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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/@babel/traverse/lib/path/introspection.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
switch to vuepress
Diffstat (limited to 'node_modules/@babel/traverse/lib/path/introspection.js')
| -rw-r--r-- | node_modules/@babel/traverse/lib/path/introspection.js | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/node_modules/@babel/traverse/lib/path/introspection.js b/node_modules/@babel/traverse/lib/path/introspection.js new file mode 100644 index 00000000..6177b65c --- /dev/null +++ b/node_modules/@babel/traverse/lib/path/introspection.js @@ -0,0 +1,412 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +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; +exports.isConstantExpression = isConstantExpression; +exports.isInStrictMode = isInStrictMode; +exports.is = void 0; + +function _includes() { + const data = _interopRequireDefault(require("lodash/includes")); + + _includes = function _includes() { + return data; + }; + + return data; +} + +function t() { + const data = _interopRequireWildcard(require("@babel/types")); + + t = function t() { + return data; + }; + + return data; +} + +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)) { var desc = Object.defineProperty && Object.getOwnPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : {}; if (desc.get || desc.set) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; return newObj; } } + +function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } + +function matchesPattern(pattern, allowPartial) { + return t().matchesPattern(this.node, pattern, allowPartial); +} + +function has(key) { + const 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); +} + +const is = has; +exports.is = is; + +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) { + let path = this; + let first = true; + + do { + const 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, _includes().default)(t().STATEMENT_OR_BLOCK_KEYS, this.key); + } +} + +function referencesImport(moduleSource, importName) { + if (!this.isReferencedIdentifier()) return false; + const binding = this.scope.getBinding(this.node.name); + if (!binding || binding.kind !== "module") return false; + const path = binding.path; + const 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() { + const 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) { + const targetFuncParent = target.scope.getFunctionParent() || target.scope.getProgramParent(); + const selfFuncParent = this.scope.getFunctionParent() || target.scope.getProgramParent(); + + if (targetFuncParent.node !== selfFuncParent.node) { + const status = this._guessExecutionStatusRelativeToDifferentFunctions(targetFuncParent); + + if (status) { + return status; + } else { + target = targetFuncParent.path; + } + } + + const targetPaths = target.getAncestry(); + if (targetPaths.indexOf(this) >= 0) return "after"; + const selfPaths = this.getAncestry(); + let commonPath; + let targetIndex; + let selfIndex; + + for (selfIndex = 0; selfIndex < selfPaths.length; selfIndex++) { + const selfPath = selfPaths[selfIndex]; + targetIndex = targetPaths.indexOf(selfPath); + + if (targetIndex >= 0) { + commonPath = selfPath; + break; + } + } + + if (!commonPath) { + return "before"; + } + + const targetRelationship = targetPaths[targetIndex - 1]; + const selfRelationship = selfPaths[selfIndex - 1]; + + if (!targetRelationship || !selfRelationship) { + return "before"; + } + + if (targetRelationship.listKey && targetRelationship.container === selfRelationship.container) { + return targetRelationship.key > selfRelationship.key ? "before" : "after"; + } + + const keys = t().VISITOR_KEYS[commonPath.type]; + const targetKeyPosition = keys.indexOf(targetRelationship.key); + const selfKeyPosition = keys.indexOf(selfRelationship.key); + return targetKeyPosition > selfKeyPosition ? "before" : "after"; +} + +function _guessExecutionStatusRelativeToDifferentFunctions(targetFuncParent) { + const targetFuncPath = targetFuncParent.path; + if (!targetFuncPath.isFunctionDeclaration()) return; + const binding = targetFuncPath.scope.getBinding(targetFuncPath.node.id.name); + if (!binding.references) return "before"; + const referencePaths = binding.referencePaths; + + for (var _iterator = referencePaths, _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) { + var _ref; + + if (_isArray) { + if (_i >= _iterator.length) break; + _ref = _iterator[_i++]; + } else { + _i = _iterator.next(); + if (_i.done) break; + _ref = _i.value; + } + + const path = _ref; + + if (path.key !== "callee" || !path.parentPath.isCallExpression()) { + return; + } + } + + let allStatus; + + for (var _iterator2 = referencePaths, _isArray2 = Array.isArray(_iterator2), _i2 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) { + var _ref2; + + if (_isArray2) { + if (_i2 >= _iterator2.length) break; + _ref2 = _iterator2[_i2++]; + } else { + _i2 = _iterator2.next(); + if (_i2.done) break; + _ref2 = _i2.value; + } + + const path = _ref2; + const childOfFunction = !!path.find(path => path.node === targetFuncPath.node); + if (childOfFunction) continue; + + const 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()) { + const binding = this.scope.getBinding(this.node.name); + if (!binding) return; + if (!binding.constant) return; + if (binding.kind === "module") return; + + if (binding.path !== this) { + const ret = binding.path.resolve(dangerous, resolved); + if (this.find(parent => parent.node === ret.node)) return; + return ret; + } + } else if (this.isTypeCastExpression()) { + return this.get("expression").resolve(dangerous, resolved); + } else if (dangerous && this.isMemberExpression()) { + const targetKey = this.toComputedKey(); + if (!t().isLiteral(targetKey)) return; + const targetName = targetKey.value; + const target = this.get("object").resolve(dangerous, resolved); + + if (target.isObjectExpression()) { + const props = target.get("properties"); + var _arr = props; + + for (var _i3 = 0; _i3 < _arr.length; _i3++) { + const prop = _arr[_i3]; + if (!prop.isProperty()) continue; + const key = prop.get("key"); + let 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)) { + const elems = target.get("elements"); + const elem = elems[targetName]; + if (elem) return elem.resolve(dangerous, resolved); + } + } +} + +function isConstantExpression() { + if (this.isIdentifier()) { + const binding = this.scope.getBinding(this.node.name); + + if (!binding) { + return false; + } + + return binding.constant && binding.path.get("init").isConstantExpression(); + } + + if (this.isLiteral()) { + if (this.isRegExpLiteral()) { + return false; + } + + if (this.isTemplateLiteral()) { + return this.get("expressions").every(expression => expression.isConstantExpression()); + } + + return true; + } + + if (this.isUnaryExpression()) { + if (this.get("operator").node !== "void") { + return false; + } + + return this.get("argument").isConstantExpression(); + } + + if (this.isBinaryExpression()) { + return this.get("left").isConstantExpression() && this.get("right").isConstantExpression(); + } + + return false; +} + +function isInStrictMode() { + const start = this.isProgram() ? this : this.parentPath; + const strictParent = start.find(path => { + if (path.isProgram({ + sourceType: "module" + })) return true; + if (path.isClass()) return true; + if (!path.isProgram() && !path.isFunction()) return false; + + if (path.isArrowFunctionExpression() && !path.get("body").isBlockStatement()) { + return false; + } + + let node = path.node; + if (path.isFunction()) node = node.body; + + for (var _iterator3 = node.directives, _isArray3 = Array.isArray(_iterator3), _i4 = 0, _iterator3 = _isArray3 ? _iterator3 : _iterator3[Symbol.iterator]();;) { + var _ref3; + + if (_isArray3) { + if (_i4 >= _iterator3.length) break; + _ref3 = _iterator3[_i4++]; + } else { + _i4 = _iterator3.next(); + if (_i4.done) break; + _ref3 = _i4.value; + } + + const directive = _ref3; + + if (directive.value.value === "use strict") { + return true; + } + } + }); + return !!strictParent; +}
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