Initial commit: ReclassX structured binary editor

third_party/qscintilla/scintilla/lexlib/LexerModule.cpp

@@ -0,0 +1,126 @@
+// 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 <cstdlib>
+#include <cassert>
+
+#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"
+
+using namespace Scintilla;
+
+LexerModule::LexerModule(int language_,
+	LexerFunction fnLexer_,
+	const char *languageName_,
+	LexerFunction fnFolder_,
+	const char *const wordListDescriptions_[],
+	const LexicalClass *lexClasses_,
+	size_t nClasses_) :
+	language(language_),
+	fnLexer(fnLexer_),
+	fnFolder(fnFolder_),
+	fnFactory(nullptr),
+	wordListDescriptions(wordListDescriptions_),
+	lexClasses(lexClasses_),
+	nClasses(nClasses_),
+	languageName(languageName_) {
+}
+
+LexerModule::LexerModule(int language_,
+	LexerFactoryFunction fnFactory_,
+	const char *languageName_,
+	const char * const wordListDescriptions_[]) :
+	language(language_),
+	fnLexer(nullptr),
+	fnFolder(nullptr),
+	fnFactory(fnFactory_),
+	wordListDescriptions(wordListDescriptions_),
+	lexClasses(nullptr),
+	nClasses(0),
+	languageName(languageName_) {
+}
+
+LexerModule::~LexerModule() {
+}
+
+int LexerModule::GetLanguage() const { 
+	return language;
+}
+
+int LexerModule::GetNumWordLists() const {
+	if (!wordListDescriptions) {
+		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];
+	}
+}
+
+const LexicalClass *LexerModule::LexClasses() const {
+	return lexClasses;
+}
+
+size_t LexerModule::NamedStyles() const {
+	return nClasses;
+}
+
+ILexer *LexerModule::Create() const {
+	if (fnFactory)
+		return fnFactory();
+	else
+		return new LexerSimple(this);
+}
+
+void LexerModule::Lex(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle,
+	  WordList *keywordlists[], Accessor &styler) const {
+	if (fnLexer)
+		fnLexer(startPos, lengthDoc, initStyle, keywordlists, styler);
+}
+
+void LexerModule::Fold(Sci_PositionU startPos, Sci_Position lengthDoc, int initStyle,
+	  WordList *keywordlists[], Accessor &styler) const {
+	if (fnFolder) {
+		Sci_Position lineCurrent = styler.GetLine(startPos);
+		// Move back one line in case deletion wrecked current line fold state
+		if (lineCurrent > 0) {
+			lineCurrent--;
+			const Sci_Position 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);
+	}
+}