You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
366 lines
12 KiB
366 lines
12 KiB
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.default = rewriteLiveReferences;
|
|
var _assert = require("assert");
|
|
var _t = require("@babel/types");
|
|
var _template = require("@babel/template");
|
|
var _helperSimpleAccess = require("@babel/helper-simple-access");
|
|
const {
|
|
assignmentExpression,
|
|
callExpression,
|
|
cloneNode,
|
|
expressionStatement,
|
|
getOuterBindingIdentifiers,
|
|
identifier,
|
|
isMemberExpression,
|
|
isVariableDeclaration,
|
|
jsxIdentifier,
|
|
jsxMemberExpression,
|
|
memberExpression,
|
|
numericLiteral,
|
|
sequenceExpression,
|
|
stringLiteral,
|
|
variableDeclaration,
|
|
variableDeclarator
|
|
} = _t;
|
|
function isInType(path) {
|
|
do {
|
|
switch (path.parent.type) {
|
|
case "TSTypeAnnotation":
|
|
case "TSTypeAliasDeclaration":
|
|
case "TSTypeReference":
|
|
case "TypeAnnotation":
|
|
case "TypeAlias":
|
|
return true;
|
|
case "ExportSpecifier":
|
|
return path.parentPath.parent.exportKind === "type";
|
|
default:
|
|
if (path.parentPath.isStatement() || path.parentPath.isExpression()) {
|
|
return false;
|
|
}
|
|
}
|
|
} while (path = path.parentPath);
|
|
}
|
|
function rewriteLiveReferences(programPath, metadata) {
|
|
const imported = new Map();
|
|
const exported = new Map();
|
|
const requeueInParent = path => {
|
|
programPath.requeue(path);
|
|
};
|
|
for (const [source, data] of metadata.source) {
|
|
for (const [localName, importName] of data.imports) {
|
|
imported.set(localName, [source, importName, null]);
|
|
}
|
|
for (const localName of data.importsNamespace) {
|
|
imported.set(localName, [source, null, localName]);
|
|
}
|
|
}
|
|
for (const [local, data] of metadata.local) {
|
|
let exportMeta = exported.get(local);
|
|
if (!exportMeta) {
|
|
exportMeta = [];
|
|
exported.set(local, exportMeta);
|
|
}
|
|
exportMeta.push(...data.names);
|
|
}
|
|
|
|
const rewriteBindingInitVisitorState = {
|
|
metadata,
|
|
requeueInParent,
|
|
scope: programPath.scope,
|
|
exported
|
|
};
|
|
|
|
programPath.traverse(
|
|
rewriteBindingInitVisitor, rewriteBindingInitVisitorState);
|
|
(0, _helperSimpleAccess.default)(programPath,
|
|
new Set([...Array.from(imported.keys()), ...Array.from(exported.keys())]), false);
|
|
|
|
const rewriteReferencesVisitorState = {
|
|
seen: new WeakSet(),
|
|
metadata,
|
|
requeueInParent,
|
|
scope: programPath.scope,
|
|
imported,
|
|
exported,
|
|
buildImportReference: ([source, importName, localName], identNode) => {
|
|
const meta = metadata.source.get(source);
|
|
if (localName) {
|
|
if (meta.lazy) {
|
|
identNode = callExpression(
|
|
identNode, []);
|
|
}
|
|
return identNode;
|
|
}
|
|
let namespace = identifier(meta.name);
|
|
if (meta.lazy) namespace = callExpression(namespace, []);
|
|
if (importName === "default" && meta.interop === "node-default") {
|
|
return namespace;
|
|
}
|
|
const computed = metadata.stringSpecifiers.has(importName);
|
|
return memberExpression(namespace, computed ? stringLiteral(importName) : identifier(importName), computed);
|
|
}
|
|
};
|
|
programPath.traverse(rewriteReferencesVisitor, rewriteReferencesVisitorState);
|
|
}
|
|
|
|
const rewriteBindingInitVisitor = {
|
|
Scope(path) {
|
|
path.skip();
|
|
},
|
|
ClassDeclaration(path) {
|
|
const {
|
|
requeueInParent,
|
|
exported,
|
|
metadata
|
|
} = this;
|
|
const {
|
|
id
|
|
} = path.node;
|
|
if (!id) throw new Error("Expected class to have a name");
|
|
const localName = id.name;
|
|
const exportNames = exported.get(localName) || [];
|
|
if (exportNames.length > 0) {
|
|
const statement = expressionStatement(
|
|
buildBindingExportAssignmentExpression(metadata, exportNames, identifier(localName), path.scope));
|
|
statement._blockHoist = path.node._blockHoist;
|
|
requeueInParent(path.insertAfter(statement)[0]);
|
|
}
|
|
},
|
|
VariableDeclaration(path) {
|
|
const {
|
|
requeueInParent,
|
|
