ctype_alpha() — internals

ctype_alpha() — internals

Where it lives

• Signature: src/builtins/string/ctype_alpha.rs
• Lowering: src/codegen/lower_inst/builtins/ctype.rs:20 (lower_ctype_alpha)
• Function symbol: lower_ctype_alpha()

Lowering notes

• Lowers ctype_alpha(string) by checking every byte against ASCII alpha ranges.

Runtime helpers

No direct __rt_* helpers captured — the lowering is inlined or routes through another builtin.

Signature summary

function ctype_alpha(string $text): bool

What the type checker enforces

• Arity: takes exactly 1 argument.

Eval interpreter (magician)

• Declaration: crates/elephc-magician/src/interpreter/builtins/string/ctype_alpha.rs (eval_builtin!)
• Dispatch hooks: direct, values

Cross-references

• User reference for ctype_alpha()