feat(rust): add print in OxcCompiler (#281)

Cargo.toml

@@ -10,7 +10,7 @@ license    = "MIT"
 repository = "https://github.com/rolldown-rs/rolldown"
 
 [workspace.dependencies]
-oxc            = { version = "0.3.0", features = ["semantic"] }
+oxc            = { version = "0.3.0" }
 oxc_resolver   = { version = "0.5.1" }
 sugar_path     = "0.0.12"
 tokio          = { version = "1.33.0", default-features = false }

crates/rolldown_oxc/Cargo.toml

@@ -10,5 +10,6 @@ repository.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-oxc      = { workspace = true }
+oxc = { workspace = true, features = ["semantic", "codegen"] }
+
 smallvec = { workspace = true }

crates/rolldown_oxc/src/compiler.rs

@@ -3,6 +3,7 @@ use std::{fmt::Debug, pin::Pin};
 use oxc::{
   allocator::Allocator,
   ast::ast,
+  codegen::{Codegen, CodegenOptions},
   parser::Parser,
   semantic::{Semantic, SemanticBuilder},
   span::SourceType,
@@ -54,5 +55,15 @@ impl OxcCompiler {
     OxcProgram { program, source, allocator }
   }
 
-  pub fn print() {}
+  pub fn print(ast: &OxcProgram) -> String {
+    let codegen = Codegen::<false>::new(ast.source().len(), CodegenOptions);
+    codegen.build(&ast.program)
+  }
+}
+
+#[test]
+fn basic_test() {
+  let ast = OxcCompiler::parse("const a = 1;".to_string(), SourceType::default());
+  let code = OxcCompiler::print(&ast);
+  assert_eq!(code, "const a = 1;\n");
 }