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//
// TestRigHelpers.m
// ScriptConverter
//
// Created by Jens Ayton on 2009-03-13.
// Copyright 2009 Jens Ayton. All rights reserved.
//
#import "TestRigHelpers.h"
@implementation NSString (TestRigHelpers)
- (NSString *)escapedForJavaScriptLiteral
{
NSMutableString *result = nil;
unsigned i, length;
unichar c;
NSAutoreleasePool *pool = nil;
length = [self length];
result = [NSMutableString stringWithCapacity:[self length]];
// Not hugely efficient.
pool = [[NSAutoreleasePool alloc] init];
for (i = 0; i != length; ++i)
{
c = [self characterAtIndex:i];
switch (c)
{
case '\\':
[result appendString:@"\\\\"];
break;
case '\b':
[result appendString:@"\\b"];
break;
case '\f':
[result appendString:@"\\f"];
break;
case '\n':
[result appendString:@"\\n"];
break;
case '\r':
[result appendString:@"\\r"];
break;
case '\t':
[result appendString:@"\\t"];
break;
case '\v':
[result appendString:@"\\v"];
break;
case '\'':
[result appendString:@"\\\'"];
break;
case '\"':
[result appendString:@"\\\""];
break;
default:
[result appendString:[NSString stringWithCharacters:&c length:1]];
}
}
[pool release];
return result;
}
- (BOOL) isJavaScriptIdentifier
{
static NSCharacterSet *notIdentifierCharSet = nil;
unichar first;
if (notIdentifierCharSet == nil)
{
notIdentifierCharSet = [[NSCharacterSet characterSetWithCharactersInString:@"_0123456789QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm$"] invertedSet];
[notIdentifierCharSet retain];
}
if ([self length] == 0) return NO;
// Identifiers may not start with a digit.
first = [self characterAtIndex:0];
if ('0' <= first && first <= '9') return NO;
// Look for any non-identifier char.
if ([self rangeOfCharacterFromSet:notIdentifierCharSet].location != NSNotFound) return NO;
return YES;
}
static NSSet *KeywordList(void)
{
NSString *kKeywords[] =
{
@"break",
@"continue",
@"do",
@"for",
@"import",
@"new",
@"this",
@"void",
@"case",
@"default",
@"else",
@"function",
@"in",
@"return",
@"typeof",
@"while",
@"comment",
@"delete",
@"export",
@"if",
@"label",
@"switch",
@"var",
@"with",
@"abstract",
@"implements",
@"protected",
@"boolean",
@"instanceof",
@"public",
@"byte",
@"int",
@"short",
@"char",
@"interface",
@"static",
@"double",
@"long",
@"synchronized",
@"false",
@"native",
@"throws",
@"final",
@"null",
@"transient",
@"float",
@"package",
@"true",
@"goto",
@"private",
@"catch",
@"enum",
@"throw",
@"class",
@"extends",
@"try",
@"const",
@"finally",
@"debugger",
@"super"
};
return [NSSet setWithObjects:kKeywords count:sizeof kKeywords / sizeof *kKeywords];
}
- (BOOL) isJavaScriptKeyword
{
static NSSet *keywords = nil;
if (keywords == nil) keywords = [KeywordList() retain];
return [keywords containsObject:self];
}
@end
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