"no use strict";
!(function(window) {
if (typeof window.window != "undefined" && window.document)
    return;
if (window.require && window.define)
    return;

if (!window.console) {
    window.console = function() {
        var msgs = Array.prototype.slice.call(arguments, 0);
        postMessage({type: "log", data: msgs});
    };
    window.console.error =
    window.console.warn = 
    window.console.log =
    window.console.trace = window.console;
}
window.window = window;
window.ace = window;

window.onerror = function(message, file, line, col, err) {
    postMessage({type: "error", data: {
        message: message,
        data: err.data,
        file: file,
        line: line, 
        col: col,
        stack: err.stack
    }});
};

window.normalizeModule = function(parentId, moduleName) {
    // normalize plugin requires
    if (moduleName.indexOf("!") !== -1) {
        var chunks = moduleName.split("!");
        return window.normalizeModule(parentId, chunks[0]) + "!" + window.normalizeModule(parentId, chunks[1]);
    }
    // normalize relative requires
    if (moduleName.charAt(0) == ".") {
        var base = parentId.split("/").slice(0, -1).join("/");
        moduleName = (base ? base + "/" : "") + moduleName;
        
        while (moduleName.indexOf(".") !== -1 && previous != moduleName) {
            var previous = moduleName;
            moduleName = moduleName.replace(/^\.\//, "").replace(/\/\.\//, "/").replace(/[^\/]+\/\.\.\//, "");
        }
    }
    
    return moduleName;
};

window.require = function require(parentId, id) {
    if (!id) {
        id = parentId;
        parentId = null;
    }
    if (!id.charAt)
        throw new Error("worker.js require() accepts only (parentId, id) as arguments");

    id = window.normalizeModule(parentId, id);

    var module = window.require.modules[id];
    if (module) {
        if (!module.initialized) {
            module.initialized = true;
            module.exports = module.factory().exports;
        }
        return module.exports;
    }
   
    if (!window.require.tlns)
        return console.log("unable to load " + id);
    
    var path = resolveModuleId(id, window.require.tlns);
    if (path.slice(-3) != ".js") path += ".js";
    
    window.require.id = id;
    window.require.modules[id] = {}; // prevent infinite loop on broken modules
    importScripts(path);
    return window.require(parentId, id);
};
function resolveModuleId(id, paths) {
    var testPath = id, tail = "";
    while (testPath) {
        var alias = paths[testPath];
        if (typeof alias == "string") {
            return alias + tail;
        } else if (alias) {
            return  alias.location.replace(/\/*$/, "/") + (tail || alias.main || alias.name);
        } else if (alias === false) {
            return "";
        }
        var i = testPath.lastIndexOf("/");
        if (i === -1) break;
        tail = testPath.substr(i) + tail;
        testPath = testPath.slice(0, i);
    }
    return id;
}
window.require.modules = {};
window.require.tlns = {};

window.define = function(id, deps, factory) {
    if (arguments.length == 2) {
        factory = deps;
        if (typeof id != "string") {
            deps = id;
            id = window.require.id;
        }
    } else if (arguments.length == 1) {
        factory = id;
        deps = [];
        id = window.require.id;
    }
    
    if (typeof factory != "function") {
        window.require.modules[id] = {
            exports: factory,
            initialized: true
        };
        return;
    }

    if (!deps.length)
        // If there is no dependencies, we inject "require", "exports" and
        // "module" as dependencies, to provide CommonJS compatibility.
        deps = ["require", "exports", "module"];

    var req = function(childId) {
        return window.require(id, childId);
    };

    window.require.modules[id] = {
        exports: {},
        factory: function() {
            var module = this;
            var returnExports = factory.apply(this, deps.slice(0, factory.length).map(function(dep) {
                switch (dep) {
                    // Because "require", "exports" and "module" aren't actual
                    // dependencies, we must handle them seperately.
                    case "require": return req;
                    case "exports": return module.exports;
                    case "module":  return module;
                    // But for all other dependencies, we can just go ahead and
                    // require them.
                    default:        return req(dep);
                }
            }));
            if (returnExports)
                module.exports = returnExports;
            return module;
        }
    };
};
window.define.amd = {};
require.tlns = {};
window.initBaseUrls  = function initBaseUrls(topLevelNamespaces) {
    for (var i in topLevelNamespaces)
        require.tlns[i] = topLevelNamespaces[i];
};

window.initSender = function initSender() {

    var EventEmitter = window.require("ace/lib/event_emitter").EventEmitter;
    var oop = window.require("ace/lib/oop");
    
    var Sender = function() {};
    
    (function() {
        
        oop.implement(this, EventEmitter);
                
        this.callback = function(data, callbackId) {
            postMessage({
                type: "call",
                id: callbackId,
                data: data
            });
        };
    
        this.emit = function(name, data) {
            postMessage({
                type: "event",
                name: name,
                data: data
            });
        };
        
    }).call(Sender.prototype);
    
    return new Sender();
};

var main = window.main = null;
var sender = window.sender = null;

window.onmessage = function(e) {
    var msg = e.data;
    if (msg.event && sender) {
        sender._signal(msg.event, msg.data);
    }
    else if (msg.command) {
        if (main[msg.command])
            main[msg.command].apply(main, msg.args);
        else if (window[msg.command])
            window[msg.command].apply(window, msg.args);
        else
            throw new Error("Unknown command:" + msg.command);
    }
    else if (msg.init) {
        window.initBaseUrls(msg.tlns);
        sender = window.sender = window.initSender();
        var clazz = require(msg.module)[msg.classname];
        main = window.main = new clazz(sender);
    }
};
})(this);

define("ace/lib/oop",[], function(require, exports, module) {
"use strict";

exports.inherits = function(ctor, superCtor) {
    ctor.super_ = superCtor;
    ctor.prototype = Object.create(superCtor.prototype, {
        constructor: {
            value: ctor,
            enumerable: false,
            writable: true,
            configurable: true
        }
    });
};

exports.mixin = function(obj, mixin) {
    for (var key in mixin) {
        obj[key] = mixin[key];
    }
    return obj;
};

exports.implement = function(proto, mixin) {
    exports.mixin(proto, mixin);
};

});

define("ace/range",[], function(require, exports, module) {
"use strict";
var comparePoints = function(p1, p2) {
    return p1.row - p2.row || p1.column - p2.column;
};
var Range = function(startRow, startColumn, endRow, endColumn) {
    this.start = {
        row: startRow,
        column: startColumn
    };

    this.end = {
        row: endRow,
        column: endColumn
    };
};

(function() {
    this.isEqual = function(range) {
        return this.start.row === range.start.row &&
            this.end.row === range.end.row &&
            this.start.column === range.start.column &&
            this.end.column === range.end.column;
    };
    this.toString = function() {
        return ("Range: [" + this.start.row + "/" + this.start.column +
            "] -> [" + this.end.row + "/" + this.end.column + "]");
    };

    this.contains = function(row, column) {
        return this.compare(row, column) == 0;
    };
    this.compareRange = function(range) {
        var cmp,
            end = range.end,
            start = range.start;

        cmp = this.compare(end.row, end.column);
        if (cmp == 1) {
            cmp = this.compare(start.row, start.column);
            if (cmp == 1) {
                return 2;
            } else if (cmp == 0) {
                return 1;
            } else {
                return 0;
            }
        } else if (cmp == -1) {
            return -2;
        } else {
            cmp = this.compare(start.row, start.column);
            if (cmp == -1) {
                return -1;
            } else if (cmp == 1) {
                return 42;
            } else {
                return 0;
            }
        }
    };
    this.comparePoint = function(p) {
        return this.compare(p.row, p.column);
    };
    this.containsRange = function(range) {
        return this.comparePoint(range.start) == 0 && this.comparePoint(range.end) == 0;
    };
    this.intersects = function(range) {
        var cmp = this.compareRange(range);
        return (cmp == -1 || cmp == 0 || cmp == 1);
    };
    this.isEnd = function(row, column) {
        return this.end.row == row && this.end.column == column;
    };
    this.isStart = function(row, column) {
        return this.start.row == row && this.start.column == column;
    };
    this.setStart = function(row, column) {
        if (typeof row == "object") {
            this.start.column = row.column;
            this.start.row = row.row;
        } else {
            this.start.row = row;
            this.start.column = column;
        }
    };
    this.setEnd = function(row, column) {
        if (typeof row == "object") {
            this.end.column = row.column;
            this.end.row = row.row;
        } else {
            this.end.row = row;
            this.end.column = column;
        }
    };
    this.inside = function(row, column) {
        if (this.compare(row, column) == 0) {
            if (this.isEnd(row, column) || this.isStart(row, column)) {
                return false;
            } else {
                return true;
            }
        }
        return false;
    };
    this.insideStart = function(row, column) {
        if (this.compare(row, column) == 0) {
            if (this.isEnd(row, column)) {
                return false;
            } else {
                return true;
            }
        }
        return false;
    };
    this.insideEnd = function(row, column) {
        if (this.compare(row, column) == 0) {
            if (this.isStart(row, column)) {
                return false;
            } else {
                return true;
            }
        }
        return false;
    };
    this.compare = function(row, column) {
        if (!this.isMultiLine()) {
            if (row === this.start.row) {
                return column < this.start.column ? -1 : (column > this.end.column ? 1 : 0);
            }
        }

        if (row < this.start.row)
            return -1;

        if (row > this.end.row)
            return 1;

        if (this.start.row === row)
            return column >= this.start.column ? 0 : -1;

        if (this.end.row === row)
            return column <= this.end.column ? 0 : 1;

        return 0;
    };
    this.compareStart = function(row, column) {
        if (this.start.row == row && this.start.column == column) {
            return -1;
        } else {
            return this.compare(row, column);
        }
    };
    this.compareEnd = function(row, column) {
        if (this.end.row == row && this.end.column == column) {
            return 1;
        } else {
            return this.compare(row, column);
        }
    };
    this.compareInside = function(row, column) {
        if (this.end.row == row && this.end.column == column) {
            return 1;
        } else if (this.start.row == row && this.start.column == column) {
            return -1;
        } else {
            return this.compare(row, column);
        }
    };
    this.clipRows = function(firstRow, lastRow) {
        if (this.end.row > lastRow)
            var end = {row: lastRow + 1, column: 0};
        else if (this.end.row < firstRow)
            var end = {row: firstRow, column: 0};

        if (this.start.row > lastRow)
            var start = {row: lastRow + 1, column: 0};
        else if (this.start.row < firstRow)
            var start = {row: firstRow, column: 0};

        return Range.fromPoints(start || this.start, end || this.end);
    };
    this.extend = function(row, column) {
        var cmp = this.compare(row, column);

        if (cmp == 0)
            return this;
        else if (cmp == -1)
            var start = {row: row, column: column};
        else
            var end = {row: row, column: column};

        return Range.fromPoints(start || this.start, end || this.end);
    };

    this.isEmpty = function() {
        return (this.start.row === this.end.row && this.start.column === this.end.column);
    };
    this.isMultiLine = function() {
        return (this.start.row !== this.end.row);
    };
    this.clone = function() {
        return Range.fromPoints(this.start, this.end);
    };
    this.collapseRows = function() {
        if (this.end.column == 0)
            return new Range(this.start.row, 0, Math.max(this.start.row, this.end.row-1), 0);
        else
            return new Range(this.start.row, 0, this.end.row, 0);
    };
    this.toScreenRange = function(session) {
        var screenPosStart = session.documentToScreenPosition(this.start);
        var screenPosEnd = session.documentToScreenPosition(this.end);

        return new Range(
            screenPosStart.row, screenPosStart.column,
            screenPosEnd.row, screenPosEnd.column
        );
    };
    this.moveBy = function(row, column) {
        this.start.row += row;
        this.start.column += column;
        this.end.row += row;
        this.end.column += column;
    };

}).call(Range.prototype);
Range.fromPoints = function(start, end) {
    return new Range(start.row, start.column, end.row, end.column);
};
Range.comparePoints = comparePoints;

