aboutsummaryrefslogtreecommitdiffhomepage
path: root/src/LexCPP.cxx
diff options
context:
space:
mode:
Diffstat (limited to 'src/LexCPP.cxx')
-rw-r--r--src/LexCPP.cxx240
1 files changed, 240 insertions, 0 deletions
diff --git a/src/LexCPP.cxx b/src/LexCPP.cxx
new file mode 100644
index 000000000..c6d56702e
--- /dev/null
+++ b/src/LexCPP.cxx
@@ -0,0 +1,240 @@
+// SciTE - Scintilla based Text Editor
+// LexCPP.cxx - lexer for C++, C, Java, and Javascript
+// Copyright 1998-2000 by Neil Hodgson <neilh@scintilla.org>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#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"
+
+static void classifyWordCpp(unsigned int start, unsigned int end, WordList &keywords, StylingContext &styler) {
+ char s[100];
+ bool wordIsNumber = isdigit(styler[start]) || (styler[start] == '.');
+ for (unsigned int i = 0; i < end - start + 1 && i < 30; i++) {
+ s[i] = styler[start + i];
+ s[i + 1] = '\0';
+ }
+ char chAttr = SCE_C_IDENTIFIER;
+ if (wordIsNumber)
+ chAttr = SCE_C_NUMBER;
+ else {
+ if (keywords.InList(s))
+ chAttr = SCE_C_WORD;
+ }
+ styler.ColourTo(end, chAttr);
+}
+
+static void ColouriseCppDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ StylingContext &styler) {
+
+ WordList &keywords = *keywordlists[0];
+
+ styler.StartAt(startPos);
+
+ bool fold = styler.GetPropSet().GetInt("fold");
+ int lineCurrent = styler.GetLine(startPos);
+ int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK;
+ int levelCurrent = levelPrev;
+
+ int state = initStyle;
+ char chPrev = ' ';
+ char chNext = styler[startPos];
+ unsigned int lengthDoc = startPos + length;
+ int visChars = 0;
+ styler.StartSegment(startPos);
+ for (unsigned int i = startPos; i <= lengthDoc; i++) {
+ char ch = chNext;
+ chNext = styler.SafeGetCharAt(i + 1);
+
+ if ((fold) && ((ch == '\r' && chNext != '\n') || (ch == '\n'))) {
+ int lev = levelPrev;
+ if (visChars == 0)
+ lev |= SC_FOLDLEVELWHITEFLAG;
+ if ((levelCurrent > levelPrev) && (visChars > 0))
+ lev |= SC_FOLDLEVELHEADERFLAG;
+ styler.SetLevel(lineCurrent, lev);
+ lineCurrent++;
+ visChars = 0;
+ levelPrev = levelCurrent;
+ }
+ if (!isspace(ch))
+ visChars++;
+
+ if (styler.IsLeadByte(ch)) {
+ chNext = styler.SafeGetCharAt(i + 2);
+ chPrev = ' ';
+ i += 1;
+ continue;
+ }
+
+ if (state == SCE_C_STRINGEOL) {
+ if (ch != '\r' && ch != '\n') {
+ styler.ColourTo(i-1, state);
+ state = SCE_C_DEFAULT;
+ }
+ }
+ if (state == SCE_C_DEFAULT) {
+ if (iswordstart(ch)) {
+ styler.ColourTo(i-1, state);
+ state = SCE_C_WORD;
+ } else if (ch == '/' && chNext == '*') {
+ styler.ColourTo(i-1, state);
+ if (styler.SafeGetCharAt(i + 2) == '*')
+ state = SCE_C_COMMENTDOC;
+ else
+ state = SCE_C_COMMENT;
+ } 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;
+ } else if (ch == '#') {
+ styler.ColourTo(i-1, state);
+ state = SCE_C_PREPROCESSOR;
+ } else if (isoperator(ch)) {
+ styler.ColourTo(i-1, state);
+ styler.ColourTo(i, SCE_C_OPERATOR);
+ if ((ch == '{') || (ch == '}')) {
+ levelCurrent += (ch == '{') ? 1 : -1;
