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fixScopeAndIdentifierRanges() — react Function Reference

Architecture documentation for the fixScopeAndIdentifierRanges() function in HIRBuilder.ts from the react codebase.

Function typescript MIRInfrastructure HIR called by 3

Entity Profile

Dependency Diagram

graph TD
  04a5191f_97c5_f799_5b35_df80b526da7f["fixScopeAndIdentifierRanges()"]
  df6865e0_b573_e905_84d6_4eb6b419a888["HIRBuilder.ts"]
  04a5191f_97c5_f799_5b35_df80b526da7f -->|defined in| df6865e0_b573_e905_84d6_4eb6b419a888
  67879f67_c0fc_dc2d_b736_b9213153bc4a["buildReactiveScopeTerminalsHIR()"]
  67879f67_c0fc_dc2d_b736_b9213153bc4a -->|calls| 04a5191f_97c5_f799_5b35_df80b526da7f
  3522f83b_2dff_3c9f_920f_3e428eb62b31["inferEffectDependencies()"]
  3522f83b_2dff_3c9f_920f_3e428eb62b31 -->|calls| 04a5191f_97c5_f799_5b35_df80b526da7f
  876d58c8_bfce_a9d8_22c0_b40cc7e22553["inlineJsxTransform()"]
  876d58c8_bfce_a9d8_22c0_b40cc7e22553 -->|calls| 04a5191f_97c5_f799_5b35_df80b526da7f
  style 04a5191f_97c5_f799_5b35_df80b526da7f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/HIR/HIRBuilder.ts lines 935–950

export function fixScopeAndIdentifierRanges(func: HIR): void {
  for (const [, block] of func.blocks) {
    const terminal = block.terminal;
    if (terminal.kind === 'scope' || terminal.kind === 'pruned-scope') {
      /*
       * Scope ranges should always align to start at the 'scope' terminal
       * and end at the first instruction of the fallthrough block
       */
      const fallthroughBlock = func.blocks.get(terminal.fallthrough)!;
      const firstId =
        fallthroughBlock.instructions[0]?.id ?? fallthroughBlock.terminal.id;
      terminal.scope.range.start = terminal.id;
      terminal.scope.range.end = firstId;
    }
  }
}

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Frequently Asked Questions

What does fixScopeAndIdentifierRanges() do?
fixScopeAndIdentifierRanges() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/HIR/HIRBuilder.ts.
Where is fixScopeAndIdentifierRanges() defined?
fixScopeAndIdentifierRanges() is defined in compiler/packages/babel-plugin-react-compiler/src/HIR/HIRBuilder.ts at line 935.
What calls fixScopeAndIdentifierRanges()?
fixScopeAndIdentifierRanges() is called by 3 function(s): buildReactiveScopeTerminalsHIR, inferEffectDependencies, inlineJsxTransform.

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