mirror of https://github.com/actions/setup-python
673 lines
20 KiB
JavaScript
673 lines
20 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = void 0;
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var _crypto = require("crypto");
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var _template = _interopRequireDefault(require("@babel/template"));
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var _sourceCoverage = require("./source-coverage");
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var _constants = require("./constants");
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var _instrumenter = require("./instrumenter");
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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// pattern for istanbul to ignore a section
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const COMMENT_RE = /^\s*istanbul\s+ignore\s+(if|else|next)(?=\W|$)/; // pattern for istanbul to ignore the whole file
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const COMMENT_FILE_RE = /^\s*istanbul\s+ignore\s+(file)(?=\W|$)/; // source map URL pattern
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const SOURCE_MAP_RE = /[#@]\s*sourceMappingURL=(.*)\s*$/m; // generate a variable name from hashing the supplied file path
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function genVar(filename) {
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const hash = (0, _crypto.createHash)(_constants.SHA);
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hash.update(filename);
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return 'cov_' + parseInt(hash.digest('hex').substr(0, 12), 16).toString(36);
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} // VisitState holds the state of the visitor, provides helper functions
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// and is the `this` for the individual coverage visitors.
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class VisitState {
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constructor(types, sourceFilePath, inputSourceMap, ignoreClassMethods = []) {
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this.varName = genVar(sourceFilePath);
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this.attrs = {};
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this.nextIgnore = null;
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this.cov = new _sourceCoverage.SourceCoverage(sourceFilePath);
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if (typeof inputSourceMap !== 'undefined') {
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this.cov.inputSourceMap(inputSourceMap);
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}
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this.ignoreClassMethods = ignoreClassMethods;
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this.types = types;
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this.sourceMappingURL = null;
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} // should we ignore the node? Yes, if specifically ignoring
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// or if the node is generated.
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shouldIgnore(path) {
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return this.nextIgnore || !path.node.loc;
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} // extract the ignore comment hint (next|if|else) or null
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hintFor(node) {
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let hint = null;
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if (node.leadingComments) {
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node.leadingComments.forEach(c => {
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const v = (c.value ||
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/* istanbul ignore next: paranoid check */
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'').trim();
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const groups = v.match(COMMENT_RE);
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if (groups) {
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hint = groups[1];
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}
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});
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}
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return hint;
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} // extract a source map URL from comments and keep track of it
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maybeAssignSourceMapURL(node) {
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const extractURL = comments => {
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if (!comments) {
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return;
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}
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comments.forEach(c => {
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const v = (c.value ||
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/* istanbul ignore next: paranoid check */
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'').trim();
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const groups = v.match(SOURCE_MAP_RE);
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if (groups) {
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this.sourceMappingURL = groups[1];
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}
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});
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};
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extractURL(node.leadingComments);
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extractURL(node.trailingComments);
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} // for these expressions the statement counter needs to be hoisted, so
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// function name inference can be preserved
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counterNeedsHoisting(path) {
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return path.isFunctionExpression() || path.isArrowFunctionExpression() || path.isClassExpression();
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} // all the generic stuff that needs to be done on enter for every node
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onEnter(path) {
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const n = path.node;
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this.maybeAssignSourceMapURL(n); // if already ignoring, nothing more to do
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if (this.nextIgnore !== null) {
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return;
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} // check hint to see if ignore should be turned on
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const hint = this.hintFor(n);
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if (hint === 'next') {
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this.nextIgnore = n;
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return;
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} // else check custom node attribute set by a prior visitor
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if (this.getAttr(path.node, 'skip-all') !== null) {
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this.nextIgnore = n;
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} // else check for ignored class methods
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if (path.isFunctionExpression() && this.ignoreClassMethods.some(name => path.node.id && name === path.node.id.name)) {
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this.nextIgnore = n;
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return;
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}
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if (path.isClassMethod() && this.ignoreClassMethods.some(name => name === path.node.key.name)) {
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this.nextIgnore = n;
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return;
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}
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} // all the generic stuff on exit of a node,
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// including reseting ignores and custom node attrs
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onExit(path) {
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// restore ignore status, if needed
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if (path.node === this.nextIgnore) {
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this.nextIgnore = null;
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} // nuke all attributes for the node
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delete path.node.__cov__;
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} // set a node attribute for the supplied node
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setAttr(node, name, value) {
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node.__cov__ = node.__cov__ || {};
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node.__cov__[name] = value;
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} // retrieve a node attribute for the supplied node or null
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getAttr(node, name) {
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const c = node.__cov__;
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if (!c) {
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return null;
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}
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return c[name];
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} //
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increase(type, id, index) {
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const T = this.types;
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const wrap = index !== null ? // If `index` present, turn `x` into `x[index]`.
