public static void Iterate(
BindingContext context,
EncodedTextWriter writer,
ChainSegment[] blockParamsVariables,
object target,
TemplateDelegate template,
TemplateDelegate ifEmpty)
{
if (!HandlebarsUtils.IsTruthy(target))
{
using var frame = context.CreateFrame(context.Value);
ifEmpty(writer, frame);
return;
}
if (!ObjectDescriptor.TryCreate(target, out var descriptor))
{
throw new HandlebarsRuntimeException($"Cannot create ObjectDescriptor for type {descriptor.DescribedType}");
}
if (descriptor.Iterator == null)
{
throw new HandlebarsRuntimeException($"Type {descriptor.DescribedType} does not support iteration");
}
descriptor.Iterator.Iterate(writer, context, blockParamsVariables, target, template, ifEmpty);
}
internal Closure(PathInfo pi0, PathInfo pi1, PathInfo pi2, PathInfo pi3, PathInfo[] pia, StrongBox <HelperDescriptorBase> hd0, StrongBox <HelperDescriptorBase> hd1, StrongBox <HelperDescriptorBase> hd2, StrongBox <HelperDescriptorBase> hd3, StrongBox <HelperDescriptorBase>[] hda, StrongBox <BlockHelperDescriptorBase> bhd0, StrongBox <BlockHelperDescriptorBase> bhd1, StrongBox <BlockHelperDescriptorBase> bhd2, StrongBox <BlockHelperDescriptorBase> bhd3, StrongBox <BlockHelperDescriptorBase>[] bhda, TemplateDelegate td0, TemplateDelegate td1, TemplateDelegate td2, TemplateDelegate td3, TemplateDelegate[] tda, ChainSegment[] bp0, ChainSegment[][] bpa, object[] a)
{
PI0 = pi0;
PI1 = pi1;
PI2 = pi2;
PI3 = pi3;
PIA = pia;
HD0 = hd0;
HD1 = hd1;
HD2 = hd2;
HD3 = hd3;
HDA = hda;
BHD0 = bhd0;
BHD1 = bhd1;
BHD2 = bhd2;
BHD3 = bhd3;
BHDA = bhda;
TD0 = td0;
TD1 = td1;
TD2 = td2;
TD3 = td3;
TDA = tda;
BP0 = bp0;
BPA = bpa;
A = a;
}
public JsEngine(string name, List <string> extensions, List <string> requires, TemplateDelegate template, string source)
{
this.Name = name;
this._extensions = extensions;
this._requires = requires;
this.Source = source;
this.Template = template;
}
private static void IterateObjectWithStaticProperties(
BindingContext context,
EncodedTextWriter writer,
ChainSegment[] blockParamsVariables,
ObjectDescriptor descriptor,
object target,
IList <ChainSegment> properties,
Type targetType,
TemplateDelegate template,
TemplateDelegate ifEmpty)
{
using var innerContext = context.CreateFrame();
var iterator = new ObjectIteratorValues(innerContext);
var blockParams = new BlockParamsValues(innerContext, blockParamsVariables);
blockParams.CreateProperty(0, out var _0);
blockParams.CreateProperty(1, out var _1);
var count = properties.Count;
var accessor = new MemberAccessor(target, descriptor);
var iterationIndex = 0;
var lastIndex = count - 1;
object iteratorValue;
ChainSegment iteratorKey;
for (; iterationIndex < count; iterationIndex++)
{
iteratorKey = properties[iterationIndex];
iterator.Index = iterationIndex;
iterator.Key = iteratorKey;
if (iterationIndex == 1)
{
iterator.First = BoxedValues.False;
}
if (iterationIndex == lastIndex)
{
iterator.Last = BoxedValues.True;
}
iteratorValue = accessor[iteratorKey];
iterator.Value = iteratorValue;
innerContext.Value = iteratorValue;
blockParams[_0] = iteratorValue;
blockParams[_1] = iteratorKey;
template(writer, innerContext);
}
if (iterationIndex == 0)
{
innerContext.Value = context.Value;
ifEmpty(writer, innerContext);
}
}
private static void IterateObject(
BindingContext context,
EncodedTextWriter writer,
ObjectDescriptor descriptor,
ChainSegment[] blockParamsVariables,
object target,
IEnumerable properties,
Type targetType,
TemplateDelegate template,
TemplateDelegate ifEmpty)
{
using var innerContext = context.CreateFrame();
