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//> This file is part of Ymacs, an Emacs-like editor for the Web
//> http://www.ymacs.org/
//>
//> Copyright (c) 2009-2010, Mihai Bazon, Dynarch.com. All rights reserved.
//>
//> Redistribution and use in source and binary forms, with or without
//> modification, are permitted provided that the following conditions are
//> met:
//>
//> * Redistributions of source code must retain the above copyright
//> notice, this list of conditions and the following disclaimer.
//>
//> * Redistributions in binary form must reproduce the above copyright
//> notice, this list of conditions and the following disclaimer in
//> the documentation and/or other materials provided with the
//> distribution.
//>
//> * Neither the name of Dynarch.com nor the names of its contributors
//> may be used to endorse or promote products derived from this
//> software without specific prior written permission.
//>
//> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
//> EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
//> IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
//> PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE
//> FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
//> CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
//> SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
//> INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
//> CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
//> ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
//> THE POSSIBILITY OF SUCH DAMAGE.
// @require ymacs-tokenizer.js
Ymacs_Tokenizer.define("css", function(stream, tok){
var PARSER = {
next : next,
copy : copy,
indentation : indentation
};
var $parens = [];
var $passedParens = [];
var $cont = [];
var $inString = null;
var $inComment = null;
function copy() {
var c = resume.context = {
parens : $parens.slice(0),
passedParens : $passedParens.slice(0),
cont : $cont.slice(0),
inString : $inString,
inComment : $inComment
};
function resume() {
$parens = c.parens.slice(0);
$passedParens = c.passedParens.slice(0);
$cont = c.cont.slice(0);
$inString = c.inString;
$inComment = c.inComment;
return PARSER;
};
return resume;
};
function INDENT_LEVEL() {
return tok.buffer.getq("indent_level");
};
var OPEN_PAREN = {
"(" : ")",
"{" : "}",
"[" : "]"
};
var CLOSE_PAREN = {
")" : "(",
"}" : "{",
"]" : "["
};
function isOpenParen(ch) {
return OPEN_PAREN[ch];
};
function isCloseParen(ch) {
return CLOSE_PAREN[ch];
};
function foundToken(c1, c2, type) {
tok.onToken(stream.line, c1, c2, type);
};
function readComment() {
var line = stream.lineText(), pos = line.indexOf("*/", stream.col);
var m = /^\s*\*+/.exec(line.substr(stream.col));
if (m) {
foundToken(stream.col, stream.col += m[0].length, "mcomment-starter");
}
if (pos >= 0) {
$cont.pop();
$inComment = null;
foundToken(stream.col, pos, "mcomment");
foundToken(pos, pos += 2, "mcomment-stopper");
stream.col = pos;
} else {
foundToken(stream.col, line.length, "mcomment");
stream.col = line.length;
}
};
function readString(end, type) {
var ch, esc = false, start = stream.col;
while (!stream.eol()) {
ch = stream.peek();
if (ch === end && !esc) {
$cont.pop();
$inString = null;
foundToken(start, stream.col, type);
foundToken(stream.col, ++stream.col, type + "-stopper");
return true;
}
esc = !esc && ch === "\\";
stream.nextCol();
}
foundToken(start, stream.col, type);
};
function next() {
stream.checkStop();
if ($cont.length > 0)
return $cont.peek()();
var ch = stream.peek(), tmp;
if (stream.lookingAt("/*")) {
$inComment = { line: stream.line, c1: stream.col };
foundToken(stream.col, stream.col += 2, "mcomment-starter");
