--- /dev/null
+// Scintilla source code edit control
+/** @file LexMatlab.cxx
+ ** Lexer for Matlab.
+ ** Written by José Fonseca
+ **
+ ** Changes by Christoph Dalitz 2003/12/04:
+ ** - added support for Octave
+ ** - Strings can now be included both in single or double quotes
+ **/
+// Copyright 1998-2001 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 "ILexer.h"
+#include "Scintilla.h"
+#include "SciLexer.h"
+
+#include "WordList.h"
+#include "LexAccessor.h"
+#include "Accessor.h"
+#include "StyleContext.h"
+#include "CharacterSet.h"
+#include "LexerModule.h"
+
+#ifdef SCI_NAMESPACE
+using namespace Scintilla;
+#endif
+
+static bool IsMatlabCommentChar(int c) {
+ return (c == '%') ;
+}
+
+static bool IsOctaveCommentChar(int c) {
+ return (c == '%' || c == '#') ;
+}
+
+static bool IsMatlabComment(Accessor &styler, int pos, int len) {
+ return len > 0 && IsMatlabCommentChar(styler[pos]) ;
+}
+
+static bool IsOctaveComment(Accessor &styler, int pos, int len) {
+ return len > 0 && IsOctaveCommentChar(styler[pos]) ;
+}
+
+static inline bool IsAWordChar(const int ch) {
+ return (ch < 0x80) && (isalnum(ch) || ch == '_');
+}
+
+static inline bool IsAWordStart(const int ch) {
+ return (ch < 0x80) && (isalnum(ch) || ch == '_');
+}
+
+static void ColouriseMatlabOctaveDoc(
+ unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler,
+ bool (*IsCommentChar)(int)) {
+
+ WordList &keywords = *keywordlists[0];
+
+ styler.StartAt(startPos);
+
+ bool transpose = false;
+
+ StyleContext sc(startPos, length, initStyle, styler);
+
+ for (; sc.More(); sc.Forward()) {
+
+ if (sc.state == SCE_MATLAB_OPERATOR) {
+ if (sc.chPrev == '.') {
+ if (sc.ch == '*' || sc.ch == '/' || sc.ch == '\\' || sc.ch == '^') {
+ sc.ForwardSetState(SCE_MATLAB_DEFAULT);
+ transpose = false;
+ } else if (sc.ch == '\'') {
+ sc.ForwardSetState(SCE_MATLAB_DEFAULT);
+ transpose = true;
+ } else {
+ sc.SetState(SCE_MATLAB_DEFAULT);
+ }
+ } else {
+ sc.SetState(SCE_MATLAB_DEFAULT);
+ }
+ } else if (sc.state == SCE_MATLAB_KEYWORD) {
+ if (!isalnum(sc.ch) && sc.ch != '_') {
+ char s[100];
+ sc.GetCurrentLowered(s, sizeof(s));
+ if (keywords.InList(s)) {
+ sc.SetState(SCE_MATLAB_DEFAULT);
+ transpose = false;
+ } else {
+ sc.ChangeState(SCE_MATLAB_IDENTIFIER);
+ sc.SetState(SCE_MATLAB_DEFAULT);
+ transpose = true;
+ }
+ }
+ } else if (sc.state == SCE_MATLAB_NUMBER) {
+ if (!isdigit(sc.ch) && sc.ch != '.'