var iterator = new ObjectIteratorValues(innerContext);
var blockParams = new BlockParamsValues(innerContext, blockParamsVariables);
blockParams.CreateProperty(0, out var _0);
blockParams.CreateProperty(1, out var _1);
var accessor = new MemberAccessor(target, descriptor);
var enumerable = new ExtendedEnumerator <object>(properties.GetEnumerator());
var enumerated = false;
object iteratorValue;
ChainSegment iteratorKey;
while (enumerable.MoveNext())
{
enumerated = true;
var enumerableValue = enumerable.Current;
iteratorKey = ChainSegment.Create(enumerableValue.Value);
iterator.Key = iteratorKey;
iterator.Index = enumerableValue.Index;
if (enumerableValue.Index == 1)
{
iterator.First = BoxedValues.False;
}
if (enumerableValue.IsLast)
{
iterator.Last = BoxedValues.True;
}
iteratorValue = accessor[iteratorKey];
iterator.Value = iteratorValue;
innerContext.Value = iteratorValue;
blockParams[_0] = iteratorValue;
blockParams[_1] = iteratorKey;
template(writer, innerContext);
}
if (!enumerated)
{
innerContext.Value = context.Value;
ifEmpty(writer, innerContext);
}
}
public static void PlainHelper(
BindingContext context,
EncodedTextWriter writer,
object value,
TemplateDelegate body,
TemplateDelegate inverse
)
{
RenderSection(value, context, writer, body, inverse);
}
private static void IterateEnumerable(
BindingContext context,
EncodedTextWriter writer,
ChainSegment[] blockParamsVariables,
IEnumerable target,
TemplateDelegate template,
TemplateDelegate ifEmpty)
{
using var innerContext = context.CreateFrame();
var iterator = new IteratorValues(innerContext);
var blockParams = new BlockParamsValues(innerContext, blockParamsVariables);
blockParams.CreateProperty(0, out var _0);
blockParams.CreateProperty(1, out var _1);
var enumerator = new ExtendedEnumerator <object>(target.GetEnumerator());
var enumerated = false;
object boxedIndex;
object iteratorValue;
while (enumerator.MoveNext())
{
enumerated = true;
var enumerableValue = enumerator.Current;
if (enumerableValue.Index == 1)
{
iterator.First = BoxedValues.False;
}
if (enumerableValue.IsLast)
{
iterator.Last = BoxedValues.True;
}
boxedIndex = enumerableValue.Index;
iteratorValue = enumerableValue.Value;
iterator.Value = iteratorValue;
iterator.Index = boxedIndex;
blockParams[_0] = iteratorValue;
blockParams[_1] = boxedIndex;
innerContext.Value = iteratorValue;
template(writer, innerContext);
}
if (!enumerated)
{
innerContext.Value = context.Value;
ifEmpty(writer, innerContext);
}
}
private static void IterateList(
BindingContext context,
EncodedTextWriter writer,
ChainSegment[] blockParamsVariables,
IList target,
TemplateDelegate template,
TemplateDelegate ifEmpty)
{
using var innerContext = context.CreateFrame();
var iterator = new IteratorValues(innerContext);
var blockParams = new BlockParamsValues(innerContext, blockParamsVariables);
blockParams.CreateProperty(0, out var _0);
blockParams.CreateProperty(1, out var _1);
var count = target.Count;
object boxedIndex;
object iteratorValue;
var iterationIndex = 0;
var lastIndex = count - 1;
for (; iterationIndex < count; iterationIndex++)
{
iteratorValue = target[iterationIndex];
iterator.Value = iteratorValue;
if (iterationIndex == 1)
{
iterator.First = BoxedValues.False;
}
if (iterationIndex == lastIndex)
{
iterator.Last = BoxedValues.True;
}
boxedIndex = iterationIndex;
iterator.Index = boxedIndex;
blockParams[_0] = iteratorValue;
blockParams[_1] = boxedIndex;
innerContext.Value = iteratorValue;
template(writer, innerContext);
}
if (iterationIndex == 0)
{
innerContext.Value = context.Value;
