You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
598 lines
14 KiB
598 lines
14 KiB
// Scintilla source code edit control |
|
/** @file LexCPP.cxx |
|
** Lexer for C++, C, Java, Javascript, Resource File and Objective-C |
|
**/ |
|
// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org> |
|
// The License.txt file describes the conditions under which this software may be distributed. |
|
// Modified by Don <don.h@free.fr> 2004 to add lexer Object C |
|
|
|
#include <stdlib.h> |
|
#include <string.h> |
|
#include <ctype.h> |
|
#include <stdio.h> |
|
#include <stdarg.h> |
|
#include <assert.h> |
|
|
|
#include <string> |
|
#include <string_view> |
|
|
|
#include "ILexer.h" |
|
#include "LexAccessor.h" |
|
#include "Accessor.h" |
|
#include "StyleContext.h" |
|
#include "WordList.h" |
|
#include "CharacterSet.h" |
|
#include "LexerModule.h" |
|
|
|
#include "Scintilla.h" |
|
#include "SciLexer.h" |
|
|
|
using namespace Lexilla; |
|
|
|
constexpr auto KEYWORD_BOXHEADER = 1; |
|
|
|
static bool IsOKBeforeRE(const int ch) { |
|
return (ch == '(') || (ch == '=') || (ch == ','); |
|
} |
|
|
|
static inline bool IsAWordChar(const int ch) { |
|
return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_'); |
|
} |
|
|
|
static inline bool IsAWordStart(const int ch) { |
|
return (ch < 0x80) && (isalnum(ch) || ch == '_'); |
|
} |
|
|
|
inline bool IsASpace(unsigned int ch) { |
|
return (ch == ' ') || ((ch >= 0x09) && (ch <= 0x0d)); |
|
} |
|
|
|
static inline bool IsADoxygenChar(const int ch) { |
|
return (islower(ch) || ch == '$' || ch == '@' || |
|
ch == '\\' || ch == '&' || ch == '<' || |
|
ch == '>' || ch == '#' || ch == '{' || |
|
ch == '}' || ch == '[' || ch == ']'); |
|
} |
|
|
|
static void ColouriseObjCDoc(size_t startPos, int length, int initStyle, WordList *keywordlists[], |
|
Accessor &styler, bool caseSensitive) { |
|
|
|
WordList &mainInstrsList = *keywordlists[0]; //Commun Instriction |
|
WordList &mainTypesList = *keywordlists[1]; //Commun Type |
|
WordList &DoxygenList = *keywordlists[2]; //Doxygen keyword |
|
WordList &objcDirectiveList = *keywordlists[3]; // objC Directive |
|
WordList &objcQualifierList = *keywordlists[4]; //objC Qualifier |
|
|
|
bool stylingWithinPreprocessor = styler.GetPropertyInt("styling.within.preprocessor") != 0; |
|
|
|
// Do not leak onto next line |
|
if (initStyle == SCE_C_STRINGEOL) |
|
initStyle = SCE_C_DEFAULT; |
|
|
|
int chPrevNonWhite = ' '; |
|
int visibleChars = 0; |
|
bool lastWordWasUUID = false; |
|
|
|
StyleContext sc(startPos, length, initStyle, styler); |
|
|
|
for (; sc.More(); sc.Forward()) |
|
{ |
|
if (sc.atLineStart && (sc.state == SCE_C_STRING)) |
|
{ |
|
// Prevent SCE_C_STRINGEOL from leaking back to previous line |
|
sc.SetState(SCE_C_STRING); |
|
} |
|
|
|
// 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(); |
|
} |
|
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 : |
|
{ |
|
