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AliasVisitor Class — react Architecture

Architecture documentation for the AliasVisitor class in PruneInitializationDependencies.ts from the react codebase.

Class typescript BabelCompiler

Entity Profile

Dependency Diagram

graph TD
  5e7d48c5_557f_060b_3b88_ed38a5805056["AliasVisitor"]
  a4218b71_262a_ca43_13e7_98514ab3bd4e["PruneInitializationDependencies.ts"]
  5e7d48c5_557f_060b_3b88_ed38a5805056 -->|defined in| a4218b71_262a_ca43_13e7_98514ab3bd4e
  e1291b8d_d23d_3a82_5ffa_61cb16b82596["visitInstruction()"]
  5e7d48c5_557f_060b_3b88_ed38a5805056 -->|method| e1291b8d_d23d_3a82_5ffa_61cb16b82596

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PruneInitializationDependencies.ts lines 232–271

class AliasVisitor extends ReactiveFunctionVisitor {
  scopeIdentifiers: DisjointSet<IdentifierId> = new DisjointSet<IdentifierId>();
  scopePaths: Map<IdentifierId, Map<PropertyLiteral, IdentifierId>> = new Map();

  override visitInstruction(instr: ReactiveInstruction): void {
    if (
      instr.value.kind === 'StoreLocal' ||
      instr.value.kind === 'StoreContext'
    ) {
      this.scopeIdentifiers.union([
        instr.value.lvalue.place.identifier.id,
        instr.value.value.identifier.id,
      ]);
    } else if (
      instr.value.kind === 'LoadLocal' ||
      instr.value.kind === 'LoadContext'
    ) {
      instr.lvalue &&
        this.scopeIdentifiers.union([
          instr.lvalue.identifier.id,
          instr.value.place.identifier.id,
        ]);
    } else if (instr.value.kind === 'PropertyLoad') {
      instr.lvalue &&
        update(
          this.scopePaths,
          instr.value.object.identifier.id,
          instr.value.property,
          instr.lvalue.identifier.id,
        );
    } else if (instr.value.kind === 'PropertyStore') {
      update(
        this.scopePaths,
        instr.value.object.identifier.id,
        instr.value.property,
        instr.value.value.identifier.id,
      );
    }
  }
}

Domain

Defined In

Source

Frequently Asked Questions

What is the AliasVisitor class?
AliasVisitor is a class in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PruneInitializationDependencies.ts.
Where is AliasVisitor defined?
AliasVisitor is defined in compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PruneInitializationDependencies.ts at line 232.

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