277 lines
8.0 KiB
C++
Executable File
277 lines
8.0 KiB
C++
Executable File
// Scintilla source code edit control
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/** @file LexESCRIPT.cxx
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** Lexer for ESCRIPT
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**/
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// Copyright 2003 by Patrizio Bekerle (patrizio@bekerle.com)
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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 == '_');
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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 ColouriseESCRIPTDoc(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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WordList &keywords3 = *keywordlists[2];
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// Do not leak onto next line
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/*if (initStyle == SCE_ESCRIPT_STRINGEOL)
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initStyle = SCE_ESCRIPT_DEFAULT;*/
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StyleContext sc(startPos, length, initStyle, styler);
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bool caseSensitive = styler.GetPropertyInt("escript.case.sensitive", 0) != 0;
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for (; sc.More(); sc.Forward()) {
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/*if (sc.atLineStart && (sc.state == SCE_ESCRIPT_STRING)) {
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// Prevent SCE_ESCRIPT_STRINGEOL from leaking back to previous line
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sc.SetState(SCE_ESCRIPT_STRING);
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}*/
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// Handle line continuation generically.
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if (sc.ch == '\\') {
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if (sc.chNext == '\n' || sc.chNext == '\r') {
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sc.Forward();
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if (sc.ch == '\r' && sc.chNext == '\n') {
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sc.Forward();
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}
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continue;
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}
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}
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// Determine if the current state should terminate.
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if (sc.state == SCE_ESCRIPT_OPERATOR || sc.state == SCE_ESCRIPT_BRACE) {
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sc.SetState(SCE_ESCRIPT_DEFAULT);
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} else if (sc.state == SCE_ESCRIPT_NUMBER) {
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if (!IsADigit(sc.ch) || sc.ch != '.') {
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sc.SetState(SCE_ESCRIPT_DEFAULT);
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}
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} else if (sc.state == SCE_ESCRIPT_IDENTIFIER) {
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if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
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char s[100];
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if (caseSensitive) {
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sc.GetCurrent(s, sizeof(s));
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} else {
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sc.GetCurrentLowered(s, sizeof(s));
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}
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// sc.GetCurrentLowered(s, sizeof(s));
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if (keywords.InList(s)) {
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sc.ChangeState(SCE_ESCRIPT_WORD);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_ESCRIPT_WORD2);
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} else if (keywords3.InList(s)) {
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sc.ChangeState(SCE_ESCRIPT_WORD3);
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// sc.state = SCE_ESCRIPT_IDENTIFIER;
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}
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sc.SetState(SCE_ESCRIPT_DEFAULT);
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}
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} else if (sc.state == SCE_ESCRIPT_COMMENT) {
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if (sc.Match('*', '/')) {
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sc.Forward();
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sc.ForwardSetState(SCE_ESCRIPT_DEFAULT);
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}
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} else if (sc.state == SCE_ESCRIPT_COMMENTDOC) {
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if (sc.Match('*', '/')) {
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sc.Forward();
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sc.ForwardSetState(SCE_ESCRIPT_DEFAULT);
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}
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} else if (sc.state == SCE_ESCRIPT_COMMENTLINE) {
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if (sc.atLineEnd) {
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sc.SetState(SCE_ESCRIPT_DEFAULT);
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}
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} else if (sc.state == SCE_ESCRIPT_STRING) {
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if (sc.ch == '\\') {
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if (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_ESCRIPT_DEFAULT);
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}
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}
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// Determine if a new state should be entered.
