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.
304 lines
9.5 KiB
304 lines
9.5 KiB
// Scintilla source code edit control
|
|
/** @file LexCSS.cxx
|
|
** Lexer for Cascading Style Sheets
|
|
** Written by Jakub Vrána
|
|
** Improved by Philippe Lhoste (CSS2)
|
|
**/
|
|
// Copyright 1998-2002 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"
|
|
|
|
|
|
static inline bool IsAWordChar(const unsigned int ch) {
|
|
return (isalnum(ch) || ch == '-' || ch == '_' || ch >= 161); // _ is not in fact correct CSS word-character
|
|
}
|
|
|
|
inline bool IsCssOperator(const char ch) {
|
|
if (!isalnum(ch) &&
|
|
(ch == '{' || ch == '}' || ch == ':' || ch == ',' || ch == ';' ||
|
|
ch == '.' || ch == '#' || ch == '!' || ch == '@' ||
|
|
/* CSS2 */
|
|
ch == '*' || ch == '>' || ch == '+' || ch == '=' || ch == '~' || ch == '|' ||
|
|
ch == '[' || ch == ']' || ch == '(' || ch == ')')) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static void ColouriseCssDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[], Accessor &styler) {
|
|
WordList &keywords = *keywordlists[0];
|
|
WordList &pseudoClasses = *keywordlists[1];
|
|
WordList &keywords2 = *keywordlists[2];
|
|
|
|
StyleContext sc(startPos, length, initStyle, styler);
|
|
|
|
int lastState = -1; // before operator
|
|
int lastStateC = -1; // before comment
|
|
int op = ' '; // last operator
|
|
|
|
for (; sc.More(); sc.Forward()) {
|
|
if (sc.state == SCE_CSS_COMMENT && sc.Match('*', '/')) {
|
|
if (lastStateC == -1) {
|
|
// backtrack to get last state:
|
|
// comments are like whitespace, so we must return to the previous state
|
|
unsigned int i = startPos;
|
|
for (; i > 0; i--) {
|
|
if ((lastStateC = styler.StyleAt(i-1)) != SCE_CSS_COMMENT) {
|
|
if (lastStateC == SCE_CSS_OPERATOR) {
|
|
op = styler.SafeGetCharAt(i-1);
|
|
while (--i) {
|
|
lastState = styler.StyleAt(i-1);
|
|
if (lastState != SCE_CSS_OPERATOR && lastState != SCE_CSS_COMMENT)
|
|
break;
|
|
}
|
|
if (i == 0)
|
|
lastState = SCE_CSS_DEFAULT;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (i == 0)
|
|
lastStateC = SCE_CSS_DEFAULT;
|
|
}
|
|
sc.Forward();
|
|
sc.ForwardSetState(lastStateC);
|
|
}
|
|
|
|
if (sc.state == SCE_CSS_COMMENT)
|
|
continue;
|
|
|
|
if (sc.state == SCE_CSS_DOUBLESTRING || sc.state == SCE_CSS_SINGLESTRING) {
|
|
if (sc.ch != (sc.state == SCE_CSS_DOUBLESTRING ? '\"' : '\''))
|
|
continue;
|
|
unsigned int i = sc.currentPos;
|
|
while (i && styler[i-1] == '\\')
|
|
i--;
|
|
if ((sc.currentPos - i) % 2 == 1)
|
|
continue;
|
|
sc.ForwardSetState(SCE_CSS_VALUE);
|
|
}
|
|
|
|
if (sc.state == SCE_CSS_OPERATOR) {
|
|
if (op == ' ') {
|
|
unsigned int i = startPos;
|
|
op = styler.SafeGetCharAt(i-1);
|
|
while (--i) {
|
|
lastState = styler.StyleAt(i-1);
|
|
if (lastState != SCE_CSS_OPERATOR && lastState != SCE_CSS_COMMENT)
|
|
break;
|
|
}
|
|
}
|
|
switch (op) {
|
|
case '@':
|
|
if (lastState == SCE_CSS_DEFAULT)
|
|
sc.SetState(SCE_CSS_DIRECTIVE);
