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diff --git a/src/LexCPP.cxx b/src/LexCPP.cxx
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-// Scintilla source code edit control
-/** @file LexCPP.cxx
- ** Lexer for C++, C, Java, and JavaScript.
- **/
-// Copyright 1998-2005 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 "StyleContext.h"
-#include "KeyWords.h"
-#include "Scintilla.h"
-#include "SciLexer.h"
-#include "CharacterSet.h"
-
-#ifdef SCI_NAMESPACE
-using namespace Scintilla;
-#endif
-
-static bool IsSpaceEquiv(int state) {
- return (state <= SCE_C_COMMENTDOC) ||
- // including SCE_C_DEFAULT, SCE_C_COMMENT, SCE_C_COMMENTLINE
- (state == SCE_C_COMMENTLINEDOC) || (state == SCE_C_COMMENTDOCKEYWORD) ||
- (state == SCE_C_COMMENTDOCKEYWORDERROR);
-}
-
-// Preconditions: sc.currentPos points to a character after '+' or '-'.
-// The test for pos reaching 0 should be redundant,
-// and is in only for safety measures.
-// Limitation: this code will give the incorrect answer for code like
-// a = b+++/ptn/...
-// Putting a space between the '++' post-inc operator and the '+' binary op
-// fixes this, and is highly recommended for readability anyway.
-static bool FollowsPostfixOperator(StyleContext &sc, Accessor &styler) {
- int pos = (int) sc.currentPos;
- while (--pos > 0) {
- char ch = styler[pos];
- if (ch == '+' || ch == '-') {
- return styler[pos - 1] == ch;
- }
- }
- return false;
-}
-
-static void ColouriseCppDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
- Accessor &styler, bool caseSensitive) {
-
- WordList &keywords = *keywordlists[0];
- WordList &keywords2 = *keywordlists[1];
- WordList &keywords3 = *keywordlists[2];
- WordList &keywords4 = *keywordlists[3];
-
- // property styling.within.preprocessor
- // For C++ code, determines whether all preprocessor code is styled in the preprocessor style (0, the default)
- // or only from the initial # to the end of the command word(1).
- bool stylingWithinPreprocessor = styler.GetPropertyInt("styling.within.preprocessor") != 0;
-
- CharacterSet setOKBeforeRE(CharacterSet::setNone, "([{=,:;!%^&*|?~+-");
- CharacterSet setCouldBePostOp(CharacterSet::setNone, "+-");
-
- CharacterSet setDoxygen(CharacterSet::setAlpha, "$@\\&<>#{}[]");
-
- CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);
- CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
-
- // property lexer.cpp.allow.dollars
- // Set to 0 to disallow the '$' character in identifiers with the cpp lexer.
- if (styler.GetPropertyInt("lexer.cpp.allow.dollars", 1) != 0) {
- setWordStart.Add('$');
- setWord.Add('$');
- }
-
- int chPrevNonWhite = ' ';
- int visibleChars = 0;
- bool lastWordWasUUID = false;
- int styleBeforeDCKeyword = SCE_C_DEFAULT;
- bool continuationLine = false;
- bool isIncludePreprocessor = false;
-
- if (initStyle == SCE_C_PREPROCESSOR) {
- // Set continuationLine if last character of previous line is '\'
- int lineCurrent = styler.GetLine(startPos);
- if (lineCurrent > 0) {
- int chBack = styler.SafeGetCharAt(startPos-1, 0);
- int chBack2 = styler.SafeGetCharAt(startPos-2, 0);
- int lineEndChar = '!';
- if (chBack2 == '\r' && chBack == '\n') {
- lineEndChar = styler.SafeGetCharAt(startPos-3, 0);
- } else if (chBack == '\n' || chBack == '\r') {
- lineEndChar = chBack2;
- }
- continuationLine = lineEndChar == '\\';
- }
- }
-
- // look back to set chPrevNonWhite properly for better regex colouring
- if (startPos > 0) {
- int back = startPos;
- while (--back && IsSpaceEquiv(styler.StyleAt(back)))
- ;
- if (styler.StyleAt(back) == SCE_C_OPERATOR) {
- chPrevNonWhite = styler.SafeGetCharAt(back);
- }
- }
-
- StyleContext sc(startPos, length, initStyle, styler);
-
- for (; sc.More(); sc.Forward()) {
-
- if (sc.atLineStart) {
- if (sc.state == SCE_C_STRING) {
- // Prevent SCE_C_STRINGEOL from leaking back to previous line which
- // ends with a line continuation by locking in the state upto this position.
- sc.SetState(SCE_C_STRING);
- }
- // Reset states to begining of colourise so no surprises
- // if different sets of lines lexed.