exported,
|
|
metadata
|
|
} = this;
|
|
Object.keys(path.getOuterBindingIdentifiers()).forEach(localName => {
|
|
const exportNames = exported.get(localName) || [];
|
|
if (exportNames.length > 0) {
|
|
const statement = expressionStatement(
|
|
buildBindingExportAssignmentExpression(metadata, exportNames, identifier(localName), path.scope));
|
|
statement._blockHoist = path.node._blockHoist;
|
|
requeueInParent(path.insertAfter(statement)[0]);
|
|
}
|
|
});
|
|
}
|
|
};
|
|
const buildBindingExportAssignmentExpression = (metadata, exportNames, localExpr, scope) => {
|
|
const exportsObjectName = metadata.exportName;
|
|
for (let currentScope = scope; currentScope != null; currentScope = currentScope.parent) {
|
|
if (currentScope.hasOwnBinding(exportsObjectName)) {
|
|
currentScope.rename(exportsObjectName);
|
|
}
|
|
}
|
|
return (exportNames || []).reduce((expr, exportName) => {
|
|
const {
|
|
stringSpecifiers
|
|
} = metadata;
|
|
const computed = stringSpecifiers.has(exportName);
|
|
return assignmentExpression("=", memberExpression(identifier(exportsObjectName), computed ? stringLiteral(exportName) : identifier(exportName), computed), expr);
|
|
}, localExpr);
|
|
};
|
|
const buildImportThrow = localName => {
|
|
return _template.default.expression.ast`
|
|
(function() {
|
|
throw new Error('"' + '${localName}' + '" is read-only.');
|
|
})()
|
|
`;
|
|
};
|
|
const rewriteReferencesVisitor = {
|
|
ReferencedIdentifier(path) {
|
|
const {
|
|
seen,
|
|
buildImportReference,
|
|
scope,
|
|
imported,
|
|
requeueInParent
|
|
} = this;
|
|
if (seen.has(path.node)) return;
|
|
seen.add(path.node);
|
|
const localName = path.node.name;
|
|
const importData = imported.get(localName);
|
|
if (importData) {
|
|
if (isInType(path)) {
|
|
throw path.buildCodeFrameError(`Cannot transform the imported binding "${localName}" since it's also used in a type annotation. ` + `Please strip type annotations using @babel/preset-typescript or @babel/preset-flow.`);
|
|
}
|
|
const localBinding = path.scope.getBinding(localName);
|
|
const rootBinding = scope.getBinding(localName);
|
|
|
|
if (rootBinding !== localBinding) return;
|
|
const ref = buildImportReference(importData, path.node);
|
|
|
|
ref.loc = path.node.loc;
|
|
if ((path.parentPath.isCallExpression({
|
|
callee: path.node
|
|
}) || path.parentPath.isOptionalCallExpression({
|
|
callee: path.node
|
|
}) || path.parentPath.isTaggedTemplateExpression({
|
|
tag: path.node
|
|
})) && isMemberExpression(ref)) {
|
|
path.replaceWith(sequenceExpression([numericLiteral(0), ref]));
|
|
} else if (path.isJSXIdentifier() && isMemberExpression(ref)) {
|
|
const {
|
|
object,
|
|
property
|
|
} = ref;
|
|
path.replaceWith(jsxMemberExpression(
|
|
jsxIdentifier(object.name),
|
|
jsxIdentifier(property.name)));
|
|
} else {
|
|
path.replaceWith(ref);
|
|
}
|
|
requeueInParent(path);
|
|
|
|
path.skip();
|
|
}
|
|
},
|
|
UpdateExpression(path) {
|
|
const {
|
|
scope,
|
|
seen,
|
|
imported,
|
|
exported,
|
|
requeueInParent,
|
|
buildImportReference
|
|
} = this;
|
|
if (seen.has(path.node)) return;
|
|
seen.add(path.node);
|
|
const arg = path.get("argument");
|
|
|
|
if (arg.isMemberExpression()) return;
|
|
const update = path.node;
|
|
if (arg.isIdentifier()) {
|
|
const localName = arg.node.name;
|
|
|
|
if (scope.getBinding(localName) !== path.scope.getBinding(localName)) {
|
|
return;
|
|
}
|
|
const exportedNames = exported.get(localName);
|
|
const importData = imported.get(localName);
|
|
if ((exportedNames == null ? void 0 : exportedNames.length) > 0 || importData) {
|
|
if (importData) {
|
|
path.replaceWith(assignmentExpression(update.operator[0] + "=", buildImportReference(importData, arg.node), buildImportThrow(localName)));
|
|
} else if (update.prefix) {
|
|
path.replaceWith(buildBindingExportAssignmentExpression(this.metadata, exportedNames, cloneNode(update), path.scope));
|
|
} else {
|
|
const ref = scope.generateDeclaredUidIdentifier(localName);