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x => T.memberExpression(x, T.numericLiteral(index), true) : x => x;
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return T.updateExpression('++', wrap(T.memberExpression(T.memberExpression(T.identifier(this.varName), T.identifier(type)), T.numericLiteral(id), true)));
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}
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insertCounter(path, increment) {
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const T = this.types;
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if (path.isBlockStatement()) {
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path.node.body.unshift(T.expressionStatement(increment));
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} else if (path.isStatement()) {
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path.insertBefore(T.expressionStatement(increment));
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} else if (this.counterNeedsHoisting(path) && T.isVariableDeclarator(path.parentPath)) {
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// make an attempt to hoist the statement counter, so that
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// function names are maintained.
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const parent = path.parentPath.parentPath;
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if (parent && T.isExportNamedDeclaration(parent.parentPath)) {
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parent.parentPath.insertBefore(T.expressionStatement(increment));
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} else if (parent && (T.isProgram(parent.parentPath) || T.isBlockStatement(parent.parentPath))) {
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parent.insertBefore(T.expressionStatement(increment));
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} else {
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path.replaceWith(T.sequenceExpression([increment, path.node]));
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}
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}
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/* istanbul ignore else: not expected */
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else if (path.isExpression()) {
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path.replaceWith(T.sequenceExpression([increment, path.node]));
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} else {
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console.error('Unable to insert counter for node type:', path.node.type);
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}
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}
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insertStatementCounter(path) {
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/* istanbul ignore if: paranoid check */
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if (!(path.node && path.node.loc)) {
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return;
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}
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const index = this.cov.newStatement(path.node.loc);
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const increment = this.increase('s', index, null);
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this.insertCounter(path, increment);
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}
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insertFunctionCounter(path) {
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const T = this.types;
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/* istanbul ignore if: paranoid check */
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if (!(path.node && path.node.loc)) {
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return;
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}
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const n = path.node;
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let dloc = null; // get location for declaration
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switch (n.type) {
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case 'FunctionDeclaration':
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/* istanbul ignore else: paranoid check */
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if (n.id) {
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dloc = n.id.loc;
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}
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break;
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case 'FunctionExpression':
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if (n.id) {
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dloc = n.id.loc;
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}
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break;
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}
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if (!dloc) {
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dloc = {
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start: n.loc.start,
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end: {
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line: n.loc.start.line,
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column: n.loc.start.column + 1
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}
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};
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}
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const name = path.node.id ? path.node.id.name : path.node.name;
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const index = this.cov.newFunction(name, dloc, path.node.body.loc);
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const increment = this.increase('f', index, null);
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const body = path.get('body');
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/* istanbul ignore else: not expected */
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if (body.isBlockStatement()) {
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body.node.body.unshift(T.expressionStatement(increment));
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} else {
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console.error('Unable to process function body node type:', path.node.type);
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}
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}
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getBranchIncrement(branchName, loc) {
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const index = this.cov.addBranchPath(branchName, loc);
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return this.increase('b', branchName, index);
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}
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insertBranchCounter(path, branchName, loc) {
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const increment = this.getBranchIncrement(branchName, loc || path.node.loc);
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this.insertCounter(path, increment);
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}
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findLeaves(node, accumulator, parent, property) {
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if (!node) {
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return;
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}
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if (node.type === 'LogicalExpression') {
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const hint = this.hintFor(node);
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if (hint !== 'next') {
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this.findLeaves(node.left, accumulator, node, 'left');
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this.findLeaves(node.right, accumulator, node, 'right');
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}
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} else {
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accumulator.push({
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node,
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parent,
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property
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});
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}
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}
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} // generic function that takes a set of visitor methods and
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// returns a visitor object with `enter` and `exit` properties,
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// such that:
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//
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// * standard entry processing is done
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// * the supplied visitors are called only when ignore is not in effect
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// This relieves them from worrying about ignore states and generated nodes.
