forked from mz2/Fragaria
/
SMLSyntaxColouring.m
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/
SMLSyntaxColouring.m
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// SMLTextView delegate
/*
MGSFragaria
Written by Jonathan Mitchell, jonathan@mugginsoft.com
Find the latest version at https://github.com/mugginsoft/Fragaria
Smultron version 3.6b1, 2009-09-12
Written by Peter Borg, pgw3@mac.com
Find the latest version at http://smultron.sourceforge.net
Copyright 2004-2009 Peter Borg
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
*/
#import "MGSFragaria.h"
#import "MGSFragariaFramework.h"
// syntax colouring information dictionary keys
NSString *SMLSyntaxGroup = @"group";
NSString *SMLSyntaxGroupID = @"groupID";
NSString *SMLSyntaxWillColour = @"willColour";
NSString *SMLSyntaxAttributes = @"attributes";
NSString *SMLSyntaxInfo = @"syntaxInfo";
// syntax colouring group names
NSString *SMLSyntaxGroupNumber = @"number";
NSString *SMLSyntaxGroupCommand = @"command";
NSString *SMLSyntaxGroupInstruction = @"instruction";
NSString *SMLSyntaxGroupKeyword = @"keyword";
NSString *SMLSyntaxGroupAutoComplete = @"autocomplete";
NSString *SMLSyntaxGroupVariable = @"variable";
NSString *SMLSyntaxGroupFirstString = @"firstString";
NSString *SMLSyntaxGroupSecondString = @"secondString";
NSString *SMLSyntaxGroupAttribute = @"attribute";
NSString *SMLSyntaxGroupSingleLineComment = @"singleLineComment";
NSString *SMLSyntaxGroupMultiLineComment = @"multiLineComment";
NSString *SMLSyntaxGroupSecondStringPass2 = @"secondStringPass2";
// syntax definition dictionary keys
NSString *SMLSyntaxDefinitionAllowSyntaxColouring = @"allowSyntaxColouring";
NSString *SMLSyntaxDefinitionKeywords = @"keywords";
NSString *SMLSyntaxDefinitionAutocompleteWords = @"autocompleteWords";
NSString *SMLSyntaxDefinitionRecolourKeywordIfAlreadyColoured = @"recolourKeywordIfAlreadyColoured";
NSString *SMLSyntaxDefinitionKeywordsCaseSensitive = @"keywordsCaseSensitive";
NSString *SMLSyntaxDefinitionBeginCommand = @"beginCommand";
NSString *SMLSyntaxDefinitionEndCommand = @"endCommand";
NSString *SMLSyntaxDefinitionBeginInstruction = @"beginInstruction";
NSString *SMLSyntaxDefinitionEndInstruction = @"endInstruction";
NSString *SMLSyntaxDefinitionBeginVariable = @"beginVariable";
NSString *SMLSyntaxDefinitionEndVariable = @"endVariable";
NSString *SMLSyntaxDefinitionFirstString = @"firstString";
NSString *SMLSyntaxDefinitionSecondString = @"secondString";
NSString *SMLSyntaxDefinitionFirstSingleLineComment = @"firstSingleLineComment";
NSString *SMLSyntaxDefinitionSecondSingleLineComment = @"secondSingleLineComment";
NSString *SMLSyntaxDefinitionBeginFirstMultiLineComment = @"beginFirstMultiLineComment";
NSString *SMLSyntaxDefinitionEndFirstMultiLineComment = @"endFirstMultiLineComment";
NSString *SMLSyntaxDefinitionBeginSecondMultiLineComment = @"beginSecondMultiLineComment";
NSString *SMLSyntaxDefinitionEndSecondMultiLineComment = @"endSecondMultiLineComment";
NSString *SMLSyntaxDefinitionFunctionDefinition = @"functionDefinition";
NSString *SMLSyntaxDefinitionRemoveFromFunction = @"removeFromFunction";
NSString *SMLSyntaxDefinitionExcludeFromKeywordStartCharacterSet = @"excludeFromKeywordStartCharacterSet";
NSString *SMLSyntaxDefinitionExcludeFromKeywordEndCharacterSet = @"excludeFromKeywordEndCharacterSet";
NSString *SMLSyntaxDefinitionIncludeInKeywordStartCharacterSet = @"includeInKeywordStartCharacterSet";
NSString *SMLSyntaxDefinitionIncludeInKeywordEndCharacterSet = @"includeInKeywordEndCharacterSet";
// class extension
@interface SMLSyntaxColouring()
@property (copy) NSString *functionDefinition;
@property (copy) NSString *removeFromFunction;
@property (retain) NSString *secondString;
@property (retain) NSString *firstString;
@property (retain) NSString *beginCommand;
@property (retain) NSString *endCommand;
@property (retain) NSSet *keywords;
@property (retain) NSSet *autocompleteWords;
@property (retain) NSString *beginInstruction;
@property (retain) NSString *endInstruction;
@property (retain) NSCharacterSet *beginVariableCharacterSet;
@property (retain) NSCharacterSet *endVariableCharacterSet;
@property (retain) NSString *firstSingleLineComment;
@property (retain) NSString *secondSingleLineComment;
@property (retain) NSMutableArray *singleLineComments;
@property (retain) NSMutableArray *multiLineComments;
@property (retain) NSString *beginFirstMultiLineComment;
@property (retain) NSString*endFirstMultiLineComment;
@property (retain) NSString*beginSecondMultiLineComment;
@property (retain) NSString*endSecondMultiLineComment;
@property (retain) NSCharacterSet *keywordStartCharacterSet;
