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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>
61 lines
2.2 KiB
C++
61 lines
2.2 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 <utility>
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#include "toolchain/semantics/semantics_context.h"
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namespace Carbon {
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auto SemanticsHandleParenExpression(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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auto value_id = context.node_stack().PopExpression();
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// ParamOrArgStart was called for tuple handling; clean up the ParamOrArg
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// support for non-tuple cases.
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context.ParamOrArgEnd(
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/*for_args=*/true, ParseNodeKind::ParenExpressionOrTupleLiteralStart);
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context.node_stack()
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.PopAndDiscardSoloParseNode<
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ParseNodeKind::ParenExpressionOrTupleLiteralStart>();
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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 SemanticsHandleParenExpressionOrTupleLiteralStart(
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SemanticsContext& context, ParseTree::Node parse_node) -> bool {
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context.node_stack().Push(parse_node);
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context.ParamOrArgStart();
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return true;
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}
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auto SemanticsHandleTupleLiteralComma(SemanticsContext& context,
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ParseTree::Node /*parse_node*/) -> bool {
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context.ParamOrArgComma(/*for_args=*/true);
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return true;
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}
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auto SemanticsHandleTupleLiteral(SemanticsContext& context,
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ParseTree::Node parse_node) -> bool {
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auto refs_id = context.ParamOrArgEnd(
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/*for_args=*/true, ParseNodeKind::ParenExpressionOrTupleLiteralStart);
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context.node_stack()
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.PopAndDiscardSoloParseNode<
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ParseNodeKind::ParenExpressionOrTupleLiteralStart>();
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const auto& node_block = context.semantics_ir().GetNodeBlock(refs_id);
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llvm::SmallVector<SemanticsTypeId> type_ids;
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type_ids.reserve(node_block.size());
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for (auto node : node_block) {
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type_ids.push_back(context.semantics_ir().GetNode(node).type_id());
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}
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auto type_id = context.CanonicalizeTupleType(parse_node, std::move(type_ids));
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auto value_id = context.AddNode(
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SemanticsNode::TupleValue::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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} // namespace Carbon
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