1// 2// ANTLRStringStreamTest.m 3// ANTLR 4// 5// Created by Ian Michell on 12/05/2010. 6// Copyright 2010 Ian Michell. All rights reserved. 7// 8 9#import "ANTLRStringStreamTest.h" 10#import "CharStream.h" 11#import "ANTLRStringStream.h" 12#import "ANTLRError.h" 13 14@implementation ANTLRStringStreamTest 15 16-(void) testInitWithInput 17{ 18 NSString *input = @"This is a string used for ANTLRStringStream input ;)"; 19 ANTLRStringStream *stream = [ANTLRStringStream newANTLRStringStream:input]; 20 NSString *subString = [stream substring:0 To:10]; 21 NSLog(@"The first ten chars are '%@'", subString); 22 STAssertTrue([@"This is a " isEqualToString:subString], @"The strings do not match"); 23 [stream release]; 24} 25 26-(void) testConsumeAndReset 27{ 28 ANTLRStringStream *stream = [ANTLRStringStream newANTLRStringStream:@"This is a string used for input"]; 29 [stream consume]; 30 STAssertTrue(stream.index > 0, @"Index should be greater than 0 after consume"); 31 [stream reset]; 32 STAssertTrue(stream.index == 0, @"Index should be 0 after reset"); 33 [stream release]; 34} 35 36-(void) testConsumeWithNewLine 37{ 38 ANTLRStringStream *stream = [ANTLRStringStream newANTLRStringStream:@"This is a string\nused for input"]; 39 while (stream.index < [stream size] && stream.line == 1) 40 { 41 [stream consume]; 42 } 43 STAssertTrue(stream.line == 2, @"Line number is incorrect, should be 2, was %d!", stream.line); 44 STAssertTrue(stream.charPositionInLine == 0, @"Char position in line should be 0, it was: %d!", stream.charPositionInLine); 45 [stream release]; 46} 47 48-(void) testLAEOF 49{ 50 NSInteger i; 51 ANTLRStringStream *stream = [ANTLRStringStream newANTLRStringStream:@"This is a string\nused for input"]; 52 BOOL eofFound = NO; 53 for (i = 1; i <= [stream size]+1; i++) { 54 NSInteger r = [stream LA:i]; 55 if (r == (NSInteger)CharStreamEOF) { 56 eofFound = YES; 57 break; 58 } 59 } 60 STAssertTrue(eofFound, @"EOF Was not found in stream, Length =%d, index = %d, i = %d", [stream size], stream.index, i); 61 [stream release]; 62} 63 64-(void) testLTEOF 65{ 66 NSInteger i; 67 ANTLRStringStream *stream = [ANTLRStringStream newANTLRStringStream:@"This is a string\nused for input"]; 68 BOOL eofFound = NO; 69 for ( i = 1; i <= [stream size]+1; i++) { 70 NSInteger r = [stream LT:i]; 71 if (r == (NSInteger)CharStreamEOF) { 72 eofFound = YES; 73 break; 74 } 75 } 76 STAssertTrue(eofFound, @"EOF Was not found in stream, Length =%d, index = %d, i = %d", [stream size], stream.index, i); 77 [stream release]; 78} 79 80-(void) testSeek 81{ 82 ANTLRStringStream *stream =[ANTLRStringStream newANTLRStringStream:@"This is a string used for input"]; 83 [stream seek:10]; 84 STAssertTrue(stream.index == 10, @"Index should be 10"); 85 // Get char 10 which is s (with 0 being T) 86 STAssertTrue([stream LA:1] > -1 && (char)[stream LA:1] == 's', @"Char returned should be s"); 87 [stream release]; 88} 89 90-(void) testSeekMarkAndRewind 91{ 92 ANTLRStringStream *stream =[ANTLRStringStream newANTLRStringStream:@"This is a string used for input"]; 93 [stream mark]; 94 [stream seek:10]; 95 STAssertTrue(stream.index == 10, @"Index should be 10"); 96 [stream rewind]; 97 STAssertTrue(stream.index == 0, @"Index should be 0"); 98 [stream seek:5]; 99 STAssertTrue(stream.index == 5, @"Index should be 5"); 100 [stream mark]; // make a new marker to test a branch. 101 [stream seek:10]; 102 STAssertTrue(stream.index == 10, @"Index should be 10"); 103 [stream rewind]; // should be marked to 5. 104 STAssertTrue(stream.index == 5, @"Index should be 5"); 105 [stream release]; 106} 107 108@end 109