if (!IsAWordChar(sc.ch)) |
|
sc.SetState(SCE_C_DEFAULT); |
|
break; |
|
} |
|
case SCE_C_IDENTIFIER : |
|
{ |
|
if (!IsAWordChar(sc.ch) || (sc.ch == '.')) |
|
{ |
|
char s[100]; |
|
sc.GetCurrent(s, sizeof(s)); |
|
if (s[0] == '@') |
|
{ |
|
char *ps = s + 1; |
|
if (objcDirectiveList.InList(ps)) |
|
sc.ChangeState(SCE_OBJC_DIRECTIVE); |
|
} |
|
else |
|
{ |
|
if (mainInstrsList.InList(s)) |
|
{ |
|
lastWordWasUUID = strcmp(s, "uuid") == 0; |
|
sc.ChangeState(SCE_C_WORD); |
|
} |
|
else if (mainTypesList.InList(s)) |
|
{ |
|
sc.ChangeState(SCE_C_WORD2); |
|
} |
|
else if (objcQualifierList.InList(s)) |
|
{ |
|
sc.ChangeState(SCE_OBJC_QUALIFIER); |
|
} |
|
} |
|
sc.SetState(SCE_C_DEFAULT); |
|
} |
|
break; |
|
} |
|
case SCE_C_PREPROCESSOR : |
|
{ |
|
if (stylingWithinPreprocessor) |
|
{ |
|
if (IsASpace(sc.ch)) |
|
sc.SetState(SCE_C_DEFAULT); |
|
} |
|
else |
|
{ |
|
if ((sc.atLineEnd) || (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 == '\\') |
|
{ |
|
sc.SetState(SCE_C_COMMENTDOCKEYWORD); |
|
} |
|
break; |
|
} |
|
case SCE_C_COMMENTLINE : |
|
case SCE_C_COMMENTLINEDOC : |
|
{ |
|
if (sc.atLineEnd) |
|
{ |
|
sc.SetState(SCE_C_DEFAULT); |
|
visibleChars = 0; |
|
} |
|
break; |
|
} |
|
case SCE_C_COMMENTDOCKEYWORD : |
|
{ |
|
if (sc.Match('*', '/')) |
|
{ |
|
sc.ChangeState(SCE_C_COMMENTDOCKEYWORDERROR); |
|
sc.Forward(); |
|
sc.ForwardSetState(SCE_C_DEFAULT); |
|
} |
|
else if (!IsADoxygenChar(sc.ch)) |
|
{ |
|
char s[100]; |
|
if (caseSensitive) |
|
sc.GetCurrent(s, sizeof(s)); |
|
else |
|
sc.GetCurrentLowered(s, sizeof(s)); |
|
|
|
if (!isspace(sc.ch) || !DoxygenList.InList(s + 1)) |
|
sc.ChangeState(SCE_C_COMMENTDOCKEYWORDERROR); |
|
|
|
sc.SetState(SCE_C_COMMENTDOC); |
|
} |
|
break; |
|
} |
|
case SCE_C_STRING : |
|
{ |
|
if (sc.ch == '\\') |
|
{ |
|
if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') |
|
sc.Forward(); |
|
} |
|
else if (sc.ch == '\"') |
|
{ |
|
sc.ForwardSetState(SCE_C_DEFAULT); |
|
} |
|
else if (sc.atLineEnd) |
|
{ |
|
sc.ChangeState(SCE_C_STRINGEOL); |
|
sc.ForwardSetState(SCE_C_DEFAULT); |
|
visibleChars = 0; |
|
} |
|
break; |
|
} |
|
case SCE_C_CHARACTER : |
|
{ |
|
if (sc.atLineEnd) |
|
{ |
|
sc.ChangeState(SCE_C_STRINGEOL); |
|
sc.ForwardSetState(SCE_C_DEFAULT); |
|
visibleChars = 0; |
|
} |
|
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.ch == '\r' || sc.ch == '\n' || sc.ch == '/') |
|
{ |
|
sc.ForwardSetState(SCE_C_DEFAULT); |
|
} |
|
else if (sc.ch == '\\') |
|
{ |
|
// Gobble up the quoted character |
|
if (sc.chNext == '\\' || sc.chNext == '/') |
|
{ |
|
sc.Forward(); |
|
} |
|
} |
|
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); |
|
break; |
|
} |
|
default : |
|
break; |
|
} |
|
|
|
// 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 (IsAWordStart(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("//!")) // Support of Qt/Doxygen doc. style |
|
sc.SetState(SCE_C_COMMENTLINEDOC); |
|
else |
|
sc.SetState(SCE_C_COMMENTLINE); |
