chore: bump scintilla and lexilla version
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235
3rdparty/lexilla545/lexilla/lexers/LexMake.cxx
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235
3rdparty/lexilla545/lexilla/lexers/LexMake.cxx
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// Scintilla source code edit control
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/** @file LexMake.cxx
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** Lexer for make files.
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**/
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// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <cstdlib>
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#include <cassert>
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#include <cstring>
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#include <cctype>
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#include <cstdio>
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#include <cstdarg>
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#include <string>
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#include <string_view>
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#include <map>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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#include "OptionSet.h"
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#include "DefaultLexer.h"
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using namespace Scintilla;
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using namespace Lexilla;
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namespace {
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// Options used for LexerMakeFile
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struct OptionsMake {
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};
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const char *const makeWordListDescription[] = {
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"Directives",
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nullptr
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};
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struct OptionSetMake : public OptionSet<OptionsMake> {
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OptionSetMake() {
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DefineWordListSets(makeWordListDescription);
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}
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};
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const LexicalClass lexicalClasses[] = {
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// Lexer makefile SCLEX_MAKEFILE SCE_MAKE_
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0, "SCE_MAKE_DEFAULT", "default", "White space",
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1, "SCE_MAKE_COMMENT", "comment", "Comment",
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2, "SCE_MAKE_PREPROCESSOR", "preprocessor", "Preprocessor",
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3, "SCE_MAKE_IDENTIFIER", "identifier", "Identifiers",
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4, "SCE_MAKE_OPERATOR", "operator", "Operator",
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5, "SCE_MAKE_TARGET", "identifier", "Identifiers",
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9, "SCE_MAKE_IDEOL", "error identifier", "Incomplete identifier reference",
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};
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bool AtEOL(Accessor &styler, Sci_PositionU i) {
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return (styler[i] == '\n') ||
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((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n'));
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}
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class LexerMakeFile : public DefaultLexer {
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WordList directives;
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OptionsMake options;
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OptionSetMake osMake;
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public:
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LexerMakeFile() :
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DefaultLexer("makefile", SCLEX_MAKEFILE, lexicalClasses, std::size(lexicalClasses)) {
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}
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const char *SCI_METHOD PropertyNames() override {
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return osMake.PropertyNames();
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}
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int SCI_METHOD PropertyType(const char *name) override {
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return osMake.PropertyType(name);
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}
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const char *SCI_METHOD DescribeProperty(const char *name) override {
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return osMake.DescribeProperty(name);
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}
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Sci_Position SCI_METHOD PropertySet(const char *key, const char *val) override;
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const char *SCI_METHOD PropertyGet(const char *key) override {
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return osMake.PropertyGet(key);
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}
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const char *SCI_METHOD DescribeWordListSets() override {
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return osMake.DescribeWordListSets();
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}
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Sci_Position SCI_METHOD WordListSet(int n, const char *wl) override;
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void ColouriseMakeLine(std::string_view lineBuffer,
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Sci_PositionU startLine, Sci_PositionU endPos, Accessor &styler);
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void SCI_METHOD Lex(Sci_PositionU startPos, Sci_Position length, int initStyle, IDocument *pAccess) override;
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static ILexer5 *LexerFactoryMakeFile() {
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return new LexerMakeFile();
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}
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};
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Sci_Position SCI_METHOD LexerMakeFile::PropertySet(const char *key, const char *val) {
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if (osMake.PropertySet(&options, key, val)) {
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return 0;
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}
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return -1;
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}
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Sci_Position SCI_METHOD LexerMakeFile::WordListSet(int n, const char *wl) {
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WordList *wordListN = nullptr;
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switch (n) {
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case 0:
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wordListN = &directives;
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break;
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default:
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break;
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}
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Sci_Position firstModification = -1;
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if (wordListN && wordListN->Set(wl)) {
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firstModification = 0;
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}
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return firstModification;
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}
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void LexerMakeFile::ColouriseMakeLine(
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const std::string_view lineBuffer,