Range.comparePoints = function(p1, p2) {
    return p1.row - p2.row || p1.column - p2.column;
};


exports.Range = Range;
});

define("ace/apply_delta",[], function(require, exports, module) {
"use strict";

function throwDeltaError(delta, errorText){
    console.log("Invalid Delta:", delta);
    throw "Invalid Delta: " + errorText;
}

function positionInDocument(docLines, position) {
    return position.row    >= 0 && position.row    <  docLines.length &&
           position.column >= 0 && position.column <= docLines[position.row].length;
}

function validateDelta(docLines, delta) {
    if (delta.action != "insert" && delta.action != "remove")
        throwDeltaError(delta, "delta.action must be 'insert' or 'remove'");
    if (!(delta.lines instanceof Array))
        throwDeltaError(delta, "delta.lines must be an Array");
    if (!delta.start || !delta.end)
       throwDeltaError(delta, "delta.start/end must be an present");
    var start = delta.start;
    if (!positionInDocument(docLines, delta.start))
        throwDeltaError(delta, "delta.start must be contained in document");
    var end = delta.end;
    if (delta.action == "remove" && !positionInDocument(docLines, end))
        throwDeltaError(delta, "delta.end must contained in document for 'remove' actions");
    var numRangeRows = end.row - start.row;
    var numRangeLastLineChars = (end.column - (numRangeRows == 0 ? start.column : 0));
    if (numRangeRows != delta.lines.length - 1 || delta.lines[numRangeRows].length != numRangeLastLineChars)
        throwDeltaError(delta, "delta.range must match delta lines");
}

exports.applyDelta = function(docLines, delta, doNotValidate) {
    
    var row = delta.start.row;
    var startColumn = delta.start.column;
    var line = docLines[row] || "";
    switch (delta.action) {
        case "insert":
            var lines = delta.lines;
            if (lines.length === 1) {
                docLines[row] = line.substring(0, startColumn) + delta.lines[0] + line.substring(startColumn);
            } else {
                var args = [row, 1].concat(delta.lines);
                docLines.splice.apply(docLines, args);
                docLines[row] = line.substring(0, startColumn) + docLines[row];
                docLines[row + delta.lines.length - 1] += line.substring(startColumn);
            }
            break;
        case "remove":
            var endColumn = delta.end.column;
            var endRow = delta.end.row;
            if (row === endRow) {
                docLines[row] = line.substring(0, startColumn) + line.substring(endColumn);
            } else {
                docLines.splice(
                    row, endRow - row + 1,
                    line.substring(0, startColumn) + docLines[endRow].substring(endColumn)
                );
            }
            break;
    }
};
});

define("ace/lib/event_emitter",[], function(require, exports, module) {
"use strict";

var EventEmitter = {};
var stopPropagation = function() { this.propagationStopped = true; };
var preventDefault = function() { this.defaultPrevented = true; };

EventEmitter._emit =
EventEmitter._dispatchEvent = function(eventName, e) {
    this._eventRegistry || (this._eventRegistry = {});
    this._defaultHandlers || (this._defaultHandlers = {});

    var listeners = this._eventRegistry[eventName] || [];
    var defaultHandler = this._defaultHandlers[eventName];
    if (!listeners.length && !defaultHandler)
        return;

    if (typeof e != "object" || !e)
        e = {};

    if (!e.type)
        e.type = eventName;
    if (!e.stopPropagation)
        e.stopPropagation = stopPropagation;
    if (!e.preventDefault)
        e.preventDefault = preventDefault;

    listeners = listeners.slice();
    for (var i=0; i<listeners.length; i++) {
        listeners[i](e, this);
        if (e.propagationStopped)
            break;
    }
    
    if (defaultHandler && !e.defaultPrevented)
        return defaultHandler(e, this);
};


EventEmitter._signal = function(eventName, e) {
    var listeners = (this._eventRegistry || {})[eventName];
    if (!listeners)
        return;
    listeners = listeners.slice();
    for (var i=0; i<listeners.length; i++)
        listeners[i](e, this);
};

EventEmitter.once = function(eventName, callback) {
    var _self = this;
    this.on(eventName, function newCallback() {
        _self.off(eventName, newCallback);
        callback.apply(null, arguments);
    });
    if (!callback) {
        return new Promise(function(resolve) {
            callback = resolve;
        });
    }
};


EventEmitter.setDefaultHandler = function(eventName, callback) {
    var handlers = this._defaultHandlers;
    if (!handlers)
        handlers = this._defaultHandlers = {_disabled_: {}};
    
    if (handlers[eventName]) {
        var old = handlers[eventName];
        var disabled = handlers._disabled_[eventName];
        if (!disabled)
            handlers._disabled_[eventName] = disabled = [];
        disabled.push(old);
        var i = disabled.indexOf(callback);
        if (i != -1) 
            disabled.splice(i, 1);
    }
    handlers[eventName] = callback;
};
EventEmitter.removeDefaultHandler = function(eventName, callback) {
    var handlers = this._defaultHandlers;
    if (!handlers)
        return;
    var disabled = handlers._disabled_[eventName];
    
    if (handlers[eventName] == callback) {
        if (disabled)
            this.setDefaultHandler(eventName, disabled.pop());
    } else if (disabled) {
        var i = disabled.indexOf(callback);
        if (i != -1)
            disabled.splice(i, 1);
    }
};

EventEmitter.on =
EventEmitter.addEventListener = function(eventName, callback, capturing) {
    this._eventRegistry = this._eventRegistry || {};

    var listeners = this._eventRegistry[eventName];
    if (!listeners)
        listeners = this._eventRegistry[eventName] = [];

    if (listeners.indexOf(callback) == -1)
        listeners[capturing ? "unshift" : "push"](callback);
    return callback;
};

EventEmitter.off =
EventEmitter.removeListener =
EventEmitter.removeEventListener = function(eventName, callback) {
    this._eventRegistry = this._eventRegistry || {};

    var listeners = this._eventRegistry[eventName];
    if (!listeners)
        return;

    var index = listeners.indexOf(callback);
    if (index !== -1)
        listeners.splice(index, 1);
};

EventEmitter.removeAllListeners = function(eventName) {
    if (!eventName) this._eventRegistry = this._defaultHandlers = undefined;
    if (this._eventRegistry) this._eventRegistry[eventName] = undefined;
    if (this._defaultHandlers) this._defaultHandlers[eventName] = undefined;
};

exports.EventEmitter = EventEmitter;

});

define("ace/anchor",[], function(require, exports, module) {
"use strict";

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

var Anchor = exports.Anchor = function(doc, row, column) {
    this.$onChange = this.onChange.bind(this);
    this.attach(doc);
    
    if (typeof column == "undefined")
        this.setPosition(row.row, row.column);
    else
        this.setPosition(row, column);
};

(function() {

    oop.implement(this, EventEmitter);
    this.getPosition = function() {
        return this.$clipPositionToDocument(this.row, this.column);
    };
    this.getDocument = function() {
        return this.document;
    };
    this.$insertRight = false;
    this.onChange = function(delta) {
        if (delta.start.row == delta.end.row && delta.start.row != this.row)
            return;

        if (delta.start.row > this.row)
            return;
            
        var point = $getTransformedPoint(delta, {row: this.row, column: this.column}, this.$insertRight);
        this.setPosition(point.row, point.column, true);
    };
    
    function $pointsInOrder(point1, point2, equalPointsInOrder) {
        var bColIsAfter = equalPointsInOrder ? point1.column <= point2.column : point1.column < point2.column;
        return (point1.row < point2.row) || (point1.row == point2.row && bColIsAfter);
    }
            
    function $getTransformedPoint(delta, point, moveIfEqual) {
        var deltaIsInsert = delta.action == "insert";
        var deltaRowShift = (deltaIsInsert ? 1 : -1) * (delta.end.row    - delta.start.row);
        var deltaColShift = (deltaIsInsert ? 1 : -1) * (delta.end.column - delta.start.column);
        var deltaStart = delta.start;
        var deltaEnd = deltaIsInsert ? deltaStart : delta.end; // Collapse insert range.
        if ($pointsInOrder(point, deltaStart, moveIfEqual)) {
            return {
                row: point.row,
                column: point.column
            };
        }
        if ($pointsInOrder(deltaEnd, point, !moveIfEqual)) {
            return {
                row: point.row + deltaRowShift,
                column: point.column + (point.row == deltaEnd.row ? deltaColShift : 0)
            };
        }
        
        return {
            row: deltaStart.row,
            column: deltaStart.column
        };
    }
    this.setPosition = function(row, column, noClip) {
        var pos;
        if (noClip) {
            pos = {
                row: row,
                column: column
            };
        } else {
            pos = this.$clipPositionToDocument(row, column);
        }

        if (this.row == pos.row && this.column == pos.column)
            return;

        var old = {
            row: this.row,
            column: this.column
        };

        this.row = pos.row;
        this.column = pos.column;
        this._signal("change", {
            old: old,
            value: pos
        });
    };
    this.detach = function() {
        this.document.off("change", this.$onChange);
    };
    this.attach = function(doc) {
        this.document = doc || this.document;
        this.document.on("change", this.$onChange);
    };
    this.$clipPositionToDocument = function(row, column) {
        var pos = {};

        if (row >= this.document.getLength()) {
            pos.row = Math.max(0, this.document.getLength() - 1);
            pos.column = this.document.getLine(pos.row).length;
        }
        else if (row < 0) {
            pos.row = 0;
            pos.column = 0;
        }
        else {
            pos.row = row;
            pos.column = Math.min(this.document.getLine(pos.row).length, Math.max(0, column));
        }

        if (column < 0)
            pos.column = 0;

        return pos;
    };

}).call(Anchor.prototype);

});

define("ace/document",[], function(require, exports, module) {
"use strict";

var oop = require("./lib/oop");
var applyDelta = require("./apply_delta").applyDelta;
var EventEmitter = require("./lib/event_emitter").EventEmitter;
var Range = require("./range").Range;
var Anchor = require("./anchor").Anchor;

var Document = function(textOrLines) {
    this.$lines = [""];
    if (textOrLines.length === 0) {
        this.$lines = [""];
    } else if (Array.isArray(textOrLines)) {
        this.insertMergedLines({row: 0, column: 0}, textOrLines);
    } else {
        this.insert({row: 0, column:0}, textOrLines);
    }
};

(function() {

    oop.implement(this, EventEmitter);
    this.setValue = function(text) {
        var len = this.getLength() - 1;
        this.remove(new Range(0, 0, len, this.getLine(len).length));
        this.insert({row: 0, column: 0}, text);
    };
    this.getValue = function() {
        return this.getAllLines().join(this.getNewLineCharacter());
    };
    this.createAnchor = function(row, column) {
        return new Anchor(this, row, column);
    };
    if ("aaa".split(/a/).length === 0) {
        this.$split = function(text) {
            return text.replace(/\r\n|\r/g, "\n").split("\n");
        };
    } else {
        this.$split = function(text) {
            return text.split(/\r\n|\r|\n/);
        };
    }


    this.$detectNewLine = function(text) {
        var match = text.match(/^.*?(\r\n|\r|\n)/m);
        this.$autoNewLine = match ? match[1] : "\n";
        this._signal("changeNewLineMode");
    };
    this.getNewLineCharacter = function() {
        switch (this.$newLineMode) {
          case "windows":
            return "\r\n";
          case "unix":
            return "\n";
          default:
            return this.$autoNewLine || "\n";
        }
    };

    this.$autoNewLine = "";
    this.$newLineMode = "auto";
    this.setNewLineMode = function(newLineMode) {
        if (this.$newLineMode === newLineMode)
            return;

