stats/stats_log_api_gen/utils.cpp - platform/frameworks/proto_logging - Git at Google

 /*
  * Copyright (C) 2019, The Android Open Source Project
  *
  * 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.
  */

 #include "utils.h"

 namespace android {
 namespace stats_log_api_gen {

 /**
  * Inlining this method because "android-base/strings.h" is not available on
  * google3.
  */
 static vector<string> Split(const string& s, const string& delimiters) {
     GOOGLE_CHECK_NE(delimiters.size(), 0U);

     vector<string> result;

     size_t base = 0;
     size_t found;
     while (true) {
         found = s.find_first_of(delimiters, base);
         result.push_back(s.substr(base, found - base));
         if (found == s.npos) break;
         base = found + 1;
     }

     return result;
 }

 void build_non_chained_decl_map(const Atoms& atoms,
                                 std::map<int, AtomDeclSet::const_iterator>* decl_map) {
     for (AtomDeclSet::const_iterator atomIt = atoms.non_chained_decls.begin();
          atomIt != atoms.non_chained_decls.end(); atomIt++) {
         decl_map->insert(std::make_pair((*atomIt)->code, atomIt));
     }
 }

 const map<AnnotationId, string>& get_annotation_id_constants() {
     static const map<AnnotationId, string>* ANNOTATION_ID_CONSTANTS =
         new map<AnnotationId, string>{
             {ANNOTATION_ID_IS_UID, "ANNOTATION_ID_IS_UID"},
             {ANNOTATION_ID_TRUNCATE_TIMESTAMP, "ANNOTATION_ID_TRUNCATE_TIMESTAMP"},
             {ANNOTATION_ID_PRIMARY_FIELD, "ANNOTATION_ID_PRIMARY_FIELD"},
             {ANNOTATION_ID_EXCLUSIVE_STATE, "ANNOTATION_ID_EXCLUSIVE_STATE"},
             {ANNOTATION_ID_PRIMARY_FIELD_FIRST_UID, "ANNOTATION_ID_PRIMARY_FIELD_FIRST_UID"},
             {ANNOTATION_ID_DEFAULT_STATE, "ANNOTATION_ID_DEFAULT_STATE"},
             {ANNOTATION_ID_TRIGGER_STATE_RESET, "ANNOTATION_ID_TRIGGER_STATE_RESET"},
             {ANNOTATION_ID_STATE_NESTED, "ANNOTATION_ID_STATE_NESTED"},
         };

     return *ANNOTATION_ID_CONSTANTS;
 }

 /**
  * Turn lower and camel case into upper case with underscores.
  */
 string make_constant_name(const string& str) {
     string result;
     const int N = str.size();
     bool underscore_next = false;
     for (int i = 0; i < N; i++) {
         char c = str[i];
         if (c >= 'A' && c <= 'Z') {
             if (underscore_next) {
                 result += '_';
                 underscore_next = false;
             }
         } else if (c >= 'a' && c <= 'z') {
             c = 'A' + c - 'a';
             underscore_next = true;
         } else if (c == '_') {
             underscore_next = false;
         }
         result += c;
     }
     return result;
 }

 const char* cpp_type_name(java_type_t type) {
     switch (type) {
         case JAVA_TYPE_BOOLEAN:
             return "bool";
         case JAVA_TYPE_INT:  // Fallthrough.
         case JAVA_TYPE_ENUM:
             return "int32_t";
         case JAVA_TYPE_LONG:
             return "int64_t";
         case JAVA_TYPE_FLOAT:
             return "float";
         case JAVA_TYPE_DOUBLE:
             return "double";
         case JAVA_TYPE_STRING:
             return "char const*";
         case JAVA_TYPE_BYTE_ARRAY:
             return "const BytesField&";
         case JAVA_TYPE_BOOLEAN_ARRAY:
             return "const bool*";
         case JAVA_TYPE_INT_ARRAY:  // Fallthrough.
         case JAVA_TYPE_ENUM_ARRAY:
             return "const std::vector<int32_t>&";
         case JAVA_TYPE_LONG_ARRAY:
             return "const std::vector<int64_t>&";
         case JAVA_TYPE_FLOAT_ARRAY:
             return "const std::vector<float>&";
         case JAVA_TYPE_STRING_ARRAY:
             return "const std::vector<char const*>&";
         case JAVA_TYPE_DOUBLE_ARRAY:
             return "const std::vector<double>&";
         default:
             return "UNKNOWN";
     }
 }

