Brummel
21606c9340
- AST: Def::Type mit Ctors; Term::Ctor (Konstruktion) und Term::Match
mit Arm/Pattern. Patterns: Wild, Var, Lit, Ctor { ctor, fields } —
Sub-Patterns im MVP auf Var/Wild beschränkt.
- Typchecker: Type-Registry, ctor_index für O(1)-Resolution, Pattern-
Bindings, Exhaustiveness-Check gegen volle Konstruktormenge plus
Negativ-Tests.
- Codegen: Boxed-Heap-Layout via malloc; Tag in Offset 0, Felder ab
Offset 8 in 8-Byte-Slots. Match lowert zu load tag + switch + Phi
am Join. Default-Block ist unreachable, wenn vom Typchecker geprüft.
- examples/list.ail.json: rekursive Int-Liste mit sum_list via match.
E2E-Test + Exhaustiveness-Tests. 19/19 Tests grün.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
124 lines
3.1 KiB
JSON
124 lines
3.1 KiB
JSON
{
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"schema": "ailang/v0",
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"name": "list",
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"imports": [],
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"defs": [
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{
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"kind": "type",
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"name": "IntList",
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"doc": "Einfach verkettete Int-Liste, boxed.",
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"ctors": [
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{ "name": "Nil", "fields": [] },
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{
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"name": "Cons",
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"fields": [
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{ "k": "con", "name": "Int" },
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{ "k": "con", "name": "IntList" }
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]
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}
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]
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},
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{
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"kind": "fn",
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"name": "sum_list",
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"type": {
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"k": "fn",
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"params": [{ "k": "con", "name": "IntList" }],
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"ret": { "k": "con", "name": "Int" },
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"effects": []
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},
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"params": ["xs"],
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"doc": "Summiert die Elemente einer Int-Liste rekursiv.",
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"body": {
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"t": "match",
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"scrutinee": { "t": "var", "name": "xs" },
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"arms": [
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{
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"pat": { "p": "ctor", "ctor": "Nil", "fields": [] },
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"body": { "t": "lit", "lit": { "kind": "int", "value": 0 } }
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},
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{
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"pat": {
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"p": "ctor",
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"ctor": "Cons",
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"fields": [
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{ "p": "var", "name": "h" },
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{ "p": "var", "name": "t" }
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]
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},
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"body": {
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"t": "app",
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"fn": { "t": "var", "name": "+" },
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"args": [
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{ "t": "var", "name": "h" },
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{
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"t": "app",
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"fn": { "t": "var", "name": "sum_list" },
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"args": [{ "t": "var", "name": "t" }]
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}
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]
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}
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}
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]
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}
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},
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{
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"kind": "fn",
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"name": "main",
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"type": {
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"k": "fn",
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"params": [],
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"ret": { "k": "con", "name": "Unit" },
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"effects": ["IO"]
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},
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"params": [],
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"doc": "Baut [10, 20, 12] und druckt die Summe (42).",
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"body": {
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"t": "let",
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"name": "xs",
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"value": {
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"t": "ctor",
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"type": "IntList",
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"ctor": "Cons",
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"args": [
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{ "t": "lit", "lit": { "kind": "int", "value": 10 } },
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{
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"t": "ctor",
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"type": "IntList",
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"ctor": "Cons",
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"args": [
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{ "t": "lit", "lit": { "kind": "int", "value": 20 } },
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{
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"t": "ctor",
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"type": "IntList",
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"ctor": "Cons",
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"args": [
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{ "t": "lit", "lit": { "kind": "int", "value": 12 } },
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{
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"t": "ctor",
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"type": "IntList",
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"ctor": "Nil",
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"args": []
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}
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]
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}
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]
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}
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]
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},
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"body": {
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"t": "do",
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"op": "io/print_int",
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"args": [
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{
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"t": "app",
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"fn": { "t": "var", "name": "sum_list" },
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"args": [{ "t": "var", "name": "xs" }]
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}
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]
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}
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}
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}
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]
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}
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