stackframe.js

(function(root, factory) {
    'use strict';
    // Universal Module Definition (UMD) to support AMD, CommonJS/Node.js, Rhino, and browsers.

    /* istanbul ignore next */
    if (typeof define === 'function' && define.amd) {
        define('stackframe', [], factory);
    } else if (typeof exports === 'object') {
        module.exports = factory();
    } else {
        root.StackFrame = factory();
    }
}(this, function() {
    'use strict';
    function _isNumber(n) {
        return !isNaN(parseFloat(n)) && isFinite(n);
    }

    function _capitalize(str) {
        return str.charAt(0).toUpperCase() + str.substring(1);
    }

    function _getter(p) {
        return function() {
            return this[p];
        };
    }

    var booleanProps = ['isConstructor', 'isEval', 'isNative', 'isToplevel'];
    var numericProps = ['columnNumber', 'lineNumber'];
    var stringProps = ['fileName', 'functionName', 'source'];
    var arrayProps = ['args'];
    var objectProps = ['evalOrigin'];

    var props = booleanProps.concat(numericProps, stringProps, arrayProps, objectProps);

    function StackFrame(obj) {
        if (!obj) return;
        for (var i = 0; i < props.length; i++) {
            if (obj[props[i]] !== undefined) {
                this['set' + _capitalize(props[i])](obj[props[i]]);
            }
        }
    }

    StackFrame.prototype = {
        getArgs: function() {
            return this.args;
        },
        setArgs: function(v) {
            if (Object.prototype.toString.call(v) !== '[object Array]') {
                throw new TypeError('Args must be an Array');
            }
            this.args = v;
        },

        getEvalOrigin: function() {
            return this.evalOrigin;
        },
        setEvalOrigin: function(v) {
            if (v instanceof StackFrame) {
                this.evalOrigin = v;
            } else if (v instanceof Object) {
                this.evalOrigin = new StackFrame(v);
            } else {
                throw new TypeError('Eval Origin must be an Object or StackFrame');
            }
        },

        toString: function() {
            var fileName = this.getFileName() || '';
            var lineNumber = this.getLineNumber() || '';
            var columnNumber = this.getColumnNumber() || '';
            var functionName = this.getFunctionName() || '';
            if (this.getIsEval()) {
                if (fileName) {
                    return '[eval] (' + fileName + ':' + lineNumber + ':' + columnNumber + ')';
                }
                return '[eval]:' + lineNumber + ':' + columnNumber;
            }
            if (functionName) {
                return functionName + ' (' + fileName + ':' + lineNumber + ':' + columnNumber + ')';
            }
            return fileName + ':' + lineNumber + ':' + columnNumber;
        }
    };

    StackFrame.fromString = function StackFrame$$fromString(str) {
        var argsStartIndex = str.indexOf('(');
        var argsEndIndex = str.lastIndexOf(')');

        var functionName = str.substring(0, argsStartIndex);
        var args = str.substring(argsStartIndex + 1, argsEndIndex).split(',');
        var locationString = str.substring(argsEndIndex + 1);

        if (locationString.indexOf('@') === 0) {
            var parts = /@(.+?)(?::(\d+))?(?::(\d+))?$/.exec(locationString, '');
            var fileName = parts[1];
            var lineNumber = parts[2];
            var columnNumber = parts[3];
        }

        return new StackFrame({
            functionName: functionName,
            args: args || undefined,
            fileName: fileName,
            lineNumber: lineNumber || undefined,
            columnNumber: columnNumber || undefined
        });
    };

    for (var i = 0; i < booleanProps.length; i++) {
        StackFrame.prototype['get' + _capitalize(booleanProps[i])] = _getter(booleanProps[i]);
        StackFrame.prototype['set' + _capitalize(booleanProps[i])] = (function(p) {
            return function(v) {
                this[p] = Boolean(v);
            };
        })(booleanProps[i]);
    }

    for (var j = 0; j < numericProps.length; j++) {
        StackFrame.prototype['get' + _capitalize(numericProps[j])] = _getter(numericProps[j]);
        StackFrame.prototype['set' + _capitalize(numericProps[j])] = (function(p) {
            return function(v) {
                if (!_isNumber(v)) {
                    throw new TypeError(p + ' must be a Number');
                }
                this[p] = Number(v);
            };
        })(numericProps[j]);
    }

    for (var k = 0; k < stringProps.length; k++) {
        StackFrame.prototype['get' + _capitalize(stringProps[k])] = _getter(stringProps[k]);
        StackFrame.prototype['set' + _capitalize(stringProps[k])] = (function(p) {
            return function(v) {
                this[p] = String(v);
            };
        })(stringProps[k]);
    }

    return StackFrame;
}));