 const char* java_type_name(java_type_t type) {
     switch (type) {
         case JAVA_TYPE_BOOLEAN:
             return "boolean";
         case JAVA_TYPE_INT:  // Fallthrough.
         case JAVA_TYPE_ENUM:
             return "int";
         case JAVA_TYPE_LONG:
             return "long";
         case JAVA_TYPE_FLOAT:
             return "float";
         case JAVA_TYPE_DOUBLE:
             return "double";
         case JAVA_TYPE_STRING:
             return "java.lang.String";
         case JAVA_TYPE_BYTE_ARRAY:
             return "byte[]";
         case JAVA_TYPE_BOOLEAN_ARRAY:
             return "boolean[]";
         case JAVA_TYPE_INT_ARRAY:  // Fallthrough.
         case JAVA_TYPE_ENUM_ARRAY:
             return "int[]";
         case JAVA_TYPE_LONG_ARRAY:
             return "long[]";
         case JAVA_TYPE_FLOAT_ARRAY:
             return "float[]";
         case JAVA_TYPE_STRING_ARRAY:
             return "java.lang.String[]";
         case JAVA_TYPE_DOUBLE_ARRAY:
             return "double[]";
         default:
             return "UNKNOWN";
     }
 }

 // Does not include AttributionChain type.
 bool is_repeated_field(java_type_t type) {
     switch (type) {
         case JAVA_TYPE_BOOLEAN_ARRAY:
         case JAVA_TYPE_INT_ARRAY:
         case JAVA_TYPE_FLOAT_ARRAY:
         case JAVA_TYPE_LONG_ARRAY:
         case JAVA_TYPE_STRING_ARRAY:
         case JAVA_TYPE_ENUM_ARRAY:
             return true;
         default:
             return false;
     }
 }

 // Native
 // Writes namespaces for the cpp and header files, returning the number of
 // namespaces written.
 void write_namespace(FILE* out, const string& cppNamespaces) {
     vector<string> cppNamespaceVec = Split(cppNamespaces, ",");
     for (const string& cppNamespace : cppNamespaceVec) {
         fprintf(out, "namespace %s {\n", cppNamespace.c_str());
     }
 }

 // Writes namespace closing brackets for cpp and header files.
 void write_closing_namespace(FILE* out, const string& cppNamespaces) {
     vector<string> cppNamespaceVec = Split(cppNamespaces, ",");
     for (auto it = cppNamespaceVec.rbegin(); it != cppNamespaceVec.rend(); ++it) {
         fprintf(out, "} // namespace %s\n", it->c_str());
     }
 }

 static void write_cpp_usage(FILE* out, const string& method_name, const string& atom_code_name,
                             const shared_ptr<AtomDecl> atom, const AtomDecl& attributionDecl) {
     fprintf(out, "     * Usage: %s(StatsLog.%s", method_name.c_str(), atom_code_name.c_str());

     for (vector<AtomField>::const_iterator field = atom->fields.begin();
          field != atom->fields.end(); field++) {
         if (field->javaType == JAVA_TYPE_ATTRIBUTION_CHAIN) {
             for (const auto& chainField : attributionDecl.fields) {
                 if (chainField.javaType == JAVA_TYPE_STRING) {
                     fprintf(out, ", const std::vector<%s>& %s", cpp_type_name(chainField.javaType),
                             chainField.name.c_str());
                 } else {
                     fprintf(out, ", const %s* %s, size_t %s_length",
                             cpp_type_name(chainField.javaType), chainField.name.c_str(),
                             chainField.name.c_str());
                 }
             }
         } else {
             fprintf(out, ", %s %s", cpp_type_name(field->javaType), field->name.c_str());
         }
     }
     fprintf(out, ");\n");
 }

 void write_native_atom_constants(FILE* out, const Atoms& atoms, const AtomDecl& attributionDecl) {
     fprintf(out, "/**\n");
     fprintf(out, " * Constants for atom codes.\n");
     fprintf(out, " */\n");
     fprintf(out, "enum {\n");

     std::map<int, AtomDeclSet::const_iterator> atom_code_to_non_chained_decl_map;
     build_non_chained_decl_map(atoms, &atom_code_to_non_chained_decl_map);

