org.graylog.plugins.pipelineprocessor.ast.statements.VarAssignStatement Maven / Gradle / Ivy
/**
* This file is part of Graylog.
*
* Graylog 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.
*
* Graylog 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 Graylog. If not, see .
*/
package org.graylog.plugins.pipelineprocessor.ast.statements;
import org.graylog.plugins.pipelineprocessor.EvaluationContext;
import org.graylog.plugins.pipelineprocessor.ast.expressions.Expression;
public class VarAssignStatement implements Statement {
private final String name;
private final Expression expr;
public VarAssignStatement(String name, Expression expr) {
this.name = name;
this.expr = expr;
}
@Override
public Void evaluate(EvaluationContext context) {
final Object result = expr.evaluate(context);
context.define(name, expr.getType(), result);
return null;
}
public String getName() {
return name;
}
public Expression getValueExpression() {
return expr;
}
@Override
public String toString() {
return "let " + name + " = " + expr.toString();
}
}