lepu-test-platform-web/node_modules/babel-traverse/lib/path/introspection.js

386 lines
10 KiB
JavaScript

"use strict";
exports.__esModule = true;
exports.is = undefined;
var _getIterator2 = require("babel-runtime/core-js/get-iterator");
var _getIterator3 = _interopRequireDefault(_getIterator2);
exports.matchesPattern = matchesPattern;
exports.has = has;
exports.isStatic = isStatic;
exports.isnt = isnt;
exports.equals = equals;
exports.isNodeType = isNodeType;
exports.canHaveVariableDeclarationOrExpression = canHaveVariableDeclarationOrExpression;
exports.canSwapBetweenExpressionAndStatement = canSwapBetweenExpressionAndStatement;
exports.isCompletionRecord = isCompletionRecord;
exports.isStatementOrBlock = isStatementOrBlock;
exports.referencesImport = referencesImport;
exports.getSource = getSource;
exports.willIMaybeExecuteBefore = willIMaybeExecuteBefore;
exports._guessExecutionStatusRelativeTo = _guessExecutionStatusRelativeTo;
exports._guessExecutionStatusRelativeToDifferentFunctions = _guessExecutionStatusRelativeToDifferentFunctions;
exports.resolve = resolve;
exports._resolve = _resolve;
var _includes = require("lodash/includes");
var _includes2 = _interopRequireDefault(_includes);
var _babelTypes = require("babel-types");
var t = _interopRequireWildcard(_babelTypes);
function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function matchesPattern(pattern, allowPartial) {
if (!this.isMemberExpression()) return false;
var parts = pattern.split(".");
var search = [this.node];
var i = 0;
function matches(name) {
var part = parts[i];
return part === "*" || name === part;
}
while (search.length) {
var node = search.shift();
if (allowPartial && i === parts.length) {
return true;
}
if (t.isIdentifier(node)) {
if (!matches(node.name)) return false;
} else if (t.isLiteral(node)) {
if (!matches(node.value)) return false;
} else if (t.isMemberExpression(node)) {
if (node.computed && !t.isLiteral(node.property)) {
return false;
} else {
search.unshift(node.property);
search.unshift(node.object);
continue;
}
} else if (t.isThisExpression(node)) {
if (!matches("this")) return false;
} else {
return false;
}
if (++i > parts.length) {
return false;
}
}
return i === parts.length;
}
function has(key) {
var val = this.node && this.node[key];
if (val && Array.isArray(val)) {
return !!val.length;
} else {
return !!val;
}
}
function isStatic() {
return this.scope.isStatic(this.node);
}
var is = exports.is = has;
function isnt(key) {
return !this.has(key);
}
function equals(key, value) {
return this.node[key] === value;
}
function isNodeType(type) {
return t.isType(this.type, type);
}
function canHaveVariableDeclarationOrExpression() {
return (this.key === "init" || this.key === "left") && this.parentPath.isFor();
}
function canSwapBetweenExpressionAndStatement(replacement) {
if (this.key !== "body" || !this.parentPath.isArrowFunctionExpression()) {
return false;
}
if (this.isExpression()) {
return t.isBlockStatement(replacement);
} else if (this.isBlockStatement()) {
return t.isExpression(replacement);
}
return false;
}
function isCompletionRecord(allowInsideFunction) {
var path = this;
var first = true;
do {
var container = path.container;
if (path.isFunction() && !first) {
return !!allowInsideFunction;
}
first = false;
if (Array.isArray(container) && path.key !== container.length - 1) {
return false;
}
} while ((path = path.parentPath) && !path.isProgram());
return true;
}
function isStatementOrBlock() {
if (this.parentPath.isLabeledStatement() || t.isBlockStatement(this.container)) {
return false;
} else {
return (0, _includes2.default)(t.STATEMENT_OR_BLOCK_KEYS, this.key);
}
}
function referencesImport(moduleSource, importName) {
if (!this.isReferencedIdentifier()) return false;
var binding = this.scope.getBinding(this.node.name);
if (!binding || binding.kind !== "module") return false;
var path = binding.path;
var parent = path.parentPath;
if (!parent.isImportDeclaration()) return false;
if (parent.node.source.value === moduleSource) {
if (!importName) return true;
} else {
return false;
}
if (path.isImportDefaultSpecifier() && importName === "default") {
return true;
}
if (path.isImportNamespaceSpecifier() && importName === "*") {
return true;
}
if (path.isImportSpecifier() && path.node.imported.name === importName) {
return true;
}
return false;
}
function getSource() {
var node = this.node;
if (node.end) {
return this.hub.file.code.slice(node.start, node.end);
} else {
return "";
}
}
function willIMaybeExecuteBefore(target) {
return this._guessExecutionStatusRelativeTo(target) !== "after";
}
function _guessExecutionStatusRelativeTo(target) {