     size_t i = 0;
     // Print atom constants
     for (AtomDeclSet::const_iterator atomIt = atoms.decls.begin(); atomIt != atoms.decls.end();
          atomIt++) {
         string constant = make_constant_name((*atomIt)->name);
         fprintf(out, "\n");
         fprintf(out, "    /**\n");
         fprintf(out, "     * %s %s\n", (*atomIt)->message.c_str(), (*atomIt)->name.c_str());
         write_cpp_usage(out, "stats_write", constant, *atomIt, attributionDecl);

         auto non_chained_decl = atom_code_to_non_chained_decl_map.find((*atomIt)->code);
         if (non_chained_decl != atom_code_to_non_chained_decl_map.end()) {
             write_cpp_usage(out, "stats_write_non_chained", constant, *non_chained_decl->second,
                             attributionDecl);
         }
         fprintf(out, "     */\n");
         char const* const comma = (i == atoms.decls.size() - 1) ? "" : ",";
         fprintf(out, "    %s = %d%s\n", constant.c_str(), (*atomIt)->code, comma);
         i++;
     }
     fprintf(out, "\n");
     fprintf(out, "};\n");
     fprintf(out, "\n");
 }

 // Java
 void write_java_atom_codes(FILE* out, const Atoms& atoms) {
     fprintf(out, "    // Constants for atom codes.\n");

     std::map<int, AtomDeclSet::const_iterator> atom_code_to_non_chained_decl_map;
     build_non_chained_decl_map(atoms, &atom_code_to_non_chained_decl_map);

     // Print constants for the atom codes.
     for (AtomDeclSet::const_iterator atomIt = atoms.decls.begin(); atomIt != atoms.decls.end();
          atomIt++) {
         string constant = make_constant_name((*atomIt)->name);
         fprintf(out, "\n");
         fprintf(out, "    /**\n");
         fprintf(out, "     * %s %s<br>\n", (*atomIt)->message.c_str(), (*atomIt)->name.c_str());
         write_java_usage(out, "write", constant, **atomIt);
         auto non_chained_decl = atom_code_to_non_chained_decl_map.find((*atomIt)->code);
         if (non_chained_decl != atom_code_to_non_chained_decl_map.end()) {
             write_java_usage(out, "write_non_chained", constant, **(non_chained_decl->second));
         }
         fprintf(out, "     */\n");
         fprintf(out, "    public static final int %s = %d;\n", constant.c_str(), (*atomIt)->code);
     }
     fprintf(out, "\n");
 }

 void write_java_enum_values(FILE* out, const Atoms& atoms) {
     fprintf(out, "    // Constants for enum values.\n\n");
     for (AtomDeclSet::const_iterator atomIt = atoms.decls.begin(); atomIt != atoms.decls.end();
          atomIt++) {
         for (vector<AtomField>::const_iterator field = (*atomIt)->fields.begin();
              field != (*atomIt)->fields.end(); field++) {
             if (field->javaType == JAVA_TYPE_ENUM) {
                 fprintf(out, "    // Values for %s.%s\n", (*atomIt)->message.c_str(),
                         field->name.c_str());
                 for (map<int, string>::const_iterator value = field->enumValues.begin();
                      value != field->enumValues.end(); value++) {
                     fprintf(out, "    public static final int %s__%s__%s = %d;\n",
                             make_constant_name((*atomIt)->message).c_str(),
                             make_constant_name(field->name).c_str(),
                             make_constant_name(value->second).c_str(), value->first);
                 }
                 fprintf(out, "\n");
             }
         }
     }
 }

 void write_java_usage(FILE* out, const string& method_name, const string& atom_code_name,
                       const AtomDecl& atom) {
     fprintf(out, "     * Usage: StatsLog.%s(StatsLog.%s", method_name.c_str(),
             atom_code_name.c_str());
     for (vector<AtomField>::const_iterator field = atom.fields.begin(); field != atom.fields.end();
          field++) {
         if (field->javaType == JAVA_TYPE_ATTRIBUTION_CHAIN) {
             fprintf(out, ", android.os.WorkSource workSource");
         } else if (field->javaType == JAVA_TYPE_BYTE_ARRAY) {
             fprintf(out, ", byte[] %s", field->name.c_str());
         } else {
             fprintf(out, ", %s %s", java_type_name(field->javaType), field->name.c_str());
         }
     }
     fprintf(out, ");<br>\n");
 }

