gp4/Sources/P4Lang/Statement.swift

// p4rse, Copyright 2026, Will Hawkins
//
// This file is part of p4rse.
//
// This file is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.

import Common

public struct Statement {}

public struct VariableDeclarationStatement {
  public var initializer: P4Expression
  public var identifier: TypedIdentifier
  public init(identifier: TypedIdentifier, withInitializer initializer: P4Expression) {
    self.identifier = identifier
    self.initializer = initializer
  }
}

public struct ConditionalStatement {
  public var condition: P4Expression
  public var thenn: P4Statement
  public var elss: P4Statement?

  public init(condition: P4Expression, withThen thenn: P4Statement) {
    self.condition = condition
    self.thenn = thenn
    self.elss = .none
  }

  public init(
    condition: P4Expression, withThen thenn: P4Statement,
    andElse elss: P4Statement
  ) {
    self.condition = condition
    self.thenn = thenn
    self.elss = elss
  }
}

public struct BlockStatement {
  public var statements: [P4Statement]

  public init(_ statements: [P4Statement]) {
    self.statements = statements
  }

}

public struct ReturnStatement {
  public let value: P4Expression

  public init(_ value: P4Expression) {
    self.value = value
  }
}

public struct ApplyStatement {
  public let body: BlockStatement?

  public init() { self.body = .none }
  public init(_ body: BlockStatement) {
    self.body = body
  }
}