зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
1.6 KiB
JavaScript
67 строки
1.6 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// A few wrappers for stack-manipulation. This version of the module
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// is used in chrome code.
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"use strict";
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const { Cu, components } = require("chrome");
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/**
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* Return the Nth path from the stack excluding substr.
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*
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* @param {Number}
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* n the Nth path from the stack to describe.
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* @param {String} substr
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* A segment of the path that should be excluded.
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*/
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function getNthPathExcluding(n, substr) {
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let stack = components.stack.formattedStack.split("\n");
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// Remove this method from the stack
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stack = stack.splice(1);
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stack = stack.map(line => {
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if (line.includes(" -> ")) {
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return line.split(" -> ")[1];
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}
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return line;
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});
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if (substr) {
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stack = stack.filter(line => {
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return line && !line.includes(substr);
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});
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}
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if (!stack[n]) {
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n = 0;
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}
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return (stack[n] || "");
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}
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/**
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* Return a stack object that can be serialized and, when
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* deserialized, passed to callFunctionWithAsyncStack.
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*/
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function getStack() {
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return components.stack.caller;
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}
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/**
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* Like Cu.callFunctionWithAsyncStack but handles the isWorker case
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* -- |Cu| isn't defined in workers.
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*/
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function callFunctionWithAsyncStack(callee, stack, id) {
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if (isWorker) {
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return callee();
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}
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return Cu.callFunctionWithAsyncStack(callee, stack, id);
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}
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exports.callFunctionWithAsyncStack = callFunctionWithAsyncStack;
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exports.getNthPathExcluding = getNthPathExcluding;
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exports.getStack = getStack;
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