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-rw-r--r--src/LexTAL.cxx396
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-// Scintilla source code edit control
-/** @file LexTAL.cxx
- ** Lexer for TAL
- ** Based on LexPascal.cxx
- ** Written by Laurent le Tynevez
- ** Updated by Simon Steele <s.steele@pnotepad.org> September 2002
- ** Updated by Mathias Rauen <scite@madshi.net> May 2003 (Delphi adjustments)
- ** Updated by Rod Falck, Aug 2006 Converted to TAL
- **/
-
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <stdio.h>
-#include <stdarg.h>
-
-#include "Platform.h"
-
-#include "PropSet.h"
-#include "Accessor.h"
-#include "KeyWords.h"
-#include "Scintilla.h"
-#include "SciLexer.h"
-#include "StyleContext.h"
-
-#ifdef SCI_NAMESPACE
-using namespace Scintilla;
-#endif
-
-inline bool isTALoperator(char ch)
- {
- return ch == '\'' || ch == '@' || ch == '#' || isoperator(ch);
- }
-
-inline bool isTALwordchar(char ch)
- {
- return ch == '$' || ch == '^' || iswordchar(ch);
- }
-
-inline bool isTALwordstart(char ch)
- {
- return ch == '$' || ch == '^' || iswordstart(ch);
- }
-
-static void getRange(unsigned int start,
- unsigned int end,
- Accessor &styler,
- char *s,
- unsigned int len) {
- unsigned int i = 0;
- while ((i < end - start + 1) && (i < len-1)) {
- s[i] = static_cast<char>(tolower(styler[start + i]));
- i++;
- }
- s[i] = '\0';
-}
-
-static bool IsStreamCommentStyle(int style) {
- return style == SCE_C_COMMENT ||
- style == SCE_C_COMMENTDOC ||
- style == SCE_C_COMMENTDOCKEYWORD ||
- style == SCE_C_COMMENTDOCKEYWORDERROR;
-}
-
-static void ColourTo(Accessor &styler, unsigned int end, unsigned int attr, bool bInAsm) {
- if ((bInAsm) && (attr == SCE_C_OPERATOR || attr == SCE_C_NUMBER || attr == SCE_C_DEFAULT || attr == SCE_C_WORD || attr == SCE_C_IDENTIFIER)) {
- styler.ColourTo(end, SCE_C_REGEX);
- } else
- styler.ColourTo(end, attr);
-}
-
-// returns 1 if the item starts a class definition, and -1 if the word is "end", and 2 if the word is "asm"
-static int classifyWordTAL(unsigned int start, unsigned int end, /*WordList &keywords*/WordList *keywordlists[], Accessor &styler, bool bInAsm) {
- int ret = 0;
-
- WordList& keywords = *keywordlists[0];
- WordList& builtins = *keywordlists[1];
- WordList& nonreserved_keywords = *keywordlists[2];
-
- char s[100];
- getRange(start, end, styler, s, sizeof(s));
-
- char chAttr = SCE_C_IDENTIFIER;
- if (isdigit(s[0]) || (s[0] == '.')) {
- chAttr = SCE_C_NUMBER;
- }
- else {
- if (keywords.InList(s)) {
- chAttr = SCE_C_WORD;
-
- if (strcmp(s, "asm") == 0) {
- ret = 2;
- }
- else if (strcmp(s, "end") == 0) {
- ret = -1;
- }
- }
- else if (s[0] == '$' || builtins.InList(s)) {
- chAttr = SCE_C_WORD2;
- }
- else if (nonreserved_keywords.InList(s)) {
- chAttr = SCE_C_UUID;
- }
- }
- ColourTo(styler, end, chAttr, (bInAsm && ret != -1));
- return ret;
-}
-
-static int classifyFoldPointTAL(const char* s) {
- int lev = 0;
- if (!(isdigit(s[0]) || (s[0] == '.'))) {
- if (strcmp(s, "begin") == 0 ||
- strcmp(s, "block") == 0) {
- lev=1;
- } else if (strcmp(s, "end") == 0) {
- lev=-1;
- }
- }
- return lev;
-}
-
-static void ColouriseTALDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
- Accessor &styler) {
-
- styler.StartAt(startPos);
-
- int state = initStyle;
- if (state == SCE_C_CHARACTER) // Does not leak onto next line
- state = SCE_C_DEFAULT;
- char chPrev = ' ';
- char chNext = styler[startPos];
- unsigned int lengthDoc = startPos + length;
-
- bool bInClassDefinition;
-
- int currentLine = styler.GetLine(startPos);
- if (currentLine > 0) {
- styler.SetLineState(currentLine, styler.GetLineState(currentLine-1));
- bInClassDefinition = (styler.GetLineState(currentLine) == 1);
- } else {
- styler.SetLineState(currentLine, 0);
- bInClassDefinition = false;
- }
-
- bool bInAsm = (state == SCE_C_REGEX);
- if (bInAsm)
- state = SCE_C_DEFAULT;
-
- styler.StartSegment(startPos);
- int visibleChars = 0;
- for (unsigned int i = startPos; i < lengthDoc; i++) {
- char ch = chNext;
-
- chNext = styler.SafeGetCharAt(i + 1);
-
- if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
- // Trigger on CR only (Mac style) or either on LF from CR+LF (Dos/Win) or on LF alone (Unix)
