/lenasys/trunk

define('ace/mode/latex', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/mode/text', 'ace/tokenizer', 'ace/mode/latex_highlight_rules', 'ace/mode/folding/latex', 'ace/range'], function(require, exports, module) {

var oop = require("../lib/oop");

var TextMode = require("./text").Mode;

var Tokenizer = require("../tokenizer").Tokenizer;

var LatexHighlightRules = require("./latex_highlight_rules").LatexHighlightRules;

var LatexFoldMode = require("./folding/latex").FoldMode;

var Range = require("../range").Range;

var Mode = function() {

    this.$tokenizer = new Tokenizer(new LatexHighlightRules().getRules());

    this.foldingRules = new LatexFoldMode();

};

oop.inherits(Mode, TextMode);

(function() {

    this.lineCommentStart = "%";

}).call(Mode.prototype);

exports.Mode = Mode;

});

define('ace/mode/latex_highlight_rules', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/mode/text_highlight_rules'], function(require, exports, module) {

var oop = require("../lib/oop");

var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;

var LatexHighlightRules = function() {   

    this.$rules = {

        "start" : [{

            token : "keyword",

            regex : "\\\\(?:[^a-zA-Z]|[a-zA-Z]+)"

        }, {

            token : "lparen",

            regex : "[[({]"

        }, {

            token : "rparen",

            regex : "[\\])}]"

        }, {

            token : "string",

            regex : "\\$(?:(?:\\\\.)|(?:[^\\$\\\\]))*?\\$"

        }, {

            token : "comment",

            regex : "%.*$"

        }]

    };

};

oop.inherits(LatexHighlightRules, TextHighlightRules);

exports.LatexHighlightRules = LatexHighlightRules;

});

define('ace/mode/folding/latex', ['require', 'exports', 'module' , 'ace/lib/oop', 'ace/mode/folding/fold_mode', 'ace/range', 'ace/token_iterator'], function(require, exports, module) {

var oop = require("../../lib/oop");

var BaseFoldMode = require("./fold_mode").FoldMode;

var Range = require("../../range").Range;

var TokenIterator = require("../../token_iterator").TokenIterator;

var FoldMode = exports.FoldMode = function() {};

oop.inherits(FoldMode, BaseFoldMode);

(function() {

    this.foldingStartMarker = /^\s*\\(begin)|(section|subsection)\b|{\s*$/;

    this.foldingStopMarker = /^\s*\\(end)\b|^\s*}/;

    this.getFoldWidgetRange = function(session, foldStyle, row) {

        var line = session.doc.getLine(row);

        var match = this.foldingStartMarker.exec(line);

        if (match) {

            if (match[1])

                return this.latexBlock(session, row, match[0].length - 1);

            if (match[2])

                return this.latexSection(session, row, match[0].length - 1);

            return this.openingBracketBlock(session, "{", row, match.index);

        }

        var match = this.foldingStopMarker.exec(line);

        if (match) {

            if (match[1])

                return this.latexBlock(session, row, match[0].length - 1);

            return this.closingBracketBlock(session, "}", row, match.index + match[0].length);

        }

    };

    this.latexBlock = function(session, row, column) {

        var keywords = {

            "\\begin": 1,

            "\\end": -1

        };

        var stream = new TokenIterator(session, row, column);

        var token = stream.getCurrentToken();

        if (!token || token.type !== "keyword")

            return;

        var val = token.value;

        var dir = keywords[val];

        var getType = function() {

            var token = stream.stepForward();

            var type = token.type == "lparen" ?stream.stepForward().value : "";

            if (dir === -1) {

                stream.stepBackward();

                if (type)

                    stream.stepBackward();

            }

            return type;

        };

        var stack = [getType()];

        var startColumn = dir === -1 ? stream.getCurrentTokenColumn() : session.getLine(row).length;

        var startRow = row;

        stream.step = dir === -1 ? stream.stepBackward : stream.stepForward;

        while(token = stream.step()) {

            if (token.type !== "keyword")

                continue;

            var level = keywords[token.value];

            if (!level)

                continue;

            var type = getType();

            if (level === dir)

                stack.unshift(type);

            else if (stack.shift() !== type || !stack.length)

                break;

        }

        if (stack.length)

            return;

        var row = stream.getCurrentTokenRow();

        if (dir === -1)

            return new Range(row, session.getLine(row).length, startRow, startColumn);

        stream.stepBackward();

        return new Range(startRow, startColumn, row, stream.getCurrentTokenColumn());

    };

    this.latexSection = function(session, row, column) {

        var keywords = ["\\subsection", "\\section", "\\begin", "\\end"];

        var stream = new TokenIterator(session, row, column);

        var token = stream.getCurrentToken();

        if (!token || token.type != "keyword")

            return;

        var startLevel = keywords.indexOf(token.value);

        var stackDepth = 0

        var endRow = row;

        while(token = stream.stepForward()) {

            if (token.type !== "keyword")

                continue;

            var level = keywords.indexOf(token.value);

            if (level >= 2) {

                if (!stackDepth)

                    endRow = stream.getCurrentTokenRow() - 1;

                stackDepth += level == 2 ? 1 : - 1;

                if (stackDepth < 0)

                    break

            } else if (level >= startLevel)

                break;

        }

        if (!stackDepth)

            endRow = stream.getCurrentTokenRow() - 1;

        while (endRow > row && !/\S/.test(session.getLine(endRow)))

            endRow--;

        return new Range(

            row, session.getLine(row).length,

            endRow, session.getLine(endRow).length

        );

    };

}).call(FoldMode.prototype);

});