91 lines
1.8 KiB
JavaScript
91 lines
1.8 KiB
JavaScript
/**
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* @class
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* @constructor
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*/
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var StackItem = function() {
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this.what = '[unknown]';
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this.file = '[unknown]';
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this.line = '[unknown]';
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this.column = '[unknown]';
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};
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/**
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* Supported placeholders are:
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* %what or %w
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* %file or %f
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* %line or %l
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* %column or %c
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*
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* Default format (when undefined or empty) is "%w, file: %f, line: %l, column: %c".
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*
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* @param {String} format
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*/
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StackItem.prototype.format = function(format) {
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if (!format)
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return this.what + ', file: ' + this.file + ', line: ' + this.line + ', column: ' + this.column;
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var replacements = [
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[ /%what|%w/ig, this.what ],
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[ /%file|%f/ig, this.file ],
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[ /%line|%l/ig, this.line ],
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[ /%column|%c/ig, this.column ]
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];
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replacements.forEach(function(replacement) {
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format = format.replace(replacement[0], replacement[1]);
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});
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return format;
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};
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/**
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* @param {String} stack
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* @return {Array} of StackItem
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*/
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var parse = function(stack) {
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var items = [];
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var lines = stack.match(/^\s+at.*$/mg);
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lines.forEach(function(line) {
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line = line.replace(/^\s*at\s*/, '');
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var m = line.match(/^(.*?)\s+\(([^)]+):(\d+):(\d+)\)$/);
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if (!m) {
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m = line.match(/^(.*?):(\d+):(\d+)$/);
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if (m)
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m.splice(1, 0, null);
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}
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var item = new StackItem();
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if (m) {
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// m: [ match, what, file, line, column ]
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item.what = m[1];
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item.file = m[2];
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item.line = m[3];
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item.column = m[4];
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items.push(item);
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} else {
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item.what = line;
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items.push(item);
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}
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});
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return items;
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};
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/**
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* Returns the current stack (taken from where here() is called).
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*
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* @return {Array} of StackItem
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*/
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var here = function() {
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var items = parse((new Error()).stack);
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items.shift();
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return items;
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};
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module.exports.parse = parse;
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module.exports.here = here;
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