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Add CSS Input Stream class

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http://www.w3.org/TR/2013/WD-css-syntax-3-20131105/#tokenizing-and-parsing
This commit is contained in:
iska
2015-06-15 22:06:26 +02:00
parent a54cae8829
commit c4aacfae2b
3 changed files with 98 additions and 0 deletions
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HTMLKit.xcodeproj/project.pbxproj
+10
View File
@@ -114,6 +114,9 @@
624B28C41B04190D0048D328 /* NSCharacterSet+HTMLKit.h in Headers */ = {isa = PBXBuildFile; fileRef = 624B28C21B04190D0048D328 /* NSCharacterSet+HTMLKit.h */; };
624B28C51B04190D0048D328 /* NSCharacterSet+HTMLKit.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B28C31B04190D0048D328 /* NSCharacterSet+HTMLKit.m */; };
624B28C61B04190D0048D328 /* NSCharacterSet+HTMLKit.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B28C31B04190D0048D328 /* NSCharacterSet+HTMLKit.m */; };
624B371E1B24E9BA0010BDDF /* CSSInputStream.h in Headers */ = {isa = PBXBuildFile; fileRef = 624B371C1B24E9BA0010BDDF /* CSSInputStream.h */; };
624B371F1B24E9BA0010BDDF /* CSSInputStream.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B371D1B24E9BA0010BDDF /* CSSInputStream.m */; };
624B37201B24E9BA0010BDDF /* CSSInputStream.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B371D1B24E9BA0010BDDF /* CSSInputStream.m */; };
624B9FB21AE0313300646C4C /* HTMLKitStringCategoryTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B9FB11AE0313300646C4C /* HTMLKitStringCategoryTests.m */; };
624B9FB31AE0313300646C4C /* HTMLKitStringCategoryTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B9FB11AE0313300646C4C /* HTMLKitStringCategoryTests.m */; };
624B9FB51AE0391400646C4C /* HTMLKitOrderedDictionaryTests.m in Sources */ = {isa = PBXBuildFile; fileRef = 624B9FB41AE0391400646C4C /* HTMLKitOrderedDictionaryTests.m */; };
@@ -280,6 +283,8 @@
624B28BE1B0413200048D328 /* CSSAttributeSelector.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = CSSAttributeSelector.m; sourceTree = "<group>"; };
624B28C21B04190D0048D328 /* NSCharacterSet+HTMLKit.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "NSCharacterSet+HTMLKit.h"; sourceTree = "<group>"; };
624B28C31B04190D0048D328 /* NSCharacterSet+HTMLKit.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = "NSCharacterSet+HTMLKit.m"; sourceTree = "<group>"; };
624B371C1B24E9BA0010BDDF /* CSSInputStream.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CSSInputStream.h; sourceTree = "<group>"; };
624B371D1B24E9BA0010BDDF /* CSSInputStream.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = CSSInputStream.m; sourceTree = "<group>"; };
624B9FB11AE0313300646C4C /* HTMLKitStringCategoryTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = HTMLKitStringCategoryTests.m; sourceTree = "<group>"; };
624B9FB41AE0391400646C4C /* HTMLKitOrderedDictionaryTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = HTMLKitOrderedDictionaryTests.m; sourceTree = "<group>"; };
624FC3791AE591D80015DDF9 /* HTMLKitNodesTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = HTMLKitNodesTests.m; sourceTree = "<group>"; };
@@ -370,6 +375,8 @@
isa = PBXGroup;
children = (
624AB3151B04EA4200F3830D /* CSSSelectors.h */,
624B371C1B24E9BA0010BDDF /* CSSInputStream.h */,
624B371D1B24E9BA0010BDDF /* CSSInputStream.m */,
