protected override void Visit(ResolveUrlChunk chunk)
{
if (!Context.Host.DesignTimeMode && String.IsNullOrEmpty(chunk.Url))
{
return;
}
// TODO: Add instrumentation
if (!String.IsNullOrEmpty(chunk.Url) && !Context.Host.DesignTimeMode)
{
if (Context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
if (!String.IsNullOrEmpty(Context.TargetWriterName))
{
Writer.WriteStartMethodInvocation(Context.Host.GeneratedClassContext.WriteLiteralToMethodName)
.Write(Context.TargetWriterName)
.WriteParameterSeparator();
}
else
{
Writer.WriteStartMethodInvocation(Context.Host.GeneratedClassContext.WriteLiteralMethodName);
}
}
Writer.WriteStartMethodInvocation(Context.Host.GeneratedClassContext.ResolveUrlMethodName)
.WriteStringLiteral(chunk.Url)
.WriteEndMethodInvocation(endLine: false);
if (Context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
Writer.WriteEndMethodInvocation();
}
}
}
protected override void Visit(ResolveUrlChunk chunk)
{
if (!Context.Host.DesignTimeMode && string.IsNullOrEmpty(chunk.Url))
{
return;
}
var generateInstrumentation = ShouldGenerateInstrumentationForExpressions();
if (generateInstrumentation)
{
// Add a non-literal context call (non-literal because the expanded URL will not match the source
// character-by-character)
Writer.WriteStartInstrumentationContext(Context, chunk.Association, isLiteral: false);
}
if (!string.IsNullOrEmpty(chunk.Url) && !Context.Host.DesignTimeMode)
{
if (Context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
RenderPreWriteStart();
}
Writer.WriteStartMethodInvocation(Context.Host.GeneratedClassContext.ResolveUrlMethodName)
.WriteStringLiteral(chunk.Url)
.WriteEndMethodInvocation(endLine: false);
if (Context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
Writer.WriteEndMethodInvocation();
}
}
if (generateInstrumentation)
{
Writer.WriteEndInstrumentationContext(Context);
}
}
protected override void Visit(ResolveUrlChunk chunk)
{
}
/// <summary>
/// Writes code for the given <paramref name="chunk"/>.
/// </summary>
/// <param name="chunk">The <see cref="ResolveUrlChunk"/> to render.</param>
/// <remarks>
/// Allowed to support future C# extensions. Likely "~/..." will lead to a C# compilation error but that is up
/// to the compiler.
/// </remarks>
protected override void Visit(ResolveUrlChunk chunk)
{
RenderCode(chunk.Url, (Span)chunk.Association);
}
protected abstract void Visit(ResolveUrlChunk chunk);