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// * standard exit processing is done
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//
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function entries(...enter) {
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// the enter function
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const wrappedEntry = function wrappedEntry(path, node) {
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this.onEnter(path);
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if (this.shouldIgnore(path)) {
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return;
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}
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enter.forEach(e => {
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e.call(this, path, node);
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});
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};
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const exit = function exit(path, node) {
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this.onExit(path, node);
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};
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return {
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enter: wrappedEntry,
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exit
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};
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}
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function coverStatement(path) {
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this.insertStatementCounter(path);
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}
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/* istanbul ignore next: no node.js support */
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function coverAssignmentPattern(path) {
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const n = path.node;
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const b = this.cov.newBranch('default-arg', n.loc);
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this.insertBranchCounter(path.get('right'), b);
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}
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function coverFunction(path) {
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this.insertFunctionCounter(path);
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}
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function coverVariableDeclarator(path) {
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this.insertStatementCounter(path.get('init'));
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}
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function coverClassPropDeclarator(path) {
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this.insertStatementCounter(path.get('value'));
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}
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function makeBlock(path) {
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const T = this.types;
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if (!path.node) {
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path.replaceWith(T.blockStatement([]));
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}
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if (!path.isBlockStatement()) {
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path.replaceWith(T.blockStatement([path.node]));
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path.node.loc = path.node.body[0].loc;
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}
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}
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function blockProp(prop) {
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return function (path) {
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makeBlock.call(this, path.get(prop));
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};
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}
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function makeParenthesizedExpressionForNonIdentifier(path) {
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const T = this.types;
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if (path.node && !path.isIdentifier()) {
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path.replaceWith(T.parenthesizedExpression(path.node));
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}
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}
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function parenthesizedExpressionProp(prop) {
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return function (path) {
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makeParenthesizedExpressionForNonIdentifier.call(this, path.get(prop));
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};
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}
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function convertArrowExpression(path) {
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const n = path.node;
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const T = this.types;
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if (!T.isBlockStatement(n.body)) {
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const bloc = n.body.loc;
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if (n.expression === true) {
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n.expression = false;
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}
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n.body = T.blockStatement([T.returnStatement(n.body)]); // restore body location
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n.body.loc = bloc; // set up the location for the return statement so it gets
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// instrumented
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n.body.body[0].loc = bloc;
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}
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}
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function coverIfBranches(path) {
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const n = path.node;
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const hint = this.hintFor(n);
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const ignoreIf = hint === 'if';
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const ignoreElse = hint === 'else';
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const branch = this.cov.newBranch('if', n.loc);
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if (ignoreIf) {
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this.setAttr(n.consequent, 'skip-all', true);
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} else {
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this.insertBranchCounter(path.get('consequent'), branch, n.loc);
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}
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if (ignoreElse) {
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this.setAttr(n.alternate, 'skip-all', true);
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} else {
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this.insertBranchCounter(path.get('alternate'), branch, n.loc);
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}
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}
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function createSwitchBranch(path) {
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const b = this.cov.newBranch('switch', path.node.loc);
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this.setAttr(path.node, 'branchName', b);
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}
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function coverSwitchCase(path) {
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const T = this.types;
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const b = this.getAttr(path.parentPath.node, 'branchName');
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/* istanbul ignore if: paranoid check */
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if (b === null) {
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throw new Error('Unable to get switch branch name');
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}
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const increment = this.getBranchIncrement(b, path.node.loc);
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path.node.consequent.unshift(T.expressionStatement(increment));
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}
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function coverTernary(path) {
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const n = path.node;
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const branch = this.cov.newBranch('cond-expr', path.node.loc);
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const cHint = this.hintFor(n.consequent);
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const aHint = this.hintFor(n.alternate);
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if (cHint !== 'next') {
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this.insertBranchCounter(path.get('consequent'), branch);
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}
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if (aHint !== 'next') {
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this.insertBranchCounter(path.get('alternate'), branch);
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}
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}
