diff options
Diffstat (limited to 'node_modules/istanbul-lib-instrument/node_modules/babel-traverse/lib/path/inference/inferer-reference.js')
| -rw-r--r-- | node_modules/istanbul-lib-instrument/node_modules/babel-traverse/lib/path/inference/inferer-reference.js | 185 |
1 files changed, 0 insertions, 185 deletions
diff --git a/node_modules/istanbul-lib-instrument/node_modules/babel-traverse/lib/path/inference/inferer-reference.js b/node_modules/istanbul-lib-instrument/node_modules/babel-traverse/lib/path/inference/inferer-reference.js deleted file mode 100644 index 3a8ff31e6..000000000 --- a/node_modules/istanbul-lib-instrument/node_modules/babel-traverse/lib/path/inference/inferer-reference.js +++ /dev/null @@ -1,185 +0,0 @@ -"use strict"; - -exports.__esModule = true; - -var _getIterator2 = require("babel-runtime/core-js/get-iterator"); - -var _getIterator3 = _interopRequireDefault(_getIterator2); - -exports.default = function (node) { - if (!this.isReferenced()) return; - - var binding = this.scope.getBinding(node.name); - if (binding) { - if (binding.identifier.typeAnnotation) { - return binding.identifier.typeAnnotation; - } else { - return getTypeAnnotationBindingConstantViolations(this, node.name); - } - } - - if (node.name === "undefined") { - return t.voidTypeAnnotation(); - } else if (node.name === "NaN" || node.name === "Infinity") { - return t.numberTypeAnnotation(); - } else if (node.name === "arguments") {} -}; - -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 getTypeAnnotationBindingConstantViolations(path, name) { - var binding = path.scope.getBinding(name); - - var types = []; - path.typeAnnotation = t.unionTypeAnnotation(types); - - var functionConstantViolations = []; - var constantViolations = getConstantViolationsBefore(binding, path, functionConstantViolations); - - var testType = getConditionalAnnotation(path, name); - if (testType) { - var testConstantViolations = getConstantViolationsBefore(binding, testType.ifStatement); - - constantViolations = constantViolations.filter(function (path) { - return testConstantViolations.indexOf(path) < 0; - }); - - types.push(testType.typeAnnotation); - } - - if (constantViolations.length) { - constantViolations = constantViolations.concat(functionConstantViolations); - - for (var _iterator = constantViolations, _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 violation = _ref; - - types.push(violation.getTypeAnnotation()); - } - } - - if (types.length) { - return t.createUnionTypeAnnotation(types); - } -} - -function getConstantViolationsBefore(binding, path, functions) { - var violations = binding.constantViolations.slice(); - violations.unshift(binding.path); - return violations.filter(function (violation) { - violation = violation.resolve(); - var status = violation._guessExecutionStatusRelativeTo(path); - if (functions && status === "function") functions.push(violation); - return status === "before"; - }); -} - -function inferAnnotationFromBinaryExpression(name, path) { - var operator = path.node.operator; - - var right = path.get("right").resolve(); - var left = path.get("left").resolve(); - - var target = void 0; - if (left.isIdentifier({ name: name })) { - target = right; - } else if (right.isIdentifier({ name: name })) { - target = left; - } - if (target) { - if (operator === "===") { - return target.getTypeAnnotation(); - } else if (t.BOOLEAN_NUMBER_BINARY_OPERATORS.indexOf(operator) >= 0) { - return t.numberTypeAnnotation(); - } else { - return; - } - } else { - if (operator !== "===") return; - } - - var typeofPath = void 0; - var typePath = void 0; - if (left.isUnaryExpression({ operator: "typeof" })) { - typeofPath = left; - typePath = right; - } else if (right.isUnaryExpression({ operator: "typeof" })) { - typeofPath = right; - typePath = left; - } - if (!typePath && !typeofPath) return; - - typePath = typePath.resolve(); - if (!typePath.isLiteral()) return; - - var typeValue = typePath.node.value; - if (typeof typeValue !== "string") return; - - if (!typeofPath.get("argument").isIdentifier({ name: name })) return; - - return t.createTypeAnnotationBasedOnTypeof(typePath.node.value); -} - -function getParentConditionalPath(path) { - var parentPath = void 0; - while (parentPath = path.parentPath) { - if (parentPath.isIfStatement() || parentPath.isConditionalExpression()) { - if (path.key === "test") { - return; - } else { - return parentPath; - } - } else { - path = parentPath; - } - } -} - -function getConditionalAnnotation(path, name) { - var ifStatement = getParentConditionalPath(path); - if (!ifStatement) return; - - var test = ifStatement.get("test"); - var paths = [test]; - var types = []; - - do { - var _path = paths.shift().resolve(); - - if (_path.isLogicalExpression()) { - paths.push(_path.get("left")); - paths.push(_path.get("right")); - } - - if (_path.isBinaryExpression()) { - var type = inferAnnotationFromBinaryExpression(name, _path); - if (type) types.push(type); - } - } while (paths.length); - - if (types.length) { - return { - typeAnnotation: t.createUnionTypeAnnotation(types), - ifStatement: ifStatement - }; - } else { - return getConditionalAnnotation(ifStatement, name); - } -} -module.exports = exports["default"];
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