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体验新版 GitCode,发现更多精彩内容 >>
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33be43fa
编写于
5月 15, 2016
作者:
C
CyrusNajmabadi
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Make loop O(n)
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39 deletion
+25
-39
src/Workspaces/Core/Portable/FindSymbols/FindReferences/DependentTypeFinder.cs
...ortable/FindSymbols/FindReferences/DependentTypeFinder.cs
+25
-39
未找到文件。
src/Workspaces/Core/Portable/FindSymbols/FindReferences/DependentTypeFinder.cs
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33be43fa
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@@ -351,47 +351,33 @@ internal static class DependentTypeFinder
IImmutableSet
<
Project
>
projects
,
IEnumerable
<
ProjectId
>
projectsThatCouldReferenceType
)
{
var
projectIds
=
projects
.
Select
(
p
=>
p
.
Id
).
ToSet
();
// We need to search all projects that could reference the type *and* which are
// referenced by some project in the project set.
var
dependencyGraph
=
solution
.
GetProjectDependencyGraph
();
foreach
(
var
projectThatCouldReferenceType
in
projectsThatCouldReferenceType
)
{
if
(
projectIds
.
Contains
(
projectThatCouldReferenceType
))
{
// We were explicitly asked to search this project, and it's a project that
// could be referencing the type we care about. Definitely search this one.
yield
return
solution
.
GetProject
(
projectThatCouldReferenceType
);
}
else
if
(
AnyProjectDependsOn
(
projects
,
dependencyGraph
,
projectThatCouldReferenceType
))
{
// While we were not explicitly asked to search 'projectThatCouldReferenceType',
// we do have some project we care about that depends on that project. Because of
// this we need to search 'projectThatCouldReferenceType' in case it introduces
// intermediate types that affect the projects we care about.
yield
return
solution
.
GetProject
(
projectThatCouldReferenceType
);
}
}
// No point searching a project if it wasn't a project that could have referenced that
// type in the first place.
}
private
static
bool
AnyProjectDependsOn
(
IImmutableSet
<
Project
>
projects
,
ProjectDependencyGraph
dependencyGraph
,
ProjectId
projectThatCouldReferenceType
)
{
foreach
(
var
project
in
projects
)
{
var
projectsThisProjectDependsOn
=
dependencyGraph
.
GetProjectsThatThisProjectTransitivelyDependsOn
(
project
.
Id
);
if
(
projectsThisProjectDependsOn
.
Contains
(
projectThatCouldReferenceType
))
{
return
true
;
}
}
return
false
;
// Take the projects that were passed in, and find all the projects that
// they depend on (including themselves). i.e. if we have a solution that
// looks like:
// A <- B <- C <- D
// /
// └
// E
// and we're passed in 'B, C, E' as hte project to search, then this set
// will be A, B, C, E.
var
allProjectsThatTheseProjectsDependOn
=
projects
.
SelectMany
(
p
=>
dependencyGraph
.
GetProjectsThatThisProjectTransitivelyDependsOn
(
p
.
Id
))
.
Concat
(
projects
.
Select
(
p
=>
p
.
Id
)).
ToSet
();
// We then intersect this set with the actual set of projects that could reference
// the type. Say this list is B, C, D. The intersection of this list and the above
// one will then be 'B' and 'C'.
//
// In other words, there is no point searching A and E (because they can't even
// reference the type). And there's no point searching 'D' because it can't contribute
// any information that would affect the result in the projects we are asked to search
// within.
return
projectsThatCouldReferenceType
.
Intersect
(
allProjectsThatTheseProjectsDependOn
)
.
Select
(
solution
.
GetProject
)
.
ToList
();
}
private
static
async
Task
<
IEnumerable
<
INamedTypeSymbol
>>
FindMetadataTypesInProjectAsync
(
...
...
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