Will Hawkins
a7d8fd1304
Distinguishing between signed and unsigned fixed-width integer types must still be done. Signed-off-by: Will Hawkins <hawkinsw@obs.cr>
120 lines
3.8 KiB
Swift
120 lines
3.8 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 P4Lang
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import P4Runtime
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import SwiftTreeSitter
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import TreeSitterExtensions
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import TreeSitterP4
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extension P4Boolean: CompilableType {
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public static func CompileType(
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type: SwiftTreeSitter.Node, withContext: CompilerContext
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) -> Common.Result<(any Common.P4Type)?> {
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return type.text == "bool" ? .Ok(P4Boolean()) : .Ok(.none)
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}
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}
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extension P4Int: CompilableType {
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public static func CompileType(
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type: SwiftTreeSitter.Node, withContext: CompilerContext
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) -> Common.Result<(any Common.P4Type)?> {
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// Drill down, as appropriate.
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let base_type_node = type.child(at: 0)!
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#SkipUnlessNodeType<SwiftTreeSitter.Node>(
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node: base_type_node, type: "baseType")
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let type_node = base_type_node.child(at: 0)!
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#SkipUnlessNodeType<SwiftTreeSitter.Node>(
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node: type_node, type: "int_type")
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var walker = Walker(node: type_node)
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var int_node: Node? = .none
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#MustOr(
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result: int_node, thing: walker.getNext(),
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or: Result<P4Type?>.Error(
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ErrorWithLocation(
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sourceLocation: type_node.toSourceLocation(),
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withError: "Missing elements in int type declaration")))
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// Move passed the keyword.
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walker.next()
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if let bit_width_node = walker.getNext() {
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guard let bit_width = Int(bit_width_node.child(at: 1)!.text!),
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bit_width != 0
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else {
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return .Error(
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ErrorWithLocation(
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sourceLocation: bit_width_node.toSourceLocation(),
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withError: "Could not parse \(bit_width_node.text!) into integer"))
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}
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return .Ok(P4Int(BitWidth.Width(bit_width)))
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}
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return .Ok(P4Int())
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}
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}
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extension P4String: CompilableType {
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public static func CompileType(
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type: SwiftTreeSitter.Node, withContext: CompilerContext
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) -> Common.Result<(any Common.P4Type)?> {
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return type.text == "string" ? .Ok(P4String()) : .Ok(.none)
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}
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}
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extension P4Struct: CompilableType {
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public static func CompileType(
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type: SwiftTreeSitter.Node, withContext context: CompilerContext
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) -> Common.Result<(any Common.P4Type)?> {
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let maybe_parsed_type_id = Identifier.Compile(node: type, withContext: context)
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guard case .Ok(let parsed_type_id) = maybe_parsed_type_id else {
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return .Error(maybe_parsed_type_id.error()!)
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}
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if case .Ok(let found_type) = context.types.lookup(identifier: parsed_type_id),
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let found_struct_type = found_type as? P4Struct
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{
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return .Ok(found_struct_type)
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}
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return .Ok(.none)
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}
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}
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public struct Types {
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static func CompileType(
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type: SwiftTreeSitter.Node, withContext context: CompilerContext
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) -> Result<P4QualifiedType> {
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let type_parsers: [CompilableType.Type] = [
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P4Boolean.self, P4Int.self, P4String.self, P4Struct.self,
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]
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for type_parser in type_parsers {
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switch type_parser.CompileType(type: type, withContext: context) {
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case .Ok(.some(let type)): return .Ok(P4QualifiedType(type))
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case .Ok(.none): continue
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case .Error(let e): return .Error(e)
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}
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}
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return Result.Error(Error(withMessage: "Type name not recognized"))
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}
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}
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