extractArchInfo.cpp

/*
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.
*/

#include "extractArchInfo.h"

namespace BMV2 {

using ::Model::Type_Model;
using ::Model::Param_Model;

bool ExtractArchInfo::preorder(const IR::P4Program* program) {
    for (auto decl : program->declarations) {
        if (decl->is<IR::Type_Package>() || decl->is<IR::Type_Extern>() ||
            decl->is<IR::Declaration_MatchKind>()) {
            visit(decl);
        }
    }
    return true;
}

bool ExtractArchInfo::preorder(const IR::Type_Control *node) {
    if (portable_model.controls.size() != 0) {
        P4::Control_Model *control_m = portable_model.controls.back();
        uint32_t paramCounter = 0;
        for (auto param : node->applyParams->parameters) {
            Type_Model paramTypeModel(param->type->toString());
            Param_Model newParam(param->toString(), paramTypeModel, paramCounter++);
            control_m->elems.push_back(newParam);
        }
    }
    LOG3("...control [" << node << " ]");
    return false;
}

bool ExtractArchInfo::preorder(const IR::Type_Parser *node) {
    if (portable_model.parsers.size() != 0) {
        P4::Parser_Model *parser_m = portable_model.parsers.back();
        uint32_t paramCounter = 0;
        for (auto param : *node->applyParams->getEnumerator()) {
            Type_Model paramTypeModel(param->type->toString());
            Param_Model newParam(param->toString(), paramTypeModel, paramCounter++);
            parser_m->elems.push_back(newParam);
            LOG3("...... parser params [ " << param << " ]");
        }
    }
    return false;
}

bool ExtractArchInfo::preorder(const IR::Type_Package *node) {
    for (auto p : node->getConstructorParameters()->parameters) {
        LOG1("package constructor param: " << p);
        auto ptype = typeMap->getType(p);
        if (ptype == nullptr)
            continue;
        if (ptype->is<IR::P4Parser>()) {
            LOG3("new parser model: " << p->toString());
            portable_model.parsers.push_back(new P4::Parser_Model(p->toString()));
            visit(ptype->to<IR::P4Parser>()->type);
        } else if (ptype->is<IR::P4Control>()) {
            LOG3("new control model: " << p->toString());
            portable_model.controls.push_back(new P4::Control_Model(p->toString()));
            visit(ptype->to<IR::P4Control>()->type);
        }
    }
    LOG3("...package [ " << node << " ]");
    return false;
}

bool ExtractArchInfo::preorder(const IR::Type_Extern *node) {
    P4::Extern_Model *extern_m = new P4::Extern_Model(node->toString());
    for (auto method : node->methods) {
        uint32_t paramCounter = 0;
        P4::Method_Model method_m(method->toString());
        for (auto param : *method->type->parameters->getEnumerator()) {
            Type_Model paramTypeModel(param->type->toString());
            Param_Model newParam(param->toString(), paramTypeModel,
                                 paramCounter++);
            method_m.elems.push_back(newParam);
        }
        extern_m->elems.push_back(method_m);
    }
    portable_model.externs.push_back(extern_m);
    LOG3("...extern [ " << node << " ]");
    return false;
}

bool ExtractArchInfo::preorder(const IR::Declaration_MatchKind* kind) {
    for (auto member : kind->members) {
        Type_Model *match_kind = new Type_Model(member->toString());
        portable_model.match_kinds.push_back(match_kind);
        LOG3("... match kind " << match_kind);
    }
    return false;
}

}  // namespace BMV2