如何使用开源Typescript编译器代码提取给定Typescript代码的AST？ [英] How to Extract AST of given Typescript code using the open source Typescript compiler code?

问题描述

众所周知，Typescript现在是完全开源的。可在 Tyescript 中找到。我正在构建一个应用程序，它将获取Typescript代码作为输入并输出给定​​代码的AST。为我提供一种提取输入Typescript代码的AST（抽象语法树）的适当方法，而不是对其进行编译并将其转换为Javascript。

As it is known that Typescript is completely opensource now. which is available at Tyescript. I am building an application that will get Typescript code as input and give output the AST of the given code. Provide me a proper way to extract this AST(Abstract Syntax Tree) of input Typescript code rather than comppliling it and converting it into Javascript.

推荐答案

基本代码：

const fileNames = ["C:\\MyFile.ts"];
const compilerOptions: ts.CompilerOptions = {
    // compiler options go here if any...
    // look at ts.CompilerOptions to see what's available
};
const program = ts.createProgram(fileNames, compilerOptions);
const typeChecker = program.getTypeChecker();
const sourceFiles = program.getSourceFiles();

sourceFiles.filter(f => /MyFile\.ts$/.test(f.fileName)).forEach(sourceFile => {
    ts.forEachChild(sourceFile, node => {
        const declaration = node as ts.Declaration;
        if (declaration.name) {
            console.log(declaration.name.getText());
        }
    });
});

因此，如果您提供了 C：\MyFile.ts ，例如：

So if you provided that with a C:\MyFile.ts like:

class MyClass {}
interface MyInterface {}

它将输出 MyClass 和 MyInterface 。

弄清楚除我刚刚显示的内容以外的所有工作。查看和/或帮助您为这项工作正在进行 a>。

Figuring out everything beyond what I've just shown is a lot of work. It might be more beneficial for you to look at and/or help contribute to this work in progress.

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