        this.$newLineMode = newLineMode;
        this._signal("changeNewLineMode");
    };
    this.getNewLineMode = function() {
        return this.$newLineMode;
    };
    this.isNewLine = function(text) {
        return (text == "\r\n" || text == "\r" || text == "\n");
    };
    this.getLine = function(row) {
        return this.$lines[row] || "";
    };
    this.getLines = function(firstRow, lastRow) {
        return this.$lines.slice(firstRow, lastRow + 1);
    };
    this.getAllLines = function() {
        return this.getLines(0, this.getLength());
    };
    this.getLength = function() {
        return this.$lines.length;
    };
    this.getTextRange = function(range) {
        return this.getLinesForRange(range).join(this.getNewLineCharacter());
    };
    this.getLinesForRange = function(range) {
        var lines;
        if (range.start.row === range.end.row) {
            lines = [this.getLine(range.start.row).substring(range.start.column, range.end.column)];
        } else {
            lines = this.getLines(range.start.row, range.end.row);
            lines[0] = (lines[0] || "").substring(range.start.column);
            var l = lines.length - 1;
            if (range.end.row - range.start.row == l)
                lines[l] = lines[l].substring(0, range.end.column);
        }
        return lines;
    };
    this.insertLines = function(row, lines) {
        console.warn("Use of document.insertLines is deprecated. Use the insertFullLines method instead.");
        return this.insertFullLines(row, lines);
    };
    this.removeLines = function(firstRow, lastRow) {
        console.warn("Use of document.removeLines is deprecated. Use the removeFullLines method instead.");
        return this.removeFullLines(firstRow, lastRow);
    };
    this.insertNewLine = function(position) {
        console.warn("Use of document.insertNewLine is deprecated. Use insertMergedLines(position, ['', '']) instead.");
        return this.insertMergedLines(position, ["", ""]);
    };
    this.insert = function(position, text) {
        if (this.getLength() <= 1)
            this.$detectNewLine(text);
        
        return this.insertMergedLines(position, this.$split(text));
    };
    this.insertInLine = function(position, text) {
        var start = this.clippedPos(position.row, position.column);
        var end = this.pos(position.row, position.column + text.length);
        
        this.applyDelta({
            start: start,
            end: end,
            action: "insert",
            lines: [text]
        }, true);
        
        return this.clonePos(end);
    };
    
    this.clippedPos = function(row, column) {
        var length = this.getLength();
        if (row === undefined) {
            row = length;
        } else if (row < 0) {
            row = 0;
        } else if (row >= length) {
            row = length - 1;
            column = undefined;
        }
        var line = this.getLine(row);
        if (column == undefined)
            column = line.length;
        column = Math.min(Math.max(column, 0), line.length);
        return {row: row, column: column};
    };
    
    this.clonePos = function(pos) {
        return {row: pos.row, column: pos.column};
    };
    
    this.pos = function(row, column) {
        return {row: row, column: column};
    };
    
    this.$clipPosition = function(position) {
        var length = this.getLength();
        if (position.row >= length) {
            position.row = Math.max(0, length - 1);
            position.column = this.getLine(length - 1).length;
        } else {
            position.row = Math.max(0, position.row);
            position.column = Math.min(Math.max(position.column, 0), this.getLine(position.row).length);
        }
        return position;
    };
    this.insertFullLines = function(row, lines) {
        row = Math.min(Math.max(row, 0), this.getLength());
        var column = 0;
        if (row < this.getLength()) {
            lines = lines.concat([""]);
            column = 0;
        } else {
            lines = [""].concat(lines);
            row--;
            column = this.$lines[row].length;
        }
        this.insertMergedLines({row: row, column: column}, lines);
    };    
    this.insertMergedLines = function(position, lines) {
        var start = this.clippedPos(position.row, position.column);
        var end = {
            row: start.row + lines.length - 1,
            column: (lines.length == 1 ? start.column : 0) + lines[lines.length - 1].length
        };
        
        this.applyDelta({
            start: start,
            end: end,
            action: "insert",
            lines: lines
        });
        
        return this.clonePos(end);
    };
    this.remove = function(range) {
        var start = this.clippedPos(range.start.row, range.start.column);
        var end = this.clippedPos(range.end.row, range.end.column);
        this.applyDelta({
            start: start,
            end: end,
            action: "remove",
            lines: this.getLinesForRange({start: start, end: end})
        });
        return this.clonePos(start);
    };
    this.removeInLine = function(row, startColumn, endColumn) {
        var start = this.clippedPos(row, startColumn);
        var end = this.clippedPos(row, endColumn);
        
        this.applyDelta({
            start: start,
            end: end,
            action: "remove",
            lines: this.getLinesForRange({start: start, end: end})
        }, true);
        
        return this.clonePos(start);
    };
    this.removeFullLines = function(firstRow, lastRow) {
        firstRow = Math.min(Math.max(0, firstRow), this.getLength() - 1);
        lastRow  = Math.min(Math.max(0, lastRow ), this.getLength() - 1);
        var deleteFirstNewLine = lastRow == this.getLength() - 1 && firstRow > 0;
        var deleteLastNewLine  = lastRow  < this.getLength() - 1;
        var startRow = ( deleteFirstNewLine ? firstRow - 1                  : firstRow                    );
        var startCol = ( deleteFirstNewLine ? this.getLine(startRow).length : 0                           );
        var endRow   = ( deleteLastNewLine  ? lastRow + 1                   : lastRow                     );
        var endCol   = ( deleteLastNewLine  ? 0                             : this.getLine(endRow).length ); 
        var range = new Range(startRow, startCol, endRow, endCol);
        var deletedLines = this.$lines.slice(firstRow, lastRow + 1);
        
        this.applyDelta({
            start: range.start,
            end: range.end,
            action: "remove",
            lines: this.getLinesForRange(range)
        });
        return deletedLines;
    };
    this.removeNewLine = function(row) {
        if (row < this.getLength() - 1 && row >= 0) {
            this.applyDelta({
                start: this.pos(row, this.getLine(row).length),
                end: this.pos(row + 1, 0),
                action: "remove",
                lines: ["", ""]
            });
        }
    };
    this.replace = function(range, text) {
        if (!(range instanceof Range))
            range = Range.fromPoints(range.start, range.end);
        if (text.length === 0 && range.isEmpty())
            return range.start;
        if (text == this.getTextRange(range))
            return range.end;

        this.remove(range);
        var end;
        if (text) {
            end = this.insert(range.start, text);
        }
        else {
            end = range.start;
        }
        
        return end;
    };
    this.applyDeltas = function(deltas) {
        for (var i=0; i<deltas.length; i++) {
            this.applyDelta(deltas[i]);
        }
    };
    this.revertDeltas = function(deltas) {
        for (var i=deltas.length-1; i>=0; i--) {
            this.revertDelta(deltas[i]);
        }
    };
    this.applyDelta = function(delta, doNotValidate) {
        var isInsert = delta.action == "insert";
        if (isInsert ? delta.lines.length <= 1 && !delta.lines[0]
            : !Range.comparePoints(delta.start, delta.end)) {
            return;
        }
        
        if (isInsert && delta.lines.length > 20000) {
            this.$splitAndapplyLargeDelta(delta, 20000);
        }
        else {
            applyDelta(this.$lines, delta, doNotValidate);
            this._signal("change", delta);
        }
    };
    
    this.$safeApplyDelta = function(delta) {
        var docLength = this.$lines.length;
        if (
            delta.action == "remove" && delta.start.row < docLength && delta.end.row < docLength
            || delta.action == "insert" && delta.start.row <= docLength
        ) {
            this.applyDelta(delta);
        }
    };
    
    this.$splitAndapplyLargeDelta = function(delta, MAX) {
        var lines = delta.lines;
        var l = lines.length - MAX + 1;
        var row = delta.start.row; 
        var column = delta.start.column;
        for (var from = 0, to = 0; from < l; from = to) {
            to += MAX - 1;
            var chunk = lines.slice(from, to);
            chunk.push("");
            this.applyDelta({
                start: this.pos(row + from, column),
                end: this.pos(row + to, column = 0),
                action: delta.action,
                lines: chunk
            }, true);
        }
        delta.lines = lines.slice(from);
        delta.start.row = row + from;
        delta.start.column = column;
        this.applyDelta(delta, true);
    };
    this.revertDelta = function(delta) {
        this.$safeApplyDelta({
            start: this.clonePos(delta.start),
            end: this.clonePos(delta.end),
            action: (delta.action == "insert" ? "remove" : "insert"),
            lines: delta.lines.slice()
        });
    };
    this.indexToPosition = function(index, startRow) {
        var lines = this.$lines || this.getAllLines();
        var newlineLength = this.getNewLineCharacter().length;
        for (var i = startRow || 0, l = lines.length; i < l; i++) {
            index -= lines[i].length + newlineLength;
            if (index < 0)
                return {row: i, column: index + lines[i].length + newlineLength};
        }
        return {row: l-1, column: index + lines[l-1].length + newlineLength};
    };
    this.positionToIndex = function(pos, startRow) {
        var lines = this.$lines || this.getAllLines();
        var newlineLength = this.getNewLineCharacter().length;
        var index = 0;
        var row = Math.min(pos.row, lines.length);
        for (var i = startRow || 0; i < row; ++i)
            index += lines[i].length + newlineLength;

        return index + pos.column;
    };

}).call(Document.prototype);

exports.Document = Document;
});

define("ace/lib/lang",[], function(require, exports, module) {
"use strict";

exports.last = function(a) {
    return a[a.length - 1];
};

exports.stringReverse = function(string) {
    return string.split("").reverse().join("");
};

exports.stringRepeat = function (string, count) {
    var result = '';
    while (count > 0) {
        if (count & 1)
            result += string;

        if (count >>= 1)
            string += string;
    }
    return result;
};

var trimBeginRegexp = /^\s\s*/;
var trimEndRegexp = /\s\s*$/;

exports.stringTrimLeft = function (string) {
    return string.replace(trimBeginRegexp, '');
};

exports.stringTrimRight = function (string) {
    return string.replace(trimEndRegexp, '');
};

exports.copyObject = function(obj) {
    var copy = {};
    for (var key in obj) {
        copy[key] = obj[key];
    }
    return copy;
};

exports.copyArray = function(array){
    var copy = [];
    for (var i=0, l=array.length; i<l; i++) {
        if (array[i] && typeof array[i] == "object")
            copy[i] = this.copyObject(array[i]);
        else 
            copy[i] = array[i];
    }
    return copy;
};

exports.deepCopy = function deepCopy(obj) {
    if (typeof obj !== "object" || !obj)
        return obj;
    var copy;
    if (Array.isArray(obj)) {
        copy = [];
        for (var key = 0; key < obj.length; key++) {
            copy[key] = deepCopy(obj[key]);
        }
        return copy;
    }
    if (Object.prototype.toString.call(obj) !== "[object Object]")
        return obj;
    
    copy = {};
    for (var key in obj)
        copy[key] = deepCopy(obj[key]);
    return copy;
};

exports.arrayToMap = function(arr) {
    var map = {};
    for (var i=0; i<arr.length; i++) {
        map[arr[i]] = 1;
    }
    return map;

};

exports.createMap = function(props) {
    var map = Object.create(null);
    for (var i in props) {
        map[i] = props[i];
    }
    return map;
};
exports.arrayRemove = function(array, value) {
  for (var i = 0; i <= array.length; i++) {
    if (value === array[i]) {
      array.splice(i, 1);
    }
  }
};

exports.escapeRegExp = function(str) {
    return str.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1');
};

exports.escapeHTML = function(str) {
    return ("" + str).replace(/&/g, "&#38;").replace(/"/g, "&#34;").replace(/'/g, "&#39;").replace(/</g, "&#60;");
};

exports.getMatchOffsets = function(string, regExp) {
    var matches = [];

    string.replace(regExp, function(str) {
        matches.push({
            offset: arguments[arguments.length-2],
            length: str.length
        });
    });

    return matches;
};
exports.deferredCall = function(fcn) {
    var timer = null;
    var callback = function() {
        timer = null;
        fcn();
    };

    var deferred = function(timeout) {
        deferred.cancel();
        timer = setTimeout(callback, timeout || 0);
        return deferred;
    };

    deferred.schedule = deferred;

    deferred.call = function() {
        this.cancel();
        fcn();
        return deferred;
    };

    deferred.cancel = function() {
        clearTimeout(timer);
        timer = null;
        return deferred;
    };
    
    deferred.isPending = function() {
        return timer;
    };

    return deferred;
};


exports.delayedCall = function(fcn, defaultTimeout) {
    var timer = null;
    var callback = function() {
        timer = null;
        fcn();
    };

    var _self = function(timeout) {
        if (timer == null)
            timer = setTimeout(callback, timeout || defaultTimeout);
    };

