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Refactored internal class `TagHelperBlockTracker` slightly.

This commit is contained in:
N. Taylor Mullen 2015-09-18 17:29:19 -07:00
parent 0253c563be
commit 44675701cb
1 changed files with 17 additions and 7 deletions
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24
src/Microsoft.AspNet.Razor/Parser/TagHelpers/TagHelperParseTreeRewriter.cs
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@ -572,22 +572,18 @@ namespace Microsoft.AspNet.Razor.Parser.TagHelpers.Internal
private class TagHelperBlockTracker private class TagHelperBlockTracker
{ {
private IEnumerable<string> _prefixedAllowedChildren;
public TagHelperBlockTracker(TagHelperBlockBuilder builder) public TagHelperBlockTracker(TagHelperBlockBuilder builder)
{ {
Builder = builder; Builder = builder;
if (Builder.Descriptors.Any(descriptor => descriptor.AllowedChildren != null)) if (Builder.Descriptors.Any(descriptor => descriptor.AllowedChildren != null))
{ {
Debug.Assert(Builder.Descriptors.Count() >= 1);
var tagHelperPrefix = Builder.Descriptors.First().Prefix;
AllowedChildren = Builder.Descriptors AllowedChildren = Builder.Descriptors
.Where(descriptor => descriptor.AllowedChildren != null) .Where(descriptor => descriptor.AllowedChildren != null)
.SelectMany(descriptor => descriptor.AllowedChildren) .SelectMany(descriptor => descriptor.AllowedChildren)
.Distinct(StringComparer.OrdinalIgnoreCase); .Distinct(StringComparer.OrdinalIgnoreCase);
PrefixedAllowedChildren = AllowedChildren.Select(allowedChild => tagHelperPrefix + allowedChild);
} }
} }
@ -597,7 +593,21 @@ namespace Microsoft.AspNet.Razor.Parser.TagHelpers.Internal
public IEnumerable<string> AllowedChildren { get; } public IEnumerable<string> AllowedChildren { get; }
public IEnumerable<string> PrefixedAllowedChildren { get; } public IEnumerable<string> PrefixedAllowedChildren
{
get
{
if (AllowedChildren != null && _prefixedAllowedChildren == null)
{
Debug.Assert(Builder.Descriptors.Count() >= 1);
var prefix = Builder.Descriptors.First().Prefix;
_prefixedAllowedChildren = AllowedChildren.Select(allowedChild => prefix + allowedChild);
}
return _prefixedAllowedChildren;
}
}
} }
} }
} }