- visibleChars = 0;
- lastWordWasUUID = false;
- isIncludePreprocessor = false;
- }
-
- // Handle line continuation generically.
- if (sc.ch == '\\') {
- if (sc.chNext == '\n' || sc.chNext == '\r') {
- sc.Forward();
- if (sc.ch == '\r' && sc.chNext == '\n') {
- sc.Forward();
- }
- continuationLine = true;
- continue;
- }
- }
-
- // Determine if the current state should terminate.
- switch (sc.state) {
- case SCE_C_OPERATOR:
- sc.SetState(SCE_C_DEFAULT);
- break;
- case SCE_C_NUMBER:
- // We accept almost anything because of hex. and number suffixes
- if (!setWord.Contains(sc.ch)) {
- sc.SetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_IDENTIFIER:
- if (!setWord.Contains(sc.ch) || (sc.ch == '.')) {
- char s[1000];
- if (caseSensitive) {
- sc.GetCurrent(s, sizeof(s));
- } else {
- sc.GetCurrentLowered(s, sizeof(s));
- }
- if (keywords.InList(s)) {
- lastWordWasUUID = strcmp(s, "uuid") == 0;
- sc.ChangeState(SCE_C_WORD);
- } else if (keywords2.InList(s)) {
- sc.ChangeState(SCE_C_WORD2);
- } else if (keywords4.InList(s)) {
- sc.ChangeState(SCE_C_GLOBALCLASS);
- }
- sc.SetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_PREPROCESSOR:
- if (sc.atLineStart && !continuationLine) {
- sc.SetState(SCE_C_DEFAULT);
- } else if (stylingWithinPreprocessor) {
- if (IsASpace(sc.ch)) {
- sc.SetState(SCE_C_DEFAULT);
- }
- } else {
- if (sc.Match('/', '*') || sc.Match('/', '/')) {
- sc.SetState(SCE_C_DEFAULT);
- }
- }
- break;
- case SCE_C_COMMENT:
- if (sc.Match('*', '/')) {
- sc.Forward();
- sc.ForwardSetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_COMMENTDOC:
- if (sc.Match('*', '/')) {
- sc.Forward();
- sc.ForwardSetState(SCE_C_DEFAULT);
- } else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
- // Verify that we have the conditions to mark a comment-doc-keyword
- if ((IsASpace(sc.chPrev) || sc.chPrev == '*') && (!IsASpace(sc.chNext))) {
- styleBeforeDCKeyword = SCE_C_COMMENTDOC;
- sc.SetState(SCE_C_COMMENTDOCKEYWORD);
- }
- }
- break;
- case SCE_C_COMMENTLINE:
- if (sc.atLineStart) {
- sc.SetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_COMMENTLINEDOC:
- if (sc.atLineStart) {
- sc.SetState(SCE_C_DEFAULT);
- } else if (sc.ch == '@' || sc.ch == '\\') { // JavaDoc and Doxygen support
- // Verify that we have the conditions to mark a comment-doc-keyword
- if ((IsASpace(sc.chPrev) || sc.chPrev == '/' || sc.chPrev == '!') && (!IsASpace(sc.chNext))) {
- styleBeforeDCKeyword = SCE_C_COMMENTLINEDOC;
- sc.SetState(SCE_C_COMMENTDOCKEYWORD);
- }
- }
- break;
- case SCE_C_COMMENTDOCKEYWORD:
- if ((styleBeforeDCKeyword == SCE_C_COMMENTDOC) && sc.Match('*', '/')) {
- sc.ChangeState(SCE_C_COMMENTDOCKEYWORDERROR);
- sc.Forward();
- sc.ForwardSetState(SCE_C_DEFAULT);
- } else if (!setDoxygen.Contains(sc.ch)) {
- char s[100];
- if (caseSensitive) {
- sc.GetCurrent(s, sizeof(s));
- } else {
- sc.GetCurrentLowered(s, sizeof(s));
- }
- if (!IsASpace(sc.ch) || !keywords3.InList(s + 1)) {
- sc.ChangeState(SCE_C_COMMENTDOCKEYWORDERROR);
- }
- sc.SetState(styleBeforeDCKeyword);
- }
- break;
- case SCE_C_STRING:
- if (sc.atLineEnd) {
- sc.ChangeState(SCE_C_STRINGEOL);
- } else if (isIncludePreprocessor) {
- if (sc.ch == '>') {
- sc.ForwardSetState(SCE_C_DEFAULT);
- isIncludePreprocessor = false;
- }
- } else if (sc.ch == '\\') {
- if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
- sc.Forward();
- }
- } else if (sc.ch == '\"') {
- sc.ForwardSetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_CHARACTER:
- if (sc.atLineEnd) {
