Will Hawkins
a24571222b
Allow the user to customize the evaluation/execution of expressions/ statements with something that implements functions that perform those tasks. This additional functionality will make it possible for the "classic" evaluator not to waste time checking for the presence of interlopers and give implementers additional customization opportunities. Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
114 lines
3.9 KiB
Swift
114 lines
3.9 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 P4Runtime
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import P4Lang
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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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@Test func test_statement_interloper() async throws {
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let simple_parser_declaration = """
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parser main_parser() {
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state starts {
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bool where_to = false;
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int va = 5;
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transition accept;
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}
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state start {
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bool where_to = true;
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where_to = true;
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transition select (where_to) {
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false: reject;
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true: starts;
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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 runtime = try #UseOkResult(P4Runtime.ParserRuntime.create(program: program))
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var statements_executed: [String] = Array()
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let ev = InterloperEvaluator().setStatementInterloper() { (statement, cf, execution) in
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statements_executed.append("\(statement)")
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}
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let (state_result, _) = try! #UseOkResult(runtime.run(withArguments: ArgumentList(), inExecution: ProgramExecution(ev)))
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#expect(AsInstantiatedParserState(state_result) == P4Lang.accept)
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#expect(statements_executed[0].hasPrefix("VariableDeclarationStatement"))
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#expect(statements_executed[1].hasPrefix("ParserAssignmentStatement"))
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// Moved into starts
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#expect(statements_executed[2].hasPrefix("VariableDeclarationStatement"))
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#expect(statements_executed[3].hasPrefix("VariableDeclarationStatement"))
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}
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@Test func test_expression_interloper() async throws {
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let simple_parser_declaration = """
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parser main_parser() {
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state starts {
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bool where_to = false;
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int va = 5;
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transition accept;
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}
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state start {
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bool where_to = true;
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where_to = true;
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transition select (where_to) {
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false: reject;
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true: starts;
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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 runtime = try #UseOkResult(P4Runtime.ParserRuntime.create(program: program))
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var expressions_evaluated: [String] = Array()
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let ev = InterloperEvaluator().setExpressionInterloper() { expression, result, execution in
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expressions_evaluated.append("\(expression)")
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}
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let (state_result, _) = try! #UseOkResult(runtime.run(withArguments: ArgumentList(), inExecution: ProgramExecution(ev)))
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#expect(AsInstantiatedParserState(state_result) == P4Lang.accept)
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#expect(expressions_evaluated[0].hasPrefix("Value: true of Boolean"))
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#expect(expressions_evaluated[1].hasPrefix("Value: true of Boolean"))
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#expect(expressions_evaluated[2].hasPrefix("where_to"))
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#expect(expressions_evaluated[3].hasPrefix("Value: false of Boolean"))
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#expect(expressions_evaluated[4].hasPrefix("KeysetExpression"))
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#expect(expressions_evaluated[5].hasPrefix("Value: true of Boolean"))
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#expect(expressions_evaluated[6].hasPrefix("KeysetExpression"))
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#expect(expressions_evaluated[7].hasPrefix("SelectCaseExpression"))
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#expect(expressions_evaluated[8].hasPrefix("SelectExpression"))
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// Moved into starts
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#expect(expressions_evaluated[9].hasPrefix("Value: false of Boolean"))
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#expect(expressions_evaluated[10].hasPrefix("Value: 5 of Int"))
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}
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