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flattenReactiveLoopsHIR() — react Function Reference

Architecture documentation for the flattenReactiveLoopsHIR() function in FlattenReactiveLoopsHIR.ts from the react codebase.

Function typescript BabelCompiler Validation calls 2 called by 1

Entity Profile

Dependency Diagram

graph TD
  034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca["flattenReactiveLoopsHIR()"]
  17d394b5_a235_d9d6_15c9_133daa2aab98["FlattenReactiveLoopsHIR.ts"]
  034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca -->|defined in| 17d394b5_a235_d9d6_15c9_133daa2aab98
  c3bc3875_256f_8f5e_7800_2f9c5bae65eb["runWithEnvironment()"]
  c3bc3875_256f_8f5e_7800_2f9c5bae65eb -->|calls| 034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca
  c447b97e_0b8e_b187_e3a8_4be412d6f495["retainWhere()"]
  034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  d7fde76c_4fd9_feb3_299b_798689f05bc6["assertExhaustive()"]
  034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca -->|calls| d7fde76c_4fd9_feb3_299b_798689f05bc6
  style 034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/FlattenReactiveLoopsHIR.ts lines 18–71

export function flattenReactiveLoopsHIR(fn: HIRFunction): void {
  const activeLoops = Array<BlockId>();
  for (const [, block] of fn.body.blocks) {
    retainWhere(activeLoops, id => id !== block.id);
    const {terminal} = block;
    switch (terminal.kind) {
      case 'do-while':
      case 'for':
      case 'for-in':
      case 'for-of':
      case 'while': {
        activeLoops.push(terminal.fallthrough);
        break;
      }
      case 'scope': {
        if (activeLoops.length !== 0) {
          block.terminal = {
            kind: 'pruned-scope',
            block: terminal.block,
            fallthrough: terminal.fallthrough,
            id: terminal.id,
            loc: terminal.loc,
            scope: terminal.scope,
          } as PrunedScopeTerminal;
        }
        break;
      }
      case 'branch':
      case 'goto':
      case 'if':
      case 'label':
      case 'logical':
      case 'maybe-throw':
      case 'optional':
      case 'pruned-scope':
      case 'return':
      case 'sequence':
      case 'switch':
      case 'ternary':
      case 'throw':
      case 'try':
      case 'unreachable':
      case 'unsupported': {
        break;
      }
      default: {
        assertExhaustive(
          terminal,
          `Unexpected terminal kind \`${(terminal as any).kind}\``,
        );
      }
    }
  }
}

Domain

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Defined In

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Source

Frequently Asked Questions

What does flattenReactiveLoopsHIR() do?
flattenReactiveLoopsHIR() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/FlattenReactiveLoopsHIR.ts.
Where is flattenReactiveLoopsHIR() defined?
flattenReactiveLoopsHIR() is defined in compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/FlattenReactiveLoopsHIR.ts at line 18.
What does flattenReactiveLoopsHIR() call?
flattenReactiveLoopsHIR() calls 2 function(s): assertExhaustive, retainWhere.
What calls flattenReactiveLoopsHIR()?
flattenReactiveLoopsHIR() is called by 1 function(s): runWithEnvironment.

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