llvm/flang/lib/parser/user-state.cc
Tim Keith 18cee3e8e6 [flang] Add copyright notices.
For source files (C++, Fortran, CMake) add copyright and license.
For documentation files add just copyright.

Original-commit: flang-compiler/f18@38381aed83
Reviewed-on: https://github.com/flang-compiler/f18/pull/74
2018-05-01 12:50:34 -07:00

100 lines
2.9 KiB
C++

// Copyright (c) 2018, NVIDIA CORPORATION. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "user-state.h"
#include "basic-parsers.h"
#include "grammar.h"
#include "parse-state.h"
#include "stmt-parser.h"
#include "type-parsers.h"
#include <optional>
namespace Fortran {
namespace parser {
std::optional<Success> StartNewSubprogram::Parse(ParseState &state) {
if (auto ustate = state.userState()) {
ustate->NewSubprogram();
}
return {Success{}};
}
std::optional<CapturedLabelDoStmt::resultType> CapturedLabelDoStmt::Parse(
ParseState &state) {
static constexpr auto parser = statement(indirect(Parser<LabelDoStmt>{}));
auto result = parser.Parse(state);
if (result) {
if (auto ustate = state.userState()) {
ustate->NewDoLabel(std::get<Label>(result->statement->t));
}
}
return result;
}
std::optional<EndDoStmtForCapturedLabelDoStmt::resultType>
EndDoStmtForCapturedLabelDoStmt::Parse(ParseState &state) {
static constexpr auto parser = statement(indirect(Parser<EndDoStmt>{}));
if (auto enddo = parser.Parse(state)) {
if (enddo->label.has_value()) {
if (auto ustate = state.userState()) {
if (!ustate->InNonlabelDoConstruct() &&
ustate->IsDoLabel(enddo->label.value())) {
return enddo;
}
}
}
}
return {};
}
std::optional<Success> EnterNonlabelDoConstruct::Parse(ParseState &state) {
if (auto ustate = state.userState()) {
ustate->EnterNonlabelDoConstruct();
}
return {Success{}};
}
std::optional<Success> LeaveDoConstruct::Parse(ParseState &state) {
if (auto ustate = state.userState()) {
ustate->LeaveDoConstruct();
}
return {Success{}};
}
std::optional<Name> OldStructureComponentName::Parse(ParseState &state) {
if (std::optional<Name> n{name.Parse(state)}) {
if (const auto *ustate = state.userState()) {
if (ustate->IsOldStructureComponent(n->source)) {
return n;
}
}
}
return {};
}
std::optional<DataComponentDefStmt> StructureComponents::Parse(
ParseState &state) {
static constexpr auto stmt = Parser<DataComponentDefStmt>{};
std::optional<DataComponentDefStmt> defs{stmt.Parse(state)};
if (defs.has_value()) {
if (auto ustate = state.userState()) {
for (const auto &decl : std::get<std::list<ComponentDecl>>(defs->t)) {
ustate->NoteOldStructureComponent(std::get<Name>(decl.t).source);
}
}
}
return defs;
}
} // namespace parser
} // namespace Fortran