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-rw-r--r--src/LexPascal.cxx240
1 files changed, 179 insertions, 61 deletions
diff --git a/src/LexPascal.cxx b/src/LexPascal.cxx
index 2f2be32e4..37e5e995f 100644
--- a/src/LexPascal.cxx
+++ b/src/LexPascal.cxx
@@ -2,6 +2,7 @@
/** @file LexPascal.cxx
** Lexer for Pascal.
** Written by Laurent le Tynevez
+ ** Updated by Simon Steele <s.steele@pnotepad.org> September 2002
**/
#include <stdlib.h>
@@ -17,45 +18,86 @@
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"
+#include "StyleContext.h"
-static int classifyWordPascal(unsigned int start, unsigned int end, WordList &keywords, Accessor &styler) {
- char s[100];
- for (unsigned int i = 0; i < end - start + 1 && i < 30; i++) {
+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]));
- s[i + 1] = '\0';
+ i++;
}
- int lev= 0;
+ 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 inline bool IsAWordChar(const int ch) {
+ return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_');
+}
+
+// returns 1 if the item starts a class definition, and -1 if the word is "end".
+static int classifyWordPascal(unsigned int start, unsigned int end, /*WordList &keywords*/WordList *keywordlists[], Accessor &styler, bool bInClass) {
+ int ret = 0;
+
+ WordList& keywords = *keywordlists[0];
+ WordList& classwords = *keywordlists[1];
+
+ char s[100];
+ getRange(start, end, styler, s, sizeof(s));
+
char chAttr = SCE_C_IDENTIFIER;
- if (isdigit(s[0]) || (s[0] == '.')){
+ if (isdigit(s[0]) || (s[0] == '.')) {
chAttr = SCE_C_NUMBER;
}
else {
if (keywords.InList(s)) {
chAttr = SCE_C_WORD;
- if (strcmp(s, "begin") == 0 ||
- strcmp(s, "object") == 0 ||
- strcmp(s,"case") == 0) {
- lev=1;
- } else if (strcmp(s, "end") == 0) {
- lev=-1;
+
+ if(strcmp(s, "class") == 0)
+ ret = 1;
+ else if(strcmp(s, "end") == 0)
+ ret = -1;
+ } else if (bInClass) {
+ if (classwords.InList(s)) {
+ chAttr = SCE_C_WORD;
}
}
}
styler.ColourTo(end, chAttr);
+ return ret;
+}
+
+static int classifyFoldPointPascal(const char* s) {
+ int lev = 0;
+ if (!(isdigit(s[0]) || (s[0] == '.'))) {
+ if (strcmp(s, "begin") == 0 ||
+ strcmp(s, "object") == 0 ||
+ strcmp(s, "case") == 0 ||
+ strcmp(s, "class") == 0 ||
+ strcmp(s, "record") == 0 ||
+ strcmp(s, "try") == 0) {
+ lev=1;
+ } else if (strcmp(s, "end") == 0) {
+ lev=-1;
+ }
+ }
return lev;
}
static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
Accessor &styler) {
- WordList &keywords = *keywordlists[0];
styler.StartAt(startPos);
- bool fold = styler.GetPropertyInt("fold") != 0;
- int lineCurrent = styler.GetLine(startPos);
- int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
- int levelCurrent = levelPrev;
-
int state = initStyle;
if (state == SCE_C_STRINGEOL) // Does not leak onto next line
state = SCE_C_DEFAULT;
@@ -63,9 +105,21 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
char chNext = styler[startPos];
unsigned int lengthDoc = startPos + length;
int visibleChars = 0;
+
+ 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;
+ }
+
styler.StartSegment(startPos);
for (unsigned int i = startPos; i < lengthDoc; i++) {
char ch = chNext;
+
chNext = styler.SafeGetCharAt(i + 1);
if ((ch == '\r' && chNext != '\n') || (ch == '\n')) {
@@ -76,17 +130,9 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
styler.ColourTo(i, state);
state = SCE_C_DEFAULT;
}
- if (fold) {
- int lev = levelPrev;
- if (visibleChars == 0)
- lev |= SC_FOLDLEVELWHITEFLAG;
- if ((levelCurrent > levelPrev) && (visibleChars > 0))
- lev |= SC_FOLDLEVELHEADERFLAG;
- styler.SetLevel(lineCurrent, lev);
- lineCurrent++;
- levelPrev = levelCurrent;
- }
visibleChars = 0;
+ currentLine++;
+ styler.SetLineState(currentLine, (bInClassDefinition ? 1 : 0));
}
if (!isspacechar(ch))
visibleChars++;
