Will Hawkins
127 lines
3.7 KiB
Swift
127 lines
3.7 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 Lang
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import Macros
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import Runtime
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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 main_parser() {
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state start {
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true;
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transition accept;
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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(Runtime.ParserRuntime.create(program: program))
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let (state_result, _) = try! #UseOkResult(runtime.run())
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// We should be in the accept state.
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#expect(state_result == Lang.accept)
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}
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@Test func test_simple_runtime_to_accept() async throws {
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let simple_parser_declaration = """
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parser main_parser() {
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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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let runtime = try #UseOkResult(Runtime.ParserRuntime.create(program: program))
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let (state_result, _) = try! #UseOkResult(runtime.run())
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// We should be in the accept state.
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#expect(state_result == Lang.reject)
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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 main_parser() {
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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: "No start state defined"),
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Runtime.ParserRuntime.create(program: program)))
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}
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@Test func test_simple_parser_with_transition_select_expression() async throws {
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let simple_parser_declaration = """
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parser main_parser() {
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state start {
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transition select (true) {
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false: reject;
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true: accept;
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};
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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 parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
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let runtime = try #UseOkResult(Runtime.ParserRuntime.create(program: program))
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let (state_result, _) = try! #UseOkResult(runtime.run())
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#expect(parser.states.count() == 1)
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#expect(state_result == Lang.accept)
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}
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@Test func test_simple_parser_with_transition_select_expression_to_reject() async throws {
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let simple_parser_declaration = """
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parser main_parser() {
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state start {
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transition select (false) {
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false: reject;
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true: accept;
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};
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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 parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
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let runtime = try #UseOkResult(Runtime.ParserRuntime.create(program: program))
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let (state_result, _) = try! #UseOkResult(runtime.run())
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#expect(parser.states.count() == 1)
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#expect(state_result == Lang.reject)
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}
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