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if (sc.state == SCE_ESCRIPT_DEFAULT) {
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if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
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sc.SetState(SCE_ESCRIPT_NUMBER);
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} else if (IsAWordStart(sc.ch) || (sc.ch == '#')) {
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sc.SetState(SCE_ESCRIPT_IDENTIFIER);
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} else if (sc.Match('/', '*')) {
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sc.SetState(SCE_ESCRIPT_COMMENT);
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sc.Forward(); // Eat the * so it isn't used for the end of the comment
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} else if (sc.Match('/', '/')) {
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sc.SetState(SCE_ESCRIPT_COMMENTLINE);
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} else if (sc.ch == '\"') {
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sc.SetState(SCE_ESCRIPT_STRING);
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//} else if (isoperator(static_cast<char>(sc.ch))) {
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} else if (sc.ch == '+' || sc.ch == '-' || sc.ch == '*' || sc.ch == '/' || sc.ch == '=' || sc.ch == '<' || sc.ch == '>' || sc.ch == '&' || sc.ch == '|' || sc.ch == '!' || sc.ch == '?' || sc.ch == ':') {
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sc.SetState(SCE_ESCRIPT_OPERATOR);
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} else if (sc.ch == '{' || sc.ch == '}') {
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sc.SetState(SCE_ESCRIPT_BRACE);
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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 int classifyFoldPointESCRIPT(const char* s, const char* prevWord) {
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int lev = 0;
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if (strcmp(prevWord, "end") == 0) return lev;
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if ((strcmp(prevWord, "else") == 0 && strcmp(s, "if") == 0) || strcmp(s, "elseif") == 0)
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return -1;
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if (strcmp(s, "for") == 0 || strcmp(s, "foreach") == 0
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|| strcmp(s, "program") == 0 || strcmp(s, "function") == 0
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|| strcmp(s, "while") == 0 || strcmp(s, "case") == 0
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|| strcmp(s, "if") == 0 ) {
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lev = 1;
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} else if ( strcmp(s, "endfor") == 0 || strcmp(s, "endforeach") == 0
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|| strcmp(s, "endprogram") == 0 || strcmp(s, "endfunction") == 0
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|| strcmp(s, "endwhile") == 0 || strcmp(s, "endcase") == 0
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|| strcmp(s, "endif") == 0 ) {
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lev = -1;
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}
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return lev;
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}
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static bool IsStreamCommentStyle(int style) {
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return style == SCE_ESCRIPT_COMMENT ||
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style == SCE_ESCRIPT_COMMENTDOC ||
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style == SCE_ESCRIPT_COMMENTLINE;
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}
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static void FoldESCRIPTDoc(unsigned int startPos, int length, int initStyle, WordList *[], Accessor &styler) {
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//~ bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
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// Do not know how to fold the comment at the moment.
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bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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bool foldComment = true;
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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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int lastStart = 0;
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char prevWord[32] = "";
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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 && IsStreamCommentStyle(style)) {
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if (!IsStreamCommentStyle(stylePrev)) {
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levelCurrent++;
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} else if (!IsStreamCommentStyle(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 (foldComment && (style == SCE_ESCRIPT_COMMENTLINE)) {
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if ((ch == '/') && (chNext == '/')) {
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char chNext2 = styler.SafeGetCharAt(i + 2);
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if (chNext2 == '{') {
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levelCurrent++;
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} else if (chNext2 == '}') {
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levelCurrent--;
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}
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}
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}
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if (stylePrev == SCE_ESCRIPT_DEFAULT && style == SCE_ESCRIPT_WORD3)
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{
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// Store last word start point.
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lastStart = i;
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}
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if (style == SCE_ESCRIPT_WORD3) {
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if(iswordchar(ch) && !iswordchar(chNext)) {
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char s[32];
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unsigned int j;
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for(j = 0; ( j < 31 ) && ( j < i-lastStart+1 ); j++) {
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s[j] = static_cast<char>(tolower(styler[lastStart + j]));
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}
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s[j] = '\0';
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levelCurrent += classifyFoldPointESCRIPT(s, prevWord);
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strcpy(prevWord, s);
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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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strcpy(prevWord, "");
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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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static const char * const ESCRIPTWordLists[] = {
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"Primary keywords and identifiers",
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"Intrinsic functions",
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"Extended and user defined functions",
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0,
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};
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LexerModule lmESCRIPT(SCLEX_ESCRIPT, ColouriseESCRIPTDoc, "escript", FoldESCRIPTDoc, ESCRIPTWordLists);
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