public static DMExpression Create(DMObject dmObject, DMProc proc, DMASTExpression expression, DreamPath?inferredPath = null)
{
var instance = new DMVisitorExpression(dmObject, proc, inferredPath);
expression.Visit(instance);
return(instance.Result);
}
// Emits a reference that is to be used in an opcode that assigns/gets a value
// May throw if this expression is unable to be referenced
public virtual (DMReference Reference, bool Conditional) EmitReference(DMObject dmObject, DMProc proc)
{
throw new CompileErrorException(Location, $"attempt to reference r-value");
}
// Emits code that pushes the result of this expression to the proc's stack // May throw if this expression is unable to be pushed to the stack public abstract void EmitPushValue(DMObject dmObject, DMProc proc);
public static bool TryConstant(DMObject dmObject, DMProc proc, DMASTExpression expression, out Expressions.Constant constant)
{
var expr = Create(dmObject, proc, expression, null);
return(expr.TryAsConstant(out constant));
}
public static void Emit(DMObject dmObject, DMProc proc, DMASTExpression expression, DreamPath?inferredPath = null)
{
var expr = Create(dmObject, proc, expression, inferredPath);
expr.EmitPushValue(dmObject, proc);
}