/// <summary>
/// Builds an array of signatures for math functions.
/// </summary>
/// <param name="methodName">The name of the method to call on the Math class.</param>
/// <returns>The array of signatures for math functions.</returns>
private static BuiltInFunctionSignature[] CreateMathFunctionSignatureArray(string methodName)
{
BuiltInFunctionSignature doubleSignature = BuiltInFunctionSignature.CreateFromStaticMethodCall(
typeof(Math),
methodName,
PrimitiveTypeUtils.DoubleResourceType,
PrimitiveTypeUtils.DoubleResourceType);
BuiltInFunctionSignature nullableDoubleSignature = BuiltInFunctionSignature.CreateFromStaticMethodCall(
typeof(Math),
methodName,
PrimitiveTypeUtils.DoubleResourceType,
PrimitiveTypeUtils.NullableDoubleResourceType);
BuiltInFunctionSignature decimalSignature = BuiltInFunctionSignature.CreateFromStaticMethodCall(
typeof(Math),
methodName,
PrimitiveTypeUtils.DecimalResourceType,
PrimitiveTypeUtils.DecimalResourceType);
BuiltInFunctionSignature nullableDecimalSignature = BuiltInFunctionSignature.CreateFromStaticMethodCall(
typeof(Math),
methodName,
PrimitiveTypeUtils.DecimalResourceType,
PrimitiveTypeUtils.NullableDecimalResourceType);
return(new BuiltInFunctionSignature[] { doubleSignature, decimalSignature, nullableDoubleSignature, nullableDecimalSignature });
}
/// <summary>
/// Returns a list of signatures for a function name.
/// </summary>
/// <param name="name">The name of the function to look for.</param>
/// <param name="signatures">The list of signatures available for the function name.</param>
/// <returns>true if the function was found, or false otherwise.</returns>
internal static bool TryGetBuiltInFunction(string name, out BuiltInFunctionSignature[] signatures)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(name != null, "name != null");
InitializeBuiltInFunctions();
return builtInFunctions.TryGetValue(name, out signatures);
}
/// <summary>
/// Builds an array of signatures for date time functions.
/// </summary>
/// <param name="propertyName">The name of the property on DateTime to access.</param>
/// <returns>The array of signatures for a date time functions.</returns>
private static BuiltInFunctionSignature[] CreateDateTimeFunctionSignatureArray(string propertyName)
{
BuiltInFunctionSignature signatureNonNullable = BuiltInFunctionSignature.CreateFromPropertyAccess(
propertyName,
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.DateTimeResourceType);
BuiltInFunctionSignature signatureNullable = BuiltInFunctionSignature.CreateFromPropertyAccess(
propertyName,
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.NullableDateTimeResourceType);
return(new BuiltInFunctionSignature[] { signatureNonNullable, signatureNullable });
}
/// <summary>
/// Creates a signature for a function which is executed by accessing a property.
/// </summary>
/// <param name="propertyName">The name of the CLR property to access on the first argument.</param>
/// <param name="returnType">The return resource type of the function.</param>
/// <param name="argumentTypes">The resource types of the arguments of the function. (must be exactly one).</param>
/// <returns>Newly created function signature.</returns>
/// <remarks>Note that arguments are always treated as non-nullable for the CLR method search, even if the ones specified are nullable.</remarks>
internal static BuiltInFunctionSignature CreateFromPropertyAccess(string propertyName, ResourceType returnType, params ResourceType[] argumentTypes)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(argumentTypes != null, "argumentTypes != null");
Debug.Assert(argumentTypes.Length == 1, "Property access built-in function is only allowed to have one argument.");
PropertyInfo property = TypeUtils.GetNonNullableType(argumentTypes[0].InstanceType).GetProperty(
propertyName,
BindingFlags.Public | BindingFlags.Instance);
Debug.Assert(property != null, "Could not find the specified property on the target type.");
BuiltInFunctionSignature signature = new BuiltInFunctionSignature(returnType, argumentTypes);
signature.memberInfo = property;
signature.buildExpression = signature.BuildPropertyAccessExpression;
return(signature);
}
/// <summary>
/// Creates a signature for a function which is executed by calling an instance method.
