mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 15:35:53 +01:00
Jon Ross-Perkins
43065a1257
This adds a distinction between Unused and SoloParseNode, rather than equating the two. This is intended to help identify nodes which are getting pushed but maybe don't need to be. Not totally done because I want to adjust declaration name handling due to a quirk with how it mixes Name with Expression, but almost done. Once that's done the type punning will be completely gone.
119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
|
|
// Exceptions. See /LICENSE for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
|
|
#include "toolchain/semantics/semantics_context.h"
|
|
|
|
namespace Carbon {
|
|
|
|
auto SemanticsHandleStructComma(SemanticsContext& context,
|
|
ParseTree::Node /*parse_node*/) -> bool {
|
|
context.ParamOrArgComma(
|
|
/*for_args=*/context.parse_tree().node_kind(
|
|
context.node_stack().PeekParseNode()) !=
|
|
ParseNodeKind::StructFieldType);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleStructFieldDesignator(SemanticsContext& context,
|
|
ParseTree::Node /*parse_node*/)
|
|
-> bool {
|
|
// This leaves the designated name on top because the `.` isn't interesting.
|
|
CARBON_CHECK(
|
|
context.parse_tree().node_kind(context.node_stack().PeekParseNode()) ==
|
|
ParseNodeKind::Name);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleStructFieldType(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
auto [type_node, type_id] = context.node_stack().PopExpressionWithParseNode();
|
|
SemanticsTypeId cast_type_id = context.ExpressionAsType(type_node, type_id);
|
|
|
|
auto [name_node, name_id] =
|
|
context.node_stack().PopWithParseNode<ParseNodeKind::Name>();
|
|
|
|
context.AddNode(
|
|
SemanticsNode::StructTypeField::Make(name_node, cast_type_id, name_id));
|
|
context.node_stack().Push(parse_node);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleStructFieldUnknown(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
return context.TODO(parse_node, "HandleStructFieldUnknown");
|
|
}
|
|
|
|
auto SemanticsHandleStructFieldValue(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
auto [value_parse_node, value_node_id] =
|
|
context.node_stack().PopExpressionWithParseNode();
|
|
SemanticsStringId name_id = context.node_stack().Pop<ParseNodeKind::Name>();
|
|
|
|
// Store the name for the type.
|
|
auto type_block_id = context.args_type_info_stack().PeekForAdd();
|
|
context.semantics_ir().AddNode(
|
|
type_block_id,
|
|
SemanticsNode::StructTypeField::Make(
|
|
parse_node, context.semantics_ir().GetNode(value_node_id).type_id(),
|
|
name_id));
|
|
|
|
// Push the value back on the stack as an argument.
|
|
context.node_stack().Push(parse_node, value_node_id);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleStructLiteral(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
auto refs_id = context.ParamOrArgEnd(
|
|
/*for_args=*/true, ParseNodeKind::StructLiteralOrStructTypeLiteralStart);
|
|
|
|
context.PopScope();
|
|
context.node_stack()
|
|
.PopAndDiscardSoloParseNode<
|
|
ParseNodeKind::StructLiteralOrStructTypeLiteralStart>();
|
|
auto type_block_id = context.args_type_info_stack().Pop();
|
|
|
|
auto type_id = context.CanonicalizeStructType(parse_node, type_block_id);
|
|
|
|
auto value_id = context.AddNode(
|
|
SemanticsNode::StructValue::Make(parse_node, type_id, refs_id));
|
|
context.node_stack().Push(parse_node, value_id);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleStructLiteralOrStructTypeLiteralStart(
|
|
SemanticsContext& context, ParseTree::Node parse_node) -> bool {
|
|
context.PushScope();
|
|
context.node_stack().Push(parse_node);
|
|
// At this point we aren't sure whether this will be a value or type literal,
|
|
// so we push onto args irrespective. It just won't be used for a type
|
|
// literal.
|
|
context.args_type_info_stack().Push();
|
|
context.ParamOrArgStart();
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleStructTypeLiteral(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
auto refs_id = context.ParamOrArgEnd(
|
|
/*for_args=*/false, ParseNodeKind::StructLiteralOrStructTypeLiteralStart);
|
|
|
|
context.PopScope();
|
|
context.node_stack()
|
|
.PopAndDiscardSoloParseNode<
|
|
ParseNodeKind::StructLiteralOrStructTypeLiteralStart>();
|
|
// This is only used for value literals.
|
|
context.args_type_info_stack().Pop();
|
|
|
|
CARBON_CHECK(refs_id != SemanticsNodeBlockId::Empty)
|
|
<< "{} is handled by StructLiteral.";
|
|
|
|
auto type_id = context.CanonicalizeStructType(parse_node, refs_id);
|
|
context.node_stack().Push(parse_node,
|
|
context.semantics_ir().GetType(type_id));
|
|
return true;
|
|
}
|
|
|
|
} // namespace Carbon
|