Will Hawkins
73 lines
2.2 KiB
Swift
73 lines
2.2 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 SwiftTreeSitter
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extension CST.Program: Parsable {
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public typealias C = CST.Program
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public static func Parse(
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node: Node, withContext context: CSTCompilerContext
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) -> Common.Result<CST.Program> {
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var statements: [CST.Statement] = Array()
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var errors: (any Errorable)? = .none
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// Try to parse all top-level declarations.
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node.enumerateNamedChildren { (declaration_node: Node) in
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let declaration_parsers: [String: ParsableStatement.Type] = [
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"declaration": CST.Declaration.self,
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"instantiation": CST.Instantiation.self,
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]
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if let parser = declaration_parsers[declaration_node.nodeType!] {
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let r = parser.ParseStatement(node: declaration_node, withContext: context)
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switch r {
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case .Ok(let compiled):
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statements.append(compiled)
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case .Error(let e):
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errors =
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if let errors = errors {
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errors.append(error: e)
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} else {
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e
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}
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}
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} else {
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let e = ErrorWithLocation(
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sourceLocation: declaration_node.toSourceLocation(),
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withError:
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"\(declaration_node.nodeType!) cannot be at a P4 program top level")
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errors =
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if let errors = errors {
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errors.append(error: e)
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} else {
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e
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}
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}
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}
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if let errors = errors {
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return .Error(errors)
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}
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return Result.Ok(CST.Program(CST.Statements(statements)))
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}
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}
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