lib/IR/StmtBlock.cpp

//===- StmtBlock.cpp - MLIR Statement Instruction Classes -----------------===//
//
// Copyright 2019 The MLIR Authors.
//
// 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 "mlir/IR/StmtBlock.h"
#include "mlir/IR/MLFunction.h"
#include "mlir/IR/Statements.h"
using namespace mlir;

//===----------------------------------------------------------------------===//
// Statement block
//===----------------------------------------------------------------------===//

Statement *StmtBlock::getParentStmt() const {
  switch (kind) {
  case StmtBlockKind::MLFunc:
    return nullptr;
  case StmtBlockKind::For:
    return cast<ForStmt>(const_cast<StmtBlock *>(this));
  case StmtBlockKind::IfClause:
    return cast<IfClause>(this)->getIf();
  }
}

MLFunction *StmtBlock::findFunction() const {
  StmtBlock *block = const_cast<StmtBlock *>(this);

  while (block->getParentStmt()) {
    block = block->getParentStmt()->getBlock();
    if (!block)
      return nullptr;
  }
  return dyn_cast<MLFunction>(block);
}