diffbase

bazel/antlr4_cc.bzl

@@ -1,5 +1,7 @@
 """Build rules to create C++ code from an Antlr4 grammar."""
 
+load("@rules_java//java:defs.bzl", "java_binary")
+
 def antlr4_cc_lexer(name, src, namespaces = None, imports = None, deps = None, lib_import = None):
     """Generates the C++ source corresponding to an antlr4 lexer definition.
 
@@ -25,8 +27,7 @@ def antlr4_cc_lexer(name, src, namespaces = None, imports = None, deps = None, l
         "%sLexer.h" % base_file_prefix,
         "%sLexer.cpp" % base_file_prefix,
     ]
-
-    native.java_binary(
+    java_binary(
         name = "antlr_tool",
         jvm_flags = ["-Xmx256m"],
         main_class = "org.antlr.v4.Tool",

bazel/go_dependencies.bzl

@@ -208,3 +208,9 @@ def fhir_go_dependencies():
         sum = "h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=",
         version = "v0.0.0-20191204190536-9bdfabe68543",
     )
+    go_repository(
+        name = "com_github_antrl4_go_antlr",
+        importpath = "github.com/antlr4-go/antlr/v4",
+        sum = "h1:lxCg3LAv+EUK6t1i0y1V6/SLeUi0eKEKdhQAlS8TVTI=",
+        version = "v4.13.0",
+    )

bazel/protogen.bzl

@@ -11,9 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-
 """Rules for generating Protos from FHIR definitions"""
 
+load("@rules_java//java:defs.bzl", "java_binary", "java_test")
+
 R4_PACKAGE_DEP = "@com_google_fhir//spec:fhir_r4"
 PROTO_GENERATOR = "@com_google_fhir//java/com/google/fhir/protogen:ProtoGenerator"
 PROFILE_GENERATOR = "@com_google_fhir//java/com/google/fhir/protogen:ProfileGenerator"
@@ -151,8 +152,7 @@ def gen_fhir_protos(
             "-Dgolden_dir=" + src_dir,
             "-Xmx4096M",
         ]
-
-        native.java_test(
+        java_test(
             name = "GeneratedProtoTest_" + name,
             size = "medium",
             srcs = ["//external:GeneratedProtoTest.java"],
@@ -294,7 +294,7 @@ def _get_tar_for_pkg(pkg):
     return pkg + "_package.tgz"
 
 def _proto_generator_with_runtime_deps_on_existing_protos(name, golden_java_protos_rules):
-    native.java_binary(
+    java_binary(
         name = name,
         main_class = "com.google.fhir.protogen.ProtoGeneratorMain",
         runtime_deps = golden_java_protos_rules +

cc/google/fhir/BUILD

@@ -462,6 +462,7 @@ cc_library(
         ":util",
         "//cc/google/fhir/json:fhir_json",
         "//cc/google/fhir/status",
+        "//cc/google/fhir/status:statusor",
         "@com_google_absl//absl/status",
         "@com_google_absl//absl/status:statusor",
         "@com_google_absl//absl/strings",

cc/google/fhir/fhir_path/BUILD

@@ -120,9 +120,7 @@ cc_library(
         "fhir_path_types.h",
     ],
     strip_include_prefix = "//cc/",
-    visibility = [
-        "//visibility:private",  # Only private by automation, not intent. Owner may accept CLs adding visibility. See go/scheuklappen#explicit-private.
-    ],
+    visibility = ["//visibility:private"],
     deps = [
         "//cc/google/fhir:annotations",
         "//cc/google/fhir:fhir_types",
@@ -143,9 +141,7 @@ cc_library(
         "utils.h",
     ],
     strip_include_prefix = "//cc/",
-    visibility = [
-        "//visibility:private",  # Only private by automation, not intent. Owner may accept CLs adding visibility. See go/scheuklappen#explicit-private.
-    ],
+    visibility = ["//visibility:private"],
     deps = [
         "//cc/google/fhir:annotations",
         "//cc/google/fhir:references",