- sc.ChangeState(SCE_C_STRINGEOL);
- } else if (sc.ch == '\\') {
- if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
- sc.Forward();
- }
- } else if (sc.ch == '\'') {
- sc.ForwardSetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_REGEX:
- if (sc.atLineStart) {
- sc.SetState(SCE_C_DEFAULT);
- } else if (sc.ch == '/') {
- sc.Forward();
- while ((sc.ch < 0x80) && islower(sc.ch))
- sc.Forward(); // gobble regex flags
- sc.SetState(SCE_C_DEFAULT);
- } else if (sc.ch == '\\') {
- // Gobble up the quoted character
- if (sc.chNext == '\\' || sc.chNext == '/') {
- sc.Forward();
- }
- }
- break;
- case SCE_C_STRINGEOL:
- if (sc.atLineStart) {
- sc.SetState(SCE_C_DEFAULT);
- }
- break;
- case SCE_C_VERBATIM:
- if (sc.ch == '\"') {
- if (sc.chNext == '\"') {
- sc.Forward();
- } else {
- sc.ForwardSetState(SCE_C_DEFAULT);
- }
- }
- break;
- case SCE_C_UUID:
- if (sc.ch == '\r' || sc.ch == '\n' || sc.ch == ')') {
- sc.SetState(SCE_C_DEFAULT);
- }
- }
-
- // Determine if a new state should be entered.
- if (sc.state == SCE_C_DEFAULT) {
- if (sc.Match('@', '\"')) {
- sc.SetState(SCE_C_VERBATIM);
- sc.Forward();
- } else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
- if (lastWordWasUUID) {
- sc.SetState(SCE_C_UUID);
- lastWordWasUUID = false;
- } else {
- sc.SetState(SCE_C_NUMBER);
- }
- } else if (setWordStart.Contains(sc.ch) || (sc.ch == '@')) {
- if (lastWordWasUUID) {
- sc.SetState(SCE_C_UUID);
- lastWordWasUUID = false;
- } else {
- sc.SetState(SCE_C_IDENTIFIER);
- }
- } else if (sc.Match('/', '*')) {
- if (sc.Match("/**") || sc.Match("/*!")) { // Support of Qt/Doxygen doc. style
- sc.SetState(SCE_C_COMMENTDOC);
- } else {
- sc.SetState(SCE_C_COMMENT);
- }
- sc.Forward(); // Eat the * so it isn't used for the end of the comment
- } else if (sc.Match('/', '/')) {
- if ((sc.Match("///") && !sc.Match("////")) || sc.Match("//!"))
- // Support of Qt/Doxygen doc. style
- sc.SetState(SCE_C_COMMENTLINEDOC);
- else
- sc.SetState(SCE_C_COMMENTLINE);
- } else if (sc.ch == '/' && setOKBeforeRE.Contains(chPrevNonWhite) &&
- (!setCouldBePostOp.Contains(chPrevNonWhite) || !FollowsPostfixOperator(sc, styler))) {
- sc.SetState(SCE_C_REGEX); // JavaScript's RegEx
- } else if (sc.ch == '\"') {
- sc.SetState(SCE_C_STRING);
- isIncludePreprocessor = false; // ensure that '>' won't end the string
- } else if (isIncludePreprocessor && sc.ch == '<') {
- sc.SetState(SCE_C_STRING);
- } else if (sc.ch == '\'') {
- sc.SetState(SCE_C_CHARACTER);
- } else if (sc.ch == '#' && visibleChars == 0) {
- // Preprocessor commands are alone on their line
- sc.SetState(SCE_C_PREPROCESSOR);
- // Skip whitespace between # and preprocessor word
- do {
- sc.Forward();
- } while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
- if (sc.atLineEnd) {
- sc.SetState(SCE_C_DEFAULT);
- } else if (sc.Match("include")) {
- isIncludePreprocessor = true;
- }
- } else if (isoperator(static_cast<char>(sc.ch))) {
- sc.SetState(SCE_C_OPERATOR);
- }
- }
-
- if (!IsASpace(sc.ch) && !IsSpaceEquiv(sc.state)) {
- chPrevNonWhite = sc.ch;
- visibleChars++;
- }
- continuationLine = false;
- }
- sc.Complete();
-}
-
-static bool IsStreamCommentStyle(int style) {
- return style == SCE_C_COMMENT ||
- style == SCE_C_COMMENTDOC ||
- style == SCE_C_COMMENTDOCKEYWORD ||
- style == SCE_C_COMMENTDOCKEYWORDERROR;
-}
-
-// Store both the current line's fold level and the next lines in the
-// level store to make it easy to pick up with each increment
-// and to make it possible to fiddle the current level for "} else {".