@property (retain) NSCharacterSet *keywordEndCharacterSet;
@property (retain) NSCharacterSet *attributesCharacterSet;
@property (retain) NSCharacterSet *letterCharacterSet;
@property (retain) NSCharacterSet *numberCharacterSet;
@property (retain) NSCharacterSet *nameCharacterSet;
@property (assign) BOOL syntaxDefinitionAllowsColouring;
@property unichar decimalPointCharacter;
- (void)parseSyntaxDictionary:(NSDictionary *)syntaxDictionary;
- (void)applySyntaxDefinition;
- (NSString *)assignSyntaxDefinition;
- (void)performDocumentDelegateSelector:(SEL)selector withObject:(id)object;
- (void)autocompleteWordsTimerSelector:(NSTimer *)theTimer;
- (NSString *)completeString;
- (void)prepareRegularExpressions;
- (void)applyColourDefaults;
- (void)recolourRange:(NSRange)range;
- (void)removeAllColours;
- (void)removeColoursFromRange:(NSRange)range;
- (NSString *)guessSyntaxDefinitionExtensionFromFirstLine:(NSString *)firstLine;
- (void)pageRecolour;
- (void)setColour:(NSDictionary *)colour range:(NSRange)range;
- (void)highlightLineRange:(NSRange)lineRange;
- (void)undoManagerDidUndo:(NSNotification *)aNote;
- (BOOL)isSyntaxColouringRequired;
- (NSDictionary *)syntaxDictionary;
@end
@implementation SMLSyntaxColouring
@synthesize reactToChanges, functionDefinition, removeFromFunction, undoManager, secondString, firstString, keywords, autocompleteWords, keywordsAndAutocompleteWords, beginCommand, endCommand, beginInstruction, endInstruction, beginVariableCharacterSet, endVariableCharacterSet, firstSingleLineComment, secondSingleLineComment, singleLineComments, multiLineComments, beginFirstMultiLineComment, endFirstMultiLineComment, beginSecondMultiLineComment, endSecondMultiLineComment, keywordStartCharacterSet, keywordEndCharacterSet, attributesCharacterSet, letterCharacterSet, numberCharacterSet, decimalPointCharacter, syntaxErrors, syntaxDefinitionAllowsColouring, nameCharacterSet;
#pragma mark -
#pragma mark Instance methods
/*
- init
*/
- (id)init
{
self = [self initWithDocument:nil];
return self;
}
/*
- initWithDocument:
*/
- (id)initWithDocument:(id)theDocument
{
if ((self = [super init])) {
NSAssert(theDocument, @"bad document");
// retain the document
document = [theDocument retain];
self.undoManager = [[[NSUndoManager alloc] init] autorelease];
// configure the document text view
NSTextView *textView = [document valueForKey:ro_MGSFOTextView];
NSAssert([textView isKindOfClass:[NSTextView class]], @"bad textview");
[textView setDelegate:self];
[[textView textStorage] setDelegate:self];
// configure ivars
lastCursorLocation = 0;
lastLineHighlightRange = NSMakeRange(0, 0);
reactToChanges = YES;
// configure layout managers
firstLayoutManager = (SMLLayoutManager *)[textView layoutManager];
// configure colouring
[self applyColourDefaults];
// letter character set
self.letterCharacterSet = [NSCharacterSet letterCharacterSet];
// name character set
NSMutableCharacterSet *temporaryCharacterSet = [[[NSCharacterSet letterCharacterSet] mutableCopy] autorelease];
[temporaryCharacterSet addCharactersInString:@"_"];
self.nameCharacterSet = [[temporaryCharacterSet copy] autorelease];
// keyword start character set
temporaryCharacterSet = [[[NSCharacterSet letterCharacterSet] mutableCopy] autorelease];
[temporaryCharacterSet addCharactersInString:@"_:@#"];
self.keywordStartCharacterSet = [[temporaryCharacterSet copy] autorelease];
// keyword end character set
// see http://www.fileformat.info/info/unicode/category/index.htm for categories that make up the sets
temporaryCharacterSet = [[[NSCharacterSet whitespaceAndNewlineCharacterSet] mutableCopy] autorelease];
[temporaryCharacterSet formUnionWithCharacterSet:[NSCharacterSet symbolCharacterSet]];
[temporaryCharacterSet formUnionWithCharacterSet:[NSCharacterSet punctuationCharacterSet]];
[temporaryCharacterSet removeCharactersInString:@"_-"]; // common separators in variable names
self.keywordEndCharacterSet = [[temporaryCharacterSet copy] autorelease];
// number character set
self.numberCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@"0123456789."];
self.decimalPointCharacter = [@"." characterAtIndex:0];
// attributes character set
temporaryCharacterSet = [[[NSCharacterSet alphanumericCharacterSet] mutableCopy] autorelease];
[temporaryCharacterSet addCharactersInString:@" -"]; // If there are two spaces before an attribute
self.attributesCharacterSet = [[temporaryCharacterSet copy] autorelease];
// configure syntax definition
[self applySyntaxDefinition];
// add undo notification observers
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(undoManagerDidUndo:)