|
} |
|
else if (sc.ch == '/' && IsOKBeforeRE(chPrevNonWhite)) |
|
{ |
|
sc.SetState(SCE_C_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 (sc.atLineEnd) { |
|
// Reset states to begining of colourise so no surprises |
|
// if different sets of lines lexed. |
|
chPrevNonWhite = ' '; |
|
visibleChars = 0; |
|
lastWordWasUUID = false; |
|
} |
|
if (!IsASpace(sc.ch)) { |
|
chPrevNonWhite = sc.ch; |
|
visibleChars++; |
|
} |
|
} |
|
sc.Complete(); |
|
} |
|
|
|
static bool IsStreamCommentStyle(int style) { |
|
return style == SCE_C_COMMENT || |
|
style == SCE_C_COMMENTDOC || |
|
style == SCE_C_COMMENTDOCKEYWORD || |
|
style == SCE_C_COMMENTDOCKEYWORDERROR; |
|
} |
|
|
|
static bool matchKeyword(size_t start, WordList &keywords, Accessor &styler, int keywordtype) { |
|
bool FoundKeyword = false; |
|
|
|
for (unsigned int i = 0; |
|
strlen(keywords.WordAt(i)) > 0 && !FoundKeyword; |
|
i++) { |
|
if (atoi(keywords.WordAt(i)) == keywordtype) { |
|
FoundKeyword = styler.Match(start, ((char *)keywords.WordAt(i)) + 2); |
|
} |
|
} |
|
return FoundKeyword; |
|
} |
|
|
|
static bool IsCommentLine(int line, Accessor &styler) { |
|
unsigned int Pos = styler.LineStart(line); |
|
while (styler.GetLine(Pos) == line) { |
|
int PosStyle = styler.StyleAt(Pos); |
|
|
|
if ( !IsStreamCommentStyle(PosStyle) |
|
&& |
|
PosStyle != SCE_C_COMMENTLINEDOC |
|
&& |
|
PosStyle != SCE_C_COMMENTLINE |
|
&& |
|
!IsASpace(styler.SafeGetCharAt(Pos)) |
|
) |
|
return false; |
|
Pos++; |
|
} |
|
|
|
return true; |
|
} |
|
|
|
|
|
static void FoldObjCDoc(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[], |
|
Accessor &styler) { |
|
WordList &keywords4 = *keywordlists[3]; |
|
|
|
bool foldComment = styler.GetPropertyInt("fold.comment") != 0; |
|
bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0; |
|
bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0; |
|
bool firstLine = true; |
|
size_t endPos = startPos + length; |
|
int visibleChars = 0; |
|
int lineCurrent = styler.GetLine(startPos); |
|
int levelPrev = styler.LevelAt(lineCurrent) & SC_FOLDLEVELNUMBERMASK; |
|
int levelCurrent = levelPrev; |
|
int levelPrevPrev; |
|
int levelUnindent = 0; |
|
char chNext = styler[startPos]; |
|
int styleNext = styler.StyleAt(startPos); |
|
int style = initStyle; |
|
|
|
if (lineCurrent == 0) { |
|
levelPrevPrev = levelPrev; |
|
} else { |
|
levelPrevPrev = styler.LevelAt(static_cast<Sci_Position>(lineCurrent) - 1) & SC_FOLDLEVELNUMBERMASK; |
|
} |
|
|
|
for (size_t 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)) { |
|
levelCurrent++; |
|
} else if (!IsStreamCommentStyle(styleNext) && !atEOL) { |
|
// Comments don't end at end of line and the next character may be unstyled. |
|
levelCurrent--; |
|
} |
|
} |
|
if (foldPreprocessor && (style == SCE_C_PREPROCESSOR)) { |
|
if (ch == '#') { |
|
size_t j = i + 1; |
|
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 (style == SCE_C_OPERATOR |