623F13A81AFC11D900C90BF4 /* CSSTokenizer.h */,
623F13A91AFC11D900C90BF4 /* CSSTokenizer.m */,
62491C461AFE51F100ACF9E2 /* CSSLexer.h */,
@@ -660,6 +667,7 @@
624AC8FF19FBF59800BD3C4A /* HTMLTokens.h in Headers */,
62AE594419F992F30043F069 /* HTMLCommentToken.h in Headers */,
624493AC19CD0CBE00BCDDF4 /* HTMLToken.h in Headers */,
624B371E1B24E9BA0010BDDF /* CSSInputStream.h in Headers */,
6235CEA01AA5170A0026937B /* HTMLMarker.h in Headers */,
624AB31E1B05373600F3830D /* CSSSimpleSequence.h in Headers */,
62F31FDD19E9DCCF007F0657 /* HTMLTokenizerEntities.h in Headers */,
@@ -850,6 +858,7 @@
6234248A1AB467B200726190 /* HTMLOrderedDictionary.m in Sources */,
624717BE1B22009200B38302 /* HTMLTreeWalker.m in Sources */,
62AE594119F9907C0043F069 /* HTMLTagToken.m in Sources */,
624B37201B24E9BA0010BDDF /* CSSInputStream.m in Sources */,
62AE594619F992F30043F069 /* HTMLCommentToken.m in Sources */,
62363C3F1ABE428200DAB4C6 /* HTMLListOfActiveFormattingElements.m in Sources */,
62AE593C19F97E1C0043F069 /* HTMLDOCTYPEToken.m in Sources */,
@@ -915,6 +924,7 @@
623424891AB467B200726190 /* HTMLOrderedDictionary.m in Sources */,
624717BD1B22009200B38302 /* HTMLTreeWalker.m in Sources */,
62AE594019F9907C0043F069 /* HTMLTagToken.m in Sources */,
624B371F1B24E9BA0010BDDF /* CSSInputStream.m in Sources */,
62AE594519F992F30043F069 /* HTMLCommentToken.m in Sources */,
62363C3E1ABE428200DAB4C6 /* HTMLListOfActiveFormattingElements.m in Sources */,
62AE593B19F97E1C0043F069 /* HTMLDOCTYPEToken.m in Sources */,
HTMLKit/CSSInputStream.h
+23
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@@ -0,0 +1,23 @@
//
// CSSInputStream.h
// HTMLKit
//
// Created by Iska on 07/06/15.
// Copyright (c) 2015 BrainCookie. All rights reserved.
//
#import <Foundation/Foundation.h>
@interface CSSInputStream : NSObject
@property (nonatomic, readonly) NSUInteger location;
- (instancetype)initWithString:(NSString *)string;
- (UTF32Char)currentCodePoint;
- (UTF32Char)nextCodePoint;
- (UTF32Char)nextCodePointAtOffset:(NSUInteger)offset;
- (UTF32Char)consumeNextCodePoint;
- (void)reconsumeCurrentCodePoint;
@end
HTMLKit/CSSInputStream.m
+65
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@@ -0,0 +1,65 @@
//
// CSSInputStream.m
// HTMLKit
//
// Created by Iska on 07/06/15.
// Copyright (c) 2015 BrainCookie. All rights reserved.
//
#import "CSSInputStream.h"
@interface CSSInputStream ()
{
CFStringInlineBuffer _buffer;
NSUInteger _location;
UTF32Char _currentCodePoint;
}
@end
@implementation CSSInputStream
@synthesize location = _location;
- (instancetype)initWithString:(NSString *)string
{
self = [super init];
if (self) {
CFStringInitInlineBuffer((CFStringRef)string, &_buffer, CFRangeMake(0, string.length));
_location = 0;
_currentCodePoint = 0;
}
return self;
}
- (UTF32Char)currentCodePoint
{
return _currentCodePoint;
}
- (UTF32Char)nextCodePointAtOffset:(NSUInteger)offset;
{
UTF32Char codePoint = CFStringGetCharacterFromInlineBuffer(&_buffer, _location + offset);
return codePoint;
}
- (UTF32Char)nextCodePoint
{
return [self nextCodePointAtOffset:0];
}
- (UTF32Char)consumeNextCodePoint
{
UTF32Char codePoint = [self nextCodePoint];
_currentCodePoint = codePoint;
if (codePoint != 0) {
_location++;
}
return codePoint;
}
- (void)reconsumeCurrentCodePoint
{
_location = _location - 1;
}
@end