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Sci_PositionU startLine,
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Sci_PositionU endPos,
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Accessor &styler) {
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const Sci_PositionU lengthLine = lineBuffer.length();
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Sci_PositionU i = 0;
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Sci_Position lastNonSpace = -1;
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unsigned int state = SCE_MAKE_DEFAULT;
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bool bSpecial = false;
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// check for a tab character in column 0 indicating a command
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const bool bCommand = StartsWith(lineBuffer, '\t');
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// Skip initial spaces
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while ((i < lengthLine) && isspacechar(lineBuffer[i])) {
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i++;
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}
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if (i < lengthLine) {
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if (lineBuffer[i] == '#') { // Comment
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styler.ColourTo(endPos, SCE_MAKE_COMMENT);
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return;
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}
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if (lineBuffer[i] == '!') { // Special directive
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styler.ColourTo(endPos, SCE_MAKE_PREPROCESSOR);
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return;
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}
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if (IsUpperOrLowerCase(lineBuffer[i]) &&
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(lineBuffer.find_first_of(":=") == std::string::npos)) {
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const std::string_view firstWord(lineBuffer.substr(i));
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size_t endWord = 0;
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while ((endWord < firstWord.length()) && IsUpperOrLowerCase(firstWord[endWord])) {
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endWord++;
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}
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if (directives.InList(firstWord.substr(0, endWord))) {
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styler.ColourTo(startLine + i + endWord - 1, SCE_MAKE_PREPROCESSOR);
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i += endWord;
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}
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}
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}
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int varCount = 0;
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while (i < lengthLine) {
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if (lineBuffer.substr(i, 2) == "$(") {
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styler.ColourTo(startLine + i - 1, state);
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state = SCE_MAKE_IDENTIFIER;
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varCount++;
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} else if (state == SCE_MAKE_IDENTIFIER && lineBuffer[i] == ')') {
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if (--varCount == 0) {
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styler.ColourTo(startLine + i, state);
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state = SCE_MAKE_DEFAULT;
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}
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}
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// skip identifier and target styling if this is a command line
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if (!bSpecial && !bCommand && AnyOf(lineBuffer[i], ':', '=')) {
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// Three cases:
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// : target
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// := immediate assignment
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// = lazy assignment
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const bool colon = lineBuffer[i] == ':';
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const bool immediate = colon && ((i + 1) < lengthLine) && (lineBuffer[i + 1] == '=');
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const Sci_PositionU lengthOperator = immediate ? 1 : 0;
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if (lastNonSpace >= 0) {
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const int attribute = (colon && !immediate) ? SCE_MAKE_TARGET : SCE_MAKE_IDENTIFIER;
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styler.ColourTo(startLine + lastNonSpace, attribute);
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}
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styler.ColourTo(startLine + i - 1, SCE_MAKE_DEFAULT);
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styler.ColourTo(startLine + i + lengthOperator, SCE_MAKE_OPERATOR);
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bSpecial = true; // Only react to the first ':' or '=' of the line
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state = SCE_MAKE_DEFAULT;
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}
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if (!isspacechar(lineBuffer[i])) {
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lastNonSpace = i;
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}
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i++;
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}
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if (state == SCE_MAKE_IDENTIFIER) {
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styler.ColourTo(endPos, SCE_MAKE_IDEOL); // Error, variable reference not ended
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} else {
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styler.ColourTo(endPos, SCE_MAKE_DEFAULT);
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}
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}
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void LexerMakeFile::Lex(Sci_PositionU startPos, Sci_Position length, int /* initStyle */, IDocument *pAccess) {
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Accessor styler(pAccess, nullptr);
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std::string lineBuffer;
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styler.StartAt(startPos);
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styler.StartSegment(startPos);
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Sci_PositionU startLine = startPos;
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for (Sci_PositionU i = startPos; i < startPos + length; i++) {
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lineBuffer.push_back(styler[i]);
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if (AtEOL(styler, i)) {
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// End of line (or of line buffer) met, colourise it
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ColouriseMakeLine(lineBuffer, startLine, i, styler);
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lineBuffer.clear();
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startLine = i + 1;
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}
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}
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if (!lineBuffer.empty()) { // Last line does not have ending characters
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ColouriseMakeLine(lineBuffer, startLine, startPos + length - 1, styler);
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}
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styler.Flush();
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}
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}
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extern const LexerModule lmMake(SCLEX_MAKEFILE, LexerMakeFile::LexerFactoryMakeFile, "makefile", makeWordListDescription);
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