|
|| |
|
style == SCE_C_COMMENT |
|
|| |
|
style == SCE_C_COMMENTLINE) { |
|
|
|
if (ch == '{') { |
|
levelCurrent++; |
|
// Special handling if line has closing brace followed by opening brace. |
|
if (levelCurrent == levelPrev) { |
|
if (firstLine) |
|
levelUnindent = 1; |
|
else |
|
levelUnindent = -1; |
|
} |
|
} else if (ch == '}') { |
|
levelCurrent--; |
|
} |
|
} |
|
|
|
if (style == SCE_OBJC_DIRECTIVE) |
|
{ |
|
if (ch == '@') |
|
{ |
|
size_t j = i + 1; |
|
if (styler.Match(j, "interface") || styler.Match(j, "implementation") || styler.Match(j, "protocol")) |
|
{ |
|
levelCurrent++; |
|
} |
|
else if (styler.Match(j, "end")) |
|
{ |
|
levelCurrent--; |
|
} |
|
} |
|
} |
|
|
|
/* Check for fold header keyword at beginning of word */ |
|
if ((style == SCE_C_WORD || style == SCE_C_COMMENT || style == SCE_C_COMMENTLINE) |
|
&& (style != stylePrev)) { |
|
if (matchKeyword(i, keywords4, styler, KEYWORD_BOXHEADER)) { |
|
int line; |
|
// Loop backwards all empty or comment lines |
|
for (line = lineCurrent - 1; |
|
line >= 0 |
|
&& |
|
levelCurrent == (styler.LevelAt(line) & SC_FOLDLEVELNUMBERMASK) |
|
&& |
|
IsCommentLine(line, styler); |
|
line--) { |
|
// just loop backwards; |
|
} |
|
line++; |
|
if (line == lineCurrent) { |
|
// in current line |
|
} else { |
|
// at top of all preceding comment lines |
|
styler.SetLevel(line, styler.LevelAt(line)); |
|
} |
|
|
|
} |
|
} |
|
|
|
if (atEOL) { |
|
int lev; |
|
// Compute level correction for special case: '} else {' |
|
if (levelUnindent < 0) { |
|
levelPrev += levelUnindent; |
|
} else { |
|
levelCurrent += levelUnindent; |
|
} |
|
|
|
lev = levelPrev; |
|
if (visibleChars == 0 && foldCompact) |
|
lev |= SC_FOLDLEVELWHITEFLAG; |
|
|
|
// Produce footer line at line before (special handling for '} else {' |
|
if (levelPrev < levelPrevPrev) { |
|
styler.SetLevel(static_cast<Sci_Position>(lineCurrent) - 1, styler.LevelAt(static_cast<Sci_Position>(lineCurrent) - 1)); |
|
} |
|
// Mark the fold header (the line that is always visible) |
|
if ((levelCurrent > levelPrev) && (visibleChars > 0)) |
|
lev |= SC_FOLDLEVELHEADERFLAG; |
|
|
|
if (lev != styler.LevelAt(lineCurrent)) { |
|
styler.SetLevel(lineCurrent, lev); |
|
} |
|
|
|
lineCurrent++; |
|
levelPrevPrev = levelPrev; |
|
levelPrev = levelCurrent; |
|
levelUnindent = 0; |
|
visibleChars = 0; |
|
firstLine = 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 cppWordLists[] = { |
|
"Primary keywords and identifiers", |
|
"Secondary keywords and identifiers", |
|
"Documentation comment keywords", |
|
"Fold header keywords", |
|
0, |
|
}; |
|
|
|
static void ColouriseObjCDocSensitive(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[], |
|
Accessor &styler) { |
|
ColouriseObjCDoc(startPos, length, initStyle, keywordlists, styler, true); |
|
} |
|
|
|
extern const LexerModule lmObjC(SCLEX_OBJC, ColouriseObjCDocSensitive, "objc", FoldObjCDoc, cppWordLists);
|
|
|