cc/google/fhir/fhir_path/fhir_path.cc

@@ -49,13 +49,15 @@
 #include "google/fhir/fhir_path/fhir_path_types.h"
 #include "google/fhir/fhir_path/utils.h"
 #include "google/fhir/fhir_types.h"
+#include "google/fhir/primitive_handler.h"
 #include "google/fhir/proto_util.h"
 #include "google/fhir/status/status.h"
 #include "google/fhir/status/statusor.h"
 #include "google/fhir/util.h"
 #include "proto/google/fhir/proto/r4/core/datatypes.pb.h"
 #include "icu4c/source/common/unicode/unistr.h"
 #include "google/protobuf/descriptor.h"
+#include "google/protobuf/message.h"
 
 namespace google {
 namespace fhir {
@@ -3039,7 +3041,8 @@ class ComparisonOperator : public BinaryOperator {
 
     } else if (IsSystemString(*left_result) && IsSystemString(*right_result)) {
       return EvalStringComparison(primitive_handler, left, right);
-    } else if (IsDateTime(*left_result) && IsDateTime(*right_result)) {
+    } else if ((IsInstant(*left_result) || IsDateTime(*left_result)) &&
+               (IsInstant(*right_result) || IsDateTime(*right_result))) {
       return EvalDateTimeComparison(primitive_handler, *left_result,
                                     *right_result);
     } else if (IsSimpleQuantity(*left_result) &&
@@ -3147,12 +3150,33 @@ class ComparisonOperator : public BinaryOperator {
   absl::StatusOr<absl::optional<bool>> EvalDateTimeComparison(
       const PrimitiveHandler* primitive_handler, const Message& left_message,
       const Message& right_message) const {
-    FHIR_ASSIGN_OR_RETURN(
-        DateTimePrecision left_precision,
-        primitive_handler->GetDateTimePrecision(left_message));
-    FHIR_ASSIGN_OR_RETURN(
-        DateTimePrecision right_precision,
-        primitive_handler->GetDateTimePrecision(right_message));
+    const Message* left = &left_message;
+    const Message* right = &right_message;
+    std::vector<std::unique_ptr<const Message>> to_delete;
+    if (IsInstant(left_message)) {
+      FHIR_ASSIGN_OR_RETURN(
+          JsonPrimitive json_primitive,
+          primitive_handler->WrapPrimitiveProto(left_message));
+      json_primitive.value = absl::StripPrefix(json_primitive.value, "\"");
+      json_primitive.value = absl::StripSuffix(json_primitive.value, "\"");
+      FHIR_ASSIGN_OR_RETURN(
+          left, primitive_handler->NewDateTime(json_primitive.value));
+      to_delete.push_back(std::unique_ptr<const Message>(left));
+    }
+    if (IsInstant(right_message)) {
+      FHIR_ASSIGN_OR_RETURN(
+          JsonPrimitive json_primitive,
+          primitive_handler->WrapPrimitiveProto(right_message));
+      json_primitive.value = absl::StripPrefix(json_primitive.value, "\"");
+      json_primitive.value = absl::StripSuffix(json_primitive.value, "\"");
+      FHIR_ASSIGN_OR_RETURN(
+          right, primitive_handler->NewDateTime(json_primitive.value));
+      to_delete.push_back(std::unique_ptr<const Message>(right));
+    }
+    FHIR_ASSIGN_OR_RETURN(DateTimePrecision left_precision,
+                          primitive_handler->GetDateTimePrecision(*left));
+    FHIR_ASSIGN_OR_RETURN(DateTimePrecision right_precision,
+                          primitive_handler->GetDateTimePrecision(*right));
 
     // The FHIRPath spec (http://hl7.org/fhirpath/#comparison) states that "If
     // one value is specified to a different level of precision than the other,
@@ -3164,9 +3188,9 @@ class ComparisonOperator : public BinaryOperator {
     }
 
     FHIR_ASSIGN_OR_RETURN(absl::Time left_time,
-                          primitive_handler->GetDateTimeValue(left_message));
+                          primitive_handler->GetDateTimeValue(*left));
     FHIR_ASSIGN_OR_RETURN(absl::Time right_time,
-                          primitive_handler->GetDateTimeValue(right_message));
+                          primitive_handler->GetDateTimeValue(*right));
 
