validateParsedProgram.h

/*
Copyright 2013-present Barefoot Networks, 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 P4_VALIDATEPARSEDPROGRAM_H_
#define P4_VALIDATEPARSEDPROGRAM_H_
 
#include "ir/ir.h"
#include "ir/visitor.h"
 
namespace P4 {
 
using namespace literals;
 
class ValidateParsedProgram final : public Inspector {
    std::unordered_map<std::pair<const IR::Node *, cstring>, bool> annNames;
 
    void container(const IR::IContainer *type);
    // Make sure that type, apply and constructor parameters are distinct
    void distinctParameters(const IR::TypeParameters *typeParams, const IR::ParameterList *apply,
                            const IR::ParameterList *constr);
 
 public:
    ValidateParsedProgram() { setName("ValidateParsedProgram"); }
    void end_apply(const IR::Node *) override { annNames.clear(); }
    void postorder(const IR::Annotation *annotations) override;
    void postorder(const IR::P4Program *program) override;
    void postorder(const IR::Constant *c) override;
    void postorder(const IR::SwitchStatement *statement) override;
    void postorder(const IR::Method *t) override;
    void postorder(const IR::StructField *f) override;
    void postorder(const IR::ParserState *s) override;
    void postorder(const IR::P4Table *t) override;
    void postorder(const IR::Type_Bits *type) override;
    void postorder(const IR::Type_Varbits *type) override;
    void postorder(const IR::ConstructorCallExpression *expression) override;
    void postorder(const IR::Declaration_Variable *decl) override;
    void postorder(const IR::Declaration_Instance *inst) override;
    void postorder(const IR::Declaration_Constant *decl) override;
    void postorder(const IR::EntriesList *l) override;
    void postorder(const IR::ReturnStatement *statement) override;
    void postorder(const IR::ExitStatement *statement) override;
    void postorder(const IR::Type_Package *package) override { container(package); }
    void postorder(const IR::P4Control *control) override {
        container(control);
        distinctParameters(control->getTypeParameters(), control->getApplyParameters(),
                           control->getConstructorParameters());
    }
    void postorder(const IR::P4Parser *parser) override {
        auto start = parser->states.getDeclaration(IR::ParserState::start);
        if (!start) {
            ::P4::error(ErrorType::ERR_INVALID, "Parser %1% has no 'start' state", parser);
        }
        container(parser);
        distinctParameters(parser->getTypeParameters(), parser->getApplyParameters(),
                           parser->getConstructorParameters());
    }
    void postorder(const IR::Dots *dots) override;
    void postorder(const IR::BreakStatement *s) override;
    void postorder(const IR::ContinueStatement *s) override;
};
 
}  // namespace P4
 
#endif /* P4_VALIDATEPARSEDPROGRAM_H_ */