in_enumAsKeyword89; static const unsigned long long FOLLOW_7_in_enumAsKeyword89_data[] = { 0x0000000000000002LL}; static ANTLRBitSet *FOLLOW_7_in_enumAsID100; static const unsigned long long FOLLOW_7_in_enumAsID100_data[] = { 0x0000000000000002LL}; #pragma mark Dynamic Global globalAttributeScopeImplementation #pragma mark Dynamic Rule Scopes ruleAttributeScopeImplementation #pragma mark Rule Return Scopes returnScopeImplementation @implementation TParser // line 637 /* ObjC start of ruleAttributeScope */ #pragma mark Dynamic Rule Scopes ruleAttributeScope /* ObjC end of ruleAttributeScope */ #pragma mark global Attribute Scopes globalAttributeScope /* ObjC start globalAttributeScope */ /* ObjC end globalAttributeScope */ /* ObjC start actions.(actionScope).synthesize */ /* ObjC start synthesize() */ + (void) initialize { #pragma mark Bitsets FOLLOW_identifier_in_stat34 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_identifier_in_stat34_data Count:(NSUInteger)1] retain]; FOLLOW_enumAsKeyword_in_stat47 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_enumAsKeyword_in_stat47_data Count:(NSUInteger)1] retain]; FOLLOW_ID_in_identifier66 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_ID_in_identifier66_data Count:(NSUInteger)1] retain]; FOLLOW_enumAsID_in_identifier74 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_enumAsID_in_identifier74_data Count:(NSUInteger)1] retain]; FOLLOW_7_in_enumAsKeyword89 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_7_in_enumAsKeyword89_data Count:(NSUInteger)1] retain]; FOLLOW_7_in_enumAsID100 = [[ANTLRBitSet newBitSetWithBits:(const unsigned long long *)FOLLOW_7_in_enumAsID100_data Count:(NSUInteger)1] retain]; [BaseRecognizer setTokenNames:[[AMutableArray arrayWithObjects:@"", @"", @"", @"", @"ID", @"INT", @"WS", @"'enum'", nil] retain]]; [BaseRecognizer setGrammarFileName:@"/Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g"]; } + (TParser *)newTParser:(id)aStream { return [[TParser alloc] initWithTokenStream:aStream]; } - (id) initWithTokenStream:(id)aStream { self = [super initWithTokenStream:aStream State:[[RecognizerSharedState newRecognizerSharedStateWithRuleLen:4+1] retain]]; if ( self != nil ) { /* start of actions-actionScope-init */ enableEnum = NO; /* start of init */ } return self; } - (void) dealloc { [super dealloc]; } /* ObjC start actions.(actionScope).methods */ /* ObjC end actions.(actionScope).methods */ /* ObjC start methods() */ /* ObjC end methods() */ /* ObjC start rules */ /* * $ANTLR start stat * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:24:1: stat : ( identifier | enumAsKeyword ); */ - (void) stat { /* ruleScopeSetUp */ /* ruleDeclarations */ @try { /* ruleLabelDefs entry */ // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:24:5: ( identifier | enumAsKeyword ) //ruleblock NSInteger alt1=2; NSInteger LA1_0 = [input LA:1]; if ( (LA1_0==ID) ) { alt1=1; } else if ( (LA1_0==7) ) { NSInteger LA1_2 = [input LA:2]; if ( ((!enableEnum)) ) { alt1=1; } else if ( ((enableEnum)) ) { alt1=2; } else { NoViableAltException *nvae = [NoViableAltException newException:1 state:2 stream:input]; nvae.c = LA1_2; @throw nvae; } } else { NoViableAltException *nvae = [NoViableAltException newException:1 state:0 stream:input]; nvae.c = LA1_0; @throw nvae; } switch (alt1) { case 1 : ; // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:24:7: identifier // alt { /* ruleRef */ [self pushFollow:FOLLOW_identifier_in_stat34]; [self identifier]; [self popFollow]; NSLog(@"enum is an ID"); } break; case 2 : ; // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:25:7: enumAsKeyword // alt { /* ruleRef */ [self pushFollow:FOLLOW_enumAsKeyword_in_stat47]; [self enumAsKeyword]; [self popFollow]; NSLog(@"enum is a keyword"); } break; } /* token+rule list labels */ } @catch (RecognitionException *re) { [self reportError:re]; [self recover:input Exception:re]; } @finally { /* ruleScopeCleanUp */ } return ; } /* $ANTLR end stat */ /* * $ANTLR start identifier * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:28:1: identifier : ( ID | enumAsID ); */ - (void) identifier { /* ruleScopeSetUp */ /* ruleDeclarations */ @try { /* ruleLabelDefs entry */ // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:29:5: ( ID | enumAsID ) //ruleblock NSInteger alt2=2; NSInteger LA2_0 = [input LA:1]; if ( (LA2_0==ID) ) { alt2=1; } else if ( (LA2_0==7) ) { alt2=2; } else { NoViableAltException *nvae = [NoViableAltException newException:2 state:0 stream:input]; nvae.c = LA2_0; @throw nvae; } switch (alt2) { case 1 : ; // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:29:7: ID // alt { [self match:input TokenType:ID Follow:FOLLOW_ID_in_identifier66]; } break; case 2 : ; // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:30:7: enumAsID // alt { /* ruleRef */ [self pushFollow:FOLLOW_enumAsID_in_identifier74]; [self enumAsID]; [self popFollow]; } break; } /* token+rule list labels */ } @catch (RecognitionException *re) { [self reportError:re]; [self recover:input Exception:re]; } @finally { /* ruleScopeCleanUp */ } return ; } /* $ANTLR end identifier */ /* * $ANTLR start enumAsKeyword * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:33:1: enumAsKeyword :{...}? 'enum' ; */ - (void) enumAsKeyword { /* ruleScopeSetUp */ /* ruleDeclarations */ @try { /* ruleLabelDefs entry */ // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:33:15: ({...}? 'enum' ) // ruleBlockSingleAlt // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:33:17: {...}? 'enum' // alt { if ( !((enableEnum)) ) { @throw [FailedPredicateException newException:@"enumAsKeyword" predicate:@"enableEnum" stream:input]; } [self match:input TokenType:7 Follow:FOLLOW_7_in_enumAsKeyword89]; } /* token+rule list labels */ } @catch (RecognitionException *re) { [self reportError:re]; [self recover:input Exception:re]; } @finally { /* ruleScopeCleanUp */ } return ; } /* $ANTLR end enumAsKeyword */ /* * $ANTLR start enumAsID * /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:35:1: enumAsID :{...}? 'enum' ; */ - (void) enumAsID { /* ruleScopeSetUp */ /* ruleDeclarations */ @try { /* ruleLabelDefs entry */ // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:35:10: ({...}? 'enum' ) // ruleBlockSingleAlt // /Users/acondit/source/antlr/code/antlr3/runtime/ObjC/Framework/examples/hoistedPredicates/T.g:35:12: {...}? 'enum' // alt { if ( !((!enableEnum)) ) { @throw [FailedPredicateException newException:@"enumAsID" predicate:@"!enableEnum" stream:input]; } [self match:input TokenType:7 Follow:FOLLOW_7_in_enumAsID100]; } /* token+rule list labels */ } @catch (RecognitionException *re) { [self reportError:re]; [self recover:input Exception:re]; } @finally { /* ruleScopeCleanUp */ } return ; } /* $ANTLR end enumAsID */ /* ObjC end rules */ @end /* end of TParser implementation line 692 */