feat(transformer): add transform context to all plugins (#2931)

crates/oxc_transformer/src/context.rs

@@ -0,0 +1,37 @@
+use std::{cell::RefCell, mem, rc::Rc};
+
+use oxc_allocator::Allocator;
+use oxc_ast::AstBuilder;
+use oxc_diagnostics::Error;
+use oxc_semantic::Semantic;
+use oxc_span::SourceType;
+
+pub type Ctx<'a> = Rc<TransformCtx<'a>>;
+
+pub struct TransformCtx<'a> {
+    pub ast: AstBuilder<'a>,
+    pub source_type: SourceType,
+    pub semantic: Semantic<'a>,
+    errors: RefCell<Vec<Error>>,
+}
+
+impl<'a> TransformCtx<'a> {
+    pub fn new(allocator: &'a Allocator, source_type: SourceType, semantic: Semantic<'a>) -> Self {
+        Self {
+            ast: AstBuilder::new(allocator),
+            source_type,
+            semantic,
+            errors: RefCell::new(vec![]),
+        }
+    }
+
+    pub fn take_errors(&self) -> Vec<Error> {
+        mem::take(&mut self.errors.borrow_mut())
+    }
+
+    /// Add an Error
+    #[allow(unused)]
+    pub fn error<T: Into<Error>>(&self, error: T) {
+        self.errors.borrow_mut().push(error.into());
+    }
+}

crates/oxc_transformer/src/decorators/mod.rs

@@ -1,26 +1,30 @@
+use std::rc::Rc;
+
 use serde::Deserialize;
 
 use oxc_ast::ast::*;
 
+use crate::context::Ctx;
+
 /// Only `"2023-11"` will be implemented because Babel 8 will only support "2023-11" and "legacy".
 #[derive(Debug, Default, Clone, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct DecoratorsOptions;
 
 /// [proposal-decorators](https://babeljs.io/docs/babel-plugin-proposal-decorators)
-#[derive(Debug, Default)]
+#[allow(unused)]
-pub struct Decorators {
+pub struct Decorators<'a> {
-    #[allow(unused)]
     options: DecoratorsOptions,
+    ctx: Ctx<'a>,
 }
 
-impl Decorators {
+impl<'a> Decorators<'a> {
-    pub fn new(options: DecoratorsOptions) -> Self {
+    pub fn new(options: DecoratorsOptions, ctx: &Ctx<'a>) -> Self {
-        Self { options }
+        Self { options, ctx: Rc::clone(ctx) }
     }
 }
 
 // Transformers
-impl Decorators {
+impl<'a> Decorators<'a> {
     pub fn transform_statement(&mut self, _stmt: &mut Statement<'_>) {}
 }

crates/oxc_transformer/src/lib.rs

@@ -9,11 +9,14 @@
 
 // Core
 mod compiler_assumptions;
-// Plugins: <https://babeljs.io/docs/plugins-list>
+mod context;
+// Presets: <https://babel.dev/docs/presets>
 mod decorators;
 mod react;
 mod typescript;
 
+use std::rc::Rc;
+
 use oxc_allocator::Allocator;
 use oxc_ast::{
     ast::*,
@@ -26,13 +29,12 @@ use oxc_span::SourceType;
 pub use crate::{
     compiler_assumptions::CompilerAssumptions,
     decorators::{Decorators, DecoratorsOptions},
-    react::{
+    react::{React, ReactDisplayName, ReactJsx, ReactJsxSelf, ReactJsxSource, ReactOptions},
-        React, ReactDisplayName, ReactDisplayNameOptions, ReactJsx, ReactJsxSelf, ReactJsxSource,
-        ReactJsxSourceOptions, ReactOptions,
-    },
     typescript::{TypeScript, TypeScriptOptions},
 };
 
+use crate::context::{Ctx, TransformCtx};
+
 #[allow(unused)]
 #[derive(Debug, Default, Clone)]
 pub struct TransformOptions {
@@ -54,15 +56,11 @@ pub struct TransformOptions {
 
 #[allow(unused)]
 pub struct Transformer<'a> {
-    allocator: &'a Allocator,
+    ctx: Ctx<'a>,
-    source_type: SourceType,
-    semantic: Semantic<'a>,
-    options: TransformOptions,
-
     // NOTE: all callbacks must run in order.
-    x0_typescript: TypeScript,
+    x0_typescript: TypeScript<'a>,
-    x1_react: React,
+    x1_react: React<'a>,
-    x2_decorators: Decorators,
+    x2_decorators: Decorators<'a>,
 }
 
 impl<'a> Transformer<'a> {
@@ -72,14 +70,12 @@ impl<'a> Transformer<'a> {
         semantic: Semantic<'a>,
         options: TransformOptions,
     ) -> Self {
+        let ctx = Rc::new(TransformCtx::new(allocator, source_type, semantic));
         Self {
-            allocator,
+            ctx: Rc::clone(&ctx),
-            source_type,
+            x0_typescript: TypeScript::new(options.typescript, &ctx),
-            semantic,
+            x1_react: React::new(options.react, &ctx),
-            options,
+            x2_decorators: Decorators::new(options.decorators, &ctx),
-            x0_typescript: TypeScript::default(),
-            x1_react: React::default(),
-            x2_decorators: Decorators::default(),
         }
     }
 