- // Avoid triggering two times on Dos/Win
- // End of line
- if (state == SCE_C_CHARACTER) {
- ColourTo(styler, i, state, bInAsm);
- state = SCE_C_DEFAULT;
- }
- visibleChars = 0;
- currentLine++;
- styler.SetLineState(currentLine, (bInClassDefinition ? 1 : 0));
- }
-
- if (styler.IsLeadByte(ch)) {
- chNext = styler.SafeGetCharAt(i + 2);
- chPrev = ' ';
- i += 1;
- continue;
- }
-
- if (state == SCE_C_DEFAULT) {
- if (isTALwordstart(ch)) {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_IDENTIFIER;
- } else if (ch == '!' && chNext != '*') {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_COMMENT;
- } else if (ch == '!' && chNext == '*') {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_COMMENTDOC;
- } else if (ch == '-' && chNext == '-') {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_COMMENTLINE;
- } else if (ch == '"') {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_STRING;
- } else if (ch == '?' && visibleChars == 0) {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_PREPROCESSOR;
- } else if (isTALoperator(ch)) {
- ColourTo(styler, i-1, state, bInAsm);
- ColourTo(styler, i, SCE_C_OPERATOR, bInAsm);
- }
- } else if (state == SCE_C_IDENTIFIER) {
- if (!isTALwordchar(ch)) {
- int lStateChange = classifyWordTAL(styler.GetStartSegment(), i - 1, keywordlists, styler, bInAsm);
-
- if(lStateChange == 1) {
- styler.SetLineState(currentLine, 1);
- bInClassDefinition = true;
- } else if(lStateChange == 2) {
- bInAsm = true;
- } else if(lStateChange == -1) {
- styler.SetLineState(currentLine, 0);
- bInClassDefinition = false;
- bInAsm = false;
- }
-
- state = SCE_C_DEFAULT;
- chNext = styler.SafeGetCharAt(i + 1);
- if (ch == '!' && chNext != '*') {
- state = SCE_C_COMMENT;
- } else if (ch == '!' && chNext == '*') {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_COMMENTDOC;
- } else if (ch == '-' && chNext == '-') {
- state = SCE_C_COMMENTLINE;
- } else if (ch == '"') {
- state = SCE_C_STRING;
- } else if (isTALoperator(ch)) {
- ColourTo(styler, i, SCE_C_OPERATOR, bInAsm);
- }
- }
- } else {
- if (state == SCE_C_PREPROCESSOR) {
- if ((ch == '\r' || ch == '\n') && !(chPrev == '\\' || chPrev == '\r')) {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_DEFAULT;
- }
- } else if (state == SCE_C_COMMENT) {
- if (ch == '!' || (ch == '\r' || ch == '\n') ) {
- ColourTo(styler, i, state, bInAsm);
- state = SCE_C_DEFAULT;
- }
- } else if (state == SCE_C_COMMENTDOC) {
- if (ch == '!' || (ch == '\r' || ch == '\n')) {
- if (((i > styler.GetStartSegment() + 2) || (
- (initStyle == SCE_C_COMMENTDOC) &&
- (styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) {
- ColourTo(styler, i, state, bInAsm);
- state = SCE_C_DEFAULT;
- }
- }
- } else if (state == SCE_C_COMMENTLINE) {
- if (ch == '\r' || ch == '\n') {
- ColourTo(styler, i-1, state, bInAsm);
- state = SCE_C_DEFAULT;
- }
- } else if (state == SCE_C_STRING) {
- if (ch == '"') {
- ColourTo(styler, i, state, bInAsm);
- state = SCE_C_DEFAULT;
- }
- }
- }
- if (!isspacechar(ch))
- visibleChars++;
- chPrev = ch;
- }
- ColourTo(styler, lengthDoc - 1, state, bInAsm);
-}
-
-static void FoldTALDoc(unsigned int startPos, int length, int initStyle, WordList *[],
- Accessor &styler) {
- bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
- bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
- bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
- unsigned int endPos = startPos + length;
- int visibleChars = 0;
- int lineCurrent = styler.GetLine(startPos);
- int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
- int levelCurrent = levelPrev;
- char chNext = styler[startPos];
- int styleNext = styler.StyleAt(startPos);
- int style = initStyle;
- bool was_end = false;
- bool section = false;
-
- int lastStart = 0;
-
- for (unsigned int i = startPos; i < endPos; i++) {
- char ch = chNext;
- chNext = styler.SafeGetCharAt(i + 1);
- int stylePrev = style;
- style = styleNext;
- styleNext = styler.StyleAt(i + 1);
- bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
-
- if (stylePrev == SCE_C_DEFAULT && (style == SCE_C_WORD || style == SCE_C_UUID || style == SCE_C_PREPROCESSOR))
- {
- // Store last word start point.
