public Action <TemplateScopeContext, object, object> GetAssignExpression(Type targetType, ReadOnlyMemory <char> expression)
{
if (targetType == null)
{
throw new ArgumentNullException(nameof(targetType));
}
if (expression.IsNullOrWhiteSpace())
{
throw new ArgumentNullException(nameof(expression));
}
var key = targetType.FullName + ':' + expression;
if (AssignExpressionCache.TryGetValue(key, out var fn))
{
return(fn);
}
AssignExpressionCache[key] = fn = TemplatePageUtils.CompileAssign(targetType, expression);
return(fn);
}
public Func <TemplateScopeContext, object, object> GetExpressionBinder(Type targetType, StringSegment expression)
{
if (targetType == null)
{
throw new ArgumentNullException(nameof(targetType));
}
if (expression.IsNullOrWhiteSpace())
{
throw new ArgumentNullException(nameof(expression));
}
var key = targetType.FullName + ':' + expression;
if (BinderCache.TryGetValue(key, out Func <TemplateScopeContext, object, object> fn))
{
return(fn);
}
BinderCache[key] = fn = TemplatePageUtils.Compile(targetType, expression);
return(fn);
}
public async Task <TemplatePage> Load()
{
string contents;
using (var stream = File.OpenRead())
{
contents = await stream.ReadToEndAsync();
}
var lastModified = File.LastModified;
var fileContents = contents.AsMemory();
var pageVars = new Dictionary <string, object>();
var pos = 0;
var bodyContents = fileContents;
fileContents.AdvancePastWhitespace().TryReadLine(out ReadOnlyMemory <char> line, ref pos);
if (line.StartsWith(Format.ArgsPrefix))
{
while (fileContents.TryReadLine(out line, ref pos))
{
if (line.Trim().Length == 0)
{
continue;
}
if (line.StartsWith(Format.ArgsSuffix))
{
break;
}
line.SplitOnFirst(':', out var first, out var last);
pageVars[first.Trim().ToString()] = !last.IsEmpty ? last.Trim().ToString() : "";
}
//When page has variables body starts from first non whitespace after variable's end
var argsSuffixPos = line.LastIndexOf(Format.ArgsSuffix);
if (argsSuffixPos >= 0)
{
//Start back from the end of the ArgsSuffix
pos -= line.Length - argsSuffixPos - Format.ArgsSuffix.Length;
}
bodyContents = fileContents.SafeSlice(pos).AdvancePastWhitespace();
}
var pageFragments = pageVars.TryGetValue("ignore", out object ignore) &&
("page".Equals(ignore.ToString()) || "template".Equals(ignore.ToString()))
? new List <PageFragment> {
new PageStringFragment(bodyContents)
}
: TemplatePageUtils.ParseTemplatePage(bodyContents);
foreach (var fragment in pageFragments)
{
if (fragment is PageVariableFragment var && var.Binding == TemplateConstants.Page)
{
IsLayout = true;
break;
}
}
lock (semaphore)
{
LastModified = lastModified;
LastModifiedCheck = DateTime.UtcNow;
FileContents = fileContents;
Args = pageVars;
BodyContents = bodyContents;
PageFragments = pageFragments;
HasInit = true;
LayoutPage = Format.ResolveLayout(this);
}
if (LayoutPage != null)
{
if (!LayoutPage.HasInit)
{
await LayoutPage.Load();
}
else
{
if (Context.DebugMode || Context.CheckForModifiedPagesAfter != null &&
DateTime.UtcNow - LayoutPage.LastModifiedCheck >= Context.CheckForModifiedPagesAfter.Value)
{
LayoutPage.File.Refresh();
LayoutPage.LastModifiedCheck = DateTime.UtcNow;
if (LayoutPage.File.LastModified != LayoutPage.LastModified)
{
await LayoutPage.Load();
}
}
}
}
return(this);
}
public async Task <TemplatePage> Load()
{
string serverHtml;
using (var stream = File.OpenRead())
using (var reader = new StreamReader(stream, Encoding.UTF8))
{
serverHtml = await reader.ReadToEndAsync();
}
lock (semaphore)
{
LastModified = File.LastModified;
ServerHtml = serverHtml.ToStringSegment();
PageVars = new Dictionary <string, string>();
var pos = 0;
while (char.IsWhiteSpace(ServerHtml.GetChar(pos)))
{
pos++;
}
ServerHtml.TryReadLine(out StringSegment line, ref pos);
if (line.StartsWith("<!--"))
{
while (ServerHtml.TryReadLine(out line, ref pos))
{
if (line.Trim().Length == 0)
{
continue;
}
if (line.StartsWith("-->"))
{
break;
}
var kvp = line.SplitOnFirst(':');
PageVars[kvp[0].Trim().ToString()] = kvp.Length > 1 ? kvp[1].Trim().ToString() : "";
}
}
else
{
pos = 0;
}
PageHtml = ServerHtml.Subsegment(pos).TrimStart();
