Work-around for C# CodeDom causing stack-overflow (CS1647) in csc.exe?

Question

I\'ve got a situation where I need to generate a class with a large string const. Code outside of my control causes my generated CodeDom tree to be emitted to C# source and

Answer 1

Using a CodeSnippetExpression and a manually quoted string, I was able to emit the source that I would have liked to have seen from Microsoft.CSharp.CSharpCodeGenerator.

So to answer the question above, replace this line:

field.InitExpression = new CodePrimitiveExpression(HugeString);

with this:

field.InitExpression = new CodeSnippetExpression(QuoteSnippetStringCStyle(HugeString));

And finally modify the private string quoting Microsoft.CSharp.CSharpCodeGenerator.QuoteSnippetStringCStyle method to not wrap after 80 chars:

private static string QuoteSnippetStringCStyle(string value)
{
    // CS1647: An expression is too long or complex to compile near '...'
    // happens if number of line wraps is too many (335440 is max for x64, 926240 is max for x86)

    // CS1034: Compiler limit exceeded: Line cannot exceed 16777214 characters
    // theoretically every character could be escaped unicode (6 chars), plus quotes, etc.

    const int LineWrapWidth = (16777214/6) - 4;
    StringBuilder b = new StringBuilder(value.Length+5);

    b.Append("\r\n\"");
    for (int i=0; i 0) && ((i % LineWrapWidth) == 0))
        {
            if ((Char.IsHighSurrogate(value[i]) && (i < (value.Length - 1))) && Char.IsLowSurrogate(value[i + 1]))
            {
                b.Append(value[++i]);
            }
            b.Append("\"+\r\n");
            b.Append('"');
        }
    }
    b.Append("\"");
    return b.ToString();
}