|
|
break;
|
|
case '*':
|
|
if (lastState == SCE_CSS_DEFAULT)
|
|
sc.SetState(SCE_CSS_TAG);
|
|
break;
|
|
case '>':
|
|
case '+':
|
|
if (lastState == SCE_CSS_TAG || lastState == SCE_CSS_PSEUDOCLASS || lastState == SCE_CSS_CLASS
|
|
|| lastState == SCE_CSS_ID || lastState == SCE_CSS_UNKNOWN_PSEUDOCLASS)
|
|
sc.SetState(SCE_CSS_DEFAULT);
|
|
break;
|
|
case '[':
|
|
if (lastState == SCE_CSS_TAG || lastState == SCE_CSS_PSEUDOCLASS || lastState == SCE_CSS_DEFAULT ||
|
|
lastState == SCE_CSS_CLASS || lastState == SCE_CSS_ID || lastState == SCE_CSS_UNKNOWN_PSEUDOCLASS)
|
|
sc.SetState(SCE_CSS_ATTRIBUTE);
|
|
break;
|
|
case ']':
|
|
if (lastState == SCE_CSS_ATTRIBUTE)
|
|
sc.SetState(SCE_CSS_TAG);
|
|
break;
|
|
case '{':
|
|
if (lastState == SCE_CSS_DIRECTIVE)
|
|
sc.SetState(SCE_CSS_DEFAULT);
|
|
else if (lastState == SCE_CSS_TAG)
|
|
sc.SetState(SCE_CSS_IDENTIFIER);
|
|
break;
|
|
case '}':
|
|
if (lastState == SCE_CSS_DEFAULT || lastState == SCE_CSS_VALUE || lastState == SCE_CSS_IMPORTANT ||
|
|
lastState == SCE_CSS_IDENTIFIER || lastState == SCE_CSS_IDENTIFIER2)
|
|
sc.SetState(SCE_CSS_DEFAULT);
|
|
break;
|
|
case ':':
|
|
if (lastState == SCE_CSS_TAG || lastState == SCE_CSS_PSEUDOCLASS || lastState == SCE_CSS_DEFAULT ||
|
|
lastState == SCE_CSS_CLASS || lastState == SCE_CSS_ID || lastState == SCE_CSS_UNKNOWN_PSEUDOCLASS)
|
|
sc.SetState(SCE_CSS_PSEUDOCLASS);
|
|
else if (lastState == SCE_CSS_IDENTIFIER || lastState == SCE_CSS_IDENTIFIER2 || lastState == SCE_CSS_UNKNOWN_IDENTIFIER)
|
|
sc.SetState(SCE_CSS_VALUE);
|
|
break;
|
|
case '.':
|
|
if (lastState == SCE_CSS_TAG || lastState == SCE_CSS_PSEUDOCLASS || lastState == SCE_CSS_DEFAULT ||
|
|
lastState == SCE_CSS_CLASS || lastState == SCE_CSS_ID || lastState == SCE_CSS_UNKNOWN_PSEUDOCLASS)
|
|
sc.SetState(SCE_CSS_CLASS);
|
|
break;
|
|
case '#':
|
|
if (lastState == SCE_CSS_TAG || lastState == SCE_CSS_PSEUDOCLASS || lastState == SCE_CSS_DEFAULT ||
|
|
lastState == SCE_CSS_CLASS || lastState == SCE_CSS_ID || lastState == SCE_CSS_UNKNOWN_PSEUDOCLASS)
|
|
sc.SetState(SCE_CSS_ID);
|
|
break;
|
|
case ',':
|
|
if (lastState == SCE_CSS_TAG)
|
|
sc.SetState(SCE_CSS_DEFAULT);
|
|
break;
|
|
case ';':
|
|
if (lastState == SCE_CSS_DIRECTIVE)
|
|
sc.SetState(SCE_CSS_DEFAULT);
|
|
else if (lastState == SCE_CSS_VALUE || lastState == SCE_CSS_IMPORTANT)
|
|
sc.SetState(SCE_CSS_IDENTIFIER);
|
|
break;
|
|
case '!':
|
|
if (lastState == SCE_CSS_VALUE)
|
|
sc.SetState(SCE_CSS_IMPORTANT);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (IsAWordChar(sc.ch)) {
|
|
if (sc.state == SCE_CSS_DEFAULT)
|
|
sc.SetState(SCE_CSS_TAG);
|
|
continue;
|
|
}
|
|
|
|
if (IsAWordChar(sc.chPrev) && (
|
|
sc.state == SCE_CSS_IDENTIFIER || sc.state == SCE_CSS_IDENTIFIER2
|
|
|| sc.state == SCE_CSS_UNKNOWN_IDENTIFIER
|
|
|| sc.state == SCE_CSS_PSEUDOCLASS || sc.state == SCE_CSS_UNKNOWN_PSEUDOCLASS
|
|
|| sc.state == SCE_CSS_IMPORTANT
|
|
)) {
|
|
char s[100];
|
|
sc.GetCurrentLowered(s, sizeof(s));