|
|
path.replaceWith(sequenceExpression([assignmentExpression("=", cloneNode(ref), cloneNode(update)), buildBindingExportAssignmentExpression(this.metadata, exportedNames, identifier(localName), path.scope), cloneNode(ref)]));
|
|
}
|
|
}
|
|
}
|
|
requeueInParent(path);
|
|
path.skip();
|
|
},
|
|
AssignmentExpression: {
|
|
exit(path) {
|
|
const {
|
|
scope,
|
|
seen,
|
|
imported,
|
|
exported,
|
|
requeueInParent,
|
|
buildImportReference
|
|
} = this;
|
|
if (seen.has(path.node)) return;
|
|
seen.add(path.node);
|
|
const left = path.get("left");
|
|
|
|
if (left.isMemberExpression()) return;
|
|
if (left.isIdentifier()) {
|
|
const localName = left.node.name;
|
|
|
|
if (scope.getBinding(localName) !== path.scope.getBinding(localName)) {
|
|
return;
|
|
}
|
|
const exportedNames = exported.get(localName);
|
|
const importData = imported.get(localName);
|
|
if ((exportedNames == null ? void 0 : exportedNames.length) > 0 || importData) {
|
|
_assert(path.node.operator === "=", "Path was not simplified");
|
|
const assignment = path.node;
|
|
if (importData) {
|
|
assignment.left = buildImportReference(importData, left.node);
|
|
assignment.right = sequenceExpression([assignment.right, buildImportThrow(localName)]);
|
|
}
|
|
path.replaceWith(buildBindingExportAssignmentExpression(this.metadata, exportedNames, assignment, path.scope));
|
|
requeueInParent(path);
|
|
}
|
|
} else {
|
|
const ids = left.getOuterBindingIdentifiers();
|
|
const programScopeIds = Object.keys(ids).filter(localName => scope.getBinding(localName) === path.scope.getBinding(localName));
|
|
const id = programScopeIds.find(localName => imported.has(localName));
|
|
if (id) {
|
|
path.node.right = sequenceExpression([path.node.right, buildImportThrow(id)]);
|
|
}
|
|
|
|
const items = [];
|
|
programScopeIds.forEach(localName => {
|
|
const exportedNames = exported.get(localName) || [];
|
|
if (exportedNames.length > 0) {
|
|
items.push(buildBindingExportAssignmentExpression(this.metadata, exportedNames, identifier(localName), path.scope));
|
|
}
|
|
});
|
|
if (items.length > 0) {
|
|
let node = sequenceExpression(items);
|
|
if (path.parentPath.isExpressionStatement()) {
|
|
node = expressionStatement(node);
|
|
node._blockHoist = path.parentPath.node._blockHoist;
|
|
}
|
|
const statement = path.insertAfter(node)[0];
|
|
requeueInParent(statement);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
"ForOfStatement|ForInStatement"(path) {
|
|
const {
|
|
scope,
|
|
node
|
|
} = path;
|
|
const {
|
|
left
|
|
} = node;
|
|
const {
|
|
exported,
|
|
imported,
|
|
scope: programScope
|
|
} = this;
|
|
if (!isVariableDeclaration(left)) {
|
|
let didTransformExport = false,
|
|
importConstViolationName;
|
|
const loopBodyScope = path.get("body").scope;
|
|
for (const name of Object.keys(getOuterBindingIdentifiers(left))) {
|
|
if (programScope.getBinding(name) === scope.getBinding(name)) {
|
|
if (exported.has(name)) {
|
|
didTransformExport = true;
|
|
if (loopBodyScope.hasOwnBinding(name)) {
|
|
loopBodyScope.rename(name);
|
|
}
|
|
}
|
|
if (imported.has(name) && !importConstViolationName) {
|
|
importConstViolationName = name;
|
|
}
|
|
}
|
|
}
|
|
if (!didTransformExport && !importConstViolationName) {
|
|
return;
|
|
}
|
|
path.ensureBlock();
|
|
const bodyPath = path.get("body");
|
|
const newLoopId = scope.generateUidIdentifierBasedOnNode(left);
|
|
path.get("left").replaceWith(variableDeclaration("let", [variableDeclarator(cloneNode(newLoopId))]));
|
|
scope.registerDeclaration(path.get("left"));
|
|
if (didTransformExport) {
|
|
bodyPath.unshiftContainer("body", expressionStatement(assignmentExpression("=", left, newLoopId)));
|
|
}
|
|
if (importConstViolationName) {
|
|
bodyPath.unshiftContainer("body", expressionStatement(buildImportThrow(importConstViolationName)));
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
//# sourceMappingURL=rewrite-live-references.js.map
|