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PromoteUsedTemporaries.ts — react Source File

Architecture documentation for PromoteUsedTemporaries.ts, a typescript file in the react codebase. 25 imports, 0 dependents.

File typescript BabelCompiler Validation 25 imports 2 functions 4 classes

Entity Profile

Dependency Diagram

graph LR
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6["PromoteUsedTemporaries.ts"]
  e96f281e_f381_272d_2359_3e6a091c9a1d["CompilerError.ts"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> e96f281e_f381_272d_2359_3e6a091c9a1d
  e51fd0d2_bb38_cc97_7763_efe37f300a47["CompilerError"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> e51fd0d2_bb38_cc97_7763_efe37f300a47
  0423f759_97e0_9101_4634_ed555abc5ca9["index.ts"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 0423f759_97e0_9101_4634_ed555abc5ca9
  18a78965_f593_105b_e5e8_07001321c2ec["HIR.ts"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 18a78965_f593_105b_e5e8_07001321c2ec
  bf1aef24_2e0f_0adb_12d8_9e5ba8245644["DeclarationId"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> bf1aef24_2e0f_0adb_12d8_9e5ba8245644
  bd003dbd_e691_524b_0cf4_50e080ffea94["Identifier"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> bd003dbd_e691_524b_0cf4_50e080ffea94
  23767d65_9554_fcd2_f2aa_7de7634389f9["InstructionId"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 23767d65_9554_fcd2_f2aa_7de7634389f9
  c7aaa235_c19e_3530_31c2_911f38eed3e0["Place"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> c7aaa235_c19e_3530_31c2_911f38eed3e0
  02f69dfe_af02_6deb_8891_1b0229142fd1["PrunedReactiveScopeBlock"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 02f69dfe_af02_6deb_8891_1b0229142fd1
  c0555545_1ea3_9d37_62ad_521eafe2daa8["ReactiveFunction"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> c0555545_1ea3_9d37_62ad_521eafe2daa8
  ca9a6820_460e_0b15_8169_3aa4c6503770["ReactiveScope"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> ca9a6820_460e_0b15_8169_3aa4c6503770
  60e40c84_1324_6a2b_a7cf_f69d86f17579["ReactiveInstruction"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 60e40c84_1324_6a2b_a7cf_f69d86f17579
  0fba6722_c385_0076_d75b_47ee3ff87ee3["ReactiveScopeBlock"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 0fba6722_c385_0076_d75b_47ee3ff87ee3
  03931fe0_84fd_a4e9_b75a_03f9d092be95["ReactiveValue"]
  dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 --> 03931fe0_84fd_a4e9_b75a_03f9d092be95
  style dea6b9e7_3c69_6e86_5d64_ba83c7d43ed6 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

import {CompilerError} from '../CompilerError';
import {GeneratedSource} from '../HIR';
import {
  DeclarationId,
  Identifier,
  InstructionId,
  Place,
  PrunedReactiveScopeBlock,
  ReactiveFunction,
  ReactiveScope,
  ReactiveInstruction,
  ReactiveScopeBlock,
  ReactiveValue,
  ScopeId,
  SpreadPattern,
  promoteTemporary,
  promoteTemporaryJsxTag,
  IdentifierId,
} from '../HIR/HIR';
import {ReactiveFunctionVisitor, visitReactiveFunction} from './visitors';
import {eachInstructionValueLValue, eachPatternOperand} from '../HIR/visitors';

/**
 * Phase 2: Promote identifiers which are used in a place that requires a named variable.
 */
class PromoteTemporaries extends ReactiveFunctionVisitor<State> {
  override visitScope(scopeBlock: ReactiveScopeBlock, state: State): void {
    for (const dep of scopeBlock.scope.dependencies) {
      const {identifier} = dep;
      if (identifier.name == null) {
        promoteIdentifier(identifier, state);
      }
    }
    /*
     * This is technically optional. We could prune ReactiveScopes
     * whose outputs are not used in another computation or return
     * value.
     * Many of our current test fixtures do not return a value, so
     * it is better for now to promote (and memoize) every output.
     */
    for (const [, declaration] of scopeBlock.scope.declarations) {
      if (declaration.identifier.name == null) {
        promoteIdentifier(declaration.identifier, state);
      }
    }
    this.traverseScope(scopeBlock, state);
  }

  override visitPrunedScope(
    scopeBlock: PrunedReactiveScopeBlock,
    state: State,
  ): void {
    for (const [, declaration] of scopeBlock.scope.declarations) {
// ... (405 more lines)

Domain

Subdomains

Functions

Classes

Types

Dependencies

Source

Frequently Asked Questions

What does PromoteUsedTemporaries.ts do?
PromoteUsedTemporaries.ts is a source file in the react codebase, written in typescript. It belongs to the BabelCompiler domain, Validation subdomain.
What functions are defined in PromoteUsedTemporaries.ts?
PromoteUsedTemporaries.ts defines 2 function(s): promoteIdentifier, promoteUsedTemporaries.
What does PromoteUsedTemporaries.ts depend on?
PromoteUsedTemporaries.ts imports 25 module(s): CompilerError, CompilerError.ts, DeclarationId, HIR.ts, Identifier, IdentifierId, InstructionId, Place, and 17 more.
Where is PromoteUsedTemporaries.ts in the architecture?
PromoteUsedTemporaries.ts is located at compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/PromoteUsedTemporaries.ts (domain: BabelCompiler, subdomain: Validation, directory: compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes).

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