@@ -113,9 +159,6 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
} else if (ch == '/' && chNext == '/') {
styler.ColourTo(i-1, state);
state = SCE_C_COMMENTLINE;
- } else if (ch == '\"') {
- styler.ColourTo(i-1, state);
- state = SCE_C_STRING;
} else if (ch == '\'') {
styler.ColourTo(i-1, state);
state = SCE_C_CHARACTER;
@@ -129,7 +172,16 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
}
} else if (state == SCE_C_IDENTIFIER) {
if (!iswordchar(ch)) {
- int levelChange = classifyWordPascal(styler.GetStartSegment(), i - 1, keywords, styler);
+ int lStateChange = classifyWordPascal(styler.GetStartSegment(), i - 1, keywordlists, styler, bInClassDefinition);
+
+ if(lStateChange == 1) {
+ styler.SetLineState(currentLine, 1);
+ bInClassDefinition = true;
+ } else if(lStateChange == -1) {
+ styler.SetLineState(currentLine, 0);
+ bInClassDefinition = false;
+ }
+
state = SCE_C_DEFAULT;
chNext = styler.SafeGetCharAt(i + 1);
if (ch == '{' && chNext != '$' && chNext != '&') {
@@ -141,14 +193,11 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
state = SCE_C_COMMENTDOC;
} else if (ch == '/' && chNext == '/') {
state = SCE_C_COMMENTLINE;
- } else if (ch == '\"') {
- state = SCE_C_STRING;
} else if (ch == '\'') {
state = SCE_C_CHARACTER;
} else if (isoperator(ch)) {
styler.ColourTo(i, SCE_C_OPERATOR);
}
- levelCurrent+=levelChange;
}
} else {
if (state == SCE_C_PREPROCESSOR) {
@@ -180,30 +229,10 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
styler.ColourTo(i-1, state);
state = SCE_C_DEFAULT;
}
- } else if (state == SCE_C_STRING) {
- if (ch == '\\') {
- if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
- i++;
- ch = chNext;
- chNext = styler.SafeGetCharAt(i + 1);
- }
- } else if (ch == '\"') {
- styler.ColourTo(i, state);
- state = SCE_C_DEFAULT;
- } else if (chNext == '\r' || chNext == '\n') {
- styler.ColourTo(i-1, SCE_C_STRINGEOL);
- state = SCE_C_STRINGEOL;
- }
} else if (state == SCE_C_CHARACTER) {
- if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
+ if ((ch == '\r' || ch == '\n')) {
styler.ColourTo(i-1, SCE_C_STRINGEOL);
state = SCE_C_STRINGEOL;
- } else if (ch == '\\') {
- if (chNext == '\"' || chNext == '\'' || chNext == '\\') {
- i++;
- ch = chNext;
- chNext = styler.SafeGetCharAt(i + 1);
- }
} else if (ch == '\'') {
styler.ColourTo(i, state);
state = SCE_C_DEFAULT;
@@ -213,12 +242,101 @@ static void ColourisePascalDoc(unsigned int startPos, int length, int initStyle,
chPrev = ch;
}
styler.ColourTo(lengthDoc - 1, state);
+}
- // Fill in the real level of the next line, keeping the current flags as they will be filled in later
- if (fold) {
- int flagsNext = styler.LevelAt(lineCurrent) & ~SC_FOLDLEVELNUMBERMASK;
- styler.SetLevel(lineCurrent, levelPrev | flagsNext);
+static void FoldPascalDoc(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;
+
+ 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)
+ {
+ // Store last word start point.
+ lastStart = i;
+ }
+
+ if (stylePrev == SCE_C_WORD) {
+ if(iswordchar(ch) && !iswordchar(chNext)) {
+ char s[100];
+ getRange(lastStart, i, styler, s, sizeof(s));
+ levelCurrent += classifyFoldPointPascal(s);
+ }
+ }
+
+ 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;
+ if (visibleChars == 0 && foldCompact)
+ lev |= SC_FOLDLEVELWHITEFLAG;
+ if ((levelCurrent > levelPrev) && (visibleChars > 0))
+ lev |= SC_FOLDLEVELHEADERFLAG;
+ if (lev != styler.LevelAt(lineCurrent)) {
+ styler.SetLevel(lineCurrent, lev);
+ }
+ lineCurrent++;
+ levelPrev = levelCurrent;
+ visibleChars = 0;
+ }
+
+ 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);
}
-LexerModule lmPascal(SCLEX_PASCAL, ColourisePascalDoc, "pascal");
+LexerModule lmPascal(SCLEX_PASCAL, ColourisePascalDoc, "pascal", FoldPascalDoc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-11 21:22:43 +0000