PromoteAllInstancedOfPromotedTemporaries Class — react Architecture

Source Code

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PromoteUsedTemporaries.ts lines 109–170

class PromoteAllInstancedOfPromotedTemporaries extends ReactiveFunctionVisitor<State> {
  override visitPlace(_id: InstructionId, place: Place, state: State): void {
    if (
      place.identifier.name === null &&
      state.promoted.has(place.identifier.declarationId)
    ) {
      promoteIdentifier(place.identifier, state);
    }
  }
  override visitLValue(
    _id: InstructionId,
    _lvalue: Place,
    _state: State,
  ): void {
    this.visitPlace(_id, _lvalue, _state);
  }
  traverseScopeIdentifiers(scope: ReactiveScope, state: State): void {
    for (const [, decl] of scope.declarations) {
      if (
        decl.identifier.name === null &&
        state.promoted.has(decl.identifier.declarationId)
      ) {
        promoteIdentifier(decl.identifier, state);
      }
    }
    for (const dep of scope.dependencies) {
      if (
        dep.identifier.name === null &&
        state.promoted.has(dep.identifier.declarationId)
      ) {
        promoteIdentifier(dep.identifier, state);
      }
    }
    for (const reassignment of scope.reassignments) {
      if (
        reassignment.name === null &&
        state.promoted.has(reassignment.declarationId)
      ) {
        promoteIdentifier(reassignment, state);
      }
    }
  }
  override visitScope(scope: ReactiveScopeBlock, state: State): void {
    this.traverseScope(scope, state);
    this.traverseScopeIdentifiers(scope.scope, state);
  }
  override visitPrunedScope(
    scopeBlock: PrunedReactiveScopeBlock,
    state: State,
  ): void {
    this.traversePrunedScope(scopeBlock, state);
    this.traverseScopeIdentifiers(scopeBlock.scope, state);
  }
  override visitReactiveFunctionValue(
    _id: InstructionId,
    _dependencies: Array<Place>,
    fn: ReactiveFunction,
    state: State,
  ): void {
    visitReactiveFunction(fn, this, state);
  }
}