mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 10:45:00 +01:00
Richard Smith
f389844893
The speculative insertion of StubReferences after elements in an argument list turned out to not be necessary, because we decided we want to insert per-argument initialization steps after all arguments are evaluated, rather than interleaving them. The StubReferences we insert are causing some minor code complexity, so remove them. We still create StubReferences when performing patch-ups of already-emitted code, but we no longer ever need to look through them when determining whether an initializer was a literal or when evaluating a type expression.
107 lines
3.7 KiB
C++
107 lines
3.7 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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namespace Carbon::Check {
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auto HandleStructComma(Context& context, Parse::Node /*parse_node*/) -> bool {
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context.ParamOrArgComma();
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return true;
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}
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auto HandleStructFieldDesignator(Context& context, Parse::Node /*parse_node*/)
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-> bool {
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// This leaves the designated name on top because the `.` isn't interesting.
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CARBON_CHECK(
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context.parse_tree().node_kind(context.node_stack().PeekParseNode()) ==
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Parse::NodeKind::Name);
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return true;
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}
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auto HandleStructFieldType(Context& context, Parse::Node parse_node) -> bool {
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auto [type_node, type_id] = context.node_stack().PopExpressionWithParseNode();
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SemIR::TypeId cast_type_id = context.ExpressionAsType(type_node, type_id);
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auto [name_node, name_id] =
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context.node_stack().PopWithParseNode<Parse::NodeKind::Name>();
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context.AddNodeAndPush(parse_node, SemIR::Node::StructTypeField::Make(
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name_node, name_id, cast_type_id));
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return true;
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}
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auto HandleStructFieldUnknown(Context& context, Parse::Node parse_node)
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-> bool {
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return context.TODO(parse_node, "HandleStructFieldUnknown");
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}
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auto HandleStructFieldValue(Context& context, Parse::Node parse_node) -> bool {
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auto [value_parse_node, value_node_id] =
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context.node_stack().PopExpressionWithParseNode();
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SemIR::StringId name_id = context.node_stack().Pop<Parse::NodeKind::Name>();
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// Store the name for the type.
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context.args_type_info_stack().AddNode(SemIR::Node::StructTypeField::Make(
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parse_node, name_id,
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context.semantics_ir().GetNode(value_node_id).type_id()));
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// Push the value back on the stack as an argument.
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context.node_stack().Push(parse_node, value_node_id);
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return true;
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}
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auto HandleStructLiteral(Context& context, Parse::Node parse_node) -> bool {
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auto refs_id = context.ParamOrArgEnd(
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Parse::NodeKind::StructLiteralOrStructTypeLiteralStart);
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context.PopScope();
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context.node_stack()
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.PopAndDiscardSoloParseNode<
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Parse::NodeKind::StructLiteralOrStructTypeLiteralStart>();
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auto type_block_id = context.args_type_info_stack().Pop();
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auto type_id = context.CanonicalizeStructType(parse_node, type_block_id);
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auto value_id = context.AddNode(
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SemIR::Node::StructLiteral::Make(parse_node, type_id, refs_id));
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context.node_stack().Push(parse_node, value_id);
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return true;
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}
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auto HandleStructLiteralOrStructTypeLiteralStart(Context& context,
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Parse::Node parse_node)
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-> bool {
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context.PushScope();
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context.node_stack().Push(parse_node);
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// At this point we aren't sure whether this will be a value or type literal,
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// so we push onto args irrespective. It just won't be used for a type
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// literal.
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context.args_type_info_stack().Push();
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context.ParamOrArgStart();
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return true;
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}
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auto HandleStructTypeLiteral(Context& context, Parse::Node parse_node) -> bool {
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auto refs_id = context.ParamOrArgEnd(
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Parse::NodeKind::StructLiteralOrStructTypeLiteralStart);
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context.PopScope();
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context.node_stack()
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.PopAndDiscardSoloParseNode<
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Parse::NodeKind::StructLiteralOrStructTypeLiteralStart>();
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// This is only used for value literals.
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context.args_type_info_stack().Pop();
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CARBON_CHECK(refs_id != SemIR::NodeBlockId::Empty)
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<< "{} is handled by StructLiteral.";
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context.AddNodeAndPush(parse_node,
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SemIR::Node::StructType::Make(
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parse_node, SemIR::TypeId::TypeType, refs_id));
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return true;
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}
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} // namespace Carbon::Check
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