mirror of
https://github.com/danbulant/oxc
synced 2026-05-25 04:42:10 +00:00
27681951e1
1. add a `test.js` file to the project root:
```js
class A extends B {
constructor() {
try {
super();
} finally {
this.a;
}
}
}
```
2. run:
```bash
$ cargo run -p oxc_semantic --example simple
Compiling oxc_semantic v0.5.0 (/home/tzvipm/src/github.com/tzvipm/oxc/crates/oxc_semantic)
Finished dev [unoptimized + debuginfo] target(s) in 32.07s
Running `target/debug/examples/simple`
Wrote AST to: test.ast.txt
Wrote CFG blocks to: test.cfg.txt
Wrote CFG dot diagram to: test.dot
```
3. resulting graph from .dot file:
39 lines
1.2 KiB
Rust
39 lines
1.2 KiB
Rust
use std::{env, path::Path, sync::Arc};
|
|
|
|
use itertools::Itertools;
|
|
use oxc_allocator::Allocator;
|
|
use oxc_parser::Parser;
|
|
use oxc_semantic::SemanticBuilder;
|
|
use oxc_span::SourceType;
|
|
|
|
// Instruction:
|
|
// create a `test.js`,
|
|
// run `cargo run -p oxc_semantic --example simple`
|
|
// or `just watch "run -p oxc_semantic --example simple"`
|
|
|
|
fn main() {
|
|
let name = env::args().nth(1).unwrap_or_else(|| "test.js".to_string());
|
|
let path = Path::new(&name);
|
|
let source_text =
|
|
Arc::new(std::fs::read_to_string(path).unwrap_or_else(|_| panic!("{name} not found")));
|
|
let allocator = Allocator::default();
|
|
let source_type = SourceType::from_path(path).unwrap();
|
|
let ret = Parser::new(&allocator, &source_text, source_type).parse();
|
|
|
|
let program = allocator.alloc(ret.program);
|
|
|
|
let semantic = SemanticBuilder::new(&source_text, source_type)
|
|
.with_check_syntax_error(true)
|
|
.with_trivias(ret.trivias)
|
|
.build(program);
|
|
|
|
if !semantic.errors.is_empty() {
|
|
let error_message: String = semantic
|
|
.errors
|
|
.into_iter()
|
|
.map(|error| error.with_source_code(Arc::clone(&source_text)).to_string())
|
|
.join("\n\n");
|
|
|
|
panic!("Semantic analysis failed:\n\n{error_message}",);
|
|
}
|
|
}
|