diff options
Diffstat (limited to 'third_party/protobuf/3.4.0/src/google/protobuf/compiler/javanano/javanano_helpers.cc')
| -rw-r--r-- | third_party/protobuf/3.4.0/src/google/protobuf/compiler/javanano/javanano_helpers.cc | 591 |
1 files changed, 591 insertions, 0 deletions
diff --git a/third_party/protobuf/3.4.0/src/google/protobuf/compiler/javanano/javanano_helpers.cc b/third_party/protobuf/3.4.0/src/google/protobuf/compiler/javanano/javanano_helpers.cc new file mode 100644 index 0000000000..1927ba12f2 --- /dev/null +++ b/third_party/protobuf/3.4.0/src/google/protobuf/compiler/javanano/javanano_helpers.cc @@ -0,0 +1,591 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// http://code.google.com/p/protobuf/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. + +#include <limits> +#include <vector> + +#include <google/protobuf/compiler/javanano/javanano_helpers.h> +#include <google/protobuf/compiler/javanano/javanano_params.h> +#include <google/protobuf/descriptor.pb.h> +#include <google/protobuf/stubs/hash.h> +#include <google/protobuf/stubs/strutil.h> +#include <google/protobuf/stubs/substitute.h> + +namespace google { +namespace protobuf { +namespace compiler { +namespace javanano { + +const char kThickSeparator[] = + "// ===================================================================\n"; +const char kThinSeparator[] = + "// -------------------------------------------------------------------\n"; + +class RenameKeywords { + private: + hash_set<string> java_keywords_set_; + + public: + RenameKeywords() { + static const char* kJavaKeywordsList[] = { + // Reserved Java Keywords + "abstract", "assert", "boolean", "break", "byte", "case", "catch", + "char", "class", "const", "continue", "default", "do", "double", "else", + "enum", "extends", "final", "finally", "float", "for", "goto", "if", + "implements", "import", "instanceof", "int", "interface", "long", + "native", "new", "package", "private", "protected", "public", "return", + "short", "static", "strictfp", "super", "switch", "synchronized", + "this", "throw", "throws", "transient", "try", "void", "volatile", "while", + + // Reserved Keywords for Literals + "false", "null", "true" + }; + + for (int i = 0; i < GOOGLE_ARRAYSIZE(kJavaKeywordsList); i++) { + java_keywords_set_.insert(kJavaKeywordsList[i]); + } + } + + // Used to rename the a field name if it's a java keyword. Specifically + // this is used to rename the ["name"] or ["capitalized_name"] field params. + // (http://docs.oracle.com/javase/tutorial/java/nutsandbolts/_keywords.html) + string RenameJavaKeywordsImpl(const string& input) { + string result = input; + + if (java_keywords_set_.find(result) != java_keywords_set_.end()) { + result += "_"; + } + + return result; + } + +}; + +static RenameKeywords sRenameKeywords; + +namespace { + +const char* kDefaultPackage = ""; + +const string& FieldName(const FieldDescriptor* field) { + // Groups are hacky: The name of the field is just the lower-cased name + // of the group type. In Java, though, we would like to retain the original + // capitalization of the type name. + if (field->type() == FieldDescriptor::TYPE_GROUP) { + return field->message_type()->name(); + } else { + return field->name(); + } +} + +string UnderscoresToCamelCaseImpl(const string& input, bool cap_next_letter) { + string result; + // Note: I distrust ctype.h due to locales. + for (int i = 0; i < input.size(); i++) { + if ('a' <= input[i] && input[i] <= 'z') { + if (cap_next_letter) { + result += input[i] + ('A' - 'a'); + } else { + result += input[i]; + } + cap_next_letter = false; + } else if ('A' <= input[i] && input[i] <= 'Z') { + if (i == 0 && !cap_next_letter) { + // Force first letter to lower-case unless explicitly told to + // capitalize it. + result += input[i] + ('a' - 'A'); + } else { + // Capital letters after the first are left as-is. + result += input[i]; + } + cap_next_letter = false; + } else if ('0' <= input[i] && input[i] <= '9') { + result += input[i]; + cap_next_letter = true; + } else { + cap_next_letter = true; + } + } + return result; +} + +} // namespace + +string UnderscoresToCamelCase(const FieldDescriptor* field) { + return UnderscoresToCamelCaseImpl(FieldName(field), false); +} + +string UnderscoresToCapitalizedCamelCase(const FieldDescriptor* field) { + return