Files
carbon-lang/toolchain/semantics/semantics_node_block_stack.cpp
T
Jon Ross-Perkins 67da700dd5 Split Semantics into Check and SemIR namespaces (#3138)
Splits IR files into SemIR, and logic files into Check. These will be
split into separate directories as part of a later move; the namespaces
are being done first in order to vet the switch, and hopefully make
conflicts a little easier to manage due to the substantial renames.

A lot of this is just automated removal of Semantics prefixes from
names, adding namespace references where needed. A few special-cases
are:

- SemanticsIR -> SemIR::File
- A few things were discussed, like Unit, CompileUnit, or CompiledUnit.
Unit was too vague for chandlerc, and I thought CompileUnit might lead
to incorrect inferences (CompilationUnit would be more precise, but
typically written as SemIR::CompilationUnit which is pretty long). File
seemed to be a short name that we could agree on.
- SemanticsIRFormatter -> SemIR::Formatter
- FormatSemanticsIR -> SemIR::FormatFile
- SemanticsFileTest -> CheckFileTest
- It remains in the Testing namespace, where just "FileTest" might be
too broad a name.
- SemanticsDeclarationNameStack::Context ->
Check::DeclarationNameStack::NameContext
  - This avoids a Check::Context name shadowing.

Changes check_internal.h to include ostream.h to improve finding of
Print/operator<< (otherwise it didn't compile).

This is part of #3070
2023-08-23 22:51:23 +00:00

50 lines
1.5 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_node_block_stack.h"
#include "common/vlog.h"
#include "llvm/ADT/STLExtras.h"
#include "toolchain/semantics/semantics_node.h"
namespace Carbon::Check {
auto NodeBlockStack::Push(SemIR::NodeBlockId id) -> void {
CARBON_VLOG() << name_ << " Push " << stack_.size() << "\n";
CARBON_CHECK(stack_.size() < (1 << 20))
<< "Excessive stack size: likely infinite loop";
stack_.push_back(id);
}
auto NodeBlockStack::PeekForAdd() -> SemIR::NodeBlockId {
CARBON_CHECK(!stack_.empty()) << "no current block";
auto& back = stack_.back();
if (!back.is_valid()) {
back = semantics_ir_->AddNodeBlock();
CARBON_VLOG() << name_ << " Add " << stack_.size() - 1 << ": " << back
<< "\n";
}
return back;
}
auto NodeBlockStack::Pop() -> SemIR::NodeBlockId {
CARBON_CHECK(!stack_.empty()) << "no current block";
auto back = stack_.pop_back_val();
CARBON_VLOG() << name_ << " Pop " << stack_.size() << ": " << back << "\n";
if (!back.is_valid()) {
return SemIR::NodeBlockId::Empty;
}
return back;
}
auto NodeBlockStack::PrintForStackDump(llvm::raw_ostream& output) const
-> void {
output << name_ << ":\n";
for (auto [i, entry] : llvm::enumerate(stack_)) {
output << "\t" << i << ".\t" << entry << "\n";
}
}
} // namespace Carbon::Check