diff options
Diffstat (limited to 'node_modules/@babel/helper-function-name/lib')
| -rw-r--r-- | node_modules/@babel/helper-function-name/lib/index.js | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/node_modules/@babel/helper-function-name/lib/index.js b/node_modules/@babel/helper-function-name/lib/index.js new file mode 100644 index 0000000..2fa33dc --- /dev/null +++ b/node_modules/@babel/helper-function-name/lib/index.js @@ -0,0 +1,192 @@ +"use strict"; + +Object.defineProperty(exports, "__esModule", { + value: true +}); +exports.default = _default; + +var _helperGetFunctionArity = require("@babel/helper-get-function-arity"); + +var _template = require("@babel/template"); + +var _t = require("@babel/types"); + +const { + NOT_LOCAL_BINDING, + cloneNode, + identifier, + isAssignmentExpression, + isFunction, + isIdentifier, + isLiteral, + isNullLiteral, + isObjectMethod, + isObjectProperty, + isRegExpLiteral, + isTemplateLiteral, + isVariableDeclarator, + toBindingIdentifierName +} = _t; +const buildPropertyMethodAssignmentWrapper = (0, _template.default)(` + (function (FUNCTION_KEY) { + function FUNCTION_ID() { + return FUNCTION_KEY.apply(this, arguments); + } + + FUNCTION_ID.toString = function () { + return FUNCTION_KEY.toString(); + } + + return FUNCTION_ID; + })(FUNCTION) +`); +const buildGeneratorPropertyMethodAssignmentWrapper = (0, _template.default)(` + (function (FUNCTION_KEY) { + function* FUNCTION_ID() { + return yield* FUNCTION_KEY.apply(this, arguments); + } + + FUNCTION_ID.toString = function () { + return FUNCTION_KEY.toString(); + }; + + return FUNCTION_ID; + })(FUNCTION) +`); +const visitor = { + "ReferencedIdentifier|BindingIdentifier"(path, state) { + if (path.node.name !== state.name) return; + const localDeclar = path.scope.getBindingIdentifier(state.name); + if (localDeclar !== state.outerDeclar) return; + state.selfReference = true; + path.stop(); + } + +}; + +function getNameFromLiteralId(id) { + if (isNullLiteral(id)) { + return "null"; + } + + if (isRegExpLiteral(id)) { + return `_${id.pattern}_${id.flags}`; + } + + if (isTemplateLiteral(id)) { + return id.quasis.map(quasi => quasi.value.raw).join(""); + } + + if (id.value !== undefined) { + return id.value + ""; + } + + return ""; +} + +function wrap(state, method, id, scope) { + if (state.selfReference) { + if (scope.hasBinding(id.name) && !scope.hasGlobal(id.name)) { + scope.rename(id.name); + } else { + if (!isFunction(method)) return; + let build = buildPropertyMethodAssignmentWrapper; + + if (method.generator) { + build = buildGeneratorPropertyMethodAssignmentWrapper; + } + + const template = build({ + FUNCTION: method, + FUNCTION_ID: id, + FUNCTION_KEY: scope.generateUidIdentifier(id.name) + }).expression; + const params = template.callee.body.body[0].params; + + for (let i = 0, len = (0, _helperGetFunctionArity.default)(method); i < len; i++) { + params.push(scope.generateUidIdentifier("x")); + } + + return template; + } + } + + method.id = id; + scope.getProgramParent().references[id.name] = true; +} + +function visit(node, name, scope) { + const state = { + selfAssignment: false, + selfReference: false, + outerDeclar: scope.getBindingIdentifier(name), + references: [], + name: name + }; + const binding = scope.getOwnBinding(name); + + if (binding) { + if (binding.kind === "param") { + state.selfReference = true; + } else {} + } else if (state.outerDeclar || scope.hasGlobal(name)) { + scope.traverse(node, visitor, state); + } + + return state; +} + +function _default({ + node, + parent, + scope, + id +}, localBinding = false, supportUnicodeId = false) { + if (node.id) return; + + if ((isObjectProperty(parent) || isObjectMethod(parent, { + kind: "method" + })) && (!parent.computed || isLiteral(parent.key))) { + id = parent.key; + } else if (isVariableDeclarator(parent)) { + id = parent.id; + + if (isIdentifier(id) && !localBinding) { + const binding = scope.parent.getBinding(id.name); + + if (binding && binding.constant && scope.getBinding(id.name) === binding) { + node.id = cloneNode(id); + node.id[NOT_LOCAL_BINDING] = true; + return; + } + } + } else if (isAssignmentExpression(parent, { + operator: "=" + })) { + id = parent.left; + } else if (!id) { + return; + } + + let name; + + if (id && isLiteral(id)) { + name = getNameFromLiteralId(id); + } else if (id && isIdentifier(id)) { + name = id.name; + } + + if (name === undefined) { + return; + } + + if (!supportUnicodeId && isFunction(node) && /[\uD800-\uDFFF]/.test(name)) { + return; + } + + name = toBindingIdentifierName(name); + id = identifier(name); + id[NOT_LOCAL_BINDING] = true; + const state = visit(node, name, scope); + return wrap(state, node, id, scope) || node; +}
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