/// </summary>
/// <param name="methodName">The name of the CLR method to call.</param>
/// <param name="returnType">The return resource type of the function.</param>
/// <param name="argumentTypes">The resource types of the arguments of the function.</param>
/// <returns>Newly created function signature.</returns>
/// <remarks>Note that arguments are always treated as non-nullable for the CLR method search, even if the ones specified are nullable.</remarks>
internal static BuiltInFunctionSignature CreateFromInstanceMethodCall(string methodName, ResourceType returnType, params ResourceType[] argumentTypes)
{
DebugUtils.CheckNoExternalCallers();
MethodInfo method = argumentTypes[0].InstanceType.GetMethod(
methodName,
BindingFlags.Public | BindingFlags.Instance,
null,
argumentTypes.Skip(1).Select(argumentType => TypeUtils.GetNonNullableType(argumentType.InstanceType)).ToArray(),
null);
Debug.Assert(method != null, "Could not find the specified method on the type of the first argument.");
BuiltInFunctionSignature signature = new BuiltInFunctionSignature(returnType, argumentTypes);
signature.memberInfo = method;
signature.buildExpression = signature.BuildInstanceMethodCallExpression;
return(signature);
}
/// <summary>
/// Creates all string functions.
/// </summary>
private static void CreateStringFunctions()
{
BuiltInFunctionSignature signature;
BuiltInFunctionSignature[] signatures;
// bool endswith(string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"EndsWith",
PrimitiveTypeUtils.BoolResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("endswith", new BuiltInFunctionSignature[] { signature });
// int indexof(string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"IndexOf",
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("indexof", new BuiltInFunctionSignature[] { signature });
// string replace(string, string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Replace",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("replace", new BuiltInFunctionSignature[] { signature });
// bool startswith(string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"StartsWith",
PrimitiveTypeUtils.BoolResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("startswith", new BuiltInFunctionSignature[] { signature });
// string tolower(string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"ToLower",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("tolower", new BuiltInFunctionSignature[] { signature });
// string toupper(string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"ToUpper",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("toupper", new BuiltInFunctionSignature[] { signature });
// string trim(string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Trim",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("trim", new BuiltInFunctionSignature[] { signature });
signatures = new BuiltInFunctionSignature[]
{
// string substring(string, int)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.Int32ResourceType),
// string substring(string, int?)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType),
// string substring(string, int, int)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.Int32ResourceType),
// string substring(string, int?, int)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType,
PrimitiveTypeUtils.Int32ResourceType),
// string substring(string, int, int?)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType),
// string substring(string, int?, int?)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType)
};
builtInFunctions.Add("substring", signatures);
// bool substringof(string, string)
signature = new BuiltInFunctionSignature(
BuildSubstringOfExpression,
PrimitiveTypeUtils.BoolResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("substringof", new BuiltInFunctionSignature[] { signature });
// string concat(string, string)
signature = BuiltInFunctionSignature.CreateFromStaticMethodCall(
typeof(string),
"Concat",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("concat", new BuiltInFunctionSignature[] { signature });
// int length(string)
signature = BuiltInFunctionSignature.CreateFromPropertyAccess(
"Length",
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("length", new BuiltInFunctionSignature[] { signature });
}
/// <summary>
/// Creates all string functions.
/// </summary>
private static void CreateStringFunctions()
{
BuiltInFunctionSignature signature;
BuiltInFunctionSignature[] signatures;
// bool endswith(string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"EndsWith",
PrimitiveTypeUtils.BoolResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("endswith", new BuiltInFunctionSignature[] { signature });
// int indexof(string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"IndexOf",
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("indexof", new BuiltInFunctionSignature[] { signature });
// string replace(string, string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Replace",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("replace", new BuiltInFunctionSignature[] { signature });
// bool startswith(string, string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"StartsWith",
PrimitiveTypeUtils.BoolResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("startswith", new BuiltInFunctionSignature[] { signature });
// string tolower(string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"ToLower",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("tolower", new BuiltInFunctionSignature[] { signature });
// string toupper(string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"ToUpper",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("toupper", new BuiltInFunctionSignature[] { signature });
// string trim(string)
signature = BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Trim",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("trim", new BuiltInFunctionSignature[] { signature });
signatures = new BuiltInFunctionSignature[]
{
// string substring(string, int)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.Int32ResourceType),
// string substring(string, int?)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType),
// string substring(string, int, int)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.Int32ResourceType),
// string substring(string, int?, int)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType,
PrimitiveTypeUtils.Int32ResourceType),
// string substring(string, int, int?)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType),
// string substring(string, int?, int?)