 int write_java_non_chained_methods(FILE* out, const SignatureInfoMap& signatureInfoMap) {
     for (auto signatureInfoMapIt = signatureInfoMap.begin();
          signatureInfoMapIt != signatureInfoMap.end(); signatureInfoMapIt++) {
         // Print method signature.
         fprintf(out, "    public static void write_non_chained(int code");
         vector<java_type_t> signature = signatureInfoMapIt->first;
         int argIndex = 1;
         for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
              arg++) {
             if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
                 fprintf(stderr, "Non chained signatures should not have attribution chains.\n");
                 return 1;
             } else {
                 fprintf(out, ", %s arg%d", java_type_name(*arg), argIndex);
             }
             argIndex++;
         }
         fprintf(out, ") {\n");

         fprintf(out, "        write(code");
         argIndex = 1;
         for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
              arg++) {
             // First two args are uid and tag of attribution chain.
             if (argIndex == 1) {
                 fprintf(out, ", new int[] {arg%d}", argIndex);
             } else if (argIndex == 2) {
                 fprintf(out, ", new java.lang.String[] {arg%d}", argIndex);
             } else {
                 fprintf(out, ", arg%d", argIndex);
             }
             argIndex++;
         }
         fprintf(out, ");\n");
         fprintf(out, "    }\n");
         fprintf(out, "\n");
     }
     return 0;
 }

 int write_java_work_source_methods(FILE* out, const SignatureInfoMap& signatureInfoMap) {
     fprintf(out, "    // WorkSource methods.\n");
     for (auto signatureInfoMapIt = signatureInfoMap.begin();
          signatureInfoMapIt != signatureInfoMap.end(); signatureInfoMapIt++) {
         vector<java_type_t> signature = signatureInfoMapIt->first;
         // Determine if there is Attribution in this signature.
         int attributionArg = -1;
         int argIndexMax = 0;
         for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
              arg++) {
             argIndexMax++;
             if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
                 if (attributionArg > -1) {
                     fprintf(stderr, "An atom contains multiple AttributionNode fields.\n");
                     fprintf(stderr, "This is not supported. Aborting WorkSource method writing.\n");
                     fprintf(out,
                             "\n// Invalid for WorkSource: more than one attribution "
                             "chain.\n");
                     return 1;
                 }
                 attributionArg = argIndexMax;
             }
         }
         if (attributionArg < 0) {
             continue;
         }

         fprintf(out, "\n");
         // Method header (signature)
         fprintf(out, "    public static void write(int code");
         int argIndex = 1;
         for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
              arg++) {
             if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
                 fprintf(out, ", android.os.WorkSource ws");
             } else {
                 fprintf(out, ", %s arg%d", java_type_name(*arg), argIndex);
             }
             argIndex++;
         }
         fprintf(out, ") {\n");

         // write_non_chained() component. TODO: Remove when flat uids are no longer
         // needed.
         fprintf(out, "        for (int i = 0; i < ws.size(); ++i) {\n");
         fprintf(out, "            write_non_chained(code");
         for (int argIndex = 1; argIndex <= argIndexMax; argIndex++) {
             if (argIndex == attributionArg) {
                 fprintf(out, ", ws.getUid(i), ws.getPackageName(i)");
             } else {
                 fprintf(out, ", arg%d", argIndex);
             }
         }
         fprintf(out, ");\n");
         fprintf(out, "        }\n");  // close for-loop

         // write() component.
         fprintf(out,
                 "        java.util.List<android.os.WorkSource.WorkChain> workChains = "
                 "ws.getWorkChains();\n");
         fprintf(out, "        if (workChains != null) {\n");
         fprintf(out,
                 "            for (android.os.WorkSource.WorkChain wc : workChains) "
                 "{\n");
         fprintf(out, "                write(code");
         for (int argIndex = 1; argIndex <= argIndexMax; argIndex++) {
             if (argIndex == attributionArg) {
                 fprintf(out, ", wc.getUids(), wc.getTags()");
             } else {
                 fprintf(out, ", arg%d", argIndex);
             }
         }
         fprintf(out, ");\n");
         fprintf(out, "            }\n");  // close for-loop
         fprintf(out, "        }\n");      // close if
         fprintf(out, "    }\n");          // close method
     }
     return 0;
 }

