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https://github.com/carbon-language/carbon-lang.git
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josh11b
11ca083855
Part of switching to the [abbreviations we've decided to use](https://docs.google.com/document/d/1RRYMm42osyqhI2LyjrjockYCutQ5dOf8Abu50kTrkX0/edit?resourcekey=0-kHyqOESbOHmzZphUbtLrTw#heading=h.pph7i5m5un7q). I will rename files in a follow-up PR.
56 lines
2.0 KiB
C++
56 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/parse/node_kind.h"
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#include "toolchain/sem_ir/inst.h"
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#include "toolchain/sem_ir/inst_kind.h"
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namespace Carbon::Check {
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auto HandleArrayExprStart(Context& /*context*/, Parse::Node /*parse_node*/)
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-> bool {
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return true;
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}
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auto HandleArrayExprSemi(Context& context, Parse::Node parse_node) -> bool {
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context.node_stack().Push(parse_node);
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return true;
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}
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auto HandleArrayExpr(Context& context, Parse::Node parse_node) -> bool {
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// TODO: Handle array type with undefined bound.
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if (context.parse_tree().node_kind(context.node_stack().PeekParseNode()) ==
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Parse::NodeKind::ArrayExprSemi) {
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context.node_stack().PopAndIgnore();
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context.node_stack().PopAndIgnore();
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return context.TODO(parse_node, "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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.PopAndDiscardSoloParseNode<Parse::NodeKind::ArrayExprSemi>();
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auto element_type_inst_id = context.node_stack().PopExpr();
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auto bound_inst = context.insts().Get(bound_inst_id);
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if (auto literal = bound_inst.TryAs<SemIR::IntegerLiteral>()) {
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const auto& bound_value = context.integers().Get(literal->integer_id);
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// TODO: Produce an error if the array type is too large.
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if (bound_value.getActiveBits() <= 64) {
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context.AddInstAndPush(
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parse_node,
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SemIR::ArrayType{
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parse_node, SemIR::TypeId::TypeType, bound_inst_id,
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ExprAsType(context, parse_node, element_type_inst_id)});
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return true;
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}
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}
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CARBON_DIAGNOSTIC(InvalidArrayExpr, Error, "Invalid array expression.");
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context.emitter().Emit(parse_node, InvalidArrayExpr);
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context.node_stack().Push(parse_node, SemIR::InstId::BuiltinError);
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return true;
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}
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} // namespace Carbon::Check
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