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// Scintilla source code edit control
/** @file LexerModule.cxx
** Colourise for particular languages.
**/
// Copyright 1998-2010 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <string>
#include "ILexer.h"
#include "Scintilla.h"
#include "SciLexer.h"
#include "PropSetSimple.h"
#include "WordList.h"
#include "LexAccessor.h"
#include "Accessor.h"
#include "LexerModule.h"
#include "LexerBase.h"
#include "LexerSimple.h"
#ifdef SCI_NAMESPACE
using namespace Scintilla;
#endif
LexerModule::LexerModule(int language_,
LexerFunction fnLexer_,
const char *languageName_,
LexerFunction fnFolder_,
const char *const wordListDescriptions_[],
int styleBits_) :
language(language_),
fnLexer(fnLexer_),
fnFolder(fnFolder_),
fnFactory(0),
wordListDescriptions(wordListDescriptions_),
styleBits(styleBits_),
languageName(languageName_) {
}
LexerModule::LexerModule(int language_,
LexerFactoryFunction fnFactory_,
const char *languageName_,
const char * const wordListDescriptions_[],
int styleBits_) :
language(language_),
fnLexer(0),
fnFolder(0),
fnFactory(fnFactory_),
wordListDescriptions(wordListDescriptions_),
styleBits(styleBits_),
languageName(languageName_) {
}
int LexerModule::GetNumWordLists() const {
if (wordListDescriptions == NULL) {
return -1;
} else {
int numWordLists = 0;
while (wordListDescriptions[numWordLists]) {
++numWordLists;
}
return numWordLists;
}
}
const char *LexerModule::GetWordListDescription(int index) const {
assert(index < GetNumWordLists());
if (!wordListDescriptions || (index >= GetNumWordLists())) {
return "";
} else {
return wordListDescriptions[index];
}
}
int LexerModule::GetStyleBitsNeeded() const {
return styleBits;
}
ILexer *LexerModule::Create() const {
if (fnFactory)
return fnFactory();
else
return new LexerSimple(this);
}
void LexerModule::Lex(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler) const {
if (fnLexer)
fnLexer(startPos, lengthDoc, initStyle, keywordlists, styler);
}
void LexerModule::Fold(unsigned int startPos, int lengthDoc, int initStyle,
WordList *keywordlists[], Accessor &styler) const {
if (fnFolder) {
int lineCurrent = styler.GetLine(startPos);
// Move back one line in case deletion wrecked current line fold state
if (lineCurrent > 0) {
lineCurrent--;
int newStartPos = styler.LineStart(lineCurrent);
lengthDoc += startPos - newStartPos;
startPos = newStartPos;
initStyle = 0;
if (startPos > 0) {
initStyle = styler.StyleAt(startPos - 1);
}
}
fnFolder(startPos, lengthDoc, initStyle, keywordlists, styler);
}
}
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