 }  // namespace stats_log_api_gen
 }  // namespace android
	/*
	* Copyright (C) 2019, The Android Open Source Project
	*
	* 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.
	*/

	#include "utils.h"

	namespace android {
	namespace stats_log_api_gen {

	/**
	* Inlining this method because "android-base/strings.h" is not available on
	* google3.
	*/
	static vector<string> Split(const string& s, const string& delimiters) {
	GOOGLE_CHECK_NE(delimiters.size(), 0U);

	vector<string> result;

	size_t base = 0;
	size_t found;
	while (true) {
	found = s.find_first_of(delimiters, base);
	result.push_back(s.substr(base, found - base));
	if (found == s.npos) break;
	base = found + 1;
	}

	return result;
	}

	void build_non_chained_decl_map(const Atoms& atoms,
	std::map<int, AtomDeclSet::const_iterator>* decl_map) {
	for (AtomDeclSet::const_iterator atomIt = atoms.non_chained_decls.begin();
	atomIt != atoms.non_chained_decls.end(); atomIt++) {
	decl_map->insert(std::make_pair((*atomIt)->code, atomIt));
	}
	}

	const map<AnnotationId, string>& get_annotation_id_constants() {
	static const map<AnnotationId, string>* ANNOTATION_ID_CONSTANTS =
	new map<AnnotationId, string>{
	{ANNOTATION_ID_IS_UID, "ANNOTATION_ID_IS_UID"},
	{ANNOTATION_ID_TRUNCATE_TIMESTAMP, "ANNOTATION_ID_TRUNCATE_TIMESTAMP"},
	{ANNOTATION_ID_PRIMARY_FIELD, "ANNOTATION_ID_PRIMARY_FIELD"},
	{ANNOTATION_ID_EXCLUSIVE_STATE, "ANNOTATION_ID_EXCLUSIVE_STATE"},
	{ANNOTATION_ID_PRIMARY_FIELD_FIRST_UID, "ANNOTATION_ID_PRIMARY_FIELD_FIRST_UID"},
	{ANNOTATION_ID_DEFAULT_STATE, "ANNOTATION_ID_DEFAULT_STATE"},
	{ANNOTATION_ID_TRIGGER_STATE_RESET, "ANNOTATION_ID_TRIGGER_STATE_RESET"},
	{ANNOTATION_ID_STATE_NESTED, "ANNOTATION_ID_STATE_NESTED"},
	};

	return *ANNOTATION_ID_CONSTANTS;
	}

	/**
	* Turn lower and camel case into upper case with underscores.
	*/
	string make_constant_name(const string& str) {
	string result;
	const int N = str.size();
	bool underscore_next = false;
	for (int i = 0; i < N; i++) {
	char c = str[i];
	if (c >= 'A' && c <= 'Z') {
	if (underscore_next) {
	result += '_';
	underscore_next = false;
	}
	} else if (c >= 'a' && c <= 'z') {
	c = 'A' + c - 'a';
	underscore_next = true;
	} else if (c == '_') {
	underscore_next = false;
	}
	result += c;
	}
	return result;
	}

	const char* cpp_type_name(java_type_t type) {
	switch (type) {
	case JAVA_TYPE_BOOLEAN:
	return "bool";
	case JAVA_TYPE_INT: // Fallthrough.
	case JAVA_TYPE_ENUM:
	return "int32_t";
	case JAVA_TYPE_LONG:
	return "int64_t";
	case JAVA_TYPE_FLOAT:
	return "float";
	case JAVA_TYPE_DOUBLE:
	return "double";
	case JAVA_TYPE_STRING:
	return "char const*";
	case JAVA_TYPE_BYTE_ARRAY:
	return "const BytesField&";
	case JAVA_TYPE_BOOLEAN_ARRAY:
	return "const bool*";
	case JAVA_TYPE_INT_ARRAY: // Fallthrough.
	case JAVA_TYPE_ENUM_ARRAY:
	return "const std::vector<int32_t>&";
	case JAVA_TYPE_LONG_ARRAY:
	return "const std::vector<int64_t>&";
	case JAVA_TYPE_FLOAT_ARRAY:
	return "const std::vector<float>&";
	case JAVA_TYPE_STRING_ARRAY:
	return "const std::vector<char const*>&";
	case JAVA_TYPE_DOUBLE_ARRAY:
	return "const std::vector<double>&";
	default:
	return "UNKNOWN";
	}
	}

