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populateMacroTags() — react Function Reference

Architecture documentation for the populateMacroTags() function in MemoizeFbtAndMacroOperandsInSameScope.ts from the react codebase.

Function typescript BabelCompiler Validation called by 1

Entity Profile

Dependency Diagram

graph TD
  29a64630_c3f8_4c5c_20ff_8ad40f36ac81["populateMacroTags()"]
  fb4e4a7f_2a4f_a45a_81e6_48b5748e5365["MemoizeFbtAndMacroOperandsInSameScope.ts"]
  29a64630_c3f8_4c5c_20ff_8ad40f36ac81 -->|defined in| fb4e4a7f_2a4f_a45a_81e6_48b5748e5365
  9f7211c0_d97a_9601_5b29_f9ec90a9b7d9["memoizeFbtAndMacroOperandsInSameScope()"]
  9f7211c0_d97a_9601_5b29_f9ec90a9b7d9 -->|calls| 29a64630_c3f8_4c5c_20ff_8ad40f36ac81
  style 29a64630_c3f8_4c5c_20ff_8ad40f36ac81 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/MemoizeFbtAndMacroOperandsInSameScope.ts lines 112–160

function populateMacroTags(
  fn: HIRFunction,
  macroKinds: Map<Macro, MacroDefinition>,
): Map<IdentifierId, MacroDefinition> {
  const macroTags = new Map<IdentifierId, MacroDefinition>();
  for (const block of fn.body.blocks.values()) {
    for (const instr of block.instructions) {
      const {lvalue, value} = instr;
      switch (value.kind) {
        case 'Primitive': {
          if (typeof value.value === 'string') {
            const macroDefinition = macroKinds.get(value.value);
            if (macroDefinition != null) {
              /*
               * We don't distinguish between tag names and strings, so record
               * all `fbt` string literals in case they are used as a jsx tag.
               */
              macroTags.set(lvalue.identifier.id, macroDefinition);
            }
          }
          break;
        }
        case 'LoadGlobal': {
          let macroDefinition = macroKinds.get(value.binding.name);
          if (macroDefinition != null) {
            macroTags.set(lvalue.identifier.id, macroDefinition);
          }
          break;
        }
        case 'PropertyLoad': {
          if (typeof value.property === 'string') {
            const macroDefinition = macroTags.get(value.object.identifier.id);
            if (macroDefinition != null) {
              const propertyDefinition =
                macroDefinition.properties != null
                  ? (macroDefinition.properties.get(value.property) ??
                    macroDefinition.properties.get('*'))
                  : null;
              const propertyMacro = propertyDefinition ?? macroDefinition;
              macroTags.set(lvalue.identifier.id, propertyMacro);
            }
          }
          break;
        }
      }
    }
  }
  return macroTags;
}

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Defined In

Called By

Source

Frequently Asked Questions

What does populateMacroTags() do?
populateMacroTags() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/MemoizeFbtAndMacroOperandsInSameScope.ts.
Where is populateMacroTags() defined?
populateMacroTags() is defined in compiler/packages/babel-plugin-react-compiler/src/ReactiveScopes/MemoizeFbtAndMacroOperandsInSameScope.ts at line 112.
What calls populateMacroTags()?
populateMacroTags() is called by 1 function(s): memoizeFbtAndMacroOperandsInSameScope.

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