json_last_error() — internals

json_last_error() — internals

Where it lives

• Signature: src/builtins/system/json_last_error.rs
• Lowering: src/codegen/lower_inst/builtins/json.rs:70 (lower_json_last_error)
• Function symbol: lower_json_last_error()

Lowering notes

• Lowers json_last_error() by reading the shared runtime error-code symbol.

Runtime helpers

The following runtime helpers are referenced:

• __rt_json_last_error_msg

Signature summary

function json_last_error(): int

What the type checker enforces

• Arity: takes no arguments.

Eval interpreter (magician)

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

Cross-references

• User reference for json_last_error()