Move SamplerTexturePair from inspector to sem.

The plan is to reuse this datatype for the combine-samplers transform.

Bug: tint:1366
Change-Id: Icd2f4bd45b662f32fe9803e3485f1a54a2c42265
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/76320
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Commit-Queue: Stephen White <senorblanco@chromium.org>

src/BUILD.gn

diff --git a/src/BUILD.gn b/src/BUILD.gn
index f517b74..c36f031 100644
--- a/src/BUILD.gn
+++ b/src/BUILD.gn
@@ -357,7 +357,6 @@
     "inspector/inspector.h",
     "inspector/resource_binding.cc",
     "inspector/resource_binding.h",
-    "inspector/sampler_texture_pair.h",
     "inspector/scalar.cc",
     "inspector/scalar.h",
     "intrinsic_table.cc",
@@ -406,6 +405,7 @@
     "sem/pointer_type.h",
     "sem/reference_type.h",
     "sem/sampled_texture_type.h",
+    "sem/sampler_texture_pair.h",
     "sem/sampler_type.h",
     "sem/storage_texture_type.h",
     "sem/switch_statement.h",

src/CMakeLists.txt

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 9399b6b..be42ae5 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -224,7 +224,6 @@
   inspector/inspector.h
   inspector/resource_binding.cc
   inspector/resource_binding.h
-  inspector/sampler_texture_pair.h
   inspector/scalar.cc
   inspector/scalar.h
   intrinsic_table.cc
@@ -277,6 +276,7 @@
   sem/pipeline_stage_set.h
   sem/node.cc
   sem/node.h
+  sem/sampler_texture_pair.h
   sem/statement.cc
   sem/struct.cc
   sem/type_mappings.h

src/inspector/inspector.cc

diff --git a/src/inspector/inspector.cc b/src/inspector/inspector.cc
index a9f2f65..33c8449 100644
--- a/src/inspector/inspector.cc
+++ b/src/inspector/inspector.cc
@@ -524,7 +524,7 @@
       ResourceBinding::ResourceType::kExternalTexture);
 }
 
-std::vector<SamplerTexturePair> Inspector::GetSamplerTextureUses(
+std::vector<sem::SamplerTexturePair> Inspector::GetSamplerTextureUses(
     const std::string& entry_point) {
   auto* func = FindEntryPointByName(entry_point);
   if (!func) {
@@ -774,7 +774,7 @@
   }
 
   sampler_targets_ = std::make_unique<std::unordered_map<
-      std::string, utils::UniqueVector<SamplerTexturePair>>>();
+      std::string, utils::UniqueVector<sem::SamplerTexturePair>>>();
 
   auto& sem = program_->Sem();
 

src/inspector/inspector.h

diff --git a/src/inspector/inspector.h b/src/inspector/inspector.h
index c84233b..e8f573f 100644
--- a/src/inspector/inspector.h
+++ b/src/inspector/inspector.h
@@ -24,9 +24,9 @@
 
 #include "src/inspector/entry_point.h"
 #include "src/inspector/resource_binding.h"
-#include "src/inspector/sampler_texture_pair.h"
 #include "src/inspector/scalar.h"
 #include "src/program.h"
+#include "src/sem/sampler_texture_pair.h"
 #include "src/utils/unique_vector.h"
 
 namespace tint {
@@ -129,7 +129,7 @@
   /// @param entry_point name of the entry point to get information about.
   /// @returns vector of all of the sampler/texture sampling pairs that are used
   /// by that entry point.
-  std::vector<SamplerTexturePair> GetSamplerTextureUses(
+  std::vector<sem::SamplerTexturePair> GetSamplerTextureUses(
       const std::string& entry_point);
 
   /// @param entry_point name of the entry point to get information about.
@@ -141,7 +141,8 @@
   const Program* program_;
   diag::List diagnostics_;
   std::unique_ptr<
-      std::unordered_map<std::string, utils::UniqueVector<SamplerTexturePair>>>
+      std::unordered_map<std::string,
+                         utils::UniqueVector<sem::SamplerTexturePair>>>
       sampler_targets_;
 
   /// @param name name of the entry point to find

src/sem/sampler_texture_pair.h

diff --git a/src/inspector/sampler_texture_pair.h b/src/sem/sampler_texture_pair.h
similarity index 80%
rename from src/inspector/sampler_texture_pair.h
rename to src/sem/sampler_texture_pair.h
index 2af9fbe..9f0135b 100644
--- a/src/inspector/sampler_texture_pair.h
+++ b/src/sem/sampler_texture_pair.h
@@ -12,8 +12,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#ifndef SRC_INSPECTOR_SAMPLER_TEXTURE_PAIR_H_
-#define SRC_INSPECTOR_SAMPLER_TEXTURE_PAIR_H_
+#ifndef SRC_SEM_SAMPLER_TEXTURE_PAIR_H_
+#define SRC_SEM_SAMPLER_TEXTURE_PAIR_H_
 
 #include <cstdint>
 #include <functional>
@@ -21,14 +21,14 @@
 #include "src/sem/binding_point.h"
 
 namespace tint {
-namespace inspector {
+namespace sem {
 
 /// Mapping of a sampler to a texture it samples.
 struct SamplerTexturePair {
   /// group & binding values for a sampler.
-  sem::BindingPoint sampler_binding_point;
+  BindingPoint sampler_binding_point;
   /// group & binding values for a texture samepled by the sampler.
-  sem::BindingPoint texture_binding_point;
+  BindingPoint texture_binding_point;
 
   /// Equality operator
   /// @param rhs the SamplerTexturePair to compare against
@@ -46,21 +46,21 @@
   }
 };
 
-}  // namespace inspector
+}  // namespace sem
 }  // namespace tint
 
 namespace std {
 
-/// Custom std::hash specialization for tint::inspector::SamplerTexturePair so
+/// Custom std::hash specialization for tint::sem::SamplerTexturePair so
 /// SamplerTexturePairs be used as keys for std::unordered_map and
 /// std::unordered_set.
 template <>
-class hash<tint::inspector::SamplerTexturePair> {
+class hash<tint::sem::SamplerTexturePair> {
  public:
   /// @param stp the texture pair to create a hash for
   /// @return the hash value
   inline std::size_t operator()(
-      const tint::inspector::SamplerTexturePair& stp) const {
+      const tint::sem::SamplerTexturePair& stp) const {
     return tint::utils::Hash(stp.sampler_binding_point,
                              stp.texture_binding_point);
   }
@@ -68,4 +68,4 @@
 
 }  // namespace std
 
-#endif  // SRC_INSPECTOR_SAMPLER_TEXTURE_PAIR_H_
+#endif  // SRC_SEM_SAMPLER_TEXTURE_PAIR_H_