@@ -88,7 +84,12 @@ impl<'a> Transformer<'a> {
     /// Returns `Vec<Error>` if any errors were collected during the transformation.
     pub fn build(mut self, program: &mut Program<'a>) -> Result<(), Vec<Error>> {
         self.visit_program(program);
-        Ok(())
+        let errors = self.ctx.take_errors();
+        if errors.is_empty() {
+            Ok(())
+        } else {
+            Err(errors)
+        }
     }
 }
 

crates/oxc_transformer/src/react/display_name/mod.rs

@@ -1,8 +1,6 @@
-use serde::Deserialize;
+use std::rc::Rc;
 
-#[derive(Debug, Default, Clone, Deserialize)]
+use crate::context::Ctx;
-#[serde(rename_all = "camelCase")]
-pub struct ReactDisplayNameOptions;
 
 /// [plugin-transform-react-display-name](https://babeljs.io/docs/babel-plugin-transform-react-display-name)
 ///
@@ -12,14 +10,13 @@ pub struct ReactDisplayNameOptions;
 ///
 /// In: `var bar = createReactClass({});`
 /// Out: `var bar = createReactClass({ displayName: "bar" });`
-#[derive(Debug, Default)]
+#[allow(unused)]
-pub struct ReactDisplayName {
+pub struct ReactDisplayName<'a> {
-    #[allow(unused)]
+    ctx: Ctx<'a>,
-    options: ReactDisplayNameOptions,
 }
 
-impl ReactDisplayName {
+impl<'a> ReactDisplayName<'a> {
-    pub fn new(options: ReactDisplayNameOptions) -> Self {
+    pub fn new(ctx: &Ctx<'a>) -> Self {
-        Self { options }
+        Self { ctx: Rc::clone(ctx) }
     }
 }

crates/oxc_transformer/src/react/jsx/mod.rs

@@ -1,3 +1,7 @@
+use std::rc::Rc;
+
+use crate::context::Ctx;
+
 pub use super::options::ReactOptions;
 
 /// [plugin-transform-react-jsx](https://babeljs.io/docs/babel-plugin-transform-react-jsx)
@@ -13,14 +17,14 @@ pub use super::options::ReactOptions;
 ///
 /// * <https://babeljs.io/docs/babel-plugin-transform-react-jsx>
 /// * <https://github.com/babel/babel/tree/main/packages/babel-helper-builder-react-jsx>
-#[derive(Debug, Default)]
+#[allow(unused)]
-pub struct ReactJsx {
+pub struct ReactJsx<'a> {
-    #[allow(unused)]
     options: ReactOptions,
+    ctx: Ctx<'a>,
 }
 
-impl ReactJsx {
+impl<'a> ReactJsx<'a> {
-    pub fn new(options: ReactOptions) -> Self {
+    pub fn new(options: ReactOptions, ctx: &Ctx<'a>) -> Self {
-        Self { options }
+        Self { options, ctx: Rc::clone(ctx) }
     }
 }

crates/oxc_transformer/src/react/jsx_self/mod.rs

@@ -1,8 +1,6 @@
-use serde::Deserialize;
+use std::rc::Rc;
 
-#[derive(Debug, Default, Clone, Deserialize)]
+use crate::context::Ctx;
-#[serde(rename_all = "camelCase")]
-pub struct ReactJsxSelfOptions;
 
 /// [plugin-transform-react-jsx-self](https://babeljs.io/docs/babel-plugin-transform-react-jsx-self)
 ///
@@ -12,14 +10,13 @@ pub struct ReactJsxSelfOptions;
 ///
 /// In: `<sometag />`
 /// Out: `<sometag __self={this} />`
-#[derive(Debug, Default)]
+#[allow(unused)]
-pub struct ReactJsxSelf {
+pub struct ReactJsxSelf<'a> {
-    #[allow(unused)]
+    ctx: Ctx<'a>,
-    options: ReactJsxSelfOptions,
 }
 
-impl ReactJsxSelf {
+impl<'a> ReactJsxSelf<'a> {
-    pub fn new(options: ReactJsxSelfOptions) -> Self {
+    pub fn new(ctx: &Ctx<'a>) -> Self {
-        Self { options }
+        Self { ctx: Rc::clone(ctx) }
     }
 }

crates/oxc_transformer/src/react/jsx_source/mod.rs

@@ -1,18 +1,15 @@
-use serde::Deserialize;
+use std::rc::Rc;
 
-#[derive(Debug, Default, Clone, Deserialize)]
+use crate::context::Ctx;
-#[serde(rename_all = "camelCase")]
-pub struct ReactJsxSourceOptions;
 
 /// [plugin-transform-react-jsx-source](https://babeljs.io/docs/babel-plugin-transform-react-jsx-source)
-#[derive(Debug, Default)]
+#[allow(unused)]
-pub struct ReactJsxSource {
+pub struct ReactJsxSource<'a> {
-    #[allow(unused)]
+    ctx: Ctx<'a>,
-    options: ReactJsxSourceOptions,
 }
 