     // negative if left < right, positive if left > right, 0 if equal
     absl::civil_diff_t time_difference =

cc/google/fhir/fhir_path/fhir_path_test.cc

@@ -2407,6 +2407,30 @@ TYPED_TEST(FhirPathTest, TimeComparison) {
               EvalsToTrue());
 }
 
+TYPED_TEST(FhirPathTest, TimeComparison_Instant) {
+  auto observation = ParseFromString<typename TypeParam::Observation>(R"pb(
+    # 2001-10-28T01:59:00Z
+    meta: {
+      last_updated: {
+        value_us: 1004234340000000
+        timezone: "UTC"
+        precision: MICROSECOND
+      }
+    }
+  )pb");
+  EXPECT_THAT(
+      TestFixture::Evaluate(observation, "meta.lastUpdated = meta.lastUpdated"),
+      EvalsToTrue());
+  EXPECT_THAT(
+      TestFixture::Evaluate(observation, "meta.lastUpdated < meta.lastUpdated"),
+      EvalsToFalse());
+  EXPECT_THAT(
+      TestFixture::Evaluate(observation,
+                            "meta.lastUpdated < @2001-10-28T01:59:10Z and "
+                            "@2001-10-28T01:58:50 < meta.lastUpdated"),
+      EvalsToTrue());
+}
+
 TYPED_TEST(FhirPathTest, TimeCompareDifferentPrecision) {
   using DateTime = typename TypeParam::DateTime;
   using DateTimePrecision = typename TypeParam::DateTime::Precision;

examples/bulkdata/BUILD

@@ -1,9 +1,10 @@
+load("@fhir_bazel_pip_dependencies//:requirements.bzl", "requirement")
+
 # Simple client to download data from FHIR server (using bulk data protocol)
 load(
     "@rules_python//python:python.bzl",
     "py_binary",
 )
-load("@fhir_bazel_pip_dependencies//:requirements.bzl", "requirement")
 
 licenses(["notice"])
 

examples/profiles/BUILD

@@ -1,10 +1,10 @@
+load("//bazel:proto.bzl", "fhir_proto_library")
+load("//bazel:protogen.bzl", "gen_fhir_definitions_and_protos")
+
 package(default_visibility = ["//visibility:public"])
 
 licenses(["notice"])
 
-load("//bazel:protogen.bzl", "gen_fhir_definitions_and_protos")
-load("//bazel:proto.bzl", "fhir_proto_library")
-
 gen_fhir_definitions_and_protos(
     name = "demo",
     additional_proto_imports = [

go/fhirpath/BUILD

@@ -0,0 +1,15 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+licenses(["notice"])
+
+package(default_visibility = ["//visibility:public"])
+
+go_library(
+    name = "fhirpath",
+    srcs = ["visitor.go"],
+    importpath = "github.com/google/fhir/go/fhirpath",
+    deps = [
+        "//go/fhirpath/gen",
+        "@com_github_antrl4_go_antlr//:go_default_library",
+    ],
+)

go/fhirpath/gen/BUILD

@@ -0,0 +1,23 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+licenses(["notice"])
+
+package(default_visibility = ["//visibility:public"])
+
+go_library(
+    name = "gen",
+    srcs = [
+        "doc.go",
+        "fhirpath_base_listener.go",
+        "fhirpath_base_visitor.go",
+        "fhirpath_lexer.go",
+        "fhirpath_listener.go",
+        "fhirpath_parser.go",
+        "fhirpath_visitor.go",
+    ],
+    importpath = "github.com/google/fhir/go/fhirpath/gen",
+    visibility = [
+        "//go/fhirpath:__subpackages__",
+    ],
+    deps = ["@com_github_antrl4_go_antlr//:go_default_library"],
+)

go/fhirpath/gen/doc.go

@@ -0,0 +1,16 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package gen is a FHIRPath parser and lexer generated by Antlr. Do not modify the code in this package
+package gen