/// <summary>
/// Computes the constant value of a nested expression.
/// </summary>
/// <param name="writer">The stream on which to write.</param>
/// <param name="expression">The expression to compute.</param>
protected static string ComputeNestedExpression(ICSharpWriter writer, ICSharpExpression expression)
{
string ValueString;
ICSharpExpressionAsConstant ExpressionAsConstant = expression as ICSharpExpressionAsConstant;
Debug.Assert(ExpressionAsConstant != null);
if (ExpressionAsConstant.IsDirectConstant)
{
ICSharpExpressionContext SourceExpressionContext = new CSharpExpressionContext();
expression.WriteCSharp(writer, SourceExpressionContext, -1);
ValueString = SourceExpressionContext.ReturnValue;
}
else
{
ICSharpComputableExpression ComputableExpression = ExpressionAsConstant as ICSharpComputableExpression;
Debug.Assert(ComputableExpression != null);
ComputableExpression.Compute(writer);
ValueString = ComputableExpression.ComputedValue;
}
return(ValueString);
}
private void ComputeConstant(ICSharpWriter writer)
{
string ValueString;
ICSharpExpressionAsConstant ExpressionAsConstant = ConstantExpression as ICSharpExpressionAsConstant;
Debug.Assert(ExpressionAsConstant != null);
if (ExpressionAsConstant.IsDirectConstant)
{
ICSharpExpressionContext SourceExpressionContext = new CSharpExpressionContext();
ConstantExpression.WriteCSharp(writer, SourceExpressionContext, -1);
ValueString = SourceExpressionContext.ReturnValue;
}
else
{
ICSharpComputableExpression ComputableExpression = ExpressionAsConstant as ICSharpComputableExpression;
Debug.Assert(ComputableExpression != null);
ComputableExpression.Compute(writer);
ValueString = ComputableExpression.ComputedValue;
}
ComputedValue = ValueString;
}
private Number ComputeSide(ICSharpWriter writer, ICSharpExpression expression)
{
string ValueString;
ICSharpExpressionAsConstant ExpressionAsConstant = expression as ICSharpExpressionAsConstant;
Debug.Assert(ExpressionAsConstant != null);
if (ExpressionAsConstant.IsDirectConstant)
{
ICSharpExpressionContext SourceExpressionContext = new CSharpExpressionContext();
expression.WriteCSharp(writer, SourceExpressionContext, -1);
ValueString = SourceExpressionContext.ReturnValue;
}
else
{
ICSharpComputableExpression ComputableExpression = ExpressionAsConstant as ICSharpComputableExpression;
Debug.Assert(ComputableExpression != null);
ComputableExpression.Compute(writer);
ValueString = ComputableExpression.ComputedValue;
}
FormattedNumber Result = FormattedNumber.Parse(ValueString);
return(Result.Value);
}
private void WriteCSharpImplementation(ICSharpWriter writer, CSharpExports exportStatus, bool isLocal, ref bool isFirstFeature, ref bool isMultiline)
{
writer.WriteDocumentation(Source);
string TypeString = Type.Type2CSharpString(writer, CSharpTypeFormats.AsInterface, CSharpNamespaceFormats.None);
string AttributeString = CSharpNames.ToCSharpIdentifier(Name);
ICSharpExpressionAsConstant ExpressionAsConstant = ConstantExpression as ICSharpExpressionAsConstant;
Debug.Assert(ExpressionAsConstant != null);
string ValueString;
if (ExpressionAsConstant.IsDirectConstant)
{
ICSharpExpressionContext SourceExpressionContext = new CSharpExpressionContext();
ConstantExpression.WriteCSharp(writer, SourceExpressionContext, -1);
ValueString = SourceExpressionContext.ReturnValue;
Debug.Assert(ValueString != null);
}
else
{
ICSharpComputableExpression CompilableExpression = ConstantExpression as ICSharpComputableExpression;
Debug.Assert(CompilableExpression != null);
CompilableExpression.Compute(writer);
ValueString = CompilableExpression.ComputedValue;
Debug.Assert(ValueString != null);
writer.WriteIndentedLine($"// {ValueString} = {ConstantExpression.Source.ExpressionToString}");
}
string ExportStatusText = CSharpNames.ComposedExportStatus(false, false, true, exportStatus);
bool IsReadOnlyObject;
if (Type is ICSharpClassType AsClassType)
{
Guid ClassGuid = AsClassType.Source.BaseClass.ClassGuid;
IsReadOnlyObject = ClassGuid != LanguageClasses.Number.Guid && ClassGuid != LanguageClasses.Boolean.Guid && ClassGuid != LanguageClasses.String.Guid && ClassGuid != LanguageClasses.Character.Guid;
}
else
{
IsReadOnlyObject = true;
}
string ConstString = IsReadOnlyObject ? "static readonly" : "const";
writer.WriteIndentedLine($"{ExportStatusText} {ConstString} {TypeString} {AttributeString} = {ValueString};");
}