UnderscoresToCamelCaseImpl(FieldName(field), true); +} + +string UnderscoresToCamelCase(const MethodDescriptor* method) { + return UnderscoresToCamelCaseImpl(method->name(), false); +} + +string UnderscoresToCamelCase(const OneofDescriptor* oneof) { + return UnderscoresToCamelCaseImpl(oneof->name(), false); +} + +string UnderscoresToCapitalizedCamelCase(const OneofDescriptor* oneof) { + return UnderscoresToCamelCaseImpl(oneof->name(), true); +} + +string RenameJavaKeywords(const string& input) { + return sRenameKeywords.RenameJavaKeywordsImpl(input); +} + +string StripProto(const string& filename) { + if (HasSuffixString(filename, ".protodevel")) { + return StripSuffixString(filename, ".protodevel"); + } else { + return StripSuffixString(filename, ".proto"); + } +} + +string FileClassName(const Params& params, const FileDescriptor* file) { + if (params.has_java_outer_classname(file->name())) { + return params.java_outer_classname(file->name()); + } else { + // Use the filename itself with underscores removed + // and a CamelCase style name. + string basename; + string::size_type last_slash = file->name().find_last_of('/'); + if (last_slash == string::npos) { + basename = file->name(); + } else { + basename = file->name().substr(last_slash + 1); + } + return UnderscoresToCamelCaseImpl(StripProto(basename), true); + } +} + +string FileJavaPackage(const Params& params, const FileDescriptor* file) { + if (params.has_java_package(file->name())) { + return params.java_package(file->name()); + } else { + string result = kDefaultPackage; + if (!file->package().empty()) { + if (!result.empty()) result += '.'; + result += file->package(); + } + + if (!result.empty()) { + result += "."; + } + result += "nano"; + + return result; + } +} + +bool IsOuterClassNeeded(const Params& params, const FileDescriptor* file) { + // If java_multiple_files is false, the outer class is always needed. + if (!params.java_multiple_files(file->name())) { + return true; + } + + // File-scope extensions need the outer class as the scope. + if (file->extension_count() != 0) { + return true; + } + + // If container interfaces are not generated, file-scope enums need the + // outer class as the scope. + if (file->enum_type_count() != 0 && !params.java_enum_style()) { + return true; + } + + return false; +} + +string ToJavaName(const Params& params, const string& name, bool is_class, + const Descriptor* parent, const FileDescriptor* file) { + string result; + if (parent != NULL) { + result.append(ClassName(params, parent)); + } else if (is_class && params.java_multiple_files(file->name())) { + result.append(FileJavaPackage(params, file)); + } else { + result.append(ClassName(params, file)); + } + if (!result.empty()) result.append(1, '.'); + result.append(RenameJavaKeywords(name)); + return result; +} + +string ClassName(const Params& params, const FileDescriptor* descriptor) { + string result = FileJavaPackage(params, descriptor); + if (!result.empty()) result += '.'; + result += FileClassName(params, descriptor); + return result; +} + +string ClassName(const Params& params, const EnumDescriptor* descriptor) { + const Descriptor* parent = descriptor->containing_type(); + // When using Java enum style, an enum's class name contains the enum name. + // Use the standard ToJavaName translation. + if (params.java_enum_style()) { + return ToJavaName(params, descriptor->name(), true, parent, + descriptor->file()); + } + // Otherwise the enum members are accessed from the enclosing class. + if (parent != NULL) { + return ClassName(params, parent); + } else { + return ClassName(params, descriptor->file()); + } +} + +string FieldConstantName(const FieldDescriptor *field) { + string name = field->name() + "_FIELD_NUMBER"; + UpperString(&name); + return name; +} + +string FieldDefaultConstantName(const FieldDescriptor *field) { + return "_" + RenameJavaKeywords(UnderscoresToCamelCase(field)) + "Default"; +} + +void PrintFieldComment(io::Printer* printer, const FieldDescriptor* field) { + // We don't want to print group bodies so we cut off after the first line + // (the second line for extensions). + string def = field->DebugString(); + string::size_type first_line_end = def.find_first_of('\n'); + printer->Print("// $def$\n", + "def", def.substr(0, first_line_end)); + if (field->