name:@"NSUndoManagerDidUndoChangeNotification"
object:undoManager];
// add document KVO observers
[document addObserver:self forKeyPath:@"syntaxDefinition" options:NSKeyValueObservingOptionNew context:@"syntaxDefinition"];
// add NSUserDefaultsController KVO observers
NSUserDefaultsController *defaultsController = [NSUserDefaultsController sharedUserDefaultsController];
[defaultsController addObserver:self forKeyPath:@"values.FragariaCommandsColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaCommentsColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaInstructionsColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaKeywordsColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaAutocompleteColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaVariablesColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaStringsColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaAttributesColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaNumbersColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourCommands" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourComments" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourInstructions" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourKeywords" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourAutocomplete" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourVariables" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourStrings" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourAttributes" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourNumbers" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourMultiLineStrings" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaOnlyColourTillTheEndOfLine" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaHighlightCurrentLine" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaHighlightLineColourWell" options:NSKeyValueObservingOptionNew context:@"ColoursChanged"];
[defaultsController addObserver:self forKeyPath:@"values.FragariaColourMultiLineStrings" options:NSKeyValueObservingOptionNew context:@"MultiLineChanged"];
}
return self;
}
/*
- dealloc
*/
- (void) dealloc {
[document release];
[super dealloc];
}
#pragma mark -
#pragma mark KVO
/*
- observeValueForKeyPath:ofObject:change:context:
*/
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if ([(NSString *)context isEqualToString:@"ColoursChanged"]) {
[self applyColourDefaults];
[self pageRecolour];
if ([[SMLDefaults valueForKey:MGSFragariaPrefsHighlightCurrentLine] boolValue] == YES) {
NSRange range = [[self completeString] lineRangeForRange:[[document valueForKey:ro_MGSFOTextView] selectedRange]];
[self highlightLineRange:range];
lastLineHighlightRange = range;
} else {
[self highlightLineRange:NSMakeRange(0, 0)];
}
} else if ([(NSString *)context isEqualToString:@"MultiLineChanged"]) {
[self prepareRegularExpressions];
[self pageRecolour];
} else if ([(NSString *)context isEqualToString:@"syntaxDefinition"]) {
[self applySyntaxDefinition];
[self removeAllColours];
[self pageRecolour];
} else {
[super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
}
}
#pragma mark -
#pragma mark Syntax definition handling
/*
- applySyntaxDefinition
*/
- (void)applySyntaxDefinition
{
// parse
[self parseSyntaxDictionary:self.syntaxDictionary];
}
/*
- syntaxDictionary
*/
- (NSDictionary *)syntaxDictionary
{
NSString *definitionName = [document valueForKey:MGSFOSyntaxDefinitionName];
// if document has no syntax definition name then assign one
if (!definitionName) {
definitionName = [self assignSyntaxDefinition];
}
// get syntax dictionary
NSDictionary *syntaxDictionary = [[MGSSyntaxController sharedInstance] syntaxDictionaryWithName:definitionName];
return syntaxDictionary;
}
/*
- assignSyntaxDefinition
*/
- (NSString *)assignSyntaxDefinition
{
NSString *definitionName = [document valueForKey:MGSFOSyntaxDefinitionName];
if (definitionName) return definitionName;
NSString *documentExtension = [[document valueForKey:MGSFODocumentName] pathExtension];
NSString *lowercaseExtension = nil;
// If there is no extension try to guess definition from first line
if ([documentExtension isEqualToString:@""]) {
NSString *string = [[[document valueForKey:ro_MGSFOScrollView] documentView] string];
NSString *firstLine = [string substringWithRange:[string lineRangeForRange:NSMakeRange(0,0)]];
if ([firstLine hasPrefix:@"#!"] || [firstLine hasPrefix:@"%"] || [firstLine hasPrefix:@"<?"]) {
lowercaseExtension = [self guessSyntaxDefinitionExtensionFromFirstLine:firstLine];
}
} else {
lowercaseExtension = [documentExtension lowercaseString];
}
if (lowercaseExtension) {