    _self.delay = function(timeout) {
        timer && clearTimeout(timer);
        timer = setTimeout(callback, timeout || defaultTimeout);
    };
    _self.schedule = _self;

    _self.call = function() {
        this.cancel();
        fcn();
    };

    _self.cancel = function() {
        timer && clearTimeout(timer);
        timer = null;
    };

    _self.isPending = function() {
        return timer;
    };

    return _self;
};
});

define("ace/worker/mirror",[], function(require, exports, module) {
"use strict";

var Range = require("../range").Range;
var Document = require("../document").Document;
var lang = require("../lib/lang");
    
var Mirror = exports.Mirror = function(sender) {
    this.sender = sender;
    var doc = this.doc = new Document("");
    
    var deferredUpdate = this.deferredUpdate = lang.delayedCall(this.onUpdate.bind(this));
    
    var _self = this;
    sender.on("change", function(e) {
        var data = e.data;
        if (data[0].start) {
            doc.applyDeltas(data);
        } else {
            for (var i = 0; i < data.length; i += 2) {
                if (Array.isArray(data[i+1])) {
                    var d = {action: "insert", start: data[i], lines: data[i+1]};
                } else {
                    var d = {action: "remove", start: data[i], end: data[i+1]};
                }
                doc.applyDelta(d, true);
            }
        }
        if (_self.$timeout)
            return deferredUpdate.schedule(_self.$timeout);
        _self.onUpdate();
    });
};

(function() {
    
    this.$timeout = 500;
    
    this.setTimeout = function(timeout) {
        this.$timeout = timeout;
    };
    
    this.setValue = function(value) {
        this.doc.setValue(value);
        this.deferredUpdate.schedule(this.$timeout);
    };
    
    this.getValue = function(callbackId) {
        this.sender.callback(this.doc.getValue(), callbackId);
    };
    
    this.onUpdate = function() {
    };
    
    this.isPending = function() {
        return this.deferredUpdate.isPending();
    };
    
}).call(Mirror.prototype);

});

define("ace/mode/lua/luaparse",[], function(require, exports, module) {

(function (root, name, factory) {
   factory(exports)
}(this, 'luaparse', function (exports) {
  'use strict';

  exports.version = "0.3.1";

  var input, options, length, features, encodingMode;
  var defaultOptions = exports.defaultOptions = {
      wait: false
    , comments: true
    , scope: false
    , locations: false
    , ranges: false
    , onCreateNode: null
    , onCreateScope: null
    , onDestroyScope: null
    , onLocalDeclaration: null
    , luaVersion: '5.1'
    , encodingMode: 'none'
  };

  function encodeUTF8(codepoint, highMask) {
    highMask = highMask || 0;

    if (codepoint < 0x80) {
      return String.fromCharCode(codepoint);
    } else if (codepoint < 0x800) {
      return String.fromCharCode(
        highMask | 0xc0 |  (codepoint >>  6)        ,
        highMask | 0x80 | ( codepoint        & 0x3f)
      );
    } else if (codepoint < 0x10000) {
      return String.fromCharCode(
        highMask | 0xe0 |  (codepoint >> 12)        ,
        highMask | 0x80 | ((codepoint >>  6) & 0x3f),
        highMask | 0x80 | ( codepoint        & 0x3f)
      );
    } else /* istanbul ignore else */ if (codepoint < 0x110000) {
      return String.fromCharCode(
        highMask | 0xf0 |  (codepoint >> 18)        ,
        highMask | 0x80 | ((codepoint >> 12) & 0x3f),
        highMask | 0x80 | ((codepoint >>  6) & 0x3f),
        highMask | 0x80 | ( codepoint        & 0x3f)
      );
    } else {
      return null;
    }
  }

  function toHex(num, digits) {
    var result = num.toString(16);
    while (result.length < digits)
      result = '0' + result;
    return result;
  }

  function checkChars(rx) {
    return function (s) {
      var m = rx.exec(s);
      if (!m)
        return s;
      raise(null, errors.invalidCodeUnit, toHex(m[0].charCodeAt(0), 4).toUpperCase());
    };
  }

  var encodingModes = {
    'pseudo-latin1': {
      fixup: checkChars(/[^\x00-\xff]/),
      encodeByte: function (value) {
        if (value === null)
          return '';
        return String.fromCharCode(value);
      },
      encodeUTF8: function (codepoint) {
        return encodeUTF8(codepoint);
      },
    },
    'x-user-defined': {
      fixup: checkChars(/[^\x00-\x7f\uf780-\uf7ff]/),
      encodeByte: function (value) {
        if (value === null)
          return '';
        if (value >= 0x80)
          return String.fromCharCode(value | 0xf700);
        return String.fromCharCode(value);
      },
      encodeUTF8: function (codepoint) {
        return encodeUTF8(codepoint, 0xf700);
      }
    },
    'none': {
      discardStrings: true,
      fixup: function (s) {
        return s;
      },
      encodeByte: function (value) {
        return '';
      },
      encodeUTF8: function (codepoint) {
        return '';
      }
    }
  };

  var EOF = 1, StringLiteral = 2, Keyword = 4, Identifier = 8
    , NumericLiteral = 16, Punctuator = 32, BooleanLiteral = 64
    , NilLiteral = 128, VarargLiteral = 256;

  exports.tokenTypes = { EOF: EOF, StringLiteral: StringLiteral
    , Keyword: Keyword, Identifier: Identifier, NumericLiteral: NumericLiteral
    , Punctuator: Punctuator, BooleanLiteral: BooleanLiteral
    , NilLiteral: NilLiteral, VarargLiteral: VarargLiteral
  };

  var errors = exports.errors = {
      unexpected: 'unexpected %1 \'%2\' near \'%3\''
    , unexpectedEOF: 'unexpected symbol near \'<eof>\''
    , expected: '\'%1\' expected near \'%2\''
    , expectedToken: '%1 expected near \'%2\''
    , unfinishedString: 'unfinished string near \'%1\''
    , malformedNumber: 'malformed number near \'%1\''
    , decimalEscapeTooLarge: 'decimal escape too large near \'%1\''
    , invalidEscape: 'invalid escape sequence near \'%1\''
    , hexadecimalDigitExpected: 'hexadecimal digit expected near \'%1\''
    , braceExpected: 'missing \'%1\' near \'%2\''
    , tooLargeCodepoint: 'UTF-8 value too large near \'%1\''
    , unfinishedLongString: 'unfinished long string (starting at line %1) near \'%2\''
    , unfinishedLongComment: 'unfinished long comment (starting at line %1) near \'%2\''
    , ambiguousSyntax: 'ambiguous syntax (function call x new statement) near \'%1\''
    , noLoopToBreak: 'no loop to break near \'%1\''
    , labelAlreadyDefined: 'label \'%1\' already defined on line %2'
    , labelNotVisible: 'no visible label \'%1\' for <goto>'
    , gotoJumpInLocalScope: '<goto %1> jumps into the scope of local \'%2\''
    , cannotUseVararg: 'cannot use \'...\' outside a vararg function near \'%1\''
    , invalidCodeUnit: 'code unit U+%1 is not allowed in the current encoding mode'
  };

  var ast = exports.ast = {
      labelStatement: function(label) {
      return {
          type: 'LabelStatement'
        , label: label
      };
    }

    , breakStatement: function() {
      return {
          type: 'BreakStatement'
      };
    }

    , gotoStatement: function(label) {
      return {
          type: 'GotoStatement'
        , label: label
      };
    }

    , returnStatement: function(args) {
      return {
          type: 'ReturnStatement'
        , 'arguments': args
      };
    }

    , ifStatement: function(clauses) {
      return {
          type: 'IfStatement'
        , clauses: clauses
      };
    }
    , ifClause: function(condition, body) {
      return {
          type: 'IfClause'
        , condition: condition
        , body: body
      };
    }
    , elseifClause: function(condition, body) {
      return {
          type: 'ElseifClause'
        , condition: condition
        , body: body
      };
    }
    , elseClause: function(body) {
      return {
          type: 'ElseClause'
        , body: body
      };
    }

    , whileStatement: function(condition, body) {
      return {
          type: 'WhileStatement'
        , condition: condition
        , body: body
      };
    }

    , doStatement: function(body) {
      return {
          type: 'DoStatement'
        , body: body
      };
    }

    , repeatStatement: function(condition, body) {
      return {
          type: 'RepeatStatement'
        , condition: condition
        , body: body
      };
    }

    , localStatement: function(variables, init) {
      return {
          type: 'LocalStatement'
        , variables: variables
        , init: init
      };
    }

    , assignmentStatement: function(variables, init) {
      return {
          type: 'AssignmentStatement'
        , variables: variables
        , init: init
      };
    }

    , callStatement: function(expression) {
      return {
          type: 'CallStatement'
        , expression: expression
      };
    }

    , functionStatement: function(identifier, parameters, isLocal, body) {
      return {
          type: 'FunctionDeclaration'
        , identifier: identifier
        , isLocal: isLocal
        , parameters: parameters
        , body: body
      };
    }

    , forNumericStatement: function(variable, start, end, step, body) {
      return {
          type: 'ForNumericStatement'
        , variable: variable
        , start: start
        , end: end
        , step: step
        , body: body
      };
    }

    , forGenericStatement: function(variables, iterators, body) {
      return {
          type: 'ForGenericStatement'
        , variables: variables
        , iterators: iterators
        , body: body
      };
    }

    , chunk: function(body) {
      return {
          type: 'Chunk'
        , body: body
      };
    }

    , identifier: function(name) {
      return {
          type: 'Identifier'
        , name: name
      };
    }

    , literal: function(type, value, raw) {
      type = (type === StringLiteral) ? 'StringLiteral'
        : (type === NumericLiteral) ? 'NumericLiteral'
        : (type === BooleanLiteral) ? 'BooleanLiteral'
        : (type === NilLiteral) ? 'NilLiteral'
        : 'VarargLiteral';

      return {
          type: type
        , value: value
        , raw: raw
      };
    }

    , tableKey: function(key, value) {
      return {
          type: 'TableKey'
        , key: key
        , value: value
      };
    }
    , tableKeyString: function(key, value) {
      return {
          type: 'TableKeyString'
        , key: key
        , value: value
      };
    }
    , tableValue: function(value) {
      return {
          type: 'TableValue'
        , value: value
      };
    }


    , tableConstructorExpression: function(fields) {
      return {
          type: 'TableConstructorExpression'
        , fields: fields
      };
    }
    , binaryExpression: function(operator, left, right) {
      var type = ('and' === operator || 'or' === operator) ?
        'LogicalExpression' :
        'BinaryExpression';

      return {
          type: type
        , operator: operator
        , left: left
        , right: right
      };
    }
    , unaryExpression: function(operator, argument) {
      return {
          type: 'UnaryExpression'
        , operator: operator
        , argument: argument
      };
    }
    , memberExpression: function(base, indexer, identifier) {
      return {
          type: 'MemberExpression'
        , indexer: indexer
        , identifier: identifier
        , base: base
      };
    }

    , indexExpression: function(base, index) {
      return {
          type: 'IndexExpression'
        , base: base
        , index: index
      };
    }

    , callExpression: function(base, args) {
      return {
          type: 'CallExpression'
        , base: base
        , 'arguments': args
      };
    }

    , tableCallExpression: function(base, args) {
      return {
          type: 'TableCallExpression'
        , base: base
        , 'arguments': args
      };
    }

    , stringCallExpression: function(base, argument) {
      return {
          type: 'StringCallExpression'
        , base: base
        , argument: argument
      };
    }

