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gp4/Tests/p4rseTests/ExpressionTests.swift
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Will Hawkins 61d8f601e8
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compiler, language, runtime: Separate Parser Type From Instances
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>
2026-05-27 05:41:23 -04:00

89 lines
2.7 KiB
Swift

// p4rse, Copyright 2026, Will Hawkins
//
// This file is part of p4rse.
//
// This file is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
import Common
import Foundation
import Macros
import P4Lang
import P4Runtime
import SwiftTreeSitter
import Testing
import TreeSitter
import TreeSitterP4
@testable import P4Compiler
@Test func test_expression_grouped_equal() async throws {
let simple_parser_declaration = """
parser main_parser() {
state start {
bool x = (true == (1 < 4));
transition select (x) {
false: reject;
true: accept;
};
}
};
"""
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(state_result == P4Lang.accept)
}
@Test func test_expression_grouped_or() async throws {
let simple_parser_declaration = """
parser main_parser() {
state start {
bool x = (false || (1 < 4));
transition select (x) {
false: reject;
true: accept;
};
}
};
"""
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(state_result == P4Lang.accept)
}
@Test func test_expression_grouped_and() async throws {
let simple_parser_declaration = """
parser main_parser() {
state start {
bool x = (false && (1 < 4));
transition select (x) {
false: reject;
true: accept;
};
}
};
"""
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(state_result == P4Lang.reject)
}