definitionName = [[MGSSyntaxController sharedInstance] syntaxDefinitionNameWithExtension:lowercaseExtension];
}
if (!definitionName) {
definitionName = [MGSSyntaxController standardSyntaxDefinitionName];
}
// update document definition
[document setValue:definitionName forKey:MGSFOSyntaxDefinitionName];
return definitionName;
}
/*
- parseSyntaxDictionary
*/
- (void)parseSyntaxDictionary:(NSDictionary *)syntaxDictionary
{
NSMutableArray *keywordsAndAutocompleteWordsTemporary = [NSMutableArray array];
// If the plist file is malformed be sure to set the values to something
// syntax colouring
id value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionAllowSyntaxColouring];
if (value) {
NSAssert([value isKindOfClass:[NSNumber class]], @"NSNumber expected");
self.syntaxDefinitionAllowsColouring = [value boolValue];
} else {
// default to YES
self.syntaxDefinitionAllowsColouring = YES;
}
// keywords
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionKeywords];
if (value) {
NSAssert([value isKindOfClass:[NSArray class]], @"NSArray expected");
self.keywords = [[[NSSet alloc] initWithArray:value] autorelease];
[keywordsAndAutocompleteWordsTemporary addObjectsFromArray:value];
}
// autocomplete words
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionAutocompleteWords];
if (value) {
NSAssert([value isKindOfClass:[NSArray class]], @"NSArray expected");
self.autocompleteWords = [[[NSSet alloc] initWithArray:value] autorelease];
[keywordsAndAutocompleteWordsTemporary addObjectsFromArray:value];
}
// colour autocomplete words is a preference
if ([[SMLDefaults valueForKey:MGSFragariaPrefsColourAutocomplete] boolValue] == YES) {
self.keywords = [NSSet setWithArray:keywordsAndAutocompleteWordsTemporary];
}
// keywords and autocomplete words
self.keywordsAndAutocompleteWords = [keywordsAndAutocompleteWordsTemporary sortedArrayUsingSelector:@selector(compare:)];
// recolour keywords
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionRecolourKeywordIfAlreadyColoured];
if (value) {
NSAssert([value isKindOfClass:[NSNumber class]], @"NSNumber expected");
recolourKeywordIfAlreadyColoured = [value boolValue];
}
// keywords case sensitive
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionKeywordsCaseSensitive];
if (value) {
NSAssert([value isKindOfClass:[NSNumber class]], @"NSNumber expected");
keywordsCaseSensitive = [value boolValue];
}
if (keywordsCaseSensitive == NO) {
NSMutableArray *lowerCaseKeywords = [[[NSMutableArray alloc] init] autorelease];
for (id item in keywords) {
[lowerCaseKeywords addObject:[item lowercaseString]];
}
NSSet *lowerCaseKeywordsSet = [[[NSSet alloc] initWithArray:lowerCaseKeywords] autorelease];
self.keywords = lowerCaseKeywordsSet;
}
// begin command
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionBeginCommand];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.beginCommand = value;
} else {
self.beginCommand = @"";
}
// end command
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionEndCommand];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.endCommand = value;
} else {
self.endCommand = @"";
}
// begin instruction
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionBeginInstruction];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.beginInstruction = value;
} else {
self.beginInstruction = @"";
}
// end instruction
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionEndInstruction];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.endInstruction = value;
} else {
self.endInstruction = @"";
}
// begin variable
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionBeginVariable];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.beginVariableCharacterSet = [NSCharacterSet characterSetWithCharactersInString:value];
} else {
self.beginVariableCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@""];
}
// end variable
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionEndVariable];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.endVariableCharacterSet = [NSCharacterSet characterSetWithCharactersInString:value];
} else {
self.endVariableCharacterSet = [NSCharacterSet characterSetWithCharactersInString:@""];
}
// first string
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionFirstString];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.firstString = value;
if (![value isEqualToString:@""]) {
firstStringUnichar = [value characterAtIndex:0];
}
} else {
self.firstString = @"";
}
// second string
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionSecondString];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.secondString = value;