    , comment: function(value, raw) {
      return {
          type: 'Comment'
        , value: value
        , raw: raw
      };
    }
  };

  function finishNode(node) {
    if (trackLocations) {
      var location = locations.pop();
      location.complete();
      location.bless(node);
    }
    if (options.onCreateNode) options.onCreateNode(node);
    return node;
  }

  var slice = Array.prototype.slice
    , toString = Object.prototype.toString
    ;

  var indexOf = /* istanbul ignore next */ function (array, element) {
    for (var i = 0, length = array.length; i < length; ++i) {
      if (array[i] === element) return i;
    }
    return -1;
  };
  if (Array.prototype.indexOf)
    indexOf = function (array, element) {
      return array.indexOf(element);
    };

  function indexOfObject(array, property, element) {
    for (var i = 0, length = array.length; i < length; ++i) {
      if (array[i][property] === element) return i;
    }
    return -1;
  }

  function sprintf(format) {
    var args = slice.call(arguments, 1);
    format = format.replace(/%(\d)/g, function (match, index) {
      return '' + args[index - 1] || /* istanbul ignore next */ '';
    });
    return format;
  }

  var assign = /* istanbul ignore next */ function (dest) {
    var args = slice.call(arguments, 1)
      , src, prop;

    for (var i = 0, length = args.length; i < length; ++i) {
      src = args[i];
      for (prop in src)
        if (Object.prototype.hasOwnProperty.call(src, prop)) {
          dest[prop] = src[prop];
        }
    }

    return dest;
  };
  if (Object.assign)
    assign = Object.assign;

  exports.SyntaxError = SyntaxError;

  function fixupError(e) {
    if (!Object.create)
      return e;
    return Object.create(e, {
      'line': { 'writable': true, value: e.line },
      'index': { 'writable': true, value: e.index },
      'column': { 'writable': true, value: e.column }
    });
  }

  function raise(token) {
    var message = sprintf.apply(null, slice.call(arguments, 1))
      , error, col;

    if (token === null || typeof token.line === 'undefined') {
      col = index - lineStart + 1;
      error = fixupError(new SyntaxError(sprintf('[%1:%2] %3', line, col, message)));
      error.index = index;
      error.line = line;
      error.column = col;
    } else {
      col = token.range[0] - token.lineStart;
      error = fixupError(new SyntaxError(sprintf('[%1:%2] %3', token.line, col, message)));
      error.line = token.line;
      error.index = token.range[0];
      error.column = col;
    }
    throw error;
  }

  function tokenValue(token) {
    var raw = input.slice(token.range[0], token.range[1]);
    if (raw)
      return raw;
    return token.value;
  }

  function raiseUnexpectedToken(type, token) {
    raise(token, errors.expectedToken, type, tokenValue(token));
  }

  function unexpected(found) {
    var near = tokenValue(lookahead);
    if ('undefined' !== typeof found.type) {
      var type;
      switch (found.type) {
        case StringLiteral:   type = 'string';      break;
        case Keyword:         type = 'keyword';     break;
        case Identifier:      type = 'identifier';  break;
        case NumericLiteral:  type = 'number';      break;
        case Punctuator:      type = 'symbol';      break;
        case BooleanLiteral:  type = 'boolean';     break;
        case NilLiteral:
          return raise(found, errors.unexpected, 'symbol', 'nil', near);
        case EOF:
          return raise(found, errors.unexpectedEOF);
      }
      return raise(found, errors.unexpected, type, tokenValue(found), near);
    }
    return raise(found, errors.unexpected, 'symbol', found, near);
  }

  var index
    , token
    , previousToken
    , lookahead
    , comments
    , tokenStart
    , line
    , lineStart;

  exports.lex = lex;

  function lex() {
    skipWhiteSpace();
    while (45 === input.charCodeAt(index) &&
           45 === input.charCodeAt(index + 1)) {
      scanComment();
      skipWhiteSpace();
    }
    if (index >= length) return {
        type : EOF
      , value: '<eof>'
      , line: line
      , lineStart: lineStart
      , range: [index, index]
    };

    var charCode = input.charCodeAt(index)
      , next = input.charCodeAt(index + 1);
    tokenStart = index;
    if (isIdentifierStart(charCode)) return scanIdentifierOrKeyword();

    switch (charCode) {
      case 39: case 34: // '"
        return scanStringLiteral();

      case 48: case 49: case 50: case 51: case 52: case 53:
      case 54: case 55: case 56: case 57: // 0-9
        return scanNumericLiteral();

      case 46: // .
        if (isDecDigit(next)) return scanNumericLiteral();
        if (46 === next) {
          if (46 === input.charCodeAt(index + 2)) return scanVarargLiteral();
          return scanPunctuator('..');
        }
        return scanPunctuator('.');

      case 61: // =
        if (61 === next) return scanPunctuator('==');
        return scanPunctuator('=');

      case 62: // >
        if (features.bitwiseOperators)
          if (62 === next) return scanPunctuator('>>');
        if (61 === next) return scanPunctuator('>=');
        return scanPunctuator('>');

      case 60: // <
        if (features.bitwiseOperators)
          if (60 === next) return scanPunctuator('<<');
        if (61 === next) return scanPunctuator('<=');
        return scanPunctuator('<');

      case 126: // ~
        if (61 === next) return scanPunctuator('~=');
        if (!features.bitwiseOperators)
          break;
        return scanPunctuator('~');

      case 58: // :
        if (features.labels)
          if (58 === next) return scanPunctuator('::');
        return scanPunctuator(':');

      case 91: // [
        if (91 === next || 61 === next) return scanLongStringLiteral();
        return scanPunctuator('[');

      case 47: // /
        if (features.integerDivision)
          if (47 === next) return scanPunctuator('//');
        return scanPunctuator('/');

      case 38: case 124: // & |
        if (!features.bitwiseOperators)
          break;
      case 42: case 94: case 37: case 44: case 123: case 125:
      case 93: case 40: case 41: case 59: case 35: case 45:
      case 43: // * ^ % , { } ] ( ) ; # - +
        return scanPunctuator(input.charAt(index));
    }

    return unexpected(input.charAt(index));
  }

  function consumeEOL() {
    var charCode = input.charCodeAt(index)
      , peekCharCode = input.charCodeAt(index + 1);

    if (isLineTerminator(charCode)) {
      if (10 === charCode && 13 === peekCharCode) ++index;
      if (13 === charCode && 10 === peekCharCode) ++index;
      ++line;
      lineStart = ++index;

      return true;
    }
    return false;
  }

  function skipWhiteSpace() {
    while (index < length) {
      var charCode = input.charCodeAt(index);
      if (isWhiteSpace(charCode)) {
        ++index;
      } else if (!consumeEOL()) {
        break;
      }
    }
  }

  function scanIdentifierOrKeyword() {
    var value, type;
    while (isIdentifierPart(input.charCodeAt(++index)));
    value = encodingMode.fixup(input.slice(tokenStart, index));
    if (isKeyword(value)) {
      type = Keyword;
    } else if ('true' === value || 'false' === value) {
      type = BooleanLiteral;
      value = ('true' === value);
    } else if ('nil' === value) {
      type = NilLiteral;
      value = null;
    } else {
      type = Identifier;
    }

    return {
        type: type
      , value: value
      , line: line
      , lineStart: lineStart
      , range: [tokenStart, index]
    };
  }

  function scanPunctuator(value) {
    index += value.length;
    return {
        type: Punctuator
      , value: value
      , line: line
      , lineStart: lineStart
      , range: [tokenStart, index]
    };
  }

  function scanVarargLiteral() {
    index += 3;
    return {
        type: VarargLiteral
      , value: '...'
      , line: line
      , lineStart: lineStart
      , range: [tokenStart, index]
    };
  }

  function scanStringLiteral() {
    var delimiter = input.charCodeAt(index++)
      , beginLine = line
      , beginLineStart = lineStart
      , stringStart = index
      , string = encodingMode.discardStrings ? null : ''
      , charCode;

    for (;;) {
      charCode = input.charCodeAt(index++);
      if (delimiter === charCode) break;
      if (index > length || isLineTerminator(charCode)) {
        string += input.slice(stringStart, index - 1);
        raise(null, errors.unfinishedString, input.slice(tokenStart, index - 1));
      }
      if (92 === charCode) { // backslash
        if (!encodingMode.discardStrings) {
          var beforeEscape = input.slice(stringStart, index - 1);
          string += encodingMode.fixup(beforeEscape);
        }
        var escapeValue = readEscapeSequence();
        if (!encodingMode.discardStrings)
          string += escapeValue;
        stringStart = index;
      }
    }
    if (!encodingMode.discardStrings) {
      string += encodingMode.encodeByte(null);
      string += encodingMode.fixup(input.slice(stringStart, index - 1));
    }

    return {
        type: StringLiteral
      , value: string
      , line: beginLine
      , lineStart: beginLineStart
      , lastLine: line
      , lastLineStart: lineStart
      , range: [tokenStart, index]
    };
  }

  function scanLongStringLiteral() {
    var beginLine = line
      , beginLineStart = lineStart
      , string = readLongString(false);
    if (false === string) raise(token, errors.expected, '[', tokenValue(token));

    return {
        type: StringLiteral
      , value: encodingMode.discardStrings ? null : encodingMode.fixup(string)
      , line: beginLine
      , lineStart: beginLineStart
      , lastLine: line
      , lastLineStart: lineStart
      , range: [tokenStart, index]
    };
  }

  function scanNumericLiteral() {
    var character = input.charAt(index)
      , next = input.charAt(index + 1);

    var literal = ('0' === character && 'xX'.indexOf(next || null) >= 0) ?
      readHexLiteral() : readDecLiteral();

    var foundImaginaryUnit = readImaginaryUnitSuffix()
      , foundInt64Suffix = readInt64Suffix();

    if (foundInt64Suffix && (foundImaginaryUnit || literal.hasFractionPart)) {
      raise(null, errors.malformedNumber, input.slice(tokenStart, index));
    }

    return {
        type: NumericLiteral
      , value: literal.value
      , line: line
      , lineStart: lineStart
      , range: [tokenStart, index]
    };
  }

  function readImaginaryUnitSuffix() {
    if (!features.imaginaryNumbers) return;
    if ('iI'.indexOf(input.charAt(index) || null) >= 0) {
      ++index;
      return true;
    } else {
      return false;
    }
  }

  function readInt64Suffix() {
    if (!features.integerSuffixes) return;

    if ('uU'.indexOf(input.charAt(index) || null) >= 0) {
      ++index;
      if ('lL'.indexOf(input.charAt(index) || null) >= 0) {
        ++index;
        if ('lL'.indexOf(input.charAt(index) || null) >= 0) {
          ++index;
          return 'ULL';
        } else {
          raise(null, errors.malformedNumber, input.slice(tokenStart, index));
        }
      } else {
        raise(null, errors.malformedNumber, input.slice(tokenStart, index));
      }
    } else if ('lL'.indexOf(input.charAt(index) || null) >= 0) {
        ++index;
        if ('lL'.indexOf(input.charAt(index) || null) >= 0) {
          ++index;
          return 'LL';
        } else {
          raise(null, errors.malformedNumber, input.slice(tokenStart, index));
        }
    }
  }

  function readHexLiteral() {
    var fraction = 0 // defaults to 0 as it gets summed
      , binaryExponent = 1 // defaults to 1 as it gets multiplied
      , binarySign = 1 // positive
      , digit, fractionStart, exponentStart, digitStart;

    digitStart = index += 2; // Skip 0x part
    if (!isHexDigit(input.charCodeAt(index)))
      raise(null, errors.malformedNumber, input.slice(tokenStart, index));

    while (isHexDigit(input.charCodeAt(index))) ++index;
    digit = parseInt(input.slice(digitStart, index), 16);
    var foundFraction = false;
    if ('.' === input.charAt(index)) {
      foundFraction = true;
      fractionStart = ++index;

      while (isHexDigit(input.charCodeAt(index))) ++index;
      fraction = input.slice(fractionStart, index);
      fraction = (fractionStart === index) ? 0
        : parseInt(fraction, 16) / Math.pow(16, index - fractionStart);
    }
    var foundBinaryExponent = false;
    if ('pP'.indexOf(input.charAt(index) || null) >= 0) {
      foundBinaryExponent = true;
      ++index;
      if ('+-'.indexOf(input.charAt(index) || null) >= 0)
        binarySign = ('+' === input.charAt(index++)) ? 1 : -1;

      exponentStart = index;
      if (!isDecDigit(input.charCodeAt(index)))
        raise(null, errors.malformedNumber, input.slice(tokenStart, index));

