Will Hawkins
125 lines
3.5 KiB
Swift
125 lines
3.5 KiB
Swift
// p4rse, Copyright 2026, Will Hawkins
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//
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// This file is part of p4rse.
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//
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// This file is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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import Common
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import Foundation
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import Macros
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import P4Lang
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import P4Runtime
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import SwiftTreeSitter
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import Testing
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import TreeSitter
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import TreeSitterP4
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@testable import P4Compiler
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public struct Return5: P4FFI {
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public func execute(execution: Common.ProgramExecution) -> (
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Common.ControlFlow, Common.ProgramExecution
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) {
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return (ControlFlow.Return(P4Value(P4IntValue(withValue: 5))), execution)
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}
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public func parameters() -> ParameterList {
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return ParameterList()
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}
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public func type() -> Common.P4Type {
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return P4Type(
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FunctionDeclaration(
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named: Identifier(name: "externally"), ofType: P4Type(P4Int()),
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withParameters: ParameterList(), withBody: .none?))
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}
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public init() {}
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}
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public struct Return6: P4FFI {
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public func execute(execution: Common.ProgramExecution) -> (
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Common.ControlFlow, Common.ProgramExecution
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) {
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return (ControlFlow.Return(P4Value(P4IntValue(withValue: 6))), execution)
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}
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public func parameters() -> ParameterList {
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return ParameterList()
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}
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public func type() -> Common.P4Type {
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return P4Type(
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FunctionDeclaration(
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named: Identifier(name: "externally"), ofType: P4Type(P4Int()),
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withParameters: ParameterList(), withBody: .none?))
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}
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public init() {}
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}
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@Test func test_extern_function_declaration() async throws {
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let simple_parser_declaration = """
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extern int externally();
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parser main_parser() {
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state start {
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int t = externally();
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transition select (t == 5) {
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true: accept;
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false: reject;
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};
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}
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};
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"""
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let externally = Return5()
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let program = try! #UseOkResult(
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Program.Compile(
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simple_parser_declaration, withGlobalInstances: .none, withGlobalTypes: .none,
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withFFIs: [externally]))
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let runtime = try #UseOkResult(P4Runtime.ParserRuntime.create(program: program))
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let (state_result, _) = try! #UseOkResult(runtime.run())
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#expect(AsInstantiatedParserState(state_result) == P4Lang.accept)
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}
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@Test func test_extern_function_declaration2() async throws {
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let simple_parser_declaration = """
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extern int externally();
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parser main_parser() {
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state start {
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int t = externally();
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transition select (t == 5) {
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true: accept;
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false: reject;
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};
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}
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};
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"""
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let externally = Return6()
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let program = try! #UseOkResult(
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Program.Compile(
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simple_parser_declaration, withGlobalInstances: .none, withGlobalTypes: .none,
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withFFIs: [externally]))
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let runtime = try #UseOkResult(P4Runtime.ParserRuntime.create(program: program))
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let (state_result, _) = try! #UseOkResult(runtime.run())
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#expect(AsInstantiatedParserState(state_result) == P4Lang.reject)
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}
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