if (![value isEqualToString:@""]) {
secondStringUnichar = [value characterAtIndex:0];
}
} else {
self.secondString = @"";
}
// first single line comment
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionFirstSingleLineComment];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.firstSingleLineComment = value;
} else {
self.firstSingleLineComment = @"";
}
self.singleLineComments = [NSMutableArray arrayWithCapacity:2];
[self.singleLineComments addObject:firstSingleLineComment];
// second single line comment
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionSecondSingleLineComment];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.secondSingleLineComment = value;
} else {
self.secondSingleLineComment = @"";
}
[self.singleLineComments addObject:secondSingleLineComment];
// begin first multi line comment
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionBeginFirstMultiLineComment];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.beginFirstMultiLineComment = value;
} else {
self.beginFirstMultiLineComment = @"";
}
// end first multi line comment
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionEndFirstMultiLineComment];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.endFirstMultiLineComment = value;
} else {
self.endFirstMultiLineComment = @"";
}
self.multiLineComments = [NSMutableArray arrayWithCapacity:2];
[self.multiLineComments addObject:[NSArray arrayWithObjects:self.beginFirstMultiLineComment, self.endFirstMultiLineComment, nil]];
// begin second multi line comment
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionBeginSecondMultiLineComment];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.beginSecondMultiLineComment = value;
} else {
self.beginSecondMultiLineComment = @"";
}
// end second multi line comment
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionEndSecondMultiLineComment];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.endSecondMultiLineComment = value;
} else {
self.endSecondMultiLineComment = @"";
}
[self.multiLineComments addObject:[NSArray arrayWithObjects:self.beginSecondMultiLineComment, self.endSecondMultiLineComment, nil]];
// function definition
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionFunctionDefinition];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.functionDefinition = value;
} else {
self.functionDefinition = @"";
}
// remove from function
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionRemoveFromFunction];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
self.removeFromFunction = value;
} else {
self.removeFromFunction = @"";
}
// exclude characters from keyword start character set
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionExcludeFromKeywordStartCharacterSet];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
NSMutableCharacterSet *temporaryCharacterSet = [[keywordStartCharacterSet mutableCopy] autorelease];
[temporaryCharacterSet removeCharactersInString:value];
self.keywordStartCharacterSet = [[temporaryCharacterSet copy] autorelease];
}
// exclude characters from keyword end character set
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionExcludeFromKeywordEndCharacterSet];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
NSMutableCharacterSet *temporaryCharacterSet = [[keywordEndCharacterSet mutableCopy] autorelease];
[temporaryCharacterSet removeCharactersInString:value];
self.keywordEndCharacterSet = [[temporaryCharacterSet copy] autorelease];
}
// include characters in keyword start character set
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionIncludeInKeywordStartCharacterSet];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
NSMutableCharacterSet *temporaryCharacterSet = [[keywordStartCharacterSet mutableCopy] autorelease];
[temporaryCharacterSet addCharactersInString:value];
self.keywordStartCharacterSet = [[temporaryCharacterSet copy] autorelease];
}
// include characters in keyword end character set
value = [syntaxDictionary valueForKey:SMLSyntaxDefinitionIncludeInKeywordEndCharacterSet];
if (value) {
NSAssert([value isKindOfClass:[NSString class]], @"NSString expected");
NSMutableCharacterSet *temporaryCharacterSet = [[keywordEndCharacterSet mutableCopy] autorelease];
[temporaryCharacterSet addCharactersInString:value];
self.keywordEndCharacterSet = [[temporaryCharacterSet copy] autorelease];
}
[self prepareRegularExpressions];
}
/*
- guessSyntaxDefinitionExtensionFromFirstLine:
*/
- (NSString *)guessSyntaxDefinitionExtensionFromFirstLine:(NSString *)firstLine
{
NSString *returnString = nil;
NSRange firstLineRange = NSMakeRange(0, [firstLine length]);
