Will Hawkins
40 lines
1.4 KiB
Swift
40 lines
1.4 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 Lang
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import Common
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extension VariableDeclarationStatement: EvaluatableParserStatement {
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public func evaluate(execution: ProgramExecution) -> ProgramExecution {
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let new_scopes = execution.scopes.declare(variable: self.variable)
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execution.scopes = new_scopes
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return execution
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}
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}
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extension ExpressionStatement: EvaluatableParserStatement {
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public func evaluate(execution: ProgramExecution) -> ProgramExecution {
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return execution
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}
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}
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// Variables are evaluatable because they can be looked up by identifiers.
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extension Identifier: EvaluatableExpression {
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public func evaluate(execution: Common.ProgramExecution) -> Result<P4Value> {
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return execution.scopes.evaluate(identifier: self)
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}
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} |