defaultArguments.h

/*
Copyright 2018 VMware, Inc.
 
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.
*/
 
#ifndef FRONTENDS_P4_DEFAULTARGUMENTS_H_
#define FRONTENDS_P4_DEFAULTARGUMENTS_H_
 
#include "frontends/common/resolveReferences/resolveReferences.h"
#include "frontends/p4/typeChecking/typeChecker.h"
#include "frontends/p4/typeMap.h"
#include "ir/ir.h"
 
namespace P4 {

class DoDefaultArguments : public Transform, public ResolutionContext {
    TypeMap *typeMap;
 
 public:
    explicit DoDefaultArguments(TypeMap *typeMap) : typeMap(typeMap) {
        setName("DoDefaultArguments");
        CHECK_NULL(typeMap);
    }
    const IR::Node *postorder(IR::MethodCallExpression *expression) override;
    const IR::Node *postorder(IR::Declaration_Instance *inst) override;
    const IR::Node *postorder(IR::ConstructorCallExpression *ccc) override;
    const IR::Node *preorder(IR::ActionList *al) override {
        // don't modify the action lists in tables
        prune();
        return al;
    }
};
 
class DefaultArguments : public PassManager {
 public:
    explicit DefaultArguments(TypeMap *typeMap) {
        setName("DefaultArguments");
        passes.push_back(new TypeChecking(nullptr, typeMap));
        passes.push_back(new DoDefaultArguments(typeMap));
        passes.push_back(new ClearTypeMap(typeMap));
        // this may insert casts into the new arguments
        passes.push_back(new TypeInference(typeMap, false));
    }
};
 
}  // namespace P4
 
#endif /* FRONTENDS_P4_DEFAULTARGUMENTS_H_ */