if ([firstLine rangeOfString:@"perl" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"pl";
} else if ([firstLine rangeOfString:@"wish" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"tcl";
} else if ([firstLine rangeOfString:@"sh" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"sh";
} else if ([firstLine rangeOfString:@"php" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"php";
} else if ([firstLine rangeOfString:@"python" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"py";
} else if ([firstLine rangeOfString:@"awk" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"awk";
} else if ([firstLine rangeOfString:@"xml" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"xml";
} else if ([firstLine rangeOfString:@"ruby" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"rb";
} else if ([firstLine rangeOfString:@"%!ps" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"ps";
} else if ([firstLine rangeOfString:@"%pdf" options:NSCaseInsensitiveSearch range:firstLineRange].location != NSNotFound) {
returnString = @"pdf";
}
return returnString;
}
#pragma mark -
#pragma mark Regex handling
/*
- prepareRegularExpressions
*/
- (void)prepareRegularExpressions
{
if ([[SMLDefaults valueForKey:MGSFragariaPrefsColourMultiLineStrings] boolValue] == NO) {
firstStringPattern = [[ICUPattern alloc] initWithString:[NSString stringWithFormat:@"\\W%@[^%@\\\\\\r\\n]*+(?:\\\\(?:.|$)[^%@\\\\\\r\\n]*+)*+%@", self.firstString, self.firstString, self.firstString, self.firstString]];
secondStringPattern = [[ICUPattern alloc] initWithString:[NSString stringWithFormat:@"\\W%@[^%@\\\\\\r\\n]*+(?:\\\\(?:.|$)[^%@\\\\]*+)*+%@", self.secondString, self.secondString, self.secondString, self.secondString]];
} else {
firstStringPattern = [[ICUPattern alloc] initWithString:[NSString stringWithFormat:@"\\W%@[^%@\\\\]*+(?:\\\\(?:.|$)[^%@\\\\]*+)*+%@", self.firstString, self.firstString, self.firstString, self.firstString]];
secondStringPattern = [[ICUPattern alloc] initWithString:[NSString stringWithFormat:@"\\W%@[^%@\\\\]*+(?:\\\\(?:.|$)[^%@\\\\]*+)*+%@", self.secondString, self.secondString, self.secondString, self.secondString]];
}
}
#pragma mark -
#pragma mark Accessors
/*
- completeString
*/
- (NSString *)completeString
{
return [[document valueForKey:ro_MGSFOTextView] string];
}
#pragma mark -
#pragma mark Colouring
/*
- removeAllColours
*/
- (void)removeAllColours
{
NSRange wholeRange = NSMakeRange(0, [[self completeString] length]);
[firstLayoutManager removeTemporaryAttribute:NSForegroundColorAttributeName forCharacterRange:wholeRange];
}
/*
- removeColoursFromRange
*/
- (void)removeColoursFromRange:(NSRange)range
{
[firstLayoutManager removeTemporaryAttribute:NSForegroundColorAttributeName forCharacterRange:range];
}
/*
- pageRecolour
*/
- (void)pageRecolour
{
[self pageRecolourTextView:[document valueForKey:ro_MGSFOTextView]];
}
/*
- pageRecolourTextView:
*/
- (void)pageRecolourTextView:(SMLTextView *)textView
{
if (!self.isSyntaxColouringRequired) {
return;
}
if (textView == nil) {
return;
}
NSRect visibleRect = [[[textView enclosingScrollView] contentView] documentVisibleRect];
NSRange glyphRange = [[textView layoutManager] glyphRangeForBoundingRect:visibleRect inTextContainer:[textView textContainer]];
NSRange visibleRange = [[textView layoutManager] characterRangeForGlyphRange:glyphRange actualGlyphRange:NULL];
NSInteger beginningOfFirstVisibleLine = [[textView string] lineRangeForRange:NSMakeRange(visibleRange.location, 0)].location;
NSInteger endOfLastVisibleLine = NSMaxRange([[self completeString] lineRangeForRange:NSMakeRange(NSMaxRange(visibleRange), 0)]);
[self recolourRange:NSMakeRange(beginningOfFirstVisibleLine, endOfLastVisibleLine - beginningOfFirstVisibleLine)];
}
/*
- pageRecolourTextView:options:
*/
- (void)pageRecolourTextView:(SMLTextView *)textView options:(NSDictionary *)options
{
if (!textView) {
return;
}
if (!self.isSyntaxColouringRequired) {
return;
}
// colourAll option
NSNumber *colourAll = [options objectForKey:@"colourAll"];
if (!colourAll || ![colourAll boolValue]) {
[self pageRecolourTextView:textView];
return;
}
[self recolourRange:NSMakeRange(0, [[textView string] length])];
}
/*
- recolourRange:
*/
- (void)recolourRange:(NSRange)rangeToRecolour
{
if (reactToChanges == NO) {
return;
}
// establish behavior
BOOL shouldOnlyColourTillTheEndOfLine = [[SMLDefaults valueForKey:MGSFragariaPrefsOnlyColourTillTheEndOfLine] boolValue];
BOOL shouldColourMultiLineStrings = [[SMLDefaults valueForKey:MGSFragariaPrefsColourMultiLineStrings] boolValue];
// setup
NSString *documentString = [self completeString];
