Visitor Class — react Architecture

Source Code

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/RenameVariables.ts lines 74–123

class Visitor extends ReactiveFunctionVisitor<Scopes> {
  override visitParam(place: Place, state: Scopes): void {
    state.visit(place.identifier);
  }
  override visitLValue(_id: InstructionId, lvalue: Place, state: Scopes): void {
    state.visit(lvalue.identifier);
  }
  override visitPlace(id: InstructionId, place: Place, state: Scopes): void {
    state.visit(place.identifier);
  }
  override visitBlock(block: ReactiveBlock, state: Scopes): void {
    state.enter(() => {
      this.traverseBlock(block, state);
    });
  }

  override visitPrunedScope(
    scopeBlock: PrunedReactiveScopeBlock,
    state: Scopes,
  ): void {
    this.traverseBlock(scopeBlock.instructions, state);
  }

  override visitScope(scope: ReactiveScopeBlock, state: Scopes): void {
    for (const [_, declaration] of scope.scope.declarations) {
      state.visit(declaration.identifier);
    }
    this.traverseScope(scope, state);
  }

  override visitValue(
    id: InstructionId,
    value: ReactiveValue,
    state: Scopes,
  ): void {
    this.traverseValue(id, value, state);
    if (value.kind === 'FunctionExpression' || value.kind === 'ObjectMethod') {
      this.visitHirFunction(value.loweredFunc.func, state);
    }
  }

  override visitReactiveFunctionValue(
    _id: InstructionId,
    _dependencies: Array<Place>,
    _fn: ReactiveFunction,
    _state: Scopes,
  ): void {
    renameVariablesImpl(_fn, this, _state);
  }
}