mirror of
https://github.com/scratchfoundation/bgfx.git
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197 lines
5.8 KiB
C++
197 lines
5.8 KiB
C++
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// Scintilla source code edit control
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/** @file LexBaan.cxx
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** Lexer for Baan.
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** Based heavily on LexCPP.cxx
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**/
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// Copyright 2001- by Vamsi Potluru <vamsi@who.net> & Praveen Ambekar <ambekarpraveen@yahoo.com>
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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 inline bool IsAWordChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || 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 ColouriseBaanDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
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Accessor &styler) {
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WordList &keywords = *keywordlists[0];
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WordList &keywords2 = *keywordlists[1];
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bool stylingWithinPreprocessor = styler.GetPropertyInt("styling.within.preprocessor") != 0;
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if (initStyle == SCE_BAAN_STRINGEOL) // Does not leak onto next line
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initStyle = SCE_BAAN_DEFAULT;
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int visibleChars = 0;
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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_BAAN_OPERATOR) {
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sc.SetState(SCE_BAAN_DEFAULT);
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} else if (sc.state == SCE_BAAN_NUMBER) {
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if (!IsAWordChar(sc.ch)) {
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sc.SetState(SCE_BAAN_DEFAULT);
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}
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} else if (sc.state == SCE_BAAN_IDENTIFIER) {
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if (!IsAWordChar(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.ChangeState(SCE_BAAN_WORD);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_BAAN_WORD2);
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}
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sc.SetState(SCE_BAAN_DEFAULT);
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}
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} else if (sc.state == SCE_BAAN_PREPROCESSOR) {
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if (stylingWithinPreprocessor) {
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if (IsASpace(sc.ch)) {
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sc.SetState(SCE_BAAN_DEFAULT);
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}
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} else {
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if (sc.atLineEnd && (sc.chNext != '^')) {
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sc.SetState(SCE_BAAN_DEFAULT);
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}
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}
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} else if (sc.state == SCE_BAAN_COMMENT) {
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if (sc.atLineEnd) {
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sc.SetState(SCE_BAAN_DEFAULT);
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}
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} else if (sc.state == SCE_BAAN_COMMENTDOC) {
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if (sc.MatchIgnoreCase("enddllusage")) {
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for (unsigned int i = 0; i < 10; i++){
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sc.Forward();
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}
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sc.ForwardSetState(SCE_BAAN_DEFAULT);
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}
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} else if (sc.state == SCE_BAAN_STRING) {
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if (sc.ch == '\"') {
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sc.ForwardSetState(SCE_BAAN_DEFAULT);
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} else if ((sc.atLineEnd) && (sc.chNext != '^')) {
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sc.ChangeState(SCE_BAAN_STRINGEOL);
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sc.ForwardSetState(SCE_C_DEFAULT);
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visibleChars = 0;
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}
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}
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if (sc.state == SCE_BAAN_DEFAULT) {
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if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
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sc.SetState(SCE_BAAN_NUMBER);
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} else if (sc.MatchIgnoreCase("dllusage")){
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sc.SetState(SCE_BAAN_COMMENTDOC);
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do {
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sc.Forward();
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} while ((!sc.atLineEnd) && sc.More());
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} else if (IsAWordStart(sc.ch)) {
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sc.SetState(SCE_BAAN_IDENTIFIER);
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} else if (sc.Match('|')){
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sc.SetState(SCE_BAAN_COMMENT);
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} else if (sc.ch == '\"') {
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sc.SetState(SCE_BAAN_STRING);
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} else if (sc.ch == '#' && visibleChars == 0) {
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// Preprocessor commands are alone on their line
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sc.SetState(SCE_BAAN_PREPROCESSOR);
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// Skip whitespace between # and preprocessor word
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do {
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sc.Forward();
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} while (IsASpace(sc.ch) && sc.More());
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} else if (isoperator(static_cast<char>(sc.ch))) {
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sc.SetState(SCE_BAAN_OPERATOR);
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}
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}
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if (sc.atLineEnd) {
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// Reset states to begining of colourise so no surprises
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// if different sets of lines lexed.
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visibleChars = 0;
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}
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if (!IsASpace(sc.ch)) {
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visibleChars++;
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}
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}
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sc.Complete();
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}
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static void FoldBaanDoc(unsigned int startPos, int length, int initStyle, WordList *[],
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Accessor &styler) {
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bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
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bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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unsigned int endPos = startPos + length;
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int visibleChars = 0;
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int lineCurrent = styler.GetLine(startPos);
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int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
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int levelCurrent = levelPrev;
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char chNext = styler[startPos];
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int styleNext = styler.StyleAt(startPos);
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int style = initStyle;
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for (unsigned 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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int stylePrev = style;
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style = styleNext;
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styleNext = styler.StyleAt(i + 1);
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bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
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if (foldComment &&
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(style == SCE_BAAN_COMMENT || style == SCE_BAAN_COMMENTDOC)) {
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if (style != stylePrev) {
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levelCurrent++;
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} else if ((style != styleNext) && !atEOL) {
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// Comments don't end at end of line and the next character may be unstyled.
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levelCurrent--;
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}
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}
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if (style == SCE_BAAN_OPERATOR) {
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if (ch == '{') {
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levelCurrent++;
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} else if (ch == '}') {
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levelCurrent--;
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}
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}
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if (atEOL) {
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int lev = levelPrev;
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if (visibleChars == 0 && foldCompact)
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lev |= SC_FOLDLEVELWHITEFLAG;
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if ((levelCurrent > levelPrev) && (visibleChars > 0))
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lev |= SC_FOLDLEVELHEADERFLAG;
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if (lev != styler.LevelAt(lineCurrent)) {
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styler.SetLevel(lineCurrent, lev);
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}
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lineCurrent++;
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levelPrev = levelCurrent;
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visibleChars = 0;
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}
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if (!isspacechar(ch))
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visibleChars++;
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}
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// Fill in the real level of the next line, keeping the current flags as they will be filled in later
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int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
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styler.SetLevel(lineCurrent, levelPrev | flagsNext);
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}
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LexerModule lmBaan(SCLEX_BAAN, ColouriseBaanDoc, "baan", FoldBaanDoc);
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