Will Hawkins
61d8f601e8
In P4, parsers are considered types. Those parsers are instantiated. The instantiated parsers are values. Previously, gp4 treated a parser type and a parser value as identical. This PR makes that difference clear _and_ sets the stage for the future. TODO: Make the same distinction between control and action types and values. Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
98 lines
2.5 KiB
Swift
98 lines
2.5 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 P4Compiler
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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 P4Runtime
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func shrink(_ from: String) -> String {
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return from.replacing(Regex(#/\n[\s]+/#), with: "").replacing("\n", with: "")
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}
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@Test func test_codegen_parser_state_direct_transition() 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(Program.Compile(simple_parser_declaration))
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let cg = try #UseOkResult(CodeGenerator().codeGen(program))
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let expected = shrink(
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"""
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[
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{
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name: "main_parser",
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init_state: "start",
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parse_states: [
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{
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name: "start",
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transitions: []
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},
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]
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}
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]
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""")
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#expect(expected == cg.getGeneratedCode())
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}
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@Test func test_codegen_parser_state_select_transition() 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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true: reject;
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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 program = try #UseOkResult(Program.Compile(simple_parser_declaration))
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let cg = try #UseOkResult(CodeGenerator().codeGen(program))
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/// TODO: Fix this test.
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let expected = shrink(
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"""
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[
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{
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name: "main_parser",
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init_state: "start",
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parse_states: [
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{
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name: "start",
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transitions: [Select]
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},
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]
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}
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]
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""")
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#expect(expected == cg.getGeneratedCode())
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}
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