/// <summary>
/// Populates a property in an object with data from the StepValue.
/// </summary>
/// <param name="pi">The property of the object which will be populated with the data</param>
/// <param name="obj">The object which will be populated</param>
/// <param name="sv">The data to insert into the property</param>
/// <param name="stepId">The Id of the step data object which provided the data. (required incase of any step referencing)</param>
private void populateProperty(PropertyInfo pi, ref object obj, StepValue sv, int stepId ){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
//debugging
logger.Debug("Type of object being populated : " + obj.GetType().FullName);
logger.Debug("The property being assigned to in the .Net object : " + pi.Name);
logger.Debug("The type of values held by that .Net property : " + pi.PropertyType);
logger.Debug("STEP token : " + sv.Token);
logger.Debug("STEP value : " + sv.Value);
logger.Debug("STEP valueType : " + sv.ValueType);
switch(sv.Token){
case StepToken.StartEntity:
mapObject(pi, ref obj, sv);
break;
case StepToken.String:
mapString(pi, ref obj, sv);
break;
case StepToken.LineReference:
storeLineReference(pi, ref obj, stepId, sv);
break;
case StepToken.StartArray:
mapArray(pi, ref obj, sv, stepId);
break;
case StepToken.Enumeration:
mapEnumeration(pi, ref obj, sv);
break;
case StepToken.Integer:
mapInteger(pi, ref obj, sv);
break;
case StepToken.Float:
mapFloat(pi, ref obj, sv);
break;
case StepToken.Null:
//do nothing, the property value will already be null or default value (if a value type).
break;
case StepToken.Overridden:
//do nothing
break;
default:
throw new NotImplementedException(String.Format(CultureInfo.InvariantCulture,
"Failed on attempting to set value of property. This token type is not yet implemented: {0}",
sv.Token));
}
}
public void AssertInteger(int expectedValue, StepValue actual){
AssertStepValue(StepToken.Integer, typeof(int), expectedValue, actual);
}
private void SerializeProperty( IStepWriter writer, StepValue sv){
if(writer == null) throw new ArgumentNullException("writer");
switch(sv.Token){
case StepToken.StartArray:
//TODO assert that sv.ValueType.Equals(typeof(IList<StepValue>)
SerializeArray( writer, sv.Value as List<StepValue> );
break;
case StepToken.Overridden:
writer.WriteOverridden();
break;
case StepToken.Enumeration:
writer.WriteEnum((string)sv.Value);
break;
case StepToken.String:
writer.WriteValue((string)sv.Value);
break;
case StepToken.Integer:
switch(sv.ValueType.ToString()){
case "System.Int16":
writer.WriteValue((System.Int16)sv.Value);
break;
case "System.Int32":
writer.WriteValue((System.Int32)sv.Value);
break;
case "System.Int64":
writer.WriteValue((System.Int64)sv.Value);
break;
default:
throw new StepSerializerException("SerializeProperty(StepWriter, StepValue) has a StepValue of token type Integer, but the ValueType is not an integer");
}
break;
case StepToken.Float:
writer.WriteValue((double)sv.Value);
break;
case StepToken.Boolean:
writer.WriteBool((bool)sv.Value);
break;
case StepToken.Date:
writer.WriteValue(((DateTime)sv.Value).ToString("yyyy-MM-ddTHH:mm:ss", CultureInfo.InvariantCulture));
break;
case StepToken.Null:
writer.WriteNull();
break;
case StepToken.LineReference:
writer.WriteLineReference( (int)sv.Value );
break;
case StepToken.StartEntity:
logger.Debug("StartEntity : " + ((StepDataObject)sv.Value).ObjectName);
SerializeObject(writer, (StepDataObject)sv.Value);
break;
default:
throw new NotImplementedException(String.Format(CultureInfo.InvariantCulture,
"SerializeProperty(StepValue) cannot, yet, handle token {0}",
sv.Token.ToString()));
}
}
private void storeLineReference(PropertyInfo pi, ref Object obj, int stepId, StepValue sp, int index){
this._objectLinks.Add(new StepEntityReference(stepId, pi, (int)sp.Value, index));
}
public void AssertStepValue(StepToken expectedToken, Type expectedValueType, object expectedValue, StepValue actual){
Assert.IsNotNull(actual);
Assert.AreEqual(expectedToken, actual.Token);
Assert.AreEqual(expectedValueType, actual.ValueType);
Assert.AreEqual(expectedValue, actual.Value);
