|
public static ToObject ( |
||
| span | ||
| value | object | |
| destinationType | ||
| return | object | |
private object Calculate(ScriptBinaryOperator op, object leftValue, Type leftType, object rightValue, Type rightType)
{
var customType = leftValue as IScriptCustomType ?? rightValue as IScriptCustomType;
if (customType != null)
{
return(customType.EvaluateBinaryExpression(this, leftValue, rightValue));
}
// The order matters: double, float, long, int
if (leftType == typeof(double))
{
var rightDouble = (double)ScriptValueConverter.ToObject(Span, rightValue, typeof(double));
return(Calculate(op, (double)leftValue, rightDouble));
}
if (rightType == typeof(double))
{
var leftDouble = (double)ScriptValueConverter.ToObject(Span, leftValue, typeof(double));
return(Calculate(op, leftDouble, (double)rightValue));
}
if (leftType == typeof(float))
{
var rightFloat = (float)ScriptValueConverter.ToObject(Span, rightValue, typeof(float));
return(Calculate(op, (float)leftValue, rightFloat));
}
if (rightType == typeof(float))
{
var leftFloat = (float)ScriptValueConverter.ToObject(Span, leftValue, typeof(float));
return(Calculate(op, leftFloat, (float)rightValue));
}
if (leftType == typeof(long))
{
var rightLong = (long)ScriptValueConverter.ToObject(Span, rightValue, typeof(long));
return(Calculate(op, (long)leftValue, rightLong));
}
if (rightType == typeof(long))
{
var leftLong = (long)ScriptValueConverter.ToObject(Span, leftValue, typeof(long));
return(Calculate(op, leftLong, (long)rightValue));
}
if (leftType == typeof(int) || (leftType != null && leftType.GetTypeInfo().IsEnum))
{
var rightInt = (int)ScriptValueConverter.ToObject(Span, rightValue, typeof(int));
return(Calculate(op, (int)leftValue, rightInt));
}
if (rightType == typeof(int) || (rightType != null && rightType.GetTypeInfo().IsEnum))
{
var leftInt = (int)ScriptValueConverter.ToObject(Span, leftValue, typeof(int));
return(Calculate(op, leftInt, (int)rightValue));
}
throw new ScriptRuntimeException(Span, $"Unsupported types [{leftValue ?? "null"}/{leftType?.ToString() ?? "null"}] {op.ToText()} [{rightValue ?? "null"}/{rightType?.ToString() ?? "null"}] for binary operation");
}
public object Evaluate(TemplateContext context, ScriptNode callerContext, ScriptArray parameters, ScriptBlockStatement blockStatement)
{
// Check parameters
if ((hasObjectParams && parameters.Count < parametersInfo.Length - 1) || (!hasObjectParams && parameters.Count != parametersInfo.Length))
{
throw new ScriptRuntimeException(callerContext.Span, $"Invalid number of arguments passed [{parameters.Count}] while expecting [{parametersInfo.Length}] for [{callerContext}]");
}
// Convert arguments
var arguments = new object[parametersInfo.Length];
object[] paramArguments = null;
if (hasObjectParams)
{
paramArguments = new object[parameters.Count - lastParamsIndex];
arguments[lastParamsIndex] = paramArguments;
}
for (int i = 0; i < parameters.Count; i++)
{
var destType = hasObjectParams && i >= lastParamsIndex ? typeof(object) : parametersInfo[i].ParameterType;
try
{
var argValue = ScriptValueConverter.ToObject(callerContext.Span, parameters[i], destType);
if (hasObjectParams && i >= lastParamsIndex)
{
paramArguments[i - lastParamsIndex] = argValue;
}
else
{
arguments[i] = argValue;
}
}
catch (Exception exception)
{
throw new ScriptRuntimeException(callerContext.Span, $"Unable to convert parameter #{i} of type [{parameters[i]?.GetType()}] to type [{destType}]", exception);
}
}
// Call method
try
{
var result = method.Invoke(target, arguments);
return(result);
}
catch (Exception exception)
{
throw new ScriptRuntimeException(callerContext.Span, $"Unexpected exception when calling {callerContext}", exception);
}
}
private TKey TransformToKey(string member)
{
return((TKey)ScriptValueConverter.ToObject(new SourceSpan(), member, typeof(TKey)));
}