-static void FoldCppDoc(unsigned int startPos, int length, int initStyle,
- WordList *[], Accessor &styler) {
-
- // property fold.comment
- // This option enables folding multi-line comments and explicit fold points when using the C++ lexer.
- // Explicit fold points allows adding extra folding by placing a //{ comment at the start and a //}
- // at the end of a section that should fold.
- bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
-
- // property fold.preprocessor
- // This option enables folding preprocessor directives when using the C++ lexer.
- // Includes C#'s explicit #region and #endregion folding directives.
- bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
-
- bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
-
- // property fold.at.else
- // This option enables C++ folding on a "} else {" line of an if statement.
- bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
-
- unsigned int endPos = startPos + length;
- int visibleChars = 0;
- int lineCurrent = styler.GetLine(startPos);
- int levelCurrent = SC_FOLDLEVELBASE;
- if (lineCurrent > 0)
- levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
- int levelMinCurrent = levelCurrent;
- int levelNext = levelCurrent;
- char chNext = styler[startPos];
- int styleNext = styler.StyleAt(startPos);
- int style = initStyle;
- 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 (foldComment && IsStreamCommentStyle(style)) {
- if (!IsStreamCommentStyle(stylePrev) && (stylePrev != SCE_C_COMMENTLINEDOC)) {
- levelNext++;
- } else if (!IsStreamCommentStyle(styleNext) && (styleNext != SCE_C_COMMENTLINEDOC) && !atEOL) {
- // Comments don't end at end of line and the next character may be unstyled.
- levelNext--;
- }
- }
- if (foldComment && (style == SCE_C_COMMENTLINE)) {
- if ((ch == '/') && (chNext == '/')) {
- char chNext2 = styler.SafeGetCharAt(i + 2);
- if (chNext2 == '{') {
- levelNext++;
- } else if (chNext2 == '}') {
- levelNext--;
- }
- }
- }
- if (foldPreprocessor && (style == SCE_C_PREPROCESSOR)) {
- if (ch == '#') {
- unsigned int j = i + 1;
- while ((j < endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
- j++;
- }
- if (styler.Match(j, "region") || styler.Match(j, "if")) {
- levelNext++;
- } else if (styler.Match(j, "end")) {
- levelNext--;
- }
- }
- }
- if (style == SCE_C_OPERATOR) {
- if (ch == '{') {
- // Measure the minimum before a '{' to allow
- // folding on "} else {"
- if (levelMinCurrent > levelNext) {
- levelMinCurrent = levelNext;
- }
- levelNext++;
- } else if (ch == '}') {
- levelNext--;
- }
- }
- if (!IsASpace(ch))
- visibleChars++;
- if (atEOL || (i == endPos-1)) {
- int levelUse = levelCurrent;
- if (foldAtElse) {
- levelUse = levelMinCurrent;
- }
- int lev = levelUse | levelNext << 16;
- if (visibleChars == 0 && foldCompact)
- lev |= SC_FOLDLEVELWHITEFLAG;
- if (levelUse < levelNext)
- lev |= SC_FOLDLEVELHEADERFLAG;
- if (lev != styler.LevelAt(lineCurrent)) {
- styler.SetLevel(lineCurrent, lev);
- }
- lineCurrent++;
- levelCurrent = levelNext;
- levelMinCurrent = levelCurrent;
- if (atEOL && (i == static_cast<unsigned int>(styler.Length()-1))) {
- // There is an empty line at end of file so give it same level and empty
- styler.SetLevel(lineCurrent, (levelCurrent | levelCurrent << 16) | SC_FOLDLEVELWHITEFLAG);
- }
- visibleChars = 0;
- }
- }
-}
-
-static const char *const cppWordLists[] = {
- "Primary keywords and identifiers",
- "Secondary keywords and identifiers",
- "Documentation comment keywords",
- "Unused",
- "Global classes and typedefs",
- 0,
-};
-
-static void ColouriseCppDocSensitive(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
- Accessor &styler) {
- ColouriseCppDoc(startPos, length, initStyle, keywordlists, styler, true);
-}
-
-static void ColouriseCppDocInsensitive(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
- Accessor &styler) {
- ColouriseCppDoc(startPos, length, initStyle, keywordlists, styler, false);
-}
-
-LexerModule lmCPP(SCLEX_CPP, ColouriseCppDocSensitive, "cpp", FoldCppDoc, cppWordLists);
-LexerModule lmCPPNoCase(SCLEX_CPPNOCASE, ColouriseCppDocInsensitive, "cppnocase", FoldCppDoc, cppWordLists);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-12 01:18:24 +0000