private static int ConvertToInt(Expression expression)
{
CompileTimeConstant/*?*/ cc = expression as CompileTimeConstant;
if (cc == null) return 0; //TODO: error
IConvertible/*?*/ ic = cc.Value as IConvertible;
if (ic == null) return 0; //TODO: error
switch (ic.GetTypeCode()) {
case TypeCode.SByte:
case TypeCode.Byte:
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Int32:
return ic.ToInt32(null);
case TypeCode.Int64:
return (int)ic.ToInt64(null); //TODO: error
case TypeCode.UInt32:
case TypeCode.UInt64:
return (int)ic.ToUInt64(null); //TODO: error
}
return 0; //TODO: error
}
private Expression ConvertToUnsigned(Expression expression)
{
CompileTimeConstant/*?*/ cc = expression as CompileTimeConstant;
if (cc == null) return new ConvertToUnsigned(expression);
IConvertible/*?*/ ic = cc.Value as IConvertible;
if (ic == null) {
if (cc.Value is System.IntPtr) {
cc.Value = (System.UIntPtr)(ulong)(System.IntPtr)cc.Value;
cc.Type = this.platformType.SystemUIntPtr;
return cc;
}
return new ConvertToUnsigned(expression);
}
switch (ic.GetTypeCode()) {
case TypeCode.SByte:
cc.Value = (byte)ic.ToSByte(null); cc.Type = this.platformType.SystemUInt8; break;
case TypeCode.Int16:
cc.Value = (ushort)ic.ToInt16(null); cc.Type = this.platformType.SystemUInt16; break;
case TypeCode.Int32:
cc.Value = (uint)ic.ToInt32(null); cc.Type = this.platformType.SystemUInt32; break;
case TypeCode.Int64:
cc.Value = (ulong)ic.ToInt64(null); cc.Type = this.platformType.SystemUInt64; break;
}
return expression;
}
private static Expression ConvertToUnsigned2(Expression expression) {
Contract.Requires(expression != null);
Contract.Ensures(Contract.Result<Expression>() != null);
var resultType = TypeHelper.UnsignedEquivalent(expression.Type);
if (resultType != expression.Type)
return new Conversion() { ValueToConvert = expression, TypeAfterConversion = resultType };
return expression;
}
private void CopyChildren(Expression expression)
{
expression.Type = this.Copy(expression.Type);
Contract.Assume(expression.Type is Microsoft.Cci.MutableCodeModel.NamedTypeDefinition || expression.Type is Microsoft.Cci.MutableCodeModel.TypeReference);
}
internal EndFilter(EndFilter endFilter)
: base(endFilter) {
Contract.Requires(endFilter != null);
this.FilterResult = endFilter.FilterResult;
}
internal SinglePopReplacer(IMetadataHost host, Expression previouslyPushedExpression)
: base(host) {
Contract.Requires(previouslyPushedExpression != null);
this.previouslyPushedExpression = previouslyPushedExpression;
}
/// <summary>
/// Called from the type specific rewrite method to rewrite the common part of all expressions.
/// </summary>
public virtual void RewriteChildren(Expression expression)
{
expression.Type = this.Rewrite(expression.Type);
}