Initial copy of Scintilla 3.21 code
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@72331 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robin Dunn
239
src/stc/scintilla/lexers/LexMatlab.cxx
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239
src/stc/scintilla/lexers/LexMatlab.cxx
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// Scintilla source code edit control
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/** @file LexMatlab.cxx
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** Lexer for Matlab.
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** Written by Jos<6F> Fonseca
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**
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** Changes by Christoph Dalitz 2003/12/04:
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** - added support for Octave
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** - Strings can now be included both in single or double quotes
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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 <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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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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#ifdef SCI_NAMESPACE
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using namespace Scintilla;
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#endif
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static bool IsMatlabCommentChar(int c) {
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return (c == '%') ;
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}
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static bool IsOctaveCommentChar(int c) {
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return (c == '%' || c == '#') ;
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}
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static bool IsMatlabComment(Accessor &styler, int pos, int len) {
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return len > 0 && IsMatlabCommentChar(styler[pos]) ;
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}
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static bool IsOctaveComment(Accessor &styler, int pos, int len) {
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return len > 0 && IsOctaveCommentChar(styler[pos]) ;
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}
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static inline bool IsAWordChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '_');
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}
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static inline bool IsAWordStart(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '_');
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}
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static void ColouriseMatlabOctaveDoc(
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unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler,
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bool (*IsCommentChar)(int)) {
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WordList &keywords = *keywordlists[0];
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styler.StartAt(startPos);
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bool transpose = false;
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StyleContext sc(startPos, length, initStyle, styler);
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for (; sc.More(); sc.Forward()) {
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if (sc.state == SCE_MATLAB_OPERATOR) {
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if (sc.chPrev == '.') {
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if (sc.ch == '*' || sc.ch == '/' || sc.ch == '\\' || sc.ch == '^') {
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sc.ForwardSetState(SCE_MATLAB_DEFAULT);
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transpose = false;
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} else if (sc.ch == '\'') {
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sc.ForwardSetState(SCE_MATLAB_DEFAULT);
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transpose = true;
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} else {
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sc.SetState(SCE_MATLAB_DEFAULT);
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}
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} else {
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sc.SetState(SCE_MATLAB_DEFAULT);
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}
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} else if (sc.state == SCE_MATLAB_KEYWORD) {
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if (!isalnum(sc.ch) && sc.ch != '_') {
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char s[100];
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sc.GetCurrentLowered(s, sizeof(s));
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if (keywords.InList(s)) {
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sc.SetState(SCE_MATLAB_DEFAULT);
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transpose = false;
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} else {
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sc.ChangeState(SCE_MATLAB_IDENTIFIER);
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sc.SetState(SCE_MATLAB_DEFAULT);
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transpose = true;
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}
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}
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} else if (sc.state == SCE_MATLAB_NUMBER) {
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if (!isdigit(sc.ch) && sc.ch != '.'
