Changes for version 0.01 - 2026-06-20
- First version.
- Lexically-scoped custom binary infix operators, built on core's PL_infix_plugin hook (perl 5.38+), installed via wrap_infix_plugin.
- Declarative import API: use Infix::Custom op => '<glyph>', call => \&sub, prec => '<tier>'; plus the shorthand ('<glyph>' => \&sub, ...).
- Lowering modes: call mode (LHS op RHS -> sub(LHS, RHS)), op mode (binop => '+' lowers to a native binary op, no call overhead), method mode (method => 1: RHS read as a bareword method name via a parse stage, so safe-navigation `$o ?-> meth` works under strict), and a C-level build_op escape hatch (pass a function-pointer IV) for XS authors who want to emit a custom optree.
- import()/unimport() are implemented in XS: argument parsing, the precedence vocabulary, glyph validation, registration and the lexical %^H hint are all done in C; only the bootstrap stays in Perl.
- Precedence by friendly name mapping to core's INFIX_PREC_* ladder; associativity follows the chosen tier.
- Lexical scope and nested rebinding via %^H; an out-of-scope glyph is an ordinary parse error. Longest-match resolution between glyphs.
- Requires perl 5.38+ (the PL_infix_plugin hook); does not install below.
Modules
custom infix operators