BuiltInFunctionSignature.CreateFromInstanceMethodCall(
"Substring",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType,
PrimitiveTypeUtils.NullableInt32ResourceType)
};
builtInFunctions.Add("substring", signatures);
// bool substringof(string, string)
signature = new BuiltInFunctionSignature(
BuildSubstringOfExpression,
PrimitiveTypeUtils.BoolResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("substringof", new BuiltInFunctionSignature[] { signature });
// string concat(string, string)
signature = BuiltInFunctionSignature.CreateFromStaticMethodCall(
typeof(string),
"Concat",
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("concat", new BuiltInFunctionSignature[] { signature });
// int length(string)
signature = BuiltInFunctionSignature.CreateFromPropertyAccess(
"Length",
PrimitiveTypeUtils.Int32ResourceType,
PrimitiveTypeUtils.StringResourceType);
builtInFunctions.Add("length", new BuiltInFunctionSignature[] { signature });
}
/// <summary>
/// Creates a signature for a function which is executed by calling an instance method.
/// </summary>
/// <param name="methodName">The name of the CLR method to call.</param>
/// <param name="returnType">The return resource type of the function.</param>
/// <param name="argumentTypes">The resource types of the arguments of the function.</param>
/// <returns>Newly created function signature.</returns>
/// <remarks>Note that arguments are always treated as non-nullable for the CLR method search, even if the ones specified are nullable.</remarks>
internal static BuiltInFunctionSignature CreateFromInstanceMethodCall(string methodName, ResourceType returnType, params ResourceType[] argumentTypes)
{
DebugUtils.CheckNoExternalCallers();
MethodInfo method = argumentTypes[0].InstanceType.GetMethod(
methodName,
BindingFlags.Public | BindingFlags.Instance,
null,
argumentTypes.Skip(1).Select(argumentType => TypeUtils.GetNonNullableType(argumentType.InstanceType)).ToArray(),
null);
Debug.Assert(method != null, "Could not find the specified method on the type of the first argument.");
BuiltInFunctionSignature signature = new BuiltInFunctionSignature(returnType, argumentTypes);
signature.memberInfo = method;
signature.buildExpression = signature.BuildInstanceMethodCallExpression;
return signature;
}
/// <summary>
/// Creates a signature for a function which is executed by accessing a property.
/// </summary>
/// <param name="propertyName">The name of the CLR property to access on the first argument.</param>
/// <param name="returnType">The return resource type of the function.</param>
/// <param name="argumentTypes">The resource types of the arguments of the function. (must be exactly one).</param>
/// <returns>Newly created function signature.</returns>
/// <remarks>Note that arguments are always treated as non-nullable for the CLR method search, even if the ones specified are nullable.</remarks>
internal static BuiltInFunctionSignature CreateFromPropertyAccess(string propertyName, ResourceType returnType, params ResourceType[] argumentTypes)
{
DebugUtils.CheckNoExternalCallers();
Debug.Assert(argumentTypes != null, "argumentTypes != null");
Debug.Assert(argumentTypes.Length == 1, "Property access built-in function is only allowed to have one argument.");
PropertyInfo property = TypeUtils.GetNonNullableType(argumentTypes[0].InstanceType).GetProperty(
propertyName,
BindingFlags.Public | BindingFlags.Instance);
Debug.Assert(property != null, "Could not find the specified property on the target type.");
BuiltInFunctionSignature signature = new BuiltInFunctionSignature(returnType, argumentTypes);
signature.memberInfo = property;
signature.buildExpression = signature.BuildPropertyAccessExpression;
return signature;
}