BadNullCoalescingExpressionCompiler.cs

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using BadScript2.Parser.Expressions.Access;
 
namespace BadScript2.Runtime.VirtualMachine.Compiler.ExpressionCompilers.Access;
 
public class BadNullCoalescingExpressionCompiler : BadExpressionCompiler<BadNullCoalescingExpression>
{
    public override void Compile(BadExpressionCompileContext context, BadNullCoalescingExpression expression)
    {
        context.Compile(expression.Left);
        context.Emit(BadOpCode.Dup, expression.Position);
        int jend = context.EmitEmpty();
        context.Emit(BadOpCode.Pop, expression.Position);
        context.Compile(expression.Right);
        context.ResolveEmpty(jend, BadOpCode.JumpRelativeIfNotNull, expression.Position, context.InstructionCount - jend - 1);
    }
}