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https://github.com/carbon-language/carbon-lang.git
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Jon Ross-Perkins
99696b9812
This is for consistency with #4120. Similar to that, we can use overloads on the typed NodeId rather than individually named handlers. There isn't the same caller benefit here though, since the calls from check.cpp are already boilerplate.
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/check/context.h"
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#include "toolchain/check/convert.h"
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#include "toolchain/check/handle.h"
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#include "toolchain/parse/node_kind.h"
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namespace Carbon::Check {
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auto HandleParseNode(Context& /*context*/, Parse::ArrayExprStartId /*node_id*/)
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-> bool {
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return true;
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}
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auto HandleParseNode(Context& context, Parse::ArrayExprSemiId node_id) -> bool {
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context.node_stack().Push(node_id);
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return true;
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}
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auto HandleParseNode(Context& context, Parse::ArrayExprId node_id) -> bool {
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// TODO: Handle array type with undefined bound.
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if (context.node_stack()
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.PopAndDiscardSoloNodeIdIf<Parse::NodeKind::ArrayExprSemi>()) {
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context.node_stack().PopAndIgnore();
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return context.TODO(node_id, "HandleArrayExprWithoutBounds");
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}
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auto bound_inst_id = context.node_stack().PopExpr();
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context.node_stack()
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.PopAndDiscardSoloNodeId<Parse::NodeKind::ArrayExprSemi>();
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auto [element_type_node_id, element_type_inst_id] =
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context.node_stack().PopExprWithNodeId();
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// The array bound must be a constant.
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//
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// TODO: Should we support runtime-phase bounds in cases such as:
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// comptime fn F(n: i32) -> type { return [i32; n]; }
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auto bound_inst = context.constant_values().Get(bound_inst_id);
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if (!bound_inst.is_constant()) {
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CARBON_DIAGNOSTIC(InvalidArrayExpr, Error,
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"Array bound is not a constant.");
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context.emitter().Emit(bound_inst_id, InvalidArrayExpr);
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context.node_stack().Push(node_id, SemIR::InstId::BuiltinError);
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return true;
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}
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context.AddInstAndPush<SemIR::ArrayType>(
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node_id, {.type_id = SemIR::TypeId::TypeType,
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.bound_id = bound_inst_id,
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.element_type_id = ExprAsType(context, element_type_node_id,
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element_type_inst_id)});
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return true;
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}
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} // namespace Carbon::Check
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