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feat: materialize readonly typed compile-time slices

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Valdemar Høgsvig Lorenzen
2026-10-30 17:02:21 +01:00
parent cc39c96fc0
commit 32a7a1de24
10 changed files with 741 additions and 40 deletions
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source/sema/check/check.hon
+29
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@@ -1301,6 +1301,14 @@ collect_expression proc(state @mut State, id ast.NodeId) void ! (mem.AllocError
try depend(state, value.type, id)
try depend(state, value.value, id)
}
.slice_constant: {
value :: ast.slice_constant(tree, id)
state.cells[usize(id)].fixed = true
state.cells[usize(id)].type = try check_annotation(state, value.type, false)
try collect_expression(state, value.value)
try depend(state, value.type, id)
try depend(state, value.value, id)
}
.try_expr: {
operand :: ast.type_operand(tree, id)
try collect_expression(state, operand)
@@ -2178,6 +2186,27 @@ validate proc(state @mut State, id ast.NodeId) void ! (mem.AllocError | diagnost
if (!descriptor.is_union or descriptor.tag_type.kind != .none)
try fail(state, id, .invalid_operand, ast.node_span(tree, id))
}
.slice_constant: {
value :: ast.slice_constant(tree, id)
type :: state.cells[usize(id)].type
backing :: state.types[usize(value.value)]
if (type.kind == .invalid or backing.kind == .invalid) return
if (
type.kind != .slice or backing.kind != .array
or ast.expr_kind(tree, value.value) != .typed_constant
) {
try fail(state, id, .invalid_operand, ast.node_span(tree, id))
return
}
descriptor :: state.arrays.items[usize(type.array_type)]
elements :: state.arrays.items[usize(backing.array_type)]
if (
descriptor.mutable or elements.mutable
or !same_type(state, descriptor.element, elements.element)
or (descriptor.sentinel != null and elements.len == 0)
or ast.expr_kind(tree, ast.typed_constant(tree, value.value).value) != .array_literal
) try fail(state, id, .invalid_operand, ast.node_span(tree, id))
}
.try_expr, .catch_expr: try validate_fallible_expression(state, id)
.unary: {
expression :: ast.unary_expr(tree, id)