|
|
char *s2 = s;
|
|
while (*s2 && !IsAWordChar(*s2))
|
|
s2++;
|
|
switch (sc.state) {
|
|
case SCE_CSS_IDENTIFIER:
|
|
if (!keywords.InList(s2)) {
|
|
if (keywords2.InList(s2)) {
|
|
sc.ChangeState(SCE_CSS_IDENTIFIER2);
|
|
} else {
|
|
sc.ChangeState(SCE_CSS_UNKNOWN_IDENTIFIER);
|
|
}
|
|
}
|
|
break;
|
|
case SCE_CSS_UNKNOWN_IDENTIFIER:
|
|
if (keywords.InList(s2))
|
|
sc.ChangeState(SCE_CSS_IDENTIFIER);
|
|
else if (keywords2.InList(s2))
|
|
sc.ChangeState(SCE_CSS_IDENTIFIER2);
|
|
break;
|
|
case SCE_CSS_PSEUDOCLASS:
|
|
if (!pseudoClasses.InList(s2))
|
|
sc.ChangeState(SCE_CSS_UNKNOWN_PSEUDOCLASS);
|
|
break;
|
|
case SCE_CSS_UNKNOWN_PSEUDOCLASS:
|
|
if (pseudoClasses.InList(s2))
|
|
sc.ChangeState(SCE_CSS_PSEUDOCLASS);
|
|
break;
|
|
case SCE_CSS_IMPORTANT:
|
|
if (strcmp(s2, "important") != 0)
|
|
sc.ChangeState(SCE_CSS_VALUE);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (sc.ch != '.' && sc.ch != ':' && sc.ch != '#' && (sc.state == SCE_CSS_CLASS || sc.state == SCE_CSS_PSEUDOCLASS || sc.state == SCE_CSS_UNKNOWN_PSEUDOCLASS || sc.state == SCE_CSS_ID))
|
|
sc.SetState(SCE_CSS_TAG);
|
|
|
|
if (sc.Match('/', '*')) {
|
|
lastStateC = sc.state;
|
|
sc.SetState(SCE_CSS_COMMENT);
|
|
sc.Forward();
|
|
} else if (sc.state == SCE_CSS_VALUE && (sc.ch == '\"' || sc.ch == '\'')) {
|
|
sc.SetState((sc.ch == '\"' ? SCE_CSS_DOUBLESTRING : SCE_CSS_SINGLESTRING));
|
|
} else if (IsCssOperator(static_cast<char>(sc.ch))
|
|
&& (sc.state != SCE_CSS_ATTRIBUTE || sc.ch == ']')
|
|
&& (sc.state != SCE_CSS_VALUE || sc.ch == ';' || sc.ch == '}' || sc.ch == '!')
|
|
&& (sc.state != SCE_CSS_DIRECTIVE || sc.ch == ';' || sc.ch == '{')
|
|
) {
|
|
if (sc.state != SCE_CSS_OPERATOR)
|
|
lastState = sc.state;
|
|
sc.SetState(SCE_CSS_OPERATOR);
|
|
op = sc.ch;
|
|
}
|
|
}
|
|
|
|
sc.Complete();
|
|
}
|
|
|
|
static void FoldCSSDoc(unsigned int startPos, int length, int, WordList *[], Accessor &styler) {
|
|
bool foldComment = styler.GetPropertyInt("fold.comment") != 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];
|
|
bool inComment = (styler.StyleAt(startPos-1) == SCE_CSS_COMMENT);
|
|
for (unsigned int i = startPos; i < endPos; i++) {
|
|
char ch = chNext;
|
|
chNext = styler.SafeGetCharAt(i + 1);
|
|
int style = styler.StyleAt(i);
|
|
bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
|
|
if (foldComment) {
|
|
if (!inComment && (style == SCE_CSS_COMMENT))
|
|
levelCurrent++;
|
|
else if (inComment && (style != SCE_CSS_COMMENT))
|
|
levelCurrent--;
|
|
inComment = (style == SCE_CSS_COMMENT);
|
|
}
|
|
if (style == SCE_CSS_OPERATOR) {
|
|
if (ch == '{') {
|
|
levelCurrent++;
|
|
} else if (ch == '}') {
|
|
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);
|
|
}
|
|
|
|
static const char * const cssWordListDesc[] = {
|
|
"CSS1 Keywords",
|
|
"Pseudo classes",
|
|
"CSS2 Keywords",
|
|
0
|
|
};
|
|
|
|
LexerModule lmCss(SCLEX_CSS, ColouriseCssDoc, "css", FoldCSSDoc, cssWordListDesc);
|