mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
0594a1aac7
Handles tuples (including nested tuples) in the semantic phase of the tool chain. Does not handle tuple element access yet. --------- Co-authored-by: Farzana Ahmed Siddique <fasiddique@google.com> Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
60 lines
2.2 KiB
C++
60 lines
2.2 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"
|
|
#include "toolchain/semantics/semantics_node.h"
|
|
|
|
namespace Carbon {
|
|
|
|
auto SemanticsHandleVariableDeclaration(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
// Handle the optional initializer.
|
|
auto expr_node_id = SemanticsNodeId::Invalid;
|
|
bool has_init =
|
|
context.parse_tree().node_kind(context.node_stack().PeekParseNode()) !=
|
|
ParseNodeKind::PatternBinding;
|
|
if (has_init) {
|
|
expr_node_id = context.node_stack().PopExpression();
|
|
context.node_stack()
|
|
.PopAndDiscardSoloParseNode<ParseNodeKind::VariableInitializer>();
|
|
}
|
|
|
|
// Get the storage and add it to name lookup.
|
|
SemanticsNodeId binding_id =
|
|
context.node_stack().Pop<ParseNodeKind::PatternBinding>();
|
|
auto binding = context.semantics_ir().GetNode(binding_id);
|
|
auto [name_id, storage_id] = binding.GetAsBindName();
|
|
context.AddNameToLookup(binding.parse_node(), name_id, storage_id);
|
|
// If there was an initializer, assign it to storage.
|
|
if (has_init) {
|
|
auto cast_value_id = context.ImplicitAsRequired(
|
|
parse_node, expr_node_id,
|
|
context.semantics_ir().GetNode(storage_id).type_id());
|
|
context.AddNode(SemanticsNode::Assign::Make(
|
|
parse_node, context.semantics_ir().GetNode(cast_value_id).type_id(),
|
|
storage_id, cast_value_id));
|
|
}
|
|
|
|
context.node_stack()
|
|
.PopAndDiscardSoloParseNode<ParseNodeKind::VariableIntroducer>();
|
|
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleVariableIntroducer(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
// No action, just a bracketing node.
|
|
context.node_stack().Push(parse_node);
|
|
return true;
|
|
}
|
|
|
|
auto SemanticsHandleVariableInitializer(SemanticsContext& context,
|
|
ParseTree::Node parse_node) -> bool {
|
|
// No action, just a bracketing node.
|
|
context.node_stack().Push(parse_node);
|
|
return true;
|
|
}
|
|
|
|
} // namespace Carbon
|