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&& !(sc.ch == 'e' || sc.ch == 'E')
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&& !((sc.ch == '+' || sc.ch == '-') && (sc.chPrev == 'e' || sc.chPrev == 'E'))) {
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sc.SetState(SCE_MATLAB_DEFAULT);
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transpose = true;
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}
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} else if (sc.state == SCE_MATLAB_STRING) {
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if (sc.ch == '\'') {
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if (sc.chNext == '\'') {
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sc.Forward();
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} else {
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sc.ForwardSetState(SCE_MATLAB_DEFAULT);
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}
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}
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} else if (sc.state == SCE_MATLAB_DOUBLEQUOTESTRING) {
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if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\"') {
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sc.ForwardSetState(SCE_MATLAB_DEFAULT);
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}
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} else if (sc.state == SCE_MATLAB_COMMENT || sc.state == SCE_MATLAB_COMMAND) {
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if (sc.atLineEnd) {
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sc.SetState(SCE_MATLAB_DEFAULT);
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transpose = false;
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}
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}
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if (sc.state == SCE_MATLAB_DEFAULT) {
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if (IsCommentChar(sc.ch)) {
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sc.SetState(SCE_MATLAB_COMMENT);
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} else if (sc.ch == '!' && sc.chNext != '=' ) {
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sc.SetState(SCE_MATLAB_COMMAND);
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} else if (sc.ch == '\'') {
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if (transpose) {
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sc.SetState(SCE_MATLAB_OPERATOR);
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} else {
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sc.SetState(SCE_MATLAB_STRING);
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}
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} else if (sc.ch == '"') {
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sc.SetState(SCE_MATLAB_DOUBLEQUOTESTRING);
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} else if (isdigit(sc.ch) || (sc.ch == '.' && isdigit(sc.chNext))) {
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sc.SetState(SCE_MATLAB_NUMBER);
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} else if (isalpha(sc.ch)) {
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sc.SetState(SCE_MATLAB_KEYWORD);
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} else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@' || sc.ch == '\\') {
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if (sc.ch == ')' || sc.ch == ']') {
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transpose = true;
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} else {
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transpose = false;
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}
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sc.SetState(SCE_MATLAB_OPERATOR);
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} else {
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transpose = false;
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}
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}
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}
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sc.Complete();
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}
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static void ColouriseMatlabDoc(unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler) {
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ColouriseMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsMatlabCommentChar);
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}
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static void ColouriseOctaveDoc(unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler) {
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ColouriseMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsOctaveCommentChar);
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}
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static void FoldMatlabOctaveDoc(unsigned int startPos, int length, int,
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WordList *[], Accessor &styler,
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bool (*IsComment)(Accessor&, int, int)) {
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int endPos = startPos + length;
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// Backtrack to previous line in case need to fix its fold status
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int lineCurrent = styler.GetLine(startPos);
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if (startPos > 0) {
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if (lineCurrent > 0) {
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lineCurrent--;
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startPos = styler.LineStart(lineCurrent);
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}
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}
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int spaceFlags = 0;
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int indentCurrent = styler.IndentAmount(lineCurrent, &spaceFlags, IsComment);
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char chNext = styler[startPos];
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for (int i = startPos; i < endPos; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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if ((ch == '\r' && chNext != '\n') || (ch == '\n') || (i == endPos)) {
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int lev = indentCurrent;
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int indentNext = styler.IndentAmount(lineCurrent + 1, &spaceFlags, IsComment);
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if (!(indentCurrent & SC_FOLDLEVELWHITEFLAG)) {
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// Only non whitespace lines can be headers
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if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext & SC_FOLDLEVELNUMBERMASK)) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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} else if (indentNext & SC_FOLDLEVELWHITEFLAG) {
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// Line after is blank so check the next - maybe should continue further?
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int spaceFlags2 = 0;
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int indentNext2 = styler.IndentAmount(lineCurrent + 2, &spaceFlags2, IsComment);
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if ((indentCurrent & SC_FOLDLEVELNUMBERMASK) < (indentNext2 & SC_FOLDLEVELNUMBERMASK)) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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}
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}
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}
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indentCurrent = indentNext;
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styler.SetLevel(lineCurrent, lev);
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lineCurrent++;
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}
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}
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}
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static void FoldMatlabDoc(unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler) {
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FoldMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsMatlabComment);
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}
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static void FoldOctaveDoc(unsigned int startPos, int length, int initStyle,
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WordList *keywordlists[], Accessor &styler) {
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FoldMatlabOctaveDoc(startPos, length, initStyle, keywordlists, styler, IsOctaveComment);
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}
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static const char * const matlabWordListDesc[] = {
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"Keywords",
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0
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};
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static const char * const octaveWordListDesc[] = {
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"Keywords",
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0
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};
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LexerModule lmMatlab(SCLEX_MATLAB, ColouriseMatlabDoc, "matlab", FoldMatlabDoc, matlabWordListDesc);
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LexerModule lmOctave(SCLEX_OCTAVE, ColouriseOctaveDoc, "octave", FoldOctaveDoc, octaveWordListDesc);
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