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Diffstat (limited to 'scintilla/src/LexTAL.cxx')
| -rw-r--r-- | scintilla/src/LexTAL.cxx | 396 |
1 files changed, 396 insertions, 0 deletions
diff --git a/scintilla/src/LexTAL.cxx b/scintilla/src/LexTAL.cxx new file mode 100644 index 0000000..c4dfa8e --- /dev/null +++ b/scintilla/src/LexTAL.cxx @@ -0,0 +1,396 @@ +// 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);
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