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function coverLogicalExpression(path) {
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const T = this.types;
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if (path.parentPath.node.type === 'LogicalExpression') {
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return; // already processed
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}
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const leaves = [];
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this.findLeaves(path.node, leaves);
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const b = this.cov.newBranch('binary-expr', path.node.loc);
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for (let i = 0; i < leaves.length; i += 1) {
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const leaf = leaves[i];
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const hint = this.hintFor(leaf.node);
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if (hint === 'next') {
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continue;
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}
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const increment = this.getBranchIncrement(b, leaf.node.loc);
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if (!increment) {
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continue;
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}
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leaf.parent[leaf.property] = T.sequenceExpression([increment, leaf.node]);
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}
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}
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const codeVisitor = {
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ArrowFunctionExpression: entries(convertArrowExpression, coverFunction),
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AssignmentPattern: entries(coverAssignmentPattern),
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BlockStatement: entries(),
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// ignore processing only
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ExportDefaultDeclaration: entries(),
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// ignore processing only
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ExportNamedDeclaration: entries(),
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// ignore processing only
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ClassMethod: entries(coverFunction),
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ClassDeclaration: entries(parenthesizedExpressionProp('superClass')),
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ClassProperty: entries(coverClassPropDeclarator),
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ClassPrivateProperty: entries(coverClassPropDeclarator),
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ObjectMethod: entries(coverFunction),
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ExpressionStatement: entries(coverStatement),
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BreakStatement: entries(coverStatement),
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ContinueStatement: entries(coverStatement),
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DebuggerStatement: entries(coverStatement),
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ReturnStatement: entries(coverStatement),
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ThrowStatement: entries(coverStatement),
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TryStatement: entries(coverStatement),
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VariableDeclaration: entries(),
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// ignore processing only
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VariableDeclarator: entries(coverVariableDeclarator),
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IfStatement: entries(blockProp('consequent'), blockProp('alternate'), coverStatement, coverIfBranches),
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ForStatement: entries(blockProp('body'), coverStatement),
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ForInStatement: entries(blockProp('body'), coverStatement),
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ForOfStatement: entries(blockProp('body'), coverStatement),
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WhileStatement: entries(blockProp('body'), coverStatement),
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DoWhileStatement: entries(blockProp('body'), coverStatement),
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SwitchStatement: entries(createSwitchBranch, coverStatement),
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SwitchCase: entries(coverSwitchCase),
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WithStatement: entries(blockProp('body'), coverStatement),
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FunctionDeclaration: entries(coverFunction),
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FunctionExpression: entries(coverFunction),
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LabeledStatement: entries(coverStatement),
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ConditionalExpression: entries(coverTernary),
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LogicalExpression: entries(coverLogicalExpression)
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};
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const globalTemplateAlteredFunction = (0, _template.default)(`
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var Function = (function(){}).constructor;
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var global = (new Function(GLOBAL_COVERAGE_SCOPE))();
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`);
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const globalTemplateFunction = (0, _template.default)(`
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var global = (new Function(GLOBAL_COVERAGE_SCOPE))();
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`);
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const globalTemplateVariable = (0, _template.default)(`
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var global = GLOBAL_COVERAGE_SCOPE;
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`); // the template to insert at the top of the program.
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const coverageTemplate = (0, _template.default)(`
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var COVERAGE_VAR = (function () {
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var path = PATH;
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var hash = HASH;
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GLOBAL_COVERAGE_TEMPLATE
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var gcv = GLOBAL_COVERAGE_VAR;
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var coverageData = INITIAL;
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var coverage = global[gcv] || (global[gcv] = {});
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if (coverage[path] && coverage[path].hash === hash) {
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return coverage[path];
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}
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return coverage[path] = coverageData;
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})();
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`); // the rewire plugin (and potentially other babel middleware)
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// may cause files to be instrumented twice, see:
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// https://github.com/istanbuljs/babel-plugin-istanbul/issues/94
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// we should only instrument code for coverage the first time
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// it's run through istanbul-lib-instrument.
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|
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function alreadyInstrumented(path, visitState) {
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return path.scope.hasBinding(visitState.varName);
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}
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|
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function shouldIgnoreFile(programNode) {
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return programNode.parent && programNode.parent.comments.some(c => COMMENT_FILE_RE.test(c.value));
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}
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const defaultProgramVisitorOpts = {
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inputSourceMap: undefined
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};
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/**
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* programVisitor is a `babel` adaptor for instrumentation.
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* It returns an object with two methods `enter` and `exit`.
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* These should be assigned to or called from `Program` entry and exit functions
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* in a babel visitor.
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|
* These functions do not make assumptions about the state set by Babel and thus
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|
* can be used in a context other than a Babel plugin.