var targetFuncParent = target.scope.getFunctionParent();
var selfFuncParent = this.scope.getFunctionParent();
if (targetFuncParent.node !== selfFuncParent.node) {
var status = this._guessExecutionStatusRelativeToDifferentFunctions(targetFuncParent);
if (status) {
return status;
} else {
target = targetFuncParent.path;
}
}
var targetPaths = target.getAncestry();
if (targetPaths.indexOf(this) >= 0) return "after";
var selfPaths = this.getAncestry();
var commonPath = void 0;
var targetIndex = void 0;
var selfIndex = void 0;
for (selfIndex = 0; selfIndex < selfPaths.length; selfIndex++) {
var selfPath = selfPaths[selfIndex];
targetIndex = targetPaths.indexOf(selfPath);
if (targetIndex >= 0) {
commonPath = selfPath;
break;
}
}
if (!commonPath) {
return "before";
}
var targetRelationship = targetPaths[targetIndex - 1];
var selfRelationship = selfPaths[selfIndex - 1];
if (!targetRelationship || !selfRelationship) {
return "before";
}
if (targetRelationship.listKey && targetRelationship.container === selfRelationship.container) {
return targetRelationship.key > selfRelationship.key ? "before" : "after";
}
var targetKeyPosition = t.VISITOR_KEYS[targetRelationship.type].indexOf(targetRelationship.key);
var selfKeyPosition = t.VISITOR_KEYS[selfRelationship.type].indexOf(selfRelationship.key);
return targetKeyPosition > selfKeyPosition ? "before" : "after";
}
function _guessExecutionStatusRelativeToDifferentFunctions(targetFuncParent) {
var targetFuncPath = targetFuncParent.path;
if (!targetFuncPath.isFunctionDeclaration()) return;
var binding = targetFuncPath.scope.getBinding(targetFuncPath.node.id.name);
if (!binding.references) return "before";
var referencePaths = binding.referencePaths;
for (var _iterator = referencePaths, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : (0, _getIterator3.default)(_iterator);;) {
var _ref;
if (_isArray) {
if (_i >= _iterator.length) break;
_ref = _iterator[_i++];
} else {
_i = _iterator.next();
if (_i.done) break;
_ref = _i.value;
}
var path = _ref;
if (path.key !== "callee" || !path.parentPath.isCallExpression()) {
return;
}
}
var allStatus = void 0;
for (var _iterator2 = referencePaths, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : (0, _getIterator3.default)(_iterator2);;) {
var _ref2;
if (_isArray2) {
if (_i2 >= _iterator2.length) break;
_ref2 = _iterator2[_i2++];
} else {
_i2 = _iterator2.next();
if (_i2.done) break;
_ref2 = _i2.value;
}
var _path = _ref2;
var childOfFunction = !!_path.find(function (path) {
return path.node === targetFuncPath.node;
});
if (childOfFunction) continue;
var status = this._guessExecutionStatusRelativeTo(_path);
if (allStatus) {
if (allStatus !== status) return;
} else {
allStatus = status;
}
}
return allStatus;
}
function resolve(dangerous, resolved) {
return this._resolve(dangerous, resolved) || this;
}
function _resolve(dangerous, resolved) {
if (resolved && resolved.indexOf(this) >= 0) return;
resolved = resolved || [];
resolved.push(this);
if (this.isVariableDeclarator()) {
if (this.get("id").isIdentifier()) {
return this.get("init").resolve(dangerous, resolved);
} else {}
} else if (this.isReferencedIdentifier()) {
var binding = this.scope.getBinding(this.node.name);
if (!binding) return;
if (!binding.constant) return;
if (binding.kind === "module") return;
if (binding.path !== this) {
var ret = binding.path.resolve(dangerous, resolved);
if (this.find(function (parent) {
return parent.node === ret.node;
})) return;
return ret;
}
} else if (this.isTypeCastExpression()) {
return this.get("expression").resolve(dangerous, resolved);
} else if (dangerous && this.isMemberExpression()) {
var targetKey = this.toComputedKey();
if (!t.isLiteral(targetKey)) return;
var targetName = targetKey.value;
var target = this.get("object").resolve(dangerous, resolved);
if (target.isObjectExpression()) {
var props = target.get("properties");
for (var _iterator3 = props, _isArray3 = Array.isArray(_iterator3), _i3 = 0, _iterator3 = _isArray3 ? _iterator3 : (0, _getIterator3.default)(_iterator3);;) {
var _ref3;
if (_isArray3) {
if (_i3 >= _iterator3.length) break;
_ref3 = _iterator3[_i3++];
} else {
_i3 = _iterator3.next();
if (_i3.done) break;
_ref3 = _i3.value;
}
var prop = _ref3;
if (!prop.isProperty()) continue;
var key = prop.get("key");
var match = prop.isnt("computed") && key.isIdentifier({ name: targetName });
match = match || key.isLiteral({ value: targetName });
if (match) return prop.get("value").resolve(dangerous, resolved);
}
} else if (target.isArrayExpression() && !isNaN(+targetName)) {
var elems = target.get("elements");
var elem = elems[targetName];
if (elem) return elem.resolve(dangerous, resolved);
}
}
}