Provisional API: This reference documents current compiler behavior. Compatibility is not yet promised.

src/components/raise.x

Raise.

Design notes

A raise records one structured Error. Its rule converts the code to a Symbol and each detail key and value to a Var, promoting a C string literal value to a String first. A value whose type is not immutable is reported and replaced by null, so the translation goes on and fails when it finishes; the runtime rejects what a List or Var detail holds. The compiler lowers the converted raise’s parts in source order and builds their literals when the raise runs.

Each definition precedes the definitions that call it: the compiler settles whether a linked copy reaches a compile-time operation when the copy binds.