-impl ReactJsxSource {
+impl<'a> ReactJsxSource<'a> {
-    pub fn new(options: ReactJsxSourceOptions) -> Self {
+    pub fn new(ctx: &Ctx<'a>) -> Self {
-        Self { options }
+        Self { ctx: Rc::clone(ctx) }
     }
 }

crates/oxc_transformer/src/react/mod.rs

@@ -4,14 +4,15 @@ mod jsx_self;
 mod jsx_source;
 mod options;
 
+use std::rc::Rc;
+
 use oxc_ast::ast::*;
 
+use crate::context::Ctx;
+
 pub use self::{
-    display_name::{ReactDisplayName, ReactDisplayNameOptions},
+    display_name::ReactDisplayName, jsx::ReactJsx, jsx_self::ReactJsxSelf,
-    jsx::ReactJsx,
+    jsx_source::ReactJsxSource, options::ReactOptions,
-    jsx_self::{ReactJsxSelf, ReactJsxSelfOptions},
-    jsx_source::{ReactJsxSource, ReactJsxSourceOptions},
-    options::ReactOptions,
 };
 
 /// [Preset React](https://babel.dev/docs/babel-preset-react)
@@ -22,40 +23,31 @@ pub use self::{
 /// * [plugin-transform-react-jsx-self](https://babeljs.io/docs/babel-plugin-transform-react-jsx-self)
 /// * [plugin-transform-react-jsx](https://babeljs.io/docs/babel-plugin-transform-react-jsx)
 /// * [plugin-transform-react-display-name](https://babeljs.io/docs/babel-plugin-transform-react-display-name)
-#[derive(Default)]
+#[allow(unused)]
-pub struct React {
+pub struct React<'a> {
-    jsx: ReactJsx,
+    ctx: Ctx<'a>,
-    jsx_self: ReactJsxSelf,
+    jsx: ReactJsx<'a>,
-    jsx_source: ReactJsxSource,
+    jsx_self: ReactJsxSelf<'a>,
-    display_name: ReactDisplayName,
+    jsx_source: ReactJsxSource<'a>,
+    display_name: ReactDisplayName<'a>,
 }
 
 // Constructors
-impl React {
+impl<'a> React<'a> {
-    pub fn new(&mut self, options: ReactOptions) -> &mut Self {
+    pub fn new(options: ReactOptions, ctx: &Ctx<'a>) -> Self {
-        self.jsx = ReactJsx::new(options);
+        Self {
-        self
+            ctx: Rc::clone(ctx),
-    }
+            jsx: ReactJsx::new(options, ctx),
-
+            jsx_self: ReactJsxSelf::new(ctx),
-    pub fn with_jsx_self(&mut self, options: ReactJsxSelfOptions) -> &mut Self {
+            jsx_source: ReactJsxSource::new(ctx),
-        self.jsx_self = ReactJsxSelf::new(options);
+            display_name: ReactDisplayName::new(ctx),
-        self
+        }
-    }
-
-    pub fn with_jsx_source(&mut self, options: ReactJsxSourceOptions) -> &mut Self {
-        self.jsx_source = ReactJsxSource::new(options);
-        self
-    }
-
-    pub fn with_display_name(&mut self, options: ReactDisplayNameOptions) -> &mut Self {
-        self.display_name = ReactDisplayName::new(options);
-        self
     }
 }
 
 // Transformers
-impl React {
+impl<'a> React<'a> {
-    pub fn transform_expression(&mut self, expr: &mut Expression<'_>) {
+    pub fn transform_expression(&mut self, expr: &mut Expression<'a>) {
         match expr {
             Expression::JSXElement(_e) => {
                 // *expr = unimplemented!();

crates/oxc_transformer/src/typescript/mod.rs

@@ -1,7 +1,11 @@
+use std::rc::Rc;
+
 use serde::Deserialize;
 
 use oxc_ast::ast::*;
 
+use crate::context::Ctx;
+
 #[derive(Debug, Default, Clone, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct TypeScriptOptions;
@@ -27,19 +31,19 @@ pub struct TypeScriptOptions;
 ///
 /// In:  `const x: number = 0;`
 /// Out: `const x = 0;`
-#[derive(Debug, Default)]
+#[allow(unused)]
-pub struct TypeScript {
+pub struct TypeScript<'a> {
-    #[allow(unused)]
     options: TypeScriptOptions,
+    ctx: Ctx<'a>,
 }
 
-impl TypeScript {
+impl<'a> TypeScript<'a> {
-    pub fn new(options: TypeScriptOptions) -> Self {
+    pub fn new(options: TypeScriptOptions, ctx: &Ctx<'a>) -> Self {
-        Self { options }
+        Self { options, ctx: Rc::clone(ctx) }
     }
 }
 
 // Transformers
-impl TypeScript {
+impl<'a> TypeScript<'a> {
-    pub fn transform_statement(&mut self, _stmt: &mut Statement<'_>) {}
+    pub fn transform_statement(&mut self, _stmt: &mut Statement<'a>) {}
 }