- lastStart = i;
- }
-
- if (stylePrev == SCE_C_WORD || style == SCE_C_UUID || stylePrev == SCE_C_PREPROCESSOR) {
- if(isTALwordchar(ch) && !isTALwordchar(chNext)) {
- char s[100];
- getRange(lastStart, i, styler, s, sizeof(s));
- if (stylePrev == SCE_C_PREPROCESSOR && strcmp(s, "?section") == 0)
- {
- section = true;
- levelCurrent = 1;
- levelPrev = 0;
- }
- else if (stylePrev == SCE_C_WORD || stylePrev == SCE_C_UUID)
- {
- if (strcmp(s, "block") == 0)
- {
- // block keyword is ignored immediately after end keyword
- if (!was_end)
- levelCurrent++;
- }
- else
- levelCurrent += classifyFoldPointTAL(s);
- if (strcmp(s, "end") == 0)
- {
- was_end = true;
- }
- else
- {
- was_end = false;
- }
- }
- }
- }
-
- if (foldComment && (style == SCE_C_COMMENTLINE)) {
- if ((ch == '/') && (chNext == '/')) {
- char chNext2 = styler.SafeGetCharAt(i + 2);
- if (chNext2 == '{') {
- levelCurrent++;
- } else if (chNext2 == '}') {
- levelCurrent--;
- }
- }
- }
-
- if (foldPreprocessor && (style == SCE_C_PREPROCESSOR)) {
- if (ch == '{' && chNext == '$') {
- unsigned int j=i+2; // skip {$
- while ((j<endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
- j++;
- }
- if (styler.Match(j, "region") || styler.Match(j, "if")) {
- levelCurrent++;
- } else if (styler.Match(j, "end")) {
- levelCurrent--;
- }
- }
- }
-
- if (foldComment && IsStreamCommentStyle(style)) {
- if (!IsStreamCommentStyle(stylePrev)) {
- levelCurrent++;
- } else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
- // Comments don't end at end of line and the next character may be unstyled.
- levelCurrent--;
- }
- }
-
- if (atEOL) {
- int lev = levelPrev | SC_FOLDLEVELBASE;
- if (visibleChars == 0 && foldCompact)
- lev |= SC_FOLDLEVELWHITEFLAG;
- if ((levelCurrent > levelPrev || section) && (visibleChars > 0))
- lev |= SC_FOLDLEVELHEADERFLAG;
- if (lev != styler.LevelAt(lineCurrent)) {
- styler.SetLevel(lineCurrent, lev);
- }
- lineCurrent++;
- levelPrev = levelCurrent;
- visibleChars = 0;
- section = false;
- }
-
- if (!isspacechar(ch))
- visibleChars++;
- }
-
- // Fill in the real level of the next line, keeping the current flags as they will be filled in later
- int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
- styler.SetLevel(lineCurrent, levelPrev | flagsNext);
-}
-
-static const char * const TALWordListDesc[] = {
- "Keywords",
- "Builtins",
- 0
-};
-
-LexerModule lmTAL(SCLEX_TAL, ColouriseTALDoc, "TAL", FoldTALDoc, TALWordListDesc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-11 23:16:11 +0000