+ }
+ }
+ } else if (state == SCE_C_WORD) {
+ if (!iswordchar(ch)) {
+ classifyWordCpp(styler.GetStartSegment(), i - 1, keywords, styler);
+ state = SCE_C_DEFAULT;
+ if (ch == '/' && chNext == '*') {
+ if (styler.SafeGetCharAt(i + 2) == '*')
+ state = SCE_C_COMMENTDOC;
+ else
+ state = SCE_C_COMMENT;
+ } else if (ch == '/' && chNext == '/') {
+ state = SCE_C_COMMENTLINE;
+ } else if (ch == '\"') {
+ state = SCE_C_STRING;
+ } else if (ch == '\'') {
+ state = SCE_C_CHARACTER;
+ } else if (ch == '#') {
+ state = SCE_C_PREPROCESSOR;
+ } else if (isoperator(ch)) {
+ styler.ColourTo(i, SCE_C_OPERATOR);
+ if ((ch == '{') || (ch == '}')) {
+ levelCurrent += (ch == '{') ? 1 : -1;
+ }
+ }
+ }
+ } else {
+ if (state == SCE_C_PREPROCESSOR) {
+ if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
+ styler.ColourTo(i-1, state);
+ state = SCE_C_DEFAULT;
+ }
+ } else if (state == SCE_C_COMMENT) {
+ if (ch == '/' && chPrev == '*') {
+ if (((i > styler.GetStartSegment() + 2) || (
+ (initStyle == SCE_C_COMMENT) &&
+ (styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) {
+ styler.ColourTo(i, state);
+ state = SCE_C_DEFAULT;
+ }
+ }
+ } else if (state == SCE_C_COMMENTDOC) {
+ if (ch == '/' && chPrev == '*') {
+ if (((i > styler.GetStartSegment() + 3) || (
+ (initStyle == SCE_C_COMMENTDOC) &&
+ (styler.GetStartSegment() == static_cast<unsigned int>(startPos))))) {
+ styler.ColourTo(i, state);
+ state = SCE_C_DEFAULT;
+ }
+ }
+ } else if (state == SCE_C_COMMENTLINE) {
+ if (ch == '\r' || ch == '\n') {
+ styler.ColourTo(i-1, state);
+ state = SCE_C_DEFAULT;
+ }
+ } else if (state == SCE_C_STRING) {
+ if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
+ styler.ColourTo(i-1, state);
+ 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;
+ i++;
+ ch = chNext;
+ chNext = styler.SafeGetCharAt(i + 1);
+ }
+ } else if (state == SCE_C_CHARACTER) {
+ if ((ch == '\r' || ch == '\n') && (chPrev != '\\')) {
+ styler.ColourTo(i-1, state);
+ 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;
+ i++;
+ ch = chNext;
+ chNext = styler.SafeGetCharAt(i + 1);
+ }
+ }
+ if (state == SCE_C_DEFAULT) { // One of the above succeeded
+ if (ch == '/' && chNext == '*') {
+ if (styler.SafeGetCharAt(i + 2) == '*')
+ state = SCE_C_COMMENTDOC;
+ else
+ state = SCE_C_COMMENT;
+ } else if (ch == '/' && chNext == '/') {
+ state = SCE_C_COMMENTLINE;
+ } else if (ch == '\"') {
+ state = SCE_C_STRING;
+ } else if (ch == '\'') {
+ state = SCE_C_CHARACTER;
+ } else if (ch == '#') {
+ state = SCE_C_PREPROCESSOR;
+ } else if (iswordstart(ch)) {
+ state = SCE_C_WORD;
+ } else if (isoperator(ch)) {
+ styler.ColourTo(i, SCE_C_OPERATOR);
+ if ((ch == '{') || (ch == '}')) {
+ levelCurrent += (ch == '{') ? 1 : -1;
+ }
+ }
+ }
+ }
+ 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, levelCurrent | flagsNext);
+ styler.SetLevel(lineCurrent, levelPrev | flagsNext);
+
+ }
+}
+
+static LexerModule lmCPP(SCLEX_CPP, ColouriseCppDoc);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-26 00:22:29 +0000