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compiler, language, runtime: Separate Parser Type From Instances
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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>
This commit is contained in:
Will Hawkins
2026-05-27 05:41:23 -04:00
parent 925f20a13b
commit 61d8f601e8
36 changed files with 1058 additions and 796 deletions
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Tests/p4rseTests/ExpressionTests/FunctionCall.swift
+10 -10
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@@ -46,12 +46,12 @@ import TreeSitterP4
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.Parser>.create(program: program))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(parser.states.count() == 1)
#expect(AsInstantiatedParserState(state_result) == P4Lang.accept)
#expect(state_result == P4Lang.accept)
}
@Test func test_function_call_scoped_name_collision2() async throws {
@@ -75,12 +75,12 @@ import TreeSitterP4
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.Parser>.create(program: program))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(parser.states.count() == 1)
#expect(AsInstantiatedParserState(state_result) == P4Lang.reject)
#expect(state_result == P4Lang.reject)
}
@Test func test_function_call_scoped_name_collision_inout() async throws {
@@ -103,12 +103,12 @@ import TreeSitterP4
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.Parser>.create(program: program))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(parser.states.count() == 1)
#expect(AsInstantiatedParserState(state_result) == P4Lang.accept)
#expect(state_result == P4Lang.accept)
}
@@ -130,12 +130,12 @@ import TreeSitterP4
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.Parser>.create(program: program))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(parser.states.count() == 1)
#expect(AsInstantiatedParserState(state_result) == P4Lang.accept)
#expect(state_result == P4Lang.accept)
}
@Test func test_function_call_integer_return_value2() async throws {
@@ -156,12 +156,12 @@ import TreeSitterP4
let program = try #UseOkResult(Program.Compile(simple_parser_declaration))
let parser = try #UseOkResult(program.find_parser(withName: Identifier(name: "main_parser")))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.Parser>.create(program: program))
let runtime = try #UseOkResult(P4Runtime.Runtime<InstantiatedParserState, P4Lang.ParserValue>.create(program: program))
let (state_result, _) = try! #UseOkResult(runtime.run())
#expect(parser.states.count() == 1)
#expect(AsInstantiatedParserState(state_result) == P4Lang.reject)
#expect(state_result == P4Lang.reject)
}
@Test func test_function_call_invalid_return_type() async throws {