$cont.push(readComment);
}
else if (ch === '"' || ch === "'") {
$inString = { line: stream.line, c1: stream.col };
foundToken(stream.col, ++stream.col, "string-starter");
$cont.push(readString.$C(ch, "string"));
}
else if ((tmp = isOpenParen(ch))) {
$parens.push({ line: stream.line, col: stream.col, type: ch });
foundToken(stream.col, ++stream.col, "open-paren");
}
else if ((tmp = isCloseParen(ch))) {
var p = $parens.pop();
if (!p || p.type != tmp) {
foundToken(stream.col, ++stream.col, "error");
} else {
// circular reference; poor browsers will leak. mwuhahahaha
p.closed = { line: stream.line, col: stream.col, opened: p };
$passedParens.push(p);
foundToken(stream.col, ++stream.col, "close-paren");
}
}
else if ((tmp = stream.lookingAt(/^([a-zA-z-]+):/))) {
foundToken(stream.col, stream.col += tmp[1].length, "keyword");
foundToken(stream.col, ++stream.col, "operator");
}
else if ((tmp = stream.lookingAt(/^([0-9.]+)(px|pt|em|ex|in|cm|mm|%)/))) {
foundToken(stream.col, stream.col += tmp[1].length, "number");
foundToken(stream.col, stream.col += tmp[2].length, "type");
}
else if ((tmp = stream.lookingAt(/^(\.[a-zA-Z0-9_:-]+)/))) {
foundToken(stream.col, stream.col += tmp[1].length, "function-name");
}
else if ((tmp = stream.lookingAt(/^(#[a-zA-Z0-9_:-]+)/))) {
foundToken(stream.col, stream.col += tmp[1].length, "constant");
}
else if ((tmp = stream.lookingAt(/^(@[a-zA-Z0-9_:-]+)/))) {
foundToken(stream.col, stream.col += tmp[1].length, "builtin");
}
else if ((tmp = stream.lookingAt(/^(url|none|auto|bold|italic|normal|inherit|print|screen|all)/))) {
foundToken(stream.col, stream.col += tmp[1].length, "builtin");
}
else {
foundToken(stream.col, ++stream.col, null);
}
};
function indentation() {
// no indentation for continued strings
if ($inString)
return 0;
var row = stream.line;
var currentLine = stream.lineText();
var indent = 0;
if ($inComment) {
var commentStartLine = stream.lineText($inComment.line);
indent = $inComment.c1 + 1;
if (!/^\s*\*/.test(currentLine)) {
// align with the first non-whitespace and non-asterisk character in the comment
var re = /[^\s*]/g;
re.lastIndex = $inComment.c1 + 1;
var m = re.exec(commentStartLine);
if (m)
indent = m.index;
}
return indent;
}
var p = $parens.peek();
if (p) {
// check if the current line closes the paren
var re = new RegExp("^\\s*\\" + OPEN_PAREN[p.type]);
var thisLineCloses = re.test(currentLine);
// Check if there is text after the opening paren. If so, indent to that column.
var line = stream.lineText(p.line);
re = /\S/g;
re.lastIndex = p.col + 1;
var m = re.exec(line);
if (m) {
// but if this line closes the paren, better use the column of the open paren
indent = thisLineCloses ? p.col : m.index;
}
else {
// Otherwise we should indent to one level more than the indentation of the line
// containing the opening paren.
indent = stream.lineIndentation(p.line) + INDENT_LEVEL();
// but if this line closes the paren, then back one level
if (thisLineCloses)
indent -= INDENT_LEVEL();
}
}
return indent;
};
return PARSER;
});
DEFINE_SINGLETON("Ymacs_Keymap_CSS", Ymacs_Keymap);
Ymacs_Keymap_CSS().defineKeys({
"ENTER" : "newline_and_indent",
": && } && )" : "c_insert_and_indent"
});
Ymacs_Buffer.newMode("css_mode", function(){
var tok = this.tokenizer;
this.setTokenizer(new Ymacs_Tokenizer({ buffer: this, type: "css" }));
var was_paren_match = this.cmd("paren_match_mode", true);
this.pushKeymap(Ymacs_Keymap_CSS());
return function() {
this.setTokenizer(tok);
if (!was_paren_match)
this.cmd("paren_match_mode", false);
this.popKeymap(Ymacs_Keymap_CSS());
};
});
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