      while (isDecDigit(input.charCodeAt(index))) ++index;
      binaryExponent = input.slice(exponentStart, index);
      binaryExponent = Math.pow(2, binaryExponent * binarySign);
    }

    return {
      value: (digit + fraction) * binaryExponent,
      hasFractionPart: foundFraction || foundBinaryExponent
    };
  }

  function readDecLiteral() {
    while (isDecDigit(input.charCodeAt(index))) ++index;
    var foundFraction = false;
    if ('.' === input.charAt(index)) {
      foundFraction = true;
      ++index;
      while (isDecDigit(input.charCodeAt(index))) ++index;
    }
    var foundExponent = false;
    if ('eE'.indexOf(input.charAt(index) || null) >= 0) {
      foundExponent = true;
      ++index;
      if ('+-'.indexOf(input.charAt(index) || null) >= 0) ++index;
      if (!isDecDigit(input.charCodeAt(index)))
        raise(null, errors.malformedNumber, input.slice(tokenStart, index));

      while (isDecDigit(input.charCodeAt(index))) ++index;
    }

    return {
      value: parseFloat(input.slice(tokenStart, index)),
      hasFractionPart: foundFraction || foundExponent
    };
  }

  function readUnicodeEscapeSequence() {
    var sequenceStart = index++;

    if (input.charAt(index++) !== '{')
      raise(null, errors.braceExpected, '{', '\\' + input.slice(sequenceStart, index));
    if (!isHexDigit(input.charCodeAt(index)))
      raise(null, errors.hexadecimalDigitExpected, '\\' + input.slice(sequenceStart, index));

    while (input.charCodeAt(index) === 0x30) ++index;
    var escStart = index;

    while (isHexDigit(input.charCodeAt(index))) {
      ++index;
      if (index - escStart > 6)
        raise(null, errors.tooLargeCodepoint, '\\' + input.slice(sequenceStart, index));
    }

    var b = input.charAt(index++);
    if (b !== '}') {
      if ((b === '"') || (b === "'"))
        raise(null, errors.braceExpected, '}', '\\' + input.slice(sequenceStart, index--));
      else
        raise(null, errors.hexadecimalDigitExpected, '\\' + input.slice(sequenceStart, index));
    }

    var codepoint = parseInt(input.slice(escStart, index - 1) || '0', 16);
    var frag = '\\' + input.slice(sequenceStart, index);

    if (codepoint > 0x10ffff) {
      raise(null, errors.tooLargeCodepoint, frag);
    }

    return encodingMode.encodeUTF8(codepoint, frag);
  }
  function readEscapeSequence() {
    var sequenceStart = index;
    switch (input.charAt(index)) {
      case 'a': ++index; return '\x07';
      case 'n': ++index; return '\n';
      case 'r': ++index; return '\r';
      case 't': ++index; return '\t';
      case 'v': ++index; return '\x0b';
      case 'b': ++index; return '\b';
      case 'f': ++index; return '\f';
      case '\r':
      case '\n':
        consumeEOL();
        return '\n';

      case '0': case '1': case '2': case '3': case '4':
      case '5': case '6': case '7': case '8': case '9':
        while (isDecDigit(input.charCodeAt(index)) && index - sequenceStart < 3) ++index;

        var frag = input.slice(sequenceStart, index);
        var ddd = parseInt(frag, 10);
        if (ddd > 255) {
          raise(null, errors.decimalEscapeTooLarge, '\\' + ddd);
        }
        return encodingMode.encodeByte(ddd, '\\' + frag);

      case 'z':
        if (features.skipWhitespaceEscape) {
          ++index;
          skipWhiteSpace();
          return '';
        }
        break;

      case 'x':
        if (features.hexEscapes) {
          if (isHexDigit(input.charCodeAt(index + 1)) &&
              isHexDigit(input.charCodeAt(index + 2))) {
            index += 3;
            return encodingMode.encodeByte(parseInt(input.slice(sequenceStart + 1, index), 16), '\\' + input.slice(sequenceStart, index));
          }
          raise(null, errors.hexadecimalDigitExpected, '\\' + input.slice(sequenceStart, index + 2));
        }
        break;

      case 'u':
        if (features.unicodeEscapes)
          return readUnicodeEscapeSequence();
        break;

      case '\\': case '"': case "'":
        return input.charAt(index++);
    }

    if (features.strictEscapes)
      raise(null, errors.invalidEscape, '\\' + input.slice(sequenceStart, index + 1));
    return input.charAt(index++);
  }

  function scanComment() {
    tokenStart = index;
    index += 2; // --

    var character = input.charAt(index)
      , content = ''
      , isLong = false
      , commentStart = index
      , lineStartComment = lineStart
      , lineComment = line;

    if ('[' === character) {
      content = readLongString(true);
      if (false === content) content = character;
      else isLong = true;
    }
    if (!isLong) {
      while (index < length) {
        if (isLineTerminator(input.charCodeAt(index))) break;
        ++index;
      }
      if (options.comments) content = input.slice(commentStart, index);
    }

    if (options.comments) {
      var node = ast.comment(content, input.slice(tokenStart, index));
      if (options.locations) {
        node.loc = {
            start: { line: lineComment, column: tokenStart - lineStartComment }
          , end: { line: line, column: index - lineStart }
        };
      }
      if (options.ranges) {
        node.range = [tokenStart, index];
      }
      if (options.onCreateNode) options.onCreateNode(node);
      comments.push(node);
    }
  }

  function readLongString(isComment) {
    var level = 0
      , content = ''
      , terminator = false
      , character, stringStart, firstLine = line;

    ++index; // [
    while ('=' === input.charAt(index + level)) ++level;
    if ('[' !== input.charAt(index + level)) return false;

    index += level + 1;
    if (isLineTerminator(input.charCodeAt(index))) consumeEOL();

    stringStart = index;
    while (index < length) {
      while (isLineTerminator(input.charCodeAt(index))) consumeEOL();

      character = input.charAt(index++);
      if (']' === character) {
        terminator = true;
        for (var i = 0; i < level; ++i) {
          if ('=' !== input.charAt(index + i)) terminator = false;
        }
        if (']' !== input.charAt(index + level)) terminator = false;
      }
      if (terminator) {
        content += input.slice(stringStart, index - 1);
        index += level + 1;
        return content;
      }
    }

    raise(null, isComment ?
                errors.unfinishedLongComment :
                errors.unfinishedLongString,
          firstLine, '<eof>');
  }

  function next() {
    previousToken = token;
    token = lookahead;
    lookahead = lex();
  }

  function consume(value) {
    if (value === token.value) {
      next();
      return true;
    }
    return false;
  }

  function expect(value) {
    if (value === token.value) next();
    else raise(token, errors.expected, value, tokenValue(token));
  }

  function isWhiteSpace(charCode) {
    return 9 === charCode || 32 === charCode || 0xB === charCode || 0xC === charCode;
  }

  function isLineTerminator(charCode) {
    return 10 === charCode || 13 === charCode;
  }

  function isDecDigit(charCode) {
    return charCode >= 48 && charCode <= 57;
  }

  function isHexDigit(charCode) {
    return (charCode >= 48 && charCode <= 57) || (charCode >= 97 && charCode <= 102) || (charCode >= 65 && charCode <= 70);
  }

  function isIdentifierStart(charCode) {
    if ((charCode >= 65 && charCode <= 90) || (charCode >= 97 && charCode <= 122) || 95 === charCode)
      return true;
    if (features.extendedIdentifiers && charCode >= 128)
      return true;
    return false;
  }

  function isIdentifierPart(charCode) {
    if ((charCode >= 65 && charCode <= 90) || (charCode >= 97 && charCode <= 122) || 95 === charCode || (charCode >= 48 && charCode <= 57))
      return true;
    if (features.extendedIdentifiers && charCode >= 128)
      return true;
    return false;
  }

  function isKeyword(id) {
    switch (id.length) {
      case 2:
        return 'do' === id || 'if' === id || 'in' === id || 'or' === id;
      case 3:
        return 'and' === id || 'end' === id || 'for' === id || 'not' === id;
      case 4:
        if ('else' === id || 'then' === id)
          return true;
        if (features.labels && !features.contextualGoto)
          return ('goto' === id);
        return false;
      case 5:
        return 'break' === id || 'local' === id || 'until' === id || 'while' === id;
      case 6:
        return 'elseif' === id || 'repeat' === id || 'return' === id;
      case 8:
        return 'function' === id;
    }
    return false;
  }

  function isUnary(token) {
    if (Punctuator === token.type) return '#-~'.indexOf(token.value) >= 0;
    if (Keyword === token.type) return 'not' === token.value;
    return false;
  }

  function isBlockFollow(token) {
    if (EOF === token.type) return true;
    if (Keyword !== token.type) return false;
    switch (token.value) {
      case 'else': case 'elseif':
      case 'end': case 'until':
        return true;
      default:
        return false;
    }
  }
  var scopes
    , scopeDepth
    , globals;
  function createScope() {
    var scope = scopes[scopeDepth++].slice();
    scopes.push(scope);
    if (options.onCreateScope) options.onCreateScope();
  }
  function destroyScope() {
    var scope = scopes.pop();
    --scopeDepth;
    if (options.onDestroyScope) options.onDestroyScope();
  }
  function scopeIdentifierName(name) {
    if (options.onLocalDeclaration) options.onLocalDeclaration(name);
    if (-1 !== indexOf(scopes[scopeDepth], name)) return;
    scopes[scopeDepth].push(name);
  }
  function scopeIdentifier(node) {
    scopeIdentifierName(node.name);
    attachScope(node, true);
  }
  function attachScope(node, isLocal) {
    if (!isLocal && -1 === indexOfObject(globals, 'name', node.name))
      globals.push(node);

    node.isLocal = isLocal;
  }
  function scopeHasName(name) {
    return (-1 !== indexOf(scopes[scopeDepth], name));
  }

  var locations = []
    , trackLocations;

  function createLocationMarker() {
    return new Marker(token);
  }

  function Marker(token) {
    if (options.locations) {
      this.loc = {
          start: {
            line: token.line
          , column: token.range[0] - token.lineStart
        }
        , end: {
            line: 0
          , column: 0
        }
      };
    }
    if (options.ranges) this.range = [token.range[0], 0];
  }
  Marker.prototype.complete = function() {
    if (options.locations) {
      this.loc.end.line = previousToken.lastLine || previousToken.line;
      this.loc.end.column = previousToken.range[1] - (previousToken.lastLineStart || previousToken.lineStart);
    }
    if (options.ranges) {
      this.range[1] = previousToken.range[1];
    }
  };

  Marker.prototype.bless = function (node) {
    if (this.loc) {
      var loc = this.loc;
      node.loc = {
        start: {
          line: loc.start.line,
          column: loc.start.column
        },
        end: {
          line: loc.end.line,
          column: loc.end.column
        }
      };
    }
    if (this.range) {
      node.range = [
        this.range[0],
        this.range[1]
      ];
    }
  };
  function markLocation() {
    if (trackLocations) locations.push(createLocationMarker());
  }
  function pushLocation(marker) {
    if (trackLocations) locations.push(marker);
  }

  function FullFlowContext() {
    this.scopes = [];
    this.pendingGotos = [];
  }

  FullFlowContext.prototype.isInLoop = function () {
    var i = this.scopes.length;
    while (i --> 0) {
      if (this.scopes[i].isLoop)
        return true;
    }
    return false;
  };

  FullFlowContext.prototype.pushScope = function (isLoop) {
    var scope = {
      labels: {},
      locals: [],
      deferredGotos: [],
      isLoop: !!isLoop
    };
    this.scopes.push(scope);
  };

  FullFlowContext.prototype.popScope = function () {
    for (var i = 0; i < this.pendingGotos.length; ++i) {
      var theGoto = this.pendingGotos[i];
      if (theGoto.maxDepth >= this.scopes.length)
        if (--theGoto.maxDepth <= 0)
          raise(theGoto.token, errors.labelNotVisible, theGoto.target);
    }

    this.scopes.pop();
  };

