Will Hawkins
1203c0c90a
1. Parsing of P4 Parsers was broken: Multiple local elements and statements were not allowed. 2. Support more functionality on scopes. 3. Refactor variable/identifier. 4. Add more tests. Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
97 lines
3.0 KiB
Swift
97 lines
3.0 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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// 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 Foundation
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import P4
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import Macros
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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 Parser
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@Test func test_simple_runtime() async throws {
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let simple_parser_declaration = """
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parser simple() {
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state start {
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true;
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transition reject;
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}
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}
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"""
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let program = try #UseOkResult(Parser.Program(simple_parser_declaration))
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#expect(#RequireOkResult(P4.ParserRuntime.create(program: program.parsers[0])))
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}
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@Test func test_simple_runtime_no_start_state() async throws {
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let simple_parser_declaration = """
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parser simple() {
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state tart {
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true;
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transition reject;
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}
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}
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"""
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let program = try #UseOkResult(Parser.Program(simple_parser_declaration))
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#expect(
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#RequireErrorResult<ParserRuntime>(
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Error(withMessage: "Could not find the start state"),
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P4.ParserRuntime.create(program: program.parsers[0])))
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}
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@Test func test_simple_local_element_variable_declaration() async throws {
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let simple_parser_declaration = """
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parser simple() {
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state start {
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bool b = false;
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string s = "testing";
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true;
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false;
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transition reject;
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}
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}
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"""
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let program = try #UseOkResult(Parser.Program(simple_parser_declaration))
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let runtime = try #UseOkResult(P4.ParserRuntime.create(program: program.parsers[0]))
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// This seems awkward to me!
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// TODO: Is there a better way?
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guard case P4.Result.Ok(let execution_result) = runtime.run(input: P4.Packet()) else {
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assert(false)
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}
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// There should be 1 scope.
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#expect(execution_result.scopes.count == 1)
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guard let scope = execution_result.scopes.current else {
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assert(false)
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}
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// There are two variables declared.
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#expect(scope.count == 2)
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// Check the names/values of the variables in scope.
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let b = try #require(scope.lookup(identifier: Identifier(name: "b")))
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let s = try #require(scope.lookup(identifier: Identifier(name: "s")))
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#expect(b.value_type == ValueType.Boolean(false))
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#expect(s.value_type == ValueType.String("\"testing\""))
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}
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