	const char* java_type_name(java_type_t type) {
	switch (type) {
	case JAVA_TYPE_BOOLEAN:
	return "boolean";
	case JAVA_TYPE_INT: // Fallthrough.
	case JAVA_TYPE_ENUM:
	return "int";
	case JAVA_TYPE_LONG:
	return "long";
	case JAVA_TYPE_FLOAT:
	return "float";
	case JAVA_TYPE_DOUBLE:
	return "double";
	case JAVA_TYPE_STRING:
	return "java.lang.String";
	case JAVA_TYPE_BYTE_ARRAY:
	return "byte[]";
	case JAVA_TYPE_BOOLEAN_ARRAY:
	return "boolean[]";
	case JAVA_TYPE_INT_ARRAY: // Fallthrough.
	case JAVA_TYPE_ENUM_ARRAY:
	return "int[]";
	case JAVA_TYPE_LONG_ARRAY:
	return "long[]";
	case JAVA_TYPE_FLOAT_ARRAY:
	return "float[]";
	case JAVA_TYPE_STRING_ARRAY:
	return "java.lang.String[]";
	case JAVA_TYPE_DOUBLE_ARRAY:
	return "double[]";
	default:
	return "UNKNOWN";
	}
	}

	// Does not include AttributionChain type.
	bool is_repeated_field(java_type_t type) {
	switch (type) {
	case JAVA_TYPE_BOOLEAN_ARRAY:
	case JAVA_TYPE_INT_ARRAY:
	case JAVA_TYPE_FLOAT_ARRAY:
	case JAVA_TYPE_LONG_ARRAY:
	case JAVA_TYPE_STRING_ARRAY:
	case JAVA_TYPE_ENUM_ARRAY:
	return true;
	default:
	return false;
	}
	}

	// Native
	// Writes namespaces for the cpp and header files, returning the number of
	// namespaces written.
	void write_namespace(FILE* out, const string& cppNamespaces) {
	vector<string> cppNamespaceVec = Split(cppNamespaces, ",");
	for (const string& cppNamespace : cppNamespaceVec) {
	fprintf(out, "namespace %s {\n", cppNamespace.c_str());
	}
	}

	// Writes namespace closing brackets for cpp and header files.
	void write_closing_namespace(FILE* out, const string& cppNamespaces) {
	vector<string> cppNamespaceVec = Split(cppNamespaces, ",");
	for (auto it = cppNamespaceVec.rbegin(); it != cppNamespaceVec.rend(); ++it) {
	fprintf(out, "} // namespace %s\n", it->c_str());
	}
	}

	static void write_cpp_usage(FILE* out, const string& method_name, const string& atom_code_name,
	const shared_ptr<AtomDecl> atom, const AtomDecl& attributionDecl) {
	fprintf(out, " * Usage: %s(StatsLog.%s", method_name.c_str(), atom_code_name.c_str());

	for (vector<AtomField>::const_iterator field = atom->fields.begin();
	field != atom->fields.end(); field++) {
	if (field->javaType == JAVA_TYPE_ATTRIBUTION_CHAIN) {
	for (const auto& chainField : attributionDecl.fields) {
	if (chainField.javaType == JAVA_TYPE_STRING) {
	fprintf(out, ", const std::vector<%s>& %s", cpp_type_name(chainField.javaType),
	chainField.name.c_str());
	} else {
	fprintf(out, ", const %s* %s, size_t %s_length",
	cpp_type_name(chainField.javaType), chainField.name.c_str(),
	chainField.name.c_str());
	}
	}
	} else {
	fprintf(out, ", %s %s", cpp_type_name(field->javaType), field->name.c_str());
	}
	}
	fprintf(out, ");\n");
	}

	void write_native_atom_constants(FILE* out, const Atoms& atoms, const AtomDecl& attributionDecl) {
	fprintf(out, "/**\n");
	fprintf(out, " * Constants for atom codes.\n");
	fprintf(out, " */\n");
	fprintf(out, "enum {\n");

	std::map<int, AtomDeclSet::const_iterator> atom_code_to_non_chained_decl_map;
	build_non_chained_decl_map(atoms, &atom_code_to_non_chained_decl_map);

