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feat: support fallible results and scoped cleanup

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This commit is contained in:
Valdemar Høgsvig Lorenzen
2026-10-26 12:37:15 +01:00
parent cd64afbb40
commit 9058135326
15 changed files with 1732 additions and 76 deletions
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source/sema/resolve.hon
+18 -2
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@@ -382,6 +382,11 @@ resolve_block proc(state @mut State, scope @mut Scope, id ast.NodeId) void ! (me
if (ast.return_stmt(tree, statement).value) |value| try resolve_expr(state, scope, value)
}
.break_stmt, .continue_stmt: {}
.block_stmt: try resolve_arm(state, scope, ast.statement_block(tree, statement))
.defer_stmt, .errdefer_stmt: {
cleanup :: ast.cleanup_stmt(tree, statement)
try resolve_capture_arm(state, scope, cleanup.body, cleanup.capture)
}
.if_stmt: {
conditional :: ast.if_stmt(tree, statement)
try resolve_expr(state, scope, conditional.condition)
@@ -511,7 +516,7 @@ resolve_expr proc(
match ast.expr_kind(tree, id) {
.literal_int, .literal_float, .literal_bool, .literal_string, .literal_null: {}
.enum_literal: {}
.distinct_type, .alias_expr, .optional_type: try resolve_expr(state, scope, ast.type_operand(tree, id))
.distinct_type, .alias_expr, .optional_type, .try_expr: try resolve_expr(state, scope, ast.type_operand(tree, id))
.enum_type: {
if (ast.enum_type(tree, id).backing) |backing| try resolve_expr(state, scope, backing)
for (0..ast.enum_member_count(tree, id)) |i| {
@@ -534,6 +539,17 @@ resolve_expr proc(
else try resolve_block(state, &arm_scope, arm.body)
}
}
.catch_expr: {
expression :: ast.catch_expr(tree, id)
try resolve_expr(state, scope, expression.operand)
handler_scope := Scope{ names = hashmap.init(state.allocator), parent = scope }
defer hashmap.deinit(&handler_scope.names)
if (expression.capture) |capture| {
try predeclare(state, &handler_scope, capture, ast.node_span(tree, capture))
}
if (expression.handler_is_block) try resolve_block(state, &handler_scope, expression.handler)
else try resolve_expr(state, &handler_scope, expression.handler)
}
.identifier: {
span :: ast.node_span(tree, id)
name :: ast.name_id(tree, id)
@@ -577,7 +593,7 @@ resolve_expr proc(
state.bindings[usize(expression.member)] = value
}
.unary: try resolve_expr(state, scope, ast.unary_expr(tree, id).operand)
.binary: {
.binary, .fallible_type, .sum_type: {
expression :: ast.binary_expr(tree, id)
try resolve_expr(state, scope, expression.left)
try resolve_expr(state, scope, expression.right)