Will Hawkins
95 lines
2.9 KiB
Swift
95 lines
2.9 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 P4Parser
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public struct CSTTextSerializer {
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public init() {}
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}
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public struct CSTTextSerializerContext {
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public let serialized: String
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public init(_ serialized: String = "") {
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self.serialized = serialized
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}
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public func append(_ a: String) -> CSTTextSerializerContext {
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return CSTTextSerializerContext(self.serialized + a)
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}
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}
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extension CSTTextSerializer: CSTVisitor<CSTTextSerializerContext> {
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public func visit(
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node: CST.BinaryOperatorExpression, driver: CSTVisitorDriver,
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context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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return .Ok(context.append("Binary Operator Expression"))
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}
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public func visit(
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node: CST.Literal, driver: CSTVisitorDriver,
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context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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return .Ok(context.append("Literal Expression"))
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}
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public func visit(
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node: CST.Identifier, driver: CSTVisitorDriver,
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context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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return .Ok(context.append("Identifier Expression"))
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}
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public func visit(
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node: CST.Parser, driver: CSTVisitorDriver, context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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var context = context.append("Identifier Expression")
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for s in node.states.states {
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switch driver.visit(state: s, visitor: self, context: context) {
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case .Ok(let c): context = c
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case .Error(let e): return .Error(e)
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}
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}
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return .Ok(context)
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}
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public func visit(
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node: CST.ParserStateDirectTransition, driver: CSTVisitorDriver,
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context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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return .Ok(context.append("State: Direct Transition"))
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}
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public func visit(
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node: CST.ParserStateNoTransition, driver: CSTVisitorDriver,
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context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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return .Ok(context.append("State: No Transition"))
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}
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public func visit(
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node: CST.ParserStateSelectTransition, driver: CSTVisitorDriver,
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context: CSTTextSerializerContext
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) -> Common.Result<CSTTextSerializerContext> {
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return .Ok(context.append("State: Direct Transition"))
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}
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}
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