Home  >  Article  >  Backend Development  >  How To Generate Go Source Code From An AST?

How To Generate Go Source Code From An AST?

Susan Sarandon
Susan SarandonOriginal
2024-11-01 06:54:02433browse

How To Generate Go Source Code From An AST?

Generating Go Source Code

You have inquired about generating Go source code. The go/parser package provides the functionality to generate an AST (Abstract Syntax Tree) from a Go source file. However, you have expressed difficulty in generating Go source code from the AST.

Fortunately, the go/printer package offers a solution to this problem. By utilizing this package, you can effortlessly convert an AST back into its source code form.

Consider the example below (adapted from another source):

<code class="go">package main

import (
        "go/parser"
        "go/printer"
        "go/token"
        "os"
)

func main() {
        // src represents the input source code for which we want to print the AST.
        src := `
package main
func main() {
        println("Hello, World!")
}
`

        // Create the AST by parsing src.
        fset := token.NewFileSet() // positions are relative to fset
        f, err := parser.ParseFile(fset, "", src, 0)
        if err != nil {
                panic(err)
        }

        printer.Fprint(os.Stdout, fset, f)

}</code>

Executing this example will produce the following output:

package main

func main() {
        println("Hello, World!")
}

This demonstrates the effective use of the go/printer package in converting an AST back into its source code representation.

The above is the detailed content of How To Generate Go Source Code From An AST?. For more information, please follow other related articles on the PHP Chinese website!

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn