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chunk_split() — internals

Compiler internals for chunk_split(): lowering path, type checks, and runtime helpers.

chunk_split() — internals

Where it lives

Lowering notes

  • Uses the runtime_call strategy from the single-source builtin descriptor.
  • Emits the typed EIR target runtime.chunk_split through BuiltinLoweringContext.
  • The backend resolves that typed target through src/codegen/lower_inst/runtime_calls.rs; PHP builtin names do not participate in dispatch.

Semantic descriptor

  • Target strategy: runtime_call
  • Validation: signature
  • Result type source: declared
  • Result ownership: independent
  • Effects: static (1 declared effects)
  • Requirements: static (0 requirements)
  • Callable policy: static_only
  • Target support: macos-aarch64, ios-arm64, ios-sim-arm64, linux-aarch64, linux-x86_64

EIR and runtime boundary

  • Typed EIR target: runtime.chunk_split
  • Backend boundary: src/codegen/lower_inst/runtime_calls.rs resolves the typed target without PHP-name dispatch.

Signature summary

function chunk_split(string $string, int $length = 76, string $separator = '\r\n'): string

What the type checker enforces

  • Arity: takes 1–3 arguments (2 optional).

Eval interpreter (magician)

Cross-references