localize.cpp

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/*
 * Copyright 2023 Blue Brain Project, EPFL.
 * See the top-level LICENSE file for details.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#include <catch2/catch_test_macros.hpp>
 
#include "ast/program.hpp"
#include "parser/nmodl_driver.hpp"
#include "test/unit/utils/test_utils.hpp"
#include "visitors/checkparent_visitor.hpp"
#include "visitors/inline_visitor.hpp"
#include "visitors/localize_visitor.hpp"
#include "visitors/nmodl_visitor.hpp"
#include "visitors/symtab_visitor.hpp"
 
using namespace nmodl;
using namespace visitor;
using namespace test;
using namespace test_utils;
 
using nmodl::parser::NmodlDriver;
 
//=============================================================================
// Localizer visitor tests
//=============================================================================
 
std::string run_localize_visitor(const std::string& text) {
    NmodlDriver driver;
    const auto& ast = driver.parse_string(text);
    SymtabVisitor().visit_program(*ast);
    InlineVisitor().visit_program(*ast);
    LocalizeVisitor().visit_program(*ast);
 
    std::stringstream stream;
    NmodlPrintVisitor(stream).visit_program(*ast);
 
    // check that, after visitor rearrangement, parents are still up-to-date
    CheckParentVisitor().check_ast(*ast);
 
    return stream.str();
}
 
 
SCENARIO("Localizer test with single global block", "[visitor][localizer]") {
    GIVEN("Single derivative block with variable definition") {
        static const std::string nmodl_text = R"(
            NEURON {
                RANGE tau
            }
 
            DERIVATIVE states {
                tau = 11.1
                exp(tau)
            }
        )";
 
        static const std::string output_nmodl = R"(
            NEURON {
                RANGE tau
            }
 
            DERIVATIVE states {
                LOCAL tau
                tau = 11.1
                exp(tau)
            }
        )";
 
        THEN("tau variable gets localized") {
            const std::string input = reindent_text(nmodl_text);
            auto expected_result = reindent_text(output_nmodl);
            auto result = run_localize_visitor(input);
            REQUIRE(result == expected_result);
        }
    }
}
 
SCENARIO("Localizer test with use of verbatim block", "[visitor][localizer]") {
    GIVEN("Verbatim block usage in one of the global block") {
        static const std::string nmodl_text = R"(
            NEURON {
                RANGE tau
            }
 
            DERIVATIVE states {
                tau = 11.1
                exp(tau)
            }
 
            BREAKPOINT {
                VERBATIM ENDVERBATIM
            }
        )";
 
        static const std::string output_nmodl = R"(
            NEURON {
                RANGE tau
            }
 
            DERIVATIVE states {
                tau = 11.1
                exp(tau)
            }
 
            BREAKPOINT {
                VERBATIM ENDVERBATIM
            }
        )";
 
        THEN("Localization is disabled") {
            static const std::string input = reindent_text(nmodl_text);
            auto expected_result = reindent_text(output_nmodl);
            auto result = run_localize_visitor(input);
            REQUIRE(result == expected_result);
        }
    }
}
 
 
SCENARIO("Localizer test with multiple global blocks", "[visitor][localizer]") {
    GIVEN("Multiple global blocks with definition of variable") {
        static const std::string nmodl_text = R"(
            NEURON {
                RANGE tau, beta
            }
 
            INITIAL {
                LOCAL tau
                tau = beta
            }
 
            DERIVATIVE states {
                tau = 11.1
                exp(tau)
            }
 
            BREAKPOINT {
                IF (1) {
                    tau = beta
                } ELSE {
                    tau = 11
                }
 
            }
        )";
 
        static const std::string output_nmodl = R"(
            NEURON {
                RANGE tau, beta
            }
 
            INITIAL {
                LOCAL tau
                tau = beta
            }
 
            DERIVATIVE states {
                LOCAL tau
                tau = 11.1
                exp(tau)
            }
 
            BREAKPOINT {
                LOCAL tau
                IF (1) {
                    tau = beta
                } ELSE {
                    tau = 11
                }
            }
        )";
 
        THEN("Localization across multiple blocks is done") {
            const std::string input = reindent_text(nmodl_text);
            auto expected_result = reindent_text(output_nmodl);
            auto result = run_localize_visitor(input);
            REQUIRE(result == expected_result);
        }
    }
 
 
    GIVEN("Two global blocks with definition and use of the variable") {
        static const std::string nmodl_text = R"(
            NEURON {
                RANGE tau
            }
 
            DERIVATIVE states {
                tau = 11.1
            }
 
            BREAKPOINT {
                IF (1) {
                    tau = 22
                } ELSE {
                    tau = exp(tau) + 11
                }
 
            }
        )";
 
        static const std::string output_nmodl = R"(
            NEURON {
                RANGE tau
            }
 
            DERIVATIVE states {
                tau = 11.1
            }
 
            BREAKPOINT {
                IF (1) {
                    tau = 22
                } ELSE {
                    tau = exp(tau)+11
                }
            }
        )";
 
        THEN("Localization is not done due to use of variable") {
            const std::string input = reindent_text(nmodl_text);
            auto expected_result = reindent_text(output_nmodl);
            auto result = run_localize_visitor(input);
            REQUIRE(result == expected_result);
        }
    }
}