  FullFlowContext.prototype.addGoto = function (target, token) {
    var localCounts = [];

    for (var i = 0; i < this.scopes.length; ++i) {
      var scope = this.scopes[i];
      localCounts.push(scope.locals.length);
      if (Object.prototype.hasOwnProperty.call(scope.labels, target))
        return;
    }

    this.pendingGotos.push({
      maxDepth: this.scopes.length,
      target: target,
      token: token,
      localCounts: localCounts
    });
  };

  FullFlowContext.prototype.addLabel = function (name, token) {
    var scope = this.currentScope();

    if (Object.prototype.hasOwnProperty.call(scope.labels, name)) {
      raise(token, errors.labelAlreadyDefined, name, scope.labels[name].line);
    } else {
      var newGotos = [];

      for (var i = 0; i < this.pendingGotos.length; ++i) {
        var theGoto = this.pendingGotos[i];

        if (theGoto.maxDepth >= this.scopes.length && theGoto.target === name) {
          if (theGoto.localCounts[this.scopes.length - 1] < scope.locals.length) {
            scope.deferredGotos.push(theGoto);
          }
          continue;
        }

        newGotos.push(theGoto);
      }

      this.pendingGotos = newGotos;
    }

    scope.labels[name] = {
      localCount: scope.locals.length,
      line: token.line
    };
  };

  FullFlowContext.prototype.addLocal = function (name, token) {
    this.currentScope().locals.push({
      name: name,
      token: token
    });
  };

  FullFlowContext.prototype.currentScope = function () {
    return this.scopes[this.scopes.length - 1];
  };

  FullFlowContext.prototype.raiseDeferredErrors = function () {
    var scope = this.currentScope();
    var bads = scope.deferredGotos;
    for (var i = 0; i < bads.length; ++i) {
      var theGoto = bads[i];
      raise(theGoto.token, errors.gotoJumpInLocalScope, theGoto.target, scope.locals[theGoto.localCounts[this.scopes.length - 1]].name);
    }
  };

  function LoopFlowContext() {
    this.level = 0;
    this.loopLevels = [];
  }

  LoopFlowContext.prototype.isInLoop = function () {
    return !!this.loopLevels.length;
  };

  LoopFlowContext.prototype.pushScope = function (isLoop) {
    ++this.level;
    if (isLoop)
      this.loopLevels.push(this.level);
  };

  LoopFlowContext.prototype.popScope = function () {
    var levels = this.loopLevels;
    var levlen = levels.length;
    if (levlen) {
      if (levels[levlen - 1] === this.level)
        levels.pop();
    }
    --this.level;
  };

  LoopFlowContext.prototype.addGoto =
  LoopFlowContext.prototype.addLabel =
  function () { throw new Error('This should never happen'); };

  LoopFlowContext.prototype.addLocal =
  LoopFlowContext.prototype.raiseDeferredErrors =
  function () {};

  function makeFlowContext() {
    return features.labels ? new FullFlowContext() : new LoopFlowContext();
  }

  function parseChunk() {
    next();
    markLocation();
    if (options.scope) createScope();
    var flowContext = makeFlowContext();
    flowContext.allowVararg = true;
    flowContext.pushScope();
    var body = parseBlock(flowContext);
    flowContext.popScope();
    if (options.scope) destroyScope();
    if (EOF !== token.type) unexpected(token);
    if (trackLocations && !body.length) previousToken = token;
    return finishNode(ast.chunk(body));
  }

  function parseBlock(flowContext) {
    var block = []
      , statement;

    while (!isBlockFollow(token)) {
      if ('return' === token.value || (!features.relaxedBreak && 'break' === token.value)) {
        block.push(parseStatement(flowContext));
        break;
      }
      statement = parseStatement(flowContext);
      consume(';');
      if (statement) block.push(statement);
    }
    return block;
  }

  function parseStatement(flowContext) {
    markLocation();

    if (Punctuator === token.type) {
      if (consume('::')) return parseLabelStatement(flowContext);
    }
    if (features.emptyStatement) {
      if (consume(';')) {
        if (trackLocations) locations.pop();
        return;
      }
    }

    flowContext.raiseDeferredErrors();

    if (Keyword === token.type) {
      switch (token.value) {
        case 'local':    next(); return parseLocalStatement(flowContext);
        case 'if':       next(); return parseIfStatement(flowContext);
        case 'return':   next(); return parseReturnStatement(flowContext);
        case 'function': next();
          var name = parseFunctionName();
          return parseFunctionDeclaration(name);
        case 'while':    next(); return parseWhileStatement(flowContext);
        case 'for':      next(); return parseForStatement(flowContext);
        case 'repeat':   next(); return parseRepeatStatement(flowContext);
        case 'break':    next();
          if (!flowContext.isInLoop())
            raise(token, errors.noLoopToBreak, token.value);
          return parseBreakStatement();
        case 'do':       next(); return parseDoStatement(flowContext);
        case 'goto':     next(); return parseGotoStatement(flowContext);
      }
    }

    if (features.contextualGoto &&
        token.type === Identifier && token.value === 'goto' &&
        lookahead.type === Identifier && lookahead.value !== 'goto') {
      next(); return parseGotoStatement(flowContext);
    }
    if (trackLocations) locations.pop();

    return parseAssignmentOrCallStatement(flowContext);
  }

  function parseLabelStatement(flowContext) {
    var nameToken = token
      , label = parseIdentifier();

    if (options.scope) {
      scopeIdentifierName('::' + nameToken.value + '::');
      attachScope(label, true);
    }

    expect('::');

    flowContext.addLabel(nameToken.value, nameToken);
    return finishNode(ast.labelStatement(label));
  }

  function parseBreakStatement() {
    return finishNode(ast.breakStatement());
  }

  function parseGotoStatement(flowContext) {
    var name = token.value
      , gotoToken = previousToken
      , label = parseIdentifier();

    flowContext.addGoto(name, gotoToken);
    return finishNode(ast.gotoStatement(label));
  }

  function parseDoStatement(flowContext) {
    if (options.scope) createScope();
    flowContext.pushScope();
    var body = parseBlock(flowContext);
    flowContext.popScope();
    if (options.scope) destroyScope();
    expect('end');
    return finishNode(ast.doStatement(body));
  }

  function parseWhileStatement(flowContext) {
    var condition = parseExpectedExpression(flowContext);
    expect('do');
    if (options.scope) createScope();
    flowContext.pushScope(true);
    var body = parseBlock(flowContext);
    flowContext.popScope();
    if (options.scope) destroyScope();
    expect('end');
    return finishNode(ast.whileStatement(condition, body));
  }

  function parseRepeatStatement(flowContext) {
    if (options.scope) createScope();
    flowContext.pushScope(true);
    var body = parseBlock(flowContext);
    expect('until');
    flowContext.raiseDeferredErrors();
    var condition = parseExpectedExpression(flowContext);
    flowContext.popScope();
    if (options.scope) destroyScope();
    return finishNode(ast.repeatStatement(condition, body));
  }

  function parseReturnStatement(flowContext) {
    var expressions = [];

    if ('end' !== token.value) {
      var expression = parseExpression(flowContext);
      if (null != expression) expressions.push(expression);
      while (consume(',')) {
        expression = parseExpectedExpression(flowContext);
        expressions.push(expression);
      }
      consume(';'); // grammar tells us ; is optional here.
    }
    return finishNode(ast.returnStatement(expressions));
  }

  function parseIfStatement(flowContext) {
    var clauses = []
      , condition
      , body
      , marker;
    if (trackLocations) {
      marker = locations[locations.length - 1];
      locations.push(marker);
    }
    condition = parseExpectedExpression(flowContext);
    expect('then');
    if (options.scope) createScope();
    flowContext.pushScope();
    body = parseBlock(flowContext);
    flowContext.popScope();
    if (options.scope) destroyScope();
    clauses.push(finishNode(ast.ifClause(condition, body)));

    if (trackLocations) marker = createLocationMarker();
    while (consume('elseif')) {
      pushLocation(marker);
      condition = parseExpectedExpression(flowContext);
      expect('then');
      if (options.scope) createScope();
      flowContext.pushScope();
      body = parseBlock(flowContext);
      flowContext.popScope();
      if (options.scope) destroyScope();
      clauses.push(finishNode(ast.elseifClause(condition, body)));
      if (trackLocations) marker = createLocationMarker();
    }

    if (consume('else')) {
      if (trackLocations) {
        marker = new Marker(previousToken);
        locations.push(marker);
      }
      if (options.scope) createScope();
      flowContext.pushScope();
      body = parseBlock(flowContext);
      flowContext.popScope();
      if (options.scope) destroyScope();
      clauses.push(finishNode(ast.elseClause(body)));
    }

    expect('end');
    return finishNode(ast.ifStatement(clauses));
  }

  function parseForStatement(flowContext) {
    var variable = parseIdentifier()
      , body;

    if (options.scope) {
      createScope();
      scopeIdentifier(variable);
    }
    if (consume('=')) {
      var start = parseExpectedExpression(flowContext);
      expect(',');
      var end = parseExpectedExpression(flowContext);
      var step = consume(',') ? parseExpectedExpression(flowContext) : null;

      expect('do');
      flowContext.pushScope(true);
      body = parseBlock(flowContext);
      flowContext.popScope();
      expect('end');
      if (options.scope) destroyScope();

      return finishNode(ast.forNumericStatement(variable, start, end, step, body));
    }
    else {
      var variables = [variable];
      while (consume(',')) {
        variable = parseIdentifier();
        if (options.scope) scopeIdentifier(variable);
        variables.push(variable);
      }
      expect('in');
      var iterators = [];
      do {
        var expression = parseExpectedExpression(flowContext);
        iterators.push(expression);
      } while (consume(','));

      expect('do');
      flowContext.pushScope(true);
      body = parseBlock(flowContext);
      flowContext.popScope();
      expect('end');
      if (options.scope) destroyScope();

      return finishNode(ast.forGenericStatement(variables, iterators, body));
    }
  }

  function parseLocalStatement(flowContext) {
    var name
      , declToken = previousToken;

    if (Identifier === token.type) {
      var variables = []
        , init = [];

      do {
        name = parseIdentifier();

        variables.push(name);
        flowContext.addLocal(name.name, declToken);
      } while (consume(','));

      if (consume('=')) {
        do {
          var expression = parseExpectedExpression(flowContext);
          init.push(expression);
        } while (consume(','));
      }
      if (options.scope) {
        for (var i = 0, l = variables.length; i < l; ++i) {
          scopeIdentifier(variables[i]);
        }
      }

      return finishNode(ast.localStatement(variables, init));
    }
    if (consume('function')) {
      name = parseIdentifier();
      flowContext.addLocal(name.name, declToken);

      if (options.scope) {
        scopeIdentifier(name);
        createScope();
      }
      return parseFunctionDeclaration(name, true);
    } else {
      raiseUnexpectedToken('<name>', token);
    }
  }

  function parseAssignmentOrCallStatement(flowContext) {
    var previous = token
      , marker, startMarker;
    var lvalue, base, name;

    var targets = [];

    if (trackLocations) startMarker = createLocationMarker();

    do {
      if (trackLocations) marker = createLocationMarker();

      if (Identifier === token.type) {
        name = token.value;
        base = parseIdentifier();
        if (options.scope) attachScope(base, scopeHasName(name));
        lvalue = true;
      } else if ('(' === token.value) {
        next();
        base = parseExpectedExpression(flowContext);
        expect(')');
        lvalue = false;
      } else {
        return unexpected(token);
      }

      both: for (;;) {
        var newBase;

        switch (StringLiteral === token.type ? '"' : token.value) {
        case '.':
        case '[':
          lvalue = true;
          break;
        case ':':
        case '(':
        case '{':
        case '"':
          lvalue = null;
          break;
        default:
          break both;
        }

        base = parsePrefixExpressionPart(base, marker, flowContext);
      }

      targets.push(base);

      if (',' !== token.value)
        break;

      if (!lvalue) {
        return unexpected(token);
      }

      next();
    } while (true);

    if (targets.length === 1 && lvalue === null) {
      pushLocation(marker);
      return finishNode(ast.callStatement(targets[0]));
    } else if (!lvalue) {
      return unexpected(token);
    }