+ && !(sc.ch == 'e' || sc.ch == 'E')
+ && !((sc.ch == '+' || sc.ch == '-') && (sc.chPrev == 'e' || sc.chPrev == 'E'))) {
+ sc.SetState(SCE_MATLAB_DEFAULT);
+ transpose = true;
+ }
+ } else if (sc.state == SCE_MATLAB_STRING) {
+ if (sc.ch == '\'') {
+ if (sc.chNext == '\'') {
+ sc.Forward();
+ } else {
+ sc.ForwardSetState(SCE_MATLAB_DEFAULT);
+ }
+ }
+ } else if (sc.state == SCE_MATLAB_DOUBLEQUOTESTRING) {
+ if (sc.ch == '\\') {
+ if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+ sc.Forward();
+ }
+ } else if (sc.ch == '\"') {
+ sc.ForwardSetState(SCE_MATLAB_DEFAULT);
+ }
+ } else if (sc.state == SCE_MATLAB_COMMENT || sc.state == SCE_MATLAB_COMMAND) {
+ if (sc.atLineEnd) {
+ sc.SetState(SCE_MATLAB_DEFAULT);
+ transpose = false;
+ }
+ }
+
+ if (sc.state == SCE_MATLAB_DEFAULT) {
+ if (IsCommentChar(sc.ch)) {
+ sc.SetState(SCE_MATLAB_COMMENT);
+ } else if (sc.ch == '!' && sc.chNext != '=' ) {
+ sc.SetState(SCE_MATLAB_COMMAND);
+ } else if (sc.ch == '\'') {
+ if (transpose) {
+ sc.SetState(SCE_MATLAB_OPERATOR);
+ } else {
+ sc.SetState(SCE_MATLAB_STRING);
+ }
+ } else if (sc.ch == '"') {
+ sc.SetState(SCE_MATLAB_DOUBLEQUOTESTRING);
+ } else if (isdigit(sc.ch) || (sc.ch == '.' && isdigit(sc.chNext))) {
+ sc.SetState(SCE_MATLAB_NUMBER);
+ } else if (isalpha(sc.ch)) {
+ sc.SetState(SCE_MATLAB_KEYWORD);
+ } else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@' || sc.ch == '\\') {
+ if (sc.ch == ')' || sc.ch == ']') {
+ transpose = true;
+ } else {
+ transpose = false;
+ }
+ sc.SetState(SCE_MATLAB_OPERATOR);
+ } else {
+ transpose = false;
+ }
+ }
+ }
+ sc.Complete();
+}
+
+static void ColouriseMatlabDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler) {
+ ColouriseMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsMatlabCommentChar);
+}
+
+static void ColouriseOctaveDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler) {
+ ColouriseMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsOctaveCommentChar);
+}
+
+static void FoldMatlabOctaveDoc(unsigned int startPos, int length, int,
+ WordList *[], Accessor &styler,
+ bool (*IsComment)(Accessor&, int, int)) {
+
+ int endPos = startPos + length;
+
+ // Backtrack to previous line in case need to fix its fold status
+ int lineCurrent = styler.GetLine(startPos);
+ if (startPos > 0) {
+ if (lineCurrent > 0) {
+ lineCurrent--;
+ startPos = styler.LineStart(lineCurrent);
+ }
+ }
+ int spaceFlags = 0;
+ int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsComment);
+ char chNext = styler[startPos];
+ for (int i = startPos; i < endPos; i++) {
+ char ch = chNext;
+ chNext = styler.SafeGetCharAt(i + 1);
+
+ if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
+ int lev = indentCurrent;
+ int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsComment);
+ if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
+ // Only non whitespace lines can be headers
+ if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
+ lev |= SC_FOLDLEVELHEADERFLAG;
+ } else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
+ // Line after is blank so check the next - maybe should continue further?
+ int spaceFlags2 = 0;
+ int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsComment);
+ if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
+ lev |= SC_FOLDLEVELHEADERFLAG;
+ }
+ }
+ }
+ indentCurrent = indentNext;
+ styler.SetLevel(lineCurrent, lev);
+ lineCurrent++;
+ }
+ }
+}
+
+static void FoldMatlabDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler) {
+ FoldMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsMatlabComment);
+}
+
+static void FoldOctaveDoc(unsigned int startPos, int length, int initStyle,
+ WordList *keywordlists[], Accessor &styler) {
+ FoldMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsOctaveComment);
+}
+
+static const char * const matlabWordListDesc[] = {
+ "Keywords",
+ 0
+};
+
+static const char * const octaveWordListDesc[] = {
+ "Keywords",
+ 0
+};
+
+LexerModule lmMatlab(SCLEX_MATLAB, ColouriseMatlabDoc, "matlab", FoldMatlabDoc, matlabWordListDesc);
+
+LexerModule lmOctave(SCLEX_OCTAVE, ColouriseOctaveDoc, "octave", FoldOctaveDoc, octaveWordListDesc);
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