public override void GenerateCode(Span target, CodeGeneratorContext context)
{
// We parsed: "@contentType Text.Html"
// And we assigned this code generator to the "Text.Html" part
// So this node's content should be "Text.Html"
string contentType = target.Content;
// The final code we want is something like
// Response.ContentType = ContentTypes.Text.Html;
// So, we start by injecting the "prolog" (this is compiler speak for the stuff before the user code)
context.BufferStatementFragment("Response.ContentType = ContentTypes.");
// Now we tell the code generator infrastructure that we're at the start of user code
// This allows us to inject markers so the editor can light up.
context.MarkStartOfGeneratedCode();
// Here's our user code!
context.BufferStatementFragment(contentType);
// And we tell Razor we're finished with user code, again for the editor
context.MarkEndOfGeneratedCode();
// Finally, we inject the "epilog" (compiler speak for stuff after the user code)
context.BufferStatementFragment(";");
// And output the whole statement to the generated Execute method
context.FlushBufferedStatement();
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
string writeInvocation = context.BuildCodeString(cw =>
{
if (context.Host.DesignTimeMode)
{
context.EnsureExpressionHelperVariable();
cw.WriteStartAssignment("__o");
}
else if (context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
if (!String.IsNullOrEmpty(context.TargetWriterName))
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteToMethodName);
cw.WriteSnippet(context.TargetWriterName);
cw.WriteParameterSeparator();
}
else
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteMethodName);
}
}
});
context.BufferStatementFragment(writeInvocation);
context.MarkStartOfGeneratedCode();
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
if (
context.Host.EnableInstrumentation &&
context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput
)
{
Span contentSpan = target.Children
.OfType <Span>()
.Where(s => s.Kind == SpanKind.Code || s.Kind == SpanKind.Markup)
.FirstOrDefault();
if (contentSpan != null)
{
context.AddContextCall(
contentSpan,
context.Host.GeneratedClassContext.BeginContextMethodName,
false
);
}
}
string writeInvocation = context.BuildCodeString(
cw =>
{
if (context.Host.DesignTimeMode)
{
context.EnsureExpressionHelperVariable();
cw.WriteStartAssignment("__o");
}
else if (
context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput
)
{
if (!String.IsNullOrEmpty(context.TargetWriterName))
{
cw.WriteStartMethodInvoke(
context.Host.GeneratedClassContext.WriteToMethodName
);
cw.WriteSnippet(context.TargetWriterName);
cw.WriteParameterSeparator();
}
else
{
cw.WriteStartMethodInvoke(
context.Host.GeneratedClassContext.WriteMethodName
);
}
}
}
);
context.BufferStatementFragment(writeInvocation);
context.MarkStartOfGeneratedCode();
}
public override void GenerateStartBlockCode(Block target, CodeGeneratorContext context)
{
if (context.Host.EnableInstrumentation && context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
Span contentSpan = target.Children
.OfType<Span>()
.Where(s => s.Kind == SpanKind.Code || s.Kind == SpanKind.Markup)
.FirstOrDefault();
if (contentSpan != null)
{
context.AddContextCall(contentSpan, context.Host.GeneratedClassContext.BeginContextMethodName, false);
}
}
string writeInvocation = context.BuildCodeString(cw =>
{
if (context.Host.DesignTimeMode)
{
context.EnsureExpressionHelperVariable();
cw.WriteStartAssignment("__o");
}
else if (context.ExpressionRenderingMode == ExpressionRenderingMode.WriteToOutput)
{
if (!String.IsNullOrEmpty(context.TargetWriterName))
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteToMethodName);
cw.WriteSnippet(context.TargetWriterName);
cw.WriteParameterSeparator();
}
else
{
cw.WriteStartMethodInvoke(context.Host.GeneratedClassContext.WriteMethodName);
}
}
});
context.BufferStatementFragment(writeInvocation);
context.MarkStartOfGeneratedCode();
}