	size_t i = 0;
	// Print atom constants
	for (AtomDeclSet::const_iterator atomIt = atoms.decls.begin(); atomIt != atoms.decls.end();
	atomIt++) {
	string constant = make_constant_name((*atomIt)->name);
	fprintf(out, "\n");
	fprintf(out, " /**\n");
	fprintf(out, " * %s %s\n", (atomIt)->message.c_str(), (atomIt)->name.c_str());
	write_cpp_usage(out, "stats_write", constant, *atomIt, attributionDecl);

	auto non_chained_decl = atom_code_to_non_chained_decl_map.find((*atomIt)->code);
	if (non_chained_decl != atom_code_to_non_chained_decl_map.end()) {
	write_cpp_usage(out, "stats_write_non_chained", constant, *non_chained_decl->second,
	attributionDecl);
	}
	fprintf(out, " */\n");
	char const* const comma = (i == atoms.decls.size() - 1) ? "" : ",";
	fprintf(out, " %s = %d%s\n", constant.c_str(), (*atomIt)->code, comma);
	i++;
	}
	fprintf(out, "\n");
	fprintf(out, "};\n");
	fprintf(out, "\n");
	}

	// Java
	void write_java_atom_codes(FILE* out, const Atoms& atoms) {
	fprintf(out, " // Constants for atom codes.\n");

	std::map<int, AtomDeclSet::const_iterator> atom_code_to_non_chained_decl_map;
	build_non_chained_decl_map(atoms, &atom_code_to_non_chained_decl_map);

	// Print constants for the atom codes.
	for (AtomDeclSet::const_iterator atomIt = atoms.decls.begin(); atomIt != atoms.decls.end();
	atomIt++) {
	string constant = make_constant_name((*atomIt)->name);
	fprintf(out, "\n");
	fprintf(out, " /**\n");
	fprintf(out, " * %s %s<br>\n", (atomIt)->message.c_str(), (atomIt)->name.c_str());
	write_java_usage(out, "write", constant, **atomIt);
	auto non_chained_decl = atom_code_to_non_chained_decl_map.find((*atomIt)->code);
	if (non_chained_decl != atom_code_to_non_chained_decl_map.end()) {
	write_java_usage(out, "write_non_chained", constant, **(non_chained_decl->second));
	}
	fprintf(out, " */\n");
	fprintf(out, " public static final int %s = %d;\n", constant.c_str(), (*atomIt)->code);
	}
	fprintf(out, "\n");
	}

	void write_java_enum_values(FILE* out, const Atoms& atoms) {
	fprintf(out, " // Constants for enum values.\n\n");
	for (AtomDeclSet::const_iterator atomIt = atoms.decls.begin(); atomIt != atoms.decls.end();
	atomIt++) {
	for (vector<AtomField>::const_iterator field = (*atomIt)->fields.begin();
	field != (*atomIt)->fields.end(); field++) {
	if (field->javaType == JAVA_TYPE_ENUM) {
	fprintf(out, " // Values for %s.%s\n", (*atomIt)->message.c_str(),
	field->name.c_str());
	for (map<int, string>::const_iterator value = field->enumValues.begin();
	value != field->enumValues.end(); value++) {
	fprintf(out, " public static final int %s__%s__%s = %d;\n",
	make_constant_name((*atomIt)->message).c_str(),
	make_constant_name(field->name).c_str(),
	make_constant_name(value->second).c_str(), value->first);
	}
	fprintf(out, "\n");
	}
	}
	}
	}

	void write_java_usage(FILE* out, const string& method_name, const string& atom_code_name,
	const AtomDecl& atom) {
	fprintf(out, " * Usage: StatsLog.%s(StatsLog.%s", method_name.c_str(),
	atom_code_name.c_str());
	for (vector<AtomField>::const_iterator field = atom.fields.begin(); field != atom.fields.end();
	field++) {
	if (field->javaType == JAVA_TYPE_ATTRIBUTION_CHAIN) {
	fprintf(out, ", android.os.WorkSource workSource");
	} else if (field->javaType == JAVA_TYPE_BYTE_ARRAY) {
	fprintf(out, ", byte[] %s", field->name.c_str());
	} else {
	fprintf(out, ", %s %s", java_type_name(field->javaType), field->name.c_str());
	}
	}
	fprintf(out, ");<br>\n");
	}