}
/// <summary>
/// Maps a STEP enumeration to a .Net enum
/// </summary>
/// <param name="pi"></param>
/// <param name="obj"></param>
/// <param name="sv"></param>
private void mapEnumeration(PropertyInfo pi, ref Object obj, StepValue sv){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
if(sv.Value == null)
throw new ArgumentNullException("sv.Value");
if(!(sv.Value is string))
throw new ArgumentException("sv.Value should be a type of string");
string spv = sv.Value as string;
if(string.IsNullOrEmpty(spv))
throw new ArgumentException("sv.Value should not be null or empty");
spv = spv.ToLower();
Object val;
//STEP treats boolean values as enumerations
if(pi.PropertyType == typeof(System.Boolean)){
if(spv.Equals("t") || spv.Equals("f"))
val = spv.Equals("t");
else
throw new FormatException(String.Format(CultureInfo.InvariantCulture,
"mapEnumeration found a boolean to parse, but the value was neither 't' nor 'f'. The value was instead {0}",
spv));
}else{
//pi.Property type may be Nullable<theTypeWeNeed>
Type enumType = Nullable.GetUnderlyingType( pi.PropertyType );
if(enumType == null)
enumType = pi.PropertyType;
val = Enum.Parse(enumType, spv);//HACK the ToLower may not work in all cases
}
if(val == null)
throw new FormatException(String.Format(CultureInfo.InvariantCulture,
"Could not find a suitable value for {0} in Enum type {1}",
spv.ToLower(),
pi.PropertyType.Name));
pi.SetValue(obj, val, null);
}
/// <summary>
/// Maps a STEP float to .Net System.Double
/// </summary>
/// <param name="pi"></param>
/// <param name="obj"></param>
/// <param name="sv"></param>
private void mapFloat(PropertyInfo pi, ref Object obj, StepValue sv){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
if(!(sv.Value is double))
throw new ArgumentException("sv.Value cannot be cast to a double");
pi.SetValue(obj, (double)sv.Value, null);
}
public void AssertNestedObject(string expectedName, int expectedNumberOfProperties, StepValue actual){
Assert.IsNotNull(actual);
Assert.IsNotNull(actual.Value);
Assert.AreEqual(StepToken.StartEntity, actual.Token);
Assert.AreEqual(typeof(StepDataObject), actual.ValueType);
StepDataObject sdo = actual.Value as StepDataObject;
Assert.IsNotNull(sdo);
AssertObject(expectedName, expectedNumberOfProperties, sdo);
}
public void AssertNull(StepValue actual){
AssertStepValue(StepToken.Null, null, null, actual);
}
public void AssertArray(int expectedCount, StepValue actual){
AssertArray(actual);
List<StepValue> array = actual.Value as List<StepValue>;
Assert.IsNotNull(array);
Assert.AreEqual(expectedCount, array.Count);
}
public void AssertLineReference(int expectedLineReference, StepValue actual){
AssertStepValue(StepToken.LineReference, typeof(int), expectedLineReference, actual);
}
/// <summary>
/// Asserts a StepValue is an array and is not null, but does not assert anything of the array contents
/// </summary>
/// <param name="actual"></param>
public void AssertArray(StepValue actual){
Assert.IsNotNull(actual);
Assert.AreEqual(StepToken.StartArray, actual.Token);
Assert.AreEqual(typeof(List<StepValue>), actual.ValueType);
Assert.IsNotNull(actual.Value);
}
public void AssertDate(string expectedDate, StepValue actual){
AssertStepValue(StepToken.Date, typeof(DateTime), DateTime.Parse(expectedDate), actual);
}
public void AssertString(string expectedValue, StepValue actual){
AssertStepValue(StepToken.String, typeof(string), expectedValue, actual);
}
/// <summary>
/// Maps a STEP entity to a .Net object
/// </summary>
/// <param name="pi"></param>
/// <param name="obj"></param>
/// <param name="sv"></param>
private void mapObject(PropertyInfo pi, ref Object obj, StepValue sv){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
if(sv.Value == null)
throw new ArgumentNullException("sv.Value");
StepDataObject sdo = sv.Value as StepDataObject;
if(sdo == null)
throw new ArgumentException("sv.Value is not of type StepDataObject");
Object nestedObj = bindObject(-1, sdo);
//as a quirk of the automatically generated schema
//nested properties are wrapped in an intermediate class.
