Introduce a bundle of standard CEL extensions

extensions/BUILD

@@ -12,6 +12,7 @@ cc_library(
         "//common:decl",
         "//common:type",
         "//common:value",
+        "//compiler",
         "//eval/public:cel_function_registry",
         "//eval/public:cel_options",
         "//internal:status_macros",

extensions/encoders.cc

@@ -25,6 +25,7 @@
 #include "common/decl.h"
 #include "common/type.h"
 #include "common/value.h"
+#include "compiler/compiler.h"
 #include "eval/public/cel_function_registry.h"
 #include "eval/public/cel_options.h"
 #include "internal/status_macros.h"
@@ -111,4 +112,8 @@ CheckerLibrary EncodersCheckerLibrary() {
   return {"cel.lib.ext.encoders", &RegisterEncodersDecls};
 }
 
+CompilerLibrary EncodersCompilerLibrary() {
+  return CompilerLibrary::FromCheckerLibrary(EncodersCheckerLibrary());
+}
+
 }  // namespace cel::extensions

extensions/encoders.h

@@ -18,6 +18,7 @@
 #include "absl/base/nullability.h"
 #include "absl/status/status.h"
 #include "checker/type_checker_builder.h"
+#include "compiler/compiler.h"
 #include "eval/public/cel_function_registry.h"
 #include "eval/public/cel_options.h"
 #include "runtime/function_registry.h"
@@ -36,6 +37,9 @@ absl::Status RegisterEncodersFunctions(
 // Declarations for the encoders extension library.
 CheckerLibrary EncodersCheckerLibrary();
 
+// Compiler library for the encoders extension.
+CompilerLibrary EncodersCompilerLibrary();
+
 }  // namespace cel::extensions
 
 #endif  // THIRD_PARTY_CEL_CPP_EXTENSIONS_ENCODERS_H_