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carbon-lang/toolchain/check/handle_expr_statement.cpp
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Jon Ross-Perkins 99696b9812 Rename check handlers to HandleParseNode overloads. (#4121)
This is for consistency with #4120. Similar to that, we can use
overloads on the typed NodeId rather than individually named handlers.
There isn't the same caller benefit here though, since the calls from
check.cpp are already boilerplate.
2024-07-12 22:38:06 +00:00

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// 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/check/context.h"
#include "toolchain/check/convert.h"
#include "toolchain/check/handle.h"
#include "toolchain/sem_ir/inst.h"
namespace Carbon::Check {
// TODO: Find a better home for this. We'll likely need it for more than just
// expression statements.
static auto HandleDiscardedExpr(Context& context, SemIR::InstId expr_id)
-> void {
// If we discard an initializing expression, convert it to a value or
// reference so that it has something to initialize.
auto expr = context.insts().Get(expr_id);
Convert(context, context.insts().GetLocId(expr_id), expr_id,
{.kind = ConversionTarget::Discarded, .type_id = expr.type_id()});
// TODO: This will eventually need to do some "do not discard" analysis.
}
auto HandleParseNode(Context& context, Parse::ExprStatementId /*node_id*/)
-> bool {
HandleDiscardedExpr(context, context.node_stack().PopExpr());
return true;
}
} // namespace Carbon::Check