ifEmpty(writer, innerContext);
}
}
private static void TemplateDelegateInvoke()
{
TemplateDelegate <int, double, float> del1 = AddIntDoubleConvert;
TemplateDelegate <float, double, int> del2 = AddFloatDoubleConvert;
Console.WriteLine("Invoking del1(5, 3.9)");
float f = del1(5, 3.9);
Console.WriteLine("Invokeing del2");
int i = del2((float)4.3, 2.1);
}
internal BlockHelperOptions(
PathInfo name,
TemplateDelegate template,
TemplateDelegate inverse,
ChainSegment[] blockParamsValues,
BindingContext frame
)
{
Name = name;
OriginalTemplate = template;
OriginalInverse = inverse;
Frame = frame;
BlockVariables = blockParamsValues;
}
internal HelperOptions(
TemplateDelegate template,
TemplateDelegate inverse,
ChainSegment[] blockParamsValues,
BindingContext frame
)
{
_extensions = frame.Extensions;
OriginalTemplate = template;
OriginalInverse = inverse;
Frame = frame;
BlockParams = blockParamsValues;
}
public static void Iterate(
BindingContext context,
EncodedTextWriter writer,
ChainSegment[] blockParamsVariables,
object target,
TemplateDelegate template,
TemplateDelegate ifEmpty)
{
if (!HandlebarsUtils.IsTruthy(target))
{
using var frame = context.CreateFrame(context.Value);
ifEmpty(writer, frame);
return;
}
var targetType = target.GetType();
if (!context.Configuration.ObjectDescriptorProvider.TryGetDescriptor(targetType, out var descriptor))
{
using var frame = context.CreateFrame(context.Value);
ifEmpty(writer, frame);
return;
}
if (!descriptor.ShouldEnumerate)
{
var properties = descriptor.GetProperties(descriptor, target);
if (properties is IList <ChainSegment> propertiesList)
{
IterateObjectWithStaticProperties(context, writer, blockParamsVariables, descriptor, target, propertiesList, targetType, template, ifEmpty);
return;
}
IterateObject(context, writer, descriptor, blockParamsVariables, target, properties, targetType, template, ifEmpty);
return;
}
if (target is IList list)
{
IterateList(context, writer, blockParamsVariables, list, template, ifEmpty);
return;
}
IterateEnumerable(context, writer, blockParamsVariables, (IEnumerable)target, template, ifEmpty);
}
private static void RenderSection(object value,
BindingContext context,
EncodedTextWriter writer,
TemplateDelegate body,
TemplateDelegate inversion)
{
switch (value)
{
case bool boolValue when boolValue:
body(writer, context);
return;
case null:
case object _ when HandlebarsUtils.IsFalsyOrEmpty(value):
inversion(writer, context);
return;
case string _:
{
using var frame = context.CreateFrame(value);
body(writer, frame);
return;
}
case IEnumerable enumerable:
Iterator.Iterate(context, writer, BlockParamsVariables, enumerable, body, inversion);
break;
default:
{
using var frame = context.CreateFrame(value);
body(writer, frame);
break;
}
}
}
internal BindingContext CreateChildContext(object value, TemplateDelegate partialBlockTemplate = null)
{
return(Create(Configuration, value, this, partialBlockTemplate ?? PartialBlockTemplate));
}
public BindingContext CreateContext(ICompiledHandlebarsConfiguration configuration, object value, BindingContext parent, TemplateDelegate partialBlockTemplate)
{
var context = Get();
context.Configuration = configuration;
context.Value = value;
context.ParentContext = parent;
context.PartialBlockTemplate = partialBlockTemplate;
context.Initialize();
return(context);
}
internal static BindingContext Create(ICompiledHandlebarsConfiguration configuration, object value, BindingContext parent,
TemplateDelegate partialBlockTemplate)
{
return(Pool.CreateContext(configuration, value, parent, partialBlockTemplate));
}
