oxc/crates/oxc_codegen/examples/codegen.rs
Boshen 5c38a0fd69 feat(codegen)!: new code gen API (#3740)
This PR introduces two type alias to avoid the confusing const generic `pub struct Codegen<'a, const MINIFY: bool>`

* CodeGenerator - Code generator without whitespace removal.
* WhitespaceRemover - Code generator with whitespace removal.

Usage is changed to a builder pattern:

```rust
CodeGenerator::new()
  .enable_comment(...)
  .enable_sourcemap(...)
  .build(&program);
```
2024-06-18 15:50:12 +00:00

41 lines
1.2 KiB
Rust

#![allow(clippy::print_stdout)]
use std::{env, path::Path};
use oxc_allocator::Allocator;
use oxc_codegen::{CodeGenerator, WhitespaceRemover};
use oxc_parser::Parser;
use oxc_span::SourceType;
// Instruction:
// 1. create a `test.js`
// 2. run `cargo run -p oxc_codegen --example codegen` or `just example codegen`
fn main() -> std::io::Result<()> {
let name = env::args().nth(1).unwrap_or_else(|| "test.js".to_string());
let path = Path::new(&name);
let source_text = std::fs::read_to_string(path)?;
let source_type = SourceType::from_path(path).unwrap();
let allocator = Allocator::default();
let ret = Parser::new(&allocator, &source_text, source_type).parse();
if !ret.errors.is_empty() {
for error in ret.errors {
let error = error.with_source_code(source_text.clone());
println!("{error:?}");
}
return Ok(());
}
println!("Original:");
println!("{source_text}");
let printed = CodeGenerator::new().build(&ret.program).source_text;
println!("Printed:");
println!("{printed}");
let minified = WhitespaceRemover::new().build(&ret.program).source_text;
println!("Minified:");
println!("{minified}");
Ok(())
}