NSUInteger documentStringLength = [documentString length];
NSRange effectiveRange = rangeToRecolour;
NSRange rangeOfLine = NSMakeRange(0, 0);
NSRange foundRange = NSMakeRange(0, 0);
NSRange searchRange = NSMakeRange(0, 0);
NSUInteger searchSyntaxLength = 0;
NSUInteger colourStartLocation = 0, colourEndLocation = 0, endOfLine = 0;
NSUInteger colourLength = 0;
NSUInteger endLocationInMultiLine = 0;
NSUInteger beginLocationInMultiLine = 0;
NSUInteger queryLocation = 0;
unichar testCharacter = 0;
// trace
//NSLog(@"rangeToRecolor location %i length %i", rangeToRecolour.location, rangeToRecolour.length);
// adjust effective range
//
// When multiline strings are coloured we need to scan backwards to
// find where the string might have started if it's "above" the top of the screen.
//
if (shouldColourMultiLineStrings) {
NSInteger beginFirstStringInMultiLine = [documentString rangeOfString:self.firstString options:NSBackwardsSearch range:NSMakeRange(0, effectiveRange.location)].location;
if (beginFirstStringInMultiLine != NSNotFound && [[firstLayoutManager temporaryAttributesAtCharacterIndex:beginFirstStringInMultiLine effectiveRange:NULL] isEqualToDictionary:stringsColour]) {
NSInteger startOfLine = [documentString lineRangeForRange:NSMakeRange(beginFirstStringInMultiLine, 0)].location;
effectiveRange = NSMakeRange(startOfLine, rangeToRecolour.length + (rangeToRecolour.location - startOfLine));
}
}
// setup working locations based on the effective range
NSUInteger rangeLocation = effectiveRange.location;
NSUInteger maxRangeLocation = NSMaxRange(effectiveRange);
// assign range string
NSString *rangeString = [documentString substringWithRange:effectiveRange];
NSUInteger rangeStringLength = [rangeString length];
if (rangeStringLength == 0) {
return;
}
// allocate the range scanner
NSScanner *rangeScanner = [[[NSScanner alloc] initWithString:rangeString] autorelease];
[rangeScanner setCharactersToBeSkipped:nil];
// allocate the document scanner
NSScanner *documentScanner = [[[NSScanner alloc] initWithString:documentString] autorelease];
[documentScanner setCharactersToBeSkipped:nil];
// uncolour the range
[self removeColoursFromRange:effectiveRange];
// colouring delegate
id colouringDelegate = [document valueForKey:MGSFOSyntaxColouringDelegate];
BOOL delegateRespondsToShouldColourGroup = [colouringDelegate respondsToSelector:@selector(fragariaDocument:shouldColourGroupWithBlock:string:range:info:)];
BOOL delegateRespondsToDidColourGroup = [colouringDelegate respondsToSelector:@selector(fragariaDocument:didColourGroupWithBlock:string:range:info:)];
NSDictionary *delegateInfo = nil;
// define a block that the colour delegate can use to effect colouring
BOOL (^colourRangeBlock)(NSDictionary *, NSRange) = ^(NSDictionary *colourInfo, NSRange range) {
[self setColour:colourInfo range:range];
// at the moment we always succeed
return YES;
};
@try {
BOOL doColouring = YES;
//
// query delegate about colouring the document
//
if ([colouringDelegate respondsToSelector:@selector(fragariaDocument:shouldColourWithBlock:string:range:info:)]) {
// build minimal delegate info dictionary
delegateInfo = @{SMLSyntaxInfo : self.syntaxDictionary, SMLSyntaxWillColour : @(self.isSyntaxColouringRequired)};
// query delegate about colouring
doColouring = [colouringDelegate fragariaDocument:document shouldColourWithBlock:colourRangeBlock string:documentString range:rangeToRecolour info:delegateInfo ];
}
if (doColouring) {
//
// Numbers
//
doColouring = [[SMLDefaults valueForKey:MGSFragariaPrefsColourNumbers] boolValue];
// query delegate about colouring
if (delegateRespondsToShouldColourGroup) {
// build delegate info dictionary
delegateInfo = @{SMLSyntaxGroup : SMLSyntaxGroupNumber, SMLSyntaxGroupID : @(kSMLSyntaxGroupNumber), SMLSyntaxWillColour : @(doColouring), SMLSyntaxAttributes : numbersColour, SMLSyntaxInfo : self.syntaxDictionary};
// call the delegate
doColouring = [colouringDelegate fragariaDocument:document shouldColourGroupWithBlock:colourRangeBlock string:documentString range:rangeToRecolour info:delegateInfo ];
}
// do colouring
if (doColouring) {
// reset scanner
[rangeScanner mgs_setScanLocation:0];
// scan range to end
while (![rangeScanner isAtEnd]) {
// scan up to a number character
[rangeScanner scanUpToCharactersFromSet:self.numberCharacterSet intoString:NULL];
colourStartLocation = [rangeScanner scanLocation];
// scan to number end
[rangeScanner scanCharactersFromSet:self.numberCharacterSet intoString:NULL];
colourEndLocation = [rangeScanner scanLocation];
if (colourStartLocation == colourEndLocation) {
break;
}
// don't colour if preceding character is a letter.
// this prevents us from colouring numbers in variable names,
queryLocation = colourStartLocation + rangeLocation;
if (queryLocation > 0) {
testCharacter = [documentString characterAtIndex:queryLocation - 1];
// numbers can occur in variable, class and function names
// eg: var_1 should not be coloured as a number
if ([self.nameCharacterSet characterIsMember:testCharacter]) {
continue;
}
}
// TODO: handle constructs such as 1..5 which may occur within some loop constructs
// don't colour a trailing decimal point as some languages may use it as a line terminator
if (colourEndLocation > 0) {
queryLocation = colourEndLocation - 1;
testCharacter = [rangeString characterAtIndex:queryLocation];
if (testCharacter == self.decimalPointCharacter) {
colourEndLocation--;
}
}
[self setColour:numbersColour range:NSMakeRange(colourStartLocation + rangeLocation, colourEndLocation - colourStartLocation)];
}
// inform delegate that colouring is done
if (delegateRespondsToDidColourGroup) {
[colouringDelegate fragariaDocument:document didColourGroupWithBlock:colourRangeBlock string:documentString range:rangeToRecolour info:delegateInfo];
}
}
//
// Commands
//
doColouring = [[SMLDefaults valueForKey:MGSFragariaPrefsColourCommands] boolValue];
// query delegate about colouring
if (delegateRespondsToShouldColourGroup) {
// build delegate info dictionary
delegateInfo = @{SMLSyntaxGroup : SMLSyntaxGroupCommand, SMLSyntaxGroupID : @(kSMLSyntaxGroupCommand), SMLSyntaxWillColour : @(doColouring), SMLSyntaxAttributes : commandsColour, SMLSyntaxInfo : self.syntaxDictionary};
// call the delegate
doColouring = [colouringDelegate fragariaDocument:document shouldColourGroupWithBlock:colourRangeBlock string:documentString range:rangeToRecolour info:delegateInfo ];
}
if (doColouring && ![self.beginCommand isEqualToString:@""]) {
searchSyntaxLength = [self.endCommand length];
unichar beginCommandCharacter = [self.beginCommand characterAtIndex:0];
unichar endCommandCharacter = [self.endCommand characterAtIndex:0];
// reset scanner
[rangeScanner mgs_setScanLocation:0];
// scan range to end
while (![rangeScanner isAtEnd]) {
[rangeScanner scanUpToString:self.beginCommand intoString:nil];
colourStartLocation = [rangeScanner scanLocation];
endOfLine = NSMaxRange([rangeString lineRangeForRange:NSMakeRange(colourStartLocation, 0)]);
if (![rangeScanner scanUpToString:self.endCommand intoString:nil] || [rangeScanner scanLocation] >= endOfLine) {
[rangeScanner mgs_setScanLocation:endOfLine];
continue; // Don't colour it if it hasn't got a closing tag
} else {
// To avoid problems with strings like <yada <%=yada%> yada> we need to balance the number of begin- and end-tags
// If ever there's a beginCommand or endCommand with more than one character then do a check first
NSUInteger commandLocation = colourStartLocation + 1;
NSUInteger skipEndCommand = 0;
while (commandLocation < endOfLine) {
unichar commandCharacterTest = [rangeString characterAtIndex:commandLocation];
if (commandCharacterTest == endCommandCharacter) {
if (!skipEndCommand) {
break;