mirror of
https://git.do.srb2.org/STJr/ZoneBuilder.git
synced 2024-11-10 06:41:49 +00:00
471 lines
14 KiB
C++
471 lines
14 KiB
C++
|
// 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];
|
||
|
|
||
|
bool stylingWithinPreprocessor = styler.GetPropertyInt("styling.within.preprocessor") != 0;
|
||
|
|
||
|
CharacterSet setOKBeforeRE(CharacterSet::setNone, "([{=,:;!%^&*|?~+-");
|
||
|
CharacterSet setCouldBePostOp(CharacterSet::setNone, "+-");
|
||
|
|
||
|
CharacterSet setDoxygen(CharacterSet::setAlpha, "$@\\&<>#{}[]");
|
||
|
|
||
|
CharacterSet setWordStart(CharacterSet::setAlpha, "_", 0x80, true);
|
||
|
CharacterSet setWord(CharacterSet::setAlphaNum, "._", 0x80, true);
|
||
|
if (styler.GetPropertyInt("lexer.cpp.allow.dollars", 1) != 0) {
|
||
|
setWordStart.Add('$');
|
||
|
setWord.Add('$');
|
||
|
}
|
||
|
|
||
|
int chPrevNonWhite = ' ';
|
||
|
int visibleChars = 0;
|
||
|
bool lastWordWasUUID = false;
|
||
|
int styleBeforeDCKeyword = SCE_C_DEFAULT;
|
||
|
bool continuationLine = false;
|
||
|
|
||
|
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;
|
||
|
}
|
||
|
|
||
|
// 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 (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);
|
||
|
} 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 (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) {
|
||
|
bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
|
||
|
bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
|
||
|
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
|
||
|
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;
|
||
|
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);
|