Object wrappingObj = Activator.CreateInstance(pi.PropertyType);
logger.Debug("Attempting to find \"Item\" property for type of " + pi.PropertyType);
PropertyInfo wrappingProp = pi.PropertyType.GetProperty("Item", BindingFlags.DeclaredOnly |
BindingFlags.Public |
BindingFlags.Instance);
if(wrappingProp == null)
throw new StepBindingException("Could not find a suitable property in the wrapping class around a nested object");
wrappingProp.SetValue(wrappingObj, nestedObj, null);
//now insert the wrapping object
pi.SetValue(obj, wrappingObj, null);
}
public void AssertFloat(double expectedValue, StepValue actual){
AssertStepValue(StepToken.Float, typeof(double), expectedValue, actual);
}
/// <summary>
/// Maps a STEP string to a .Net System.String
/// </summary>
/// <param name="pi"></param>
/// <param name="obj"></param>
/// <param name="sv"></param>
private void mapString(PropertyInfo pi, ref Object obj, StepValue sv){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
if(sv.Value == null)
throw new ArgumentNullException("sv.Value");
if(!(sv.Value is string))
throw new ArgumentException("sv.Value is not of type String");
pi.SetValue(obj, (string)sv.Value, null);
}
public void AssertEnum(string expectedValue, StepValue actual){
AssertStepValue(StepToken.Enumeration, typeof(string), expectedValue, actual);
}
/// <summary>
/// Maps a STEP integer to a .Net System.Int32
/// </summary>
/// <param name="pi"></param>
/// <param name="obj"></param>
/// <param name="sv"></param>
private void mapInteger(PropertyInfo pi, ref Object obj, StepValue sv){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
if(!(sv.Value is int))
throw new ArgumentException("sv.Value cannot be cast to an int");
pi.SetValue(obj, (int)sv.Value, null);
}
public void AssertBoolean(bool expectedValue, StepValue actual){
AssertStepValue(StepToken.Boolean, typeof(bool), expectedValue, actual);
}
/// <summary>
/// Maps a STEP array to a .Net array.
/// </summary>
/// <remarks>The .Net schema often wraps arrays in intermediate objects, and this case is dealt with by the function</remarks>
/// <param name="pi">The property of the entity which holds an array</param>
/// <param name="obj">The entity as currently constructed</param>
/// <param name="sv">The value to be entered into the object</param>
/// <param name="stepId">the number of the object as given in the step format being deserialized</param>
private void mapArray(PropertyInfo pi, ref Object obj, StepValue sv, int stepId){
if(pi == null)
throw new ArgumentNullException("pi");
if(obj == null)
throw new ArgumentNullException("obj");
if(sv.Value == null)
throw new ArgumentNullException("sv.Value");
IList<StepValue> stepValues = sv.Value as IList<StepValue>;
if(stepValues == null)
throw new StepBindingException("sv.Value cannot be converted to List<StepValues>");
if(stepValues.Count < 1)
return;
logger.Debug("Number of items in array : " + stepValues.Count);
PropertyInfo arrayProperty = findArrayProperty( pi );
if(arrayProperty == null)
throw new StepBindingException(String.Format(CultureInfo.InvariantCulture,
"Cannot find a suitable property in the array wrapping type {0} which would hold an array",
pi.PropertyType.Name));
Object arrayWrappingObject;
//check incase there is an intermediate type
if(arrayProperty.Equals(pi))
arrayWrappingObject = obj;
else
arrayWrappingObject = System.Activator.CreateInstance(pi.PropertyType);
//get the array, or create it if it doesn't already exist
Array array = (Array)arrayProperty.GetValue(arrayWrappingObject, null);
if(array == null)
array = Array.CreateInstance( arrayProperty.PropertyType.GetElementType(), stepValues.Count );
if(array.Length != stepValues.Count)
throw new StepBindingException(String.Format(CultureInfo.InvariantCulture,
"The array length, {0}, is not long enough to hold all the properties, {1}, being mapped to it",
array.Length,
stepValues.Count));
//iterate through each item and add it to the array.
