Will Hawkins
35b2537754
Add support for directions on parameters and attributed types. The latter is necessary to support the former, but is not limited to the direction use case. An attributed type is a P4 type with attributes (like its direction, whether it is read only, etc.) Other attributes will be added in the future. Changes necessary to support attributed types include: 1. Global instances tracked during compilation are not attributed types and not simply types. 2. (future) Type checking will have to make sure that a types attributes do not affect type compatibility. Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
67 lines
2.4 KiB
Swift
67 lines
2.4 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 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_scope() async throws {
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let s = VarTypeScope()
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let s2 = s.declare(identifier: Identifier(name: "first"), withValue: P4TypeAttributed.Attributeless(P4Int()))
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let found_first = try! #require(s2.lookup(identifier: Identifier(name: "first")))
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#expect(found_first.type.eq(rhs: P4Int()))
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#expect(s2.count == 1)
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}
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@Test func test_scope_no_set() async throws {
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var ss = VarTypeScopes().enter()
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ss = ss.declare(identifier: Identifier(name: "first"), withValue: P4TypeAttributed.Attributeless(P4Int()))
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ss = ss.enter()
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ss = ss.declare(identifier: Identifier(name: "second"), withValue: P4TypeAttributed.Attributeless(P4Boolean()))
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let found_first = try! #UseOkResult(ss.lookup(identifier: Identifier(name: "first")))
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let found_second = try! #UseOkResult(ss.lookup(identifier: Identifier(name: "second")))
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#expect(found_first.type.eq(rhs: P4Int()))
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#expect(found_second.type.eq(rhs: P4Boolean()))
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}
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@Test func test_scope_set() async throws {
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var ss = VarTypeScopes().enter()
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let id = Identifier(name: "first")
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let id_type = P4TypeAttributed.Attributeless(P4Int())
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ss = ss.declare(identifier: id, withValue: id_type)
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ss = ss.enter()
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ss = ss.declare(identifier: Identifier(name: "second"), withValue: P4TypeAttributed.Attributeless(P4Boolean()))
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// Change the value of `first`.
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ss = ss.set(identifier: id, withValue: P4TypeAttributed.Attributeless(P4String()))
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// Verify the change!
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let found = try! #UseOkResult(ss.lookup(identifier: id))
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#expect(found.type.eq(rhs: P4String()))
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}
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