9abcca345a
Also: - Cleaned up existing tags so they're consistently at the bottom of doc comments where they should be - Cleaned up some unused imports while I was taking a pass over the files - Marked one function `@deprecated` that should be deprecated
122 lines
5.2 KiB
TypeScript
122 lines
5.2 KiB
TypeScript
// Copyright 2016-2018, Pulumi Corporation.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
import * as ts from "typescript";
|
|
import * as utils from "./utils";
|
|
|
|
/** @internal */
|
|
export function rewriteSuperReferences(code: string, isStatic: boolean): string {
|
|
const sourceFile = ts.createSourceFile(
|
|
"", code, ts.ScriptTarget.Latest, true, ts.ScriptKind.TS);
|
|
|
|
// Transform any usages of "super(...)" into "__super.call(this, ...)", any
|
|
// instance usages of "super.xxx" into "__super.prototype.xxx" and any static
|
|
// usages of "super.xxx" into "__super.xxx"
|
|
const transformed = ts.transform(sourceFile, [rewriteSuperCallsWorker]);
|
|
const printer = ts.createPrinter({ newLine: ts.NewLineKind.LineFeed });
|
|
const output = printer.printNode(ts.EmitHint.Unspecified, transformed.transformed[0], sourceFile).trim();
|
|
|
|
return output;
|
|
|
|
function rewriteSuperCallsWorker(transformationContext: ts.TransformationContext) {
|
|
const newNodes = new Set<ts.Node>();
|
|
let firstFunctionDeclaration = true;
|
|
|
|
function visitor(node: ts.Node): ts.Node {
|
|
// Convert the top level function so it doesn't have a name. We want to convert the user
|
|
// function to an anonymous function so that interior references to the same function
|
|
// bind properly. i.e. if we start with "function f() { f(); }" then this gets converted to
|
|
//
|
|
// function __f() {
|
|
// with ({ f: __f }) {
|
|
// return /*f*/() { f(); }
|
|
//
|
|
// This means the inner call properly binds to the *outer* function we create.
|
|
if (firstFunctionDeclaration && ts.isFunctionDeclaration(node)) {
|
|
firstFunctionDeclaration = false;
|
|
const funcDecl = ts.visitEachChild(node, visitor, transformationContext);
|
|
|
|
const text = utils.isLegalMemberName(funcDecl.name!.text)
|
|
? "/*" + funcDecl.name!.text + "*/" : "";
|
|
return ts.updateFunctionDeclaration(
|
|
funcDecl,
|
|
funcDecl.decorators,
|
|
funcDecl.modifiers,
|
|
funcDecl.asteriskToken,
|
|
ts.createIdentifier(text),
|
|
funcDecl.typeParameters,
|
|
funcDecl.parameters,
|
|
funcDecl.type,
|
|
funcDecl.body);
|
|
}
|
|
|
|
if (node.kind === ts.SyntaxKind.SuperKeyword) {
|
|
const newNode = ts.createIdentifier("__super");
|
|
newNodes.add(newNode);
|
|
return newNode;
|
|
}
|
|
else if (ts.isPropertyAccessExpression(node) &&
|
|
node.expression.kind === ts.SyntaxKind.SuperKeyword) {
|
|
|
|
const expr = isStatic
|
|
? ts.createIdentifier("__super")
|
|
: ts.createPropertyAccess(ts.createIdentifier("__super"), "prototype");
|
|
const newNode = ts.updatePropertyAccess(node, expr, node.name);
|
|
newNodes.add(newNode);
|
|
return newNode;
|
|
}
|
|
else if (ts.isElementAccessExpression(node) &&
|
|
node.argumentExpression &&
|
|
node.expression.kind === ts.SyntaxKind.SuperKeyword) {
|
|
|
|
const expr = isStatic
|
|
? ts.createIdentifier("__super")
|
|
: ts.createPropertyAccess(ts.createIdentifier("__super"), "prototype");
|
|
|
|
const newNode = ts.updateElementAccess(
|
|
node, expr, node.argumentExpression);
|
|
newNodes.add(newNode);
|
|
return newNode;
|
|
}
|
|
|
|
// for all other nodes, recurse first (so we update any usages of 'super')
|
|
// below them
|
|
const rewritten = ts.visitEachChild(node, visitor, transformationContext);
|
|
|
|
if (ts.isCallExpression(rewritten) &&
|
|
newNodes.has(rewritten.expression)) {
|
|
|
|
// this was a call to super() or super.x() or super["x"]();
|
|
// the super will already have been transformed to __super or
|
|
// __super.prototype.x or __super.prototype["x"].
|
|
//
|
|
// to that, we have to add the .call(this, ...) call.
|
|
|
|
const argumentsCopy = rewritten.arguments.slice();
|
|
argumentsCopy.unshift(ts.createThis());
|
|
|
|
return ts.updateCall(
|
|
rewritten,
|
|
ts.createPropertyAccess(rewritten.expression, "call"),
|
|
rewritten.typeArguments,
|
|
argumentsCopy);
|
|
}
|
|
|
|
return rewritten;
|
|
}
|
|
|
|
return (node: ts.Node) => ts.visitNode(node, visitor);
|
|
}
|
|
}
|