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|
*
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|
* The exit function returns an object that currently has the following keys:
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|
*
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|
* `fileCoverage` - the file coverage object created for the source file.
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* `sourceMappingURL` - any source mapping URL found when processing the file.
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|
*
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|
* @param {Object} types - an instance of babel-types
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|
* @param {string} sourceFilePath - the path to source file
|
|
* @param {Object} opts - additional options
|
|
* @param {string} [opts.coverageVariable=__coverage__] the global coverage variable name.
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|
* @param {string} [opts.coverageGlobalScope=this] the global coverage variable scope.
|
|
* @param {boolean} [opts.coverageGlobalScopeFunc=true] use an evaluated function to find coverageGlobalScope.
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|
* @param {Array} [opts.ignoreClassMethods=[]] names of methods to ignore by default on classes.
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|
* @param {object} [opts.inputSourceMap=undefined] the input source map, that maps the uninstrumented code back to the
|
|
* original code.
|
|
*/
|
|
|
|
function programVisitor(types, sourceFilePath = 'unknown.js', opts = defaultProgramVisitorOpts) {
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|
const T = types; // This sets some unused options but ensures all required options are initialized
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|
|
|
opts = Object.assign({}, (0, _instrumenter.defaultOpts)(), defaultProgramVisitorOpts, opts);
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|
const visitState = new VisitState(types, sourceFilePath, opts.inputSourceMap, opts.ignoreClassMethods);
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|
return {
|
|
enter(path) {
|
|
if (shouldIgnoreFile(path.find(p => p.isProgram()))) {
|
|
return;
|
|
}
|
|
|
|
if (alreadyInstrumented(path, visitState)) {
|
|
return;
|
|
}
|
|
|
|
path.traverse(codeVisitor, visitState);
|
|
},
|
|
|
|
exit(path) {
|
|
if (alreadyInstrumented(path, visitState)) {
|
|
return;
|
|
}
|
|
|
|
visitState.cov.freeze();
|
|
const coverageData = visitState.cov.toJSON();
|
|
|
|
if (shouldIgnoreFile(path.find(p => p.isProgram()))) {
|
|
return {
|
|
fileCoverage: coverageData,
|
|
sourceMappingURL: visitState.sourceMappingURL
|
|
};
|
|
}
|
|
|
|
coverageData[_constants.MAGIC_KEY] = _constants.MAGIC_VALUE;
|
|
const hash = (0, _crypto.createHash)(_constants.SHA).update(JSON.stringify(coverageData)).digest('hex');
|
|
coverageData.hash = hash;
|
|
const coverageNode = T.valueToNode(coverageData);
|
|
delete coverageData[_constants.MAGIC_KEY];
|
|
delete coverageData.hash;
|
|
let gvTemplate;
|
|
|
|
if (opts.coverageGlobalScopeFunc) {
|
|
if (path.scope.getBinding('Function')) {
|
|
gvTemplate = globalTemplateAlteredFunction({
|
|
GLOBAL_COVERAGE_SCOPE: T.stringLiteral('return ' + opts.coverageGlobalScope)
|
|
});
|
|
} else {
|
|
gvTemplate = globalTemplateFunction({
|
|
GLOBAL_COVERAGE_SCOPE: T.stringLiteral('return ' + opts.coverageGlobalScope)
|
|
});
|
|
}
|
|
} else {
|
|
gvTemplate = globalTemplateVariable({
|
|
GLOBAL_COVERAGE_SCOPE: opts.coverageGlobalScope
|
|
});
|
|
}
|
|
|
|
const cv = coverageTemplate({
|
|
GLOBAL_COVERAGE_VAR: T.stringLiteral(opts.coverageVariable),
|
|
GLOBAL_COVERAGE_TEMPLATE: gvTemplate,
|
|
COVERAGE_VAR: T.identifier(visitState.varName),
|
|
PATH: T.stringLiteral(sourceFilePath),
|
|
INITIAL: coverageNode,
|
|
HASH: T.stringLiteral(hash)
|
|
});
|
|
cv._blockHoist = 5;
|
|
path.node.body.unshift(cv);
|
|
return {
|
|
fileCoverage: coverageData,
|
|
sourceMappingURL: visitState.sourceMappingURL
|
|
};
|
|
}
|
|
|
|
};
|
|
}
|
|
|
|
var _default = programVisitor;
|
|
exports.default = _default; |