public ReflectionMemberAccessor(InternalHandlebarsConfiguration configuration)
{
_configuration = configuration;
_inner = configuration.CompileTimeConfiguration.UseAggressiveCaching
? (IMemberAccessor) new CompiledReflectionMemberAccessor()
: (IMemberAccessor) new PlainReflectionMemberAccessor();
}
public static BindingContext Create(InternalHandlebarsConfiguration configuration, object value,
EncodedTextWriter writer, BindingContext parent, string templatePath,
Action <TextWriter, object> partialBlockTemplate,
IDictionary <string, Action <TextWriter, object> > inlinePartialTemplates)
{
return(Pool.CreateContext(configuration, value, writer, parent, templatePath, partialBlockTemplate, inlinePartialTemplates));
}
internal Action <TextWriter, object> CompileView(string templatePath,
InternalHandlebarsConfiguration configuration)
{
var fs = _configuration.FileSystem;
if (fs == null)
{
throw new InvalidOperationException("Cannot compile view when configuration.FileSystem is not set");
}
var template = fs.GetFileContent(templatePath);
if (template == null)
{
throw new InvalidOperationException("Cannot find template at '" + templatePath + "'");
}
IEnumerable <object> tokens;
using (var sr = new StringReader(template))
{
using (var reader = new ExtendedStringReader(sr))
{
tokens = Tokenizer.Tokenize(reader).ToList();
}
}
var layoutToken = tokens.OfType <LayoutToken>().SingleOrDefault();
var expressionBuilder = new ExpressionBuilder(configuration);
var expressions = expressionBuilder.ConvertTokensToExpressions(tokens);
var compiledView = FunctionBuilder.Compile(expressions, configuration, templatePath);
if (layoutToken == null)
{
return(compiledView);
}
var layoutPath = fs.Closest(templatePath, layoutToken.Value + ".hbs");
if (layoutPath == null)
{
throw new InvalidOperationException("Cannot find layout '" + layoutPath + "' for template '" +
templatePath + "'");
}
var compiledLayout = CompileView(layoutPath, configuration);
return((tw, vm) =>
{
string inner;
using (var innerWriter = new PolledStringWriter(configuration.FormatProvider))
{
compiledView(innerWriter, vm);
inner = innerWriter.ToString();
}
compiledLayout(tw, new DynamicViewModel(new[] { new { body = inner }, vm }));
});
}
private BindingContext(InternalHandlebarsConfiguration configuration, object value, EncodedTextWriter writer, BindingContext parent)
{
Configuration = configuration;
TextWriter = writer;
Value = value;
ParentContext = parent;
RegisterValueProvider(new BindingContextValueProvider(this));
}
public BindingContext CreateContext(InternalHandlebarsConfiguration configuration, object value, EncodedTextWriter writer, BindingContext parent, string templatePath, Action <TextWriter, object> partialBlockTemplate, IDictionary <string, Action <TextWriter, object> > inlinePartialTemplates)
{
var context = Get();
context.Configuration = configuration;
context.Value = value;
context.TextWriter = writer;
context.ParentContext = parent;
context.TemplatePath = templatePath;
context.InlinePartialTemplates = inlinePartialTemplates;
context.PartialBlockTemplate = partialBlockTemplate;
context.Initialize();
return(context);
}
public Action <TextWriter, object> Compile(ExtendedStringReader source)
{
var configuration = new InternalHandlebarsConfiguration(_configuration);
var createdFeatures = configuration.Features;
for (var index = 0; index < createdFeatures.Count; index++)
{
createdFeatures[index].OnCompiling(configuration);
}
var expressionBuilder = new ExpressionBuilder(configuration);
var tokens = Tokenizer.Tokenize(source).ToList();
var expressions = expressionBuilder.ConvertTokensToExpressions(tokens);
var action = FunctionBuilder.Compile(expressions, configuration);
for (var index = 0; index < createdFeatures.Count; index++)
{
createdFeatures[index].CompilationCompleted();
}
return(action);
}
public CompilationContext(InternalHandlebarsConfiguration configuration)
{
Configuration = configuration;
BindingContext = Expression.Variable(typeof(BindingContext), "context");
}
public static Action <TextWriter, object> Compile(IEnumerable <Expression> expressions, InternalHandlebarsConfiguration configuration, string templatePath = null)
{
try
{
var expression = CompileCore(expressions, null, configuration, templatePath);
return(configuration.CompileTimeConfiguration.ExpressionCompiler.Compile(expression));
}
catch (Exception ex)
{
throw new HandlebarsCompilerException("An unhandled exception occurred while trying to compile the template", ex);
}
}
public static Expression <Action <TextWriter, object> > CompileCore(IEnumerable <Expression> expressions, Expression parentContext, InternalHandlebarsConfiguration configuration, string templatePath = null)
{
try
{
if (!expressions.Any())
{
return(EmptyLambda);
}
if (expressions.IsOneOf <Expression, DefaultExpression>())
{
return(EmptyLambda);
}
var context = new CompilationContext(configuration);
var expression = (Expression)Expression.Block(expressions);
expression = Reduce(expression, context);
return(ContextBinder.Bind(context, expression, parentContext, templatePath));
}
catch (Exception ex)
{
throw new HandlebarsCompilerException("An unhandled exception occurred while trying to compile the template", ex);
}
}
public ObjectDescriptorProvider(InternalHandlebarsConfiguration configuration)
{
_configuration = configuration;
}