for(int arrayIndex = 0; arrayIndex < stepValues.Count; arrayIndex++){
StepValue svInner = stepValues[arrayIndex];
//debugging
logger.Debug("Mapping property in array. Index : " + arrayIndex);
logger.Debug("Property being assigned to in the .Net object : " + arrayProperty.Name);
logger.Debug("The Type of values held by that .Net property : " + arrayProperty.PropertyType.GetElementType().Name);
logger.Debug("STEP token : " + svInner.Token);
logger.Debug("STEP value : " + svInner.Value);
logger.Debug("STEP valueType : " + svInner.ValueType);
switch(svInner.Token){
case StepToken.String:
case StepToken.Float:
case StepToken.Integer:
if(array.GetType().GetElementType().Equals( svInner.ValueType ))
array.SetValue(svInner.Value, arrayIndex);
else{
//we need to convert/cast the type, and need the conversion operator of the target type to assist with this
MethodInfo mi = array.GetType().GetElementType().GetMethod(
"op_Implicit",
(BindingFlags.Public | BindingFlags.Static),
null,
new Type[] { svInner.ValueType },
new ParameterModifier[0]
);
if(mi == null)
throw new NotImplementedException(String.Format(CultureInfo.InvariantCulture,
"Cannot convert from a {0} to a type of {1}, as there is no static implicit cast method present on the type we're casting to",
svInner.ValueType.Name,
array.GetType().GetElementType().Name));
Object parsedValue = mi.Invoke(null, BindingFlags.InvokeMethod | (BindingFlags.Public | BindingFlags.Static), null, new object[] { svInner.Value }, CultureInfo.InvariantCulture);
if(parsedValue == null)
throw new StepBindingException(String.Format(CultureInfo.InvariantCulture,
"Was unable to invoke the conversion operator to convert the value {0}, a type of {1}, to the type {2}",
svInner.Value.ToString(),
svInner.ValueType.Name,
array.GetType().GetElementType().Name));
array.SetValue(parsedValue, arrayIndex);
}
continue;
case StepToken.StartEntity:
Object nestedObj = bindObject(-1, svInner.Value as StepDataObject );
array.SetValue(nestedObj, arrayIndex);
continue;
case StepToken.LineReference:
storeLineReference(pi, ref obj, stepId, svInner, arrayIndex);
continue;
default:
throw new NotImplementedException(svInner.Token + " is not yet implemented in mapArray");
}
}
//now add the array to the array wrapping object
arrayProperty.SetValue(arrayWrappingObject, array, null);
//if there is a wrapping object, then we need to insert that into the object.
if(!arrayProperty.Equals(pi)){
pi.SetValue(obj, arrayWrappingObject, null);
}
}
public void AssertOverridden(StepValue actual){
AssertStepValue(StepToken.Overridden, null, null, actual);
}
public static StepValue CreateArray(params StepValue[] values)
{
IList <StepValue> valueList = new List <StepValue>(values);
return(StepValue.CreateArray(valueList));
}
public List<StepValue> getArray(StepValue stepValueContainingArray){
return stepValueContainingArray.Value as List<StepValue>;
}
