setup-python/node_modules/@babel/traverse/lib/path/replacement.js
Danny McCormick 39c08a0eaa Initial pass
2019-06-26 21:12:00 -04:00

258 lines
6.9 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.replaceWithMultiple = replaceWithMultiple;
exports.replaceWithSourceString = replaceWithSourceString;
exports.replaceWith = replaceWith;
exports._replaceWith = _replaceWith;
exports.replaceExpressionWithStatements = replaceExpressionWithStatements;
exports.replaceInline = replaceInline;
function _codeFrame() {
const data = require("@babel/code-frame");
_codeFrame = function () {
return data;
};
return data;
}
var _index = _interopRequireDefault(require("../index"));
var _index2 = _interopRequireDefault(require("./index"));
function _parser() {
const data = require("@babel/parser");
_parser = function () {
return data;
};
return data;
}
function t() {
const data = _interopRequireWildcard(require("@babel/types"));
t = function () {
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 }; }
const hoistVariablesVisitor = {
Function(path) {
path.skip();
},
VariableDeclaration(path) {
if (path.node.kind !== "var") return;
const bindings = path.getBindingIdentifiers();
for (const key of Object.keys(bindings)) {
path.scope.push({
id: bindings[key]
});
}
const exprs = [];
for (const declar of path.node.declarations) {
if (declar.init) {
exprs.push(t().expressionStatement(t().assignmentExpression("=", declar.id, declar.init)));
}
}
path.replaceWithMultiple(exprs);
}
};
function replaceWithMultiple(nodes) {
this.resync();
nodes = this._verifyNodeList(nodes);
t().inheritLeadingComments(nodes[0], this.node);
t().inheritTrailingComments(nodes[nodes.length - 1], this.node);
this.node = this.container[this.key] = null;
const paths = this.insertAfter(nodes);
if (this.node) {
this.requeue();
} else {
this.remove();
}
return paths;
}
function replaceWithSourceString(replacement) {
this.resync();
try {
replacement = `(${replacement})`;
replacement = (0, _parser().parse)(replacement);
} catch (err) {
const loc = err.loc;
if (loc) {
err.message += " - make sure this is an expression.\n" + (0, _codeFrame().codeFrameColumns)(replacement, {
start: {
line: loc.line,
column: loc.column + 1
}
});
err.code = "BABEL_REPLACE_SOURCE_ERROR";
}
throw err;
}
replacement = replacement.program.body[0].expression;
_index.default.removeProperties(replacement);
return this.replaceWith(replacement);
}
function replaceWith(replacement) {
this.resync();
if (this.removed) {
throw new Error("You can't replace this node, we've already removed it");
}
if (replacement instanceof _index2.default) {
replacement = replacement.node;
}
if (!replacement) {
throw new Error("You passed `path.replaceWith()` a falsy node, use `path.remove()` instead");
}
if (this.node === replacement) {
return [this];
}
if (this.isProgram() && !t().isProgram(replacement)) {
throw new Error("You can only replace a Program root node with another Program node");
}
if (Array.isArray(replacement)) {
throw new Error("Don't use `path.replaceWith()` with an array of nodes, use `path.replaceWithMultiple()`");
}
if (typeof replacement === "string") {
throw new Error("Don't use `path.replaceWith()` with a source string, use `path.replaceWithSourceString()`");
}
let nodePath = "";
if (this.isNodeType("Statement") && t().isExpression(replacement)) {
if (!this.canHaveVariableDeclarationOrExpression() && !this.canSwapBetweenExpressionAndStatement(replacement) && !this.parentPath.isExportDefaultDeclaration()) {
replacement = t().expressionStatement(replacement);
nodePath = "expression";
}
}
if (this.isNodeType("Expression") && t().isStatement(replacement)) {
if (!this.canHaveVariableDeclarationOrExpression() && !this.canSwapBetweenExpressionAndStatement(replacement)) {
return this.replaceExpressionWithStatements([replacement]);
}
}
const oldNode = this.node;
if (oldNode) {
t().inheritsComments(replacement, oldNode);
t().removeComments(oldNode);
}
this._replaceWith(replacement);
this.type = replacement.type;
this.setScope();
this.requeue();
return [nodePath ? this.get(nodePath) : this];
}
function _replaceWith(node) {
if (!this.container) {
throw new ReferenceError("Container is falsy");
}
if (this.inList) {
t().validate(this.parent, this.key, [node]);
} else {
t().validate(this.parent, this.key, node);
}
this.debug(`Replace with ${node && node.type}`);
this.node = this.container[this.key] = node;
}
function replaceExpressionWithStatements(nodes) {
this.resync();
const toSequenceExpression = t().toSequenceExpression(nodes, this.scope);
if (toSequenceExpression) {
return this.replaceWith(toSequenceExpression)[0].get("expressions");
}
const container = t().arrowFunctionExpression([], t().blockStatement(nodes));
this.replaceWith(t().callExpression(container, []));
this.traverse(hoistVariablesVisitor);
const completionRecords = this.get("callee").getCompletionRecords();
for (const path of completionRecords) {
if (!path.isExpressionStatement()) continue;
const loop = path.findParent(path => path.isLoop());
if (loop) {
let uid = loop.getData("expressionReplacementReturnUid");
if (!uid) {
const callee = this.get("callee");
uid = callee.scope.generateDeclaredUidIdentifier("ret");
callee.get("body").pushContainer("body", t().returnStatement(t().cloneNode(uid)));
loop.setData("expressionReplacementReturnUid", uid);
} else {
uid = t().identifier(uid.name);
}
path.get("expression").replaceWith(t().assignmentExpression("=", t().cloneNode(uid), path.node.expression));
} else {
path.replaceWith(t().returnStatement(path.node.expression));
}
}
const callee = this.get("callee");
callee.arrowFunctionToExpression();
return callee.get("body.body");
}
function replaceInline(nodes) {
this.resync();
if (Array.isArray(nodes)) {
if (Array.isArray(this.container)) {
nodes = this._verifyNodeList(nodes);
const paths = this._containerInsertAfter(nodes);
this.remove();
return paths;
} else {
return this.replaceWithMultiple(nodes);
}
} else {
return this.replaceWith(nodes);
}
}