    expect('=');

    var values = [];

    do {
      values.push(parseExpectedExpression(flowContext));
    } while (consume(','));

    pushLocation(startMarker);
    return finishNode(ast.assignmentStatement(targets, values));
  }

  function parseIdentifier() {
    markLocation();
    var identifier = token.value;
    if (Identifier !== token.type) raiseUnexpectedToken('<name>', token);
    next();
    return finishNode(ast.identifier(identifier));
  }

  function parseFunctionDeclaration(name, isLocal) {
    var flowContext = makeFlowContext();
    flowContext.pushScope();

    var parameters = [];
    expect('(');
    if (!consume(')')) {
      while (true) {
        if (Identifier === token.type) {
          var parameter = parseIdentifier();
          if (options.scope) scopeIdentifier(parameter);

          parameters.push(parameter);

          if (consume(',')) continue;
        }
        else if (VarargLiteral === token.type) {
          flowContext.allowVararg = true;
          parameters.push(parsePrimaryExpression(flowContext));
        } else {
          raiseUnexpectedToken('<name> or \'...\'', token);
        }
        expect(')');
        break;
      }
    }

    var body = parseBlock(flowContext);
    flowContext.popScope();
    expect('end');
    if (options.scope) destroyScope();

    isLocal = isLocal || false;
    return finishNode(ast.functionStatement(name, parameters, isLocal, body));
  }

  function parseFunctionName() {
    var base, name, marker;

    if (trackLocations) marker = createLocationMarker();
    base = parseIdentifier();

    if (options.scope) {
      attachScope(base, scopeHasName(base.name));
      createScope();
    }

    while (consume('.')) {
      pushLocation(marker);
      name = parseIdentifier();
      base = finishNode(ast.memberExpression(base, '.', name));
    }

    if (consume(':')) {
      pushLocation(marker);
      name = parseIdentifier();
      base = finishNode(ast.memberExpression(base, ':', name));
      if (options.scope) scopeIdentifierName('self');
    }

    return base;
  }

  function parseTableConstructor(flowContext) {
    var fields = []
      , key, value;

    while (true) {
      markLocation();
      if (Punctuator === token.type && consume('[')) {
        key = parseExpectedExpression(flowContext);
        expect(']');
        expect('=');
        value = parseExpectedExpression(flowContext);
        fields.push(finishNode(ast.tableKey(key, value)));
      } else if (Identifier === token.type) {
        if ('=' === lookahead.value) {
          key = parseIdentifier();
          next();
          value = parseExpectedExpression(flowContext);
          fields.push(finishNode(ast.tableKeyString(key, value)));
        } else {
          value = parseExpectedExpression(flowContext);
          fields.push(finishNode(ast.tableValue(value)));
        }
      } else {
        if (null == (value = parseExpression(flowContext))) {
          locations.pop();
          break;
        }
        fields.push(finishNode(ast.tableValue(value)));
      }
      if (',;'.indexOf(token.value) >= 0) {
        next();
        continue;
      }
      break;
    }
    expect('}');
    return finishNode(ast.tableConstructorExpression(fields));
  }

  function parseExpression(flowContext) {
    var expression = parseSubExpression(0, flowContext);
    return expression;
  }

  function parseExpectedExpression(flowContext) {
    var expression = parseExpression(flowContext);
    if (null == expression) raiseUnexpectedToken('<expression>', token);
    else return expression;
  }

  function binaryPrecedence(operator) {
    var charCode = operator.charCodeAt(0)
      , length = operator.length;

    if (1 === length) {
      switch (charCode) {
        case 94: return 12; // ^
        case 42: case 47: case 37: return 10; // * / %
        case 43: case 45: return 9; // + -
        case 38: return 6; // &
        case 126: return 5; // ~
        case 124: return 4; // |
        case 60: case 62: return 3; // < >
      }
    } else if (2 === length) {
      switch (charCode) {
        case 47: return 10; // //
        case 46: return 8; // ..
        case 60: case 62:
            if('<<' === operator || '>>' === operator) return 7; // << >>
            return 3; // <= >=
        case 61: case 126: return 3; // == ~=
        case 111: return 1; // or
      }
    } else if (97 === charCode && 'and' === operator) return 2;
    return 0;
  }

  function parseSubExpression(minPrecedence, flowContext) {
    var operator = token.value
      , expression, marker;

    if (trackLocations) marker = createLocationMarker();
    if (isUnary(token)) {
      markLocation();
      next();
      var argument = parseSubExpression(10, flowContext);
      if (argument == null) raiseUnexpectedToken('<expression>', token);
      expression = finishNode(ast.unaryExpression(operator, argument));
    }
    if (null == expression) {
      expression = parsePrimaryExpression(flowContext);
      if (null == expression) {
        expression = parsePrefixExpression(flowContext);
      }
    }
    if (null == expression) return null;

    var precedence;
    while (true) {
      operator = token.value;

      precedence = (Punctuator === token.type || Keyword === token.type) ?
        binaryPrecedence(operator) : 0;

      if (precedence === 0 || precedence <= minPrecedence) break;
      if ('^' === operator || '..' === operator) --precedence;
      next();
      var right = parseSubExpression(precedence, flowContext);
      if (null == right) raiseUnexpectedToken('<expression>', token);
      if (trackLocations) locations.push(marker);
      expression = finishNode(ast.binaryExpression(operator, expression, right));

    }
    return expression;
  }

  function parsePrefixExpressionPart(base, marker, flowContext) {
    var expression, identifier;

    if (Punctuator === token.type) {
      switch (token.value) {
        case '[':
          pushLocation(marker);
          next();
          expression = parseExpectedExpression(flowContext);
          expect(']');
          return finishNode(ast.indexExpression(base, expression));
        case '.':
          pushLocation(marker);
          next();
          identifier = parseIdentifier();
          return finishNode(ast.memberExpression(base, '.', identifier));
        case ':':
          pushLocation(marker);
          next();
          identifier = parseIdentifier();
          base = finishNode(ast.memberExpression(base, ':', identifier));
          pushLocation(marker);
          return parseCallExpression(base, flowContext);
        case '(': case '{': // args
          pushLocation(marker);
          return parseCallExpression(base, flowContext);
      }
    } else if (StringLiteral === token.type) {
      pushLocation(marker);
      return parseCallExpression(base, flowContext);
    }

    return null;
  }

  function parsePrefixExpression(flowContext) {
    var base, name, marker;

    if (trackLocations) marker = createLocationMarker();
    if (Identifier === token.type) {
      name = token.value;
      base = parseIdentifier();
      if (options.scope) attachScope(base, scopeHasName(name));
    } else if (consume('(')) {
      base = parseExpectedExpression(flowContext);
      expect(')');
    } else {
      return null;
    }
    for (;;) {
      var newBase = parsePrefixExpressionPart(base, marker, flowContext);
      if (newBase === null)
        break;
      base = newBase;
    }

    return base;
  }

  function parseCallExpression(base, flowContext) {
    if (Punctuator === token.type) {
      switch (token.value) {
        case '(':
          if (!features.emptyStatement) {
            if (token.line !== previousToken.line)
              raise(null, errors.ambiguousSyntax, token.value);
          }
          next();
          var expressions = [];
          var expression = parseExpression(flowContext);
          if (null != expression) expressions.push(expression);
          while (consume(',')) {
            expression = parseExpectedExpression(flowContext);
            expressions.push(expression);
          }

          expect(')');
          return finishNode(ast.callExpression(base, expressions));

        case '{':
          markLocation();
          next();
          var table = parseTableConstructor(flowContext);
          return finishNode(ast.tableCallExpression(base, table));
      }
    } else if (StringLiteral === token.type) {
      return finishNode(ast.stringCallExpression(base, parsePrimaryExpression(flowContext)));
    }

    raiseUnexpectedToken('function arguments', token);
  }

  function parsePrimaryExpression(flowContext) {
    var literals = StringLiteral | NumericLiteral | BooleanLiteral | NilLiteral | VarargLiteral
      , value = token.value
      , type = token.type
      , marker;

    if (trackLocations) marker = createLocationMarker();

    if (type === VarargLiteral && !flowContext.allowVararg) {
      raise(token, errors.cannotUseVararg, token.value);
    }

    if (type & literals) {
      pushLocation(marker);
      var raw = input.slice(token.range[0], token.range[1]);
      next();
      return finishNode(ast.literal(type, value, raw));
    } else if (Keyword === type && 'function' === value) {
      pushLocation(marker);
      next();
      if (options.scope) createScope();
      return parseFunctionDeclaration(null);
    } else if (consume('{')) {
      pushLocation(marker);
      return parseTableConstructor(flowContext);
    }
  }

  exports.parse = parse;

  var versionFeatures = {
    '5.1': {
    },
    '5.2': {
      labels: true,
      emptyStatement: true,
      hexEscapes: true,
      skipWhitespaceEscape: true,
      strictEscapes: true,
      relaxedBreak: true
    },
    '5.3': {
      labels: true,
      emptyStatement: true,
      hexEscapes: true,
      skipWhitespaceEscape: true,
      strictEscapes: true,
      unicodeEscapes: true,
      bitwiseOperators: true,
      integerDivision: true,
      relaxedBreak: true
    },
    'LuaJIT': {
      labels: true,
      contextualGoto: true,
      hexEscapes: true,
      skipWhitespaceEscape: true,
      strictEscapes: true,
      unicodeEscapes: true,
      imaginaryNumbers: true,
      integerSuffixes: true
    }
  };

  function parse(_input, _options) {
    if ('undefined' === typeof _options && 'object' === typeof _input) {
      _options = _input;
      _input = undefined;
    }
    if (!_options) _options = {};

    input = _input || '';
    options = assign({}, defaultOptions, _options);
    index = 0;
    line = 1;
    lineStart = 0;
    length = input.length;
    scopes = [[]];
    scopeDepth = 0;
    globals = [];
    locations = [];

    if (!Object.prototype.hasOwnProperty.call(versionFeatures, options.luaVersion)) {
      throw new Error(sprintf("Lua version '%1' not supported", options.luaVersion));
    }

    features = assign({}, versionFeatures[options.luaVersion]);
    if (options.extendedIdentifiers !== void 0)
      features.extendedIdentifiers = !!options.extendedIdentifiers;

    if (!Object.prototype.hasOwnProperty.call(encodingModes, options.encodingMode)) {
      throw new Error(sprintf("Encoding mode '%1' not supported", options.encodingMode));
    }

    encodingMode = encodingModes[options.encodingMode];

    if (options.comments) comments = [];
    if (!options.wait) return end();
    return exports;
  }
  exports.write = write;

  function write(_input) {
    input += String(_input);
    length = input.length;
    return exports;
  }
  exports.end = end;

  function end(_input) {
    if ('undefined' !== typeof _input) write(_input);
    if (input && input.substr(0, 2) === '#!') input = input.replace(/^.*/, function (line) {
      return line.replace(/./g, ' ');
    });

    length = input.length;
    trackLocations = options.locations || options.ranges;
    lookahead = lex();

    var chunk = parseChunk();
    if (options.comments) chunk.comments = comments;
    if (options.scope) chunk.globals = globals;
    if (locations.length > 0)
      throw new Error('Location tracking failed. This is most likely a bug in luaparse');

    return chunk;
  }

}));

});

define("ace/mode/lua_worker",[], function(require, exports, module) {
"use strict";

var oop = require("../lib/oop");
var Mirror = require("../worker/mirror").Mirror;
var luaparse = require("../mode/lua/luaparse");

var Worker = exports.Worker = function(sender) {
    Mirror.call(this, sender);
    this.setTimeout(500);
};

oop.inherits(Worker, Mirror);

(function() {

    this.onUpdate = function() {
        var value = this.doc.getValue();
        var errors = [];
        try {
            luaparse.parse(value);
        } catch(e) {
            if (e instanceof luaparse.SyntaxError) {
                errors.push({
                    row: e.line - 1,
                    column: e.column,
                    text: e.message,
                    type: "error"
                });
            }
        }
        this.sender.emit("annotate", errors);
    };

}).call(Worker.prototype);

});