PageFragments = TemplatePageUtils.ParseTemplatePage(PageHtml);
IsCompletePage = Context.IsCompletePage(PageHtml);
HasInit = true;
if (!IsCompletePage)
{
if (PageVars.TryGetValue(TemplatePages.Layout, out string layout))
{
Layout = layout;
}
LayoutPage = Context.TemplatePages.ResolveLayoutPage(this);
}
}
if (LayoutPage != null)
{
if (!LayoutPage.HasInit)
{
await LayoutPage.Load();
}
else if (Context.CheckModifiedPages || Context.DebugMode)
{
LayoutPage.File.Refresh();
if (LayoutPage.File.LastModified > LayoutPage.LastModified)
{
await LayoutPage.Load();
}
}
}
return(this);
}
public async Task <TemplatePage> Load()
{
string contents;
using (var stream = File.OpenRead())
using (var reader = new StreamReader(stream, Encoding.UTF8))
{
contents = await reader.ReadToEndAsync();
}
var lastModified = File.LastModified;
var fileContents = contents.ToStringSegment();
var pageVars = new Dictionary <string, object>();
var pos = 0;
var bodyContents = fileContents;
fileContents.AdvancePastWhitespace().TryReadLine(out StringSegment line, ref pos);
if (line.StartsWith(Format.ArgsPrefix))
{
while (fileContents.TryReadLine(out line, ref pos))
{
if (line.Trim().Length == 0)
{
continue;
}
if (line.StartsWith(Format.ArgsSuffix))
{
break;
}
var kvp = line.SplitOnFirst(':');
pageVars[kvp[0].Trim().ToString()] = kvp.Length > 1 ? kvp[1].Trim().ToString() : "";
}
//When page has variables body starts from first non whitespace after variable's end
bodyContents = fileContents.SafeSubsegment(pos).AdvancePastWhitespace();
}
var pageFragments = pageVars.TryGetValue("ignore", out object ignore) &&
("page".Equals(ignore.ToString()) || "template".Equals(ignore.ToString()))
? new List <PageFragment> {
new PageStringFragment(bodyContents)
}
: TemplatePageUtils.ParseTemplatePage(bodyContents);
foreach (var fragment in pageFragments)
{
if (fragment is PageVariableFragment var && var.BindingString == TemplateConstants.Page)
{
IsLayout = true;
break;
}
}
lock (semaphore)
{
LastModified = lastModified;
LastModifiedCheck = DateTime.UtcNow;
FileContents = fileContents;
Args = pageVars;
BodyContents = bodyContents;
PageFragments = pageFragments;
HasInit = true;
LayoutPage = Format.ResolveLayout(this);
}
if (LayoutPage != null)
{
if (!LayoutPage.HasInit)
{
await LayoutPage.Load();
}
else
{
if (Context.DebugMode || Context.CheckForModifiedPagesAfter != null &&
DateTime.UtcNow - LayoutPage.LastModifiedCheck >= Context.CheckForModifiedPagesAfter.Value)
{
LayoutPage.File.Refresh();
LayoutPage.LastModifiedCheck = DateTime.UtcNow;
if (LayoutPage.File.LastModified != LayoutPage.LastModified)
{
await LayoutPage.Load();
}
}
}
}
return(this);
}
public async Task <TemplatePage> Load()
{
string contents;
using (var stream = File.OpenRead())
using (var reader = new StreamReader(stream, Encoding.UTF8))
{
contents = await reader.ReadToEndAsync();
}
var lastModified = File.LastModified;
var fileContents = contents.ToStringSegment();
var pageVars = new Dictionary <string, object>();
var pos = 0;
while (char.IsWhiteSpace(fileContents.GetChar(pos)))
{
pos++;
}
fileContents.TryReadLine(out StringSegment line, ref pos);
if (line.StartsWith(Format.ArgsPrefix))
{
while (fileContents.TryReadLine(out line, ref pos))
{
if (line.Trim().Length == 0)
{
continue;
}
if (line.StartsWith(Format.ArgsSuffix))
{
break;
}
var kvp = line.SplitOnFirst(':');
pageVars[kvp[0].Trim().ToString()] = kvp.Length > 1 ? kvp[1].Trim().ToString() : "";
}
}
else
{
pos = 0;
}
var bodyContents = fileContents.Subsegment(pos).TrimStart();
var pageFragments = TemplatePageUtils.ParseTemplatePage(bodyContents);
lock (semaphore)
{
LastModified = lastModified;
FileContents = fileContents;
Args = pageVars;
BodyContents = bodyContents;
PageFragments = pageFragments;
HasInit = true;
LayoutPage = Format.ResolveLayout(this);
}
if (LayoutPage != null)
{
if (!LayoutPage.HasInit)
{
await LayoutPage.Load();
}
else if (Context.CheckForModifiedPages || Context.DebugMode)
{
LayoutPage.File.Refresh();
if (LayoutPage.File.LastModified != LayoutPage.LastModified)
{
await LayoutPage.Load();
}
}
}
return(this);
}