	int write_java_non_chained_methods(FILE* out, const SignatureInfoMap& signatureInfoMap) {
	for (auto signatureInfoMapIt = signatureInfoMap.begin();
	signatureInfoMapIt != signatureInfoMap.end(); signatureInfoMapIt++) {
	// Print method signature.
	fprintf(out, " public static void write_non_chained(int code");
	vector<java_type_t> signature = signatureInfoMapIt->first;
	int argIndex = 1;
	for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
	arg++) {
	if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
	fprintf(stderr, "Non chained signatures should not have attribution chains.\n");
	return 1;
	} else {
	fprintf(out, ", %s arg%d", java_type_name(*arg), argIndex);
	}
	argIndex++;
	}
	fprintf(out, ") {\n");

	fprintf(out, " write(code");
	argIndex = 1;
	for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
	arg++) {
	// First two args are uid and tag of attribution chain.
	if (argIndex == 1) {
	fprintf(out, ", new int[] {arg%d}", argIndex);
	} else if (argIndex == 2) {
	fprintf(out, ", new java.lang.String[] {arg%d}", argIndex);
	} else {
	fprintf(out, ", arg%d", argIndex);
	}
	argIndex++;
	}
	fprintf(out, ");\n");
	fprintf(out, " }\n");
	fprintf(out, "\n");
	}
	return 0;
	}

	int write_java_work_source_methods(FILE* out, const SignatureInfoMap& signatureInfoMap) {
	fprintf(out, " // WorkSource methods.\n");
	for (auto signatureInfoMapIt = signatureInfoMap.begin();
	signatureInfoMapIt != signatureInfoMap.end(); signatureInfoMapIt++) {
	vector<java_type_t> signature = signatureInfoMapIt->first;
	// Determine if there is Attribution in this signature.
	int attributionArg = -1;
	int argIndexMax = 0;
	for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
	arg++) {
	argIndexMax++;
	if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
	if (attributionArg > -1) {
	fprintf(stderr, "An atom contains multiple AttributionNode fields.\n");
	fprintf(stderr, "This is not supported. Aborting WorkSource method writing.\n");
	fprintf(out,
	"\n// Invalid for WorkSource: more than one attribution "
	"chain.\n");
	return 1;
	}
	attributionArg = argIndexMax;
	}
	}
	if (attributionArg < 0) {
	continue;
	}

	fprintf(out, "\n");
	// Method header (signature)
	fprintf(out, " public static void write(int code");
	int argIndex = 1;
	for (vector<java_type_t>::const_iterator arg = signature.begin(); arg != signature.end();
	arg++) {
	if (*arg == JAVA_TYPE_ATTRIBUTION_CHAIN) {
	fprintf(out, ", android.os.WorkSource ws");
	} else {
	fprintf(out, ", %s arg%d", java_type_name(*arg), argIndex);
	}
	argIndex++;
	}
	fprintf(out, ") {\n");

	// write_non_chained() component. TODO: Remove when flat uids are no longer
	// needed.
	fprintf(out, " for (int i = 0; i < ws.size(); ++i) {\n");
	fprintf(out, " write_non_chained(code");
	for (int argIndex = 1; argIndex <= argIndexMax; argIndex++) {
	if (argIndex == attributionArg) {
	fprintf(out, ", ws.getUid(i), ws.getPackageName(i)");
	} else {
	fprintf(out, ", arg%d", argIndex);
	}
	}
	fprintf(out, ");\n");
	fprintf(out, " }\n"); // close for-loop

	// write() component.
	fprintf(out,
	" java.util.List<android.os.WorkSource.WorkChain> workChains = "
	"ws.getWorkChains();\n");
	fprintf(out, " if (workChains != null) {\n");
	fprintf(out,
	" for (android.os.WorkSource.WorkChain wc : workChains) "
	"{\n");
	fprintf(out, " write(code");
	for (int argIndex = 1; argIndex <= argIndexMax; argIndex++) {
	if (argIndex == attributionArg) {
	fprintf(out, ", wc.getUids(), wc.getTags()");
	} else {
	fprintf(out, ", arg%d", argIndex);
	}
	}
	fprintf(out, ");\n");
	fprintf(out, " }\n"); // close for-loop
	fprintf(out, " }\n"); // close if
	fprintf(out, " }\n"); // close method
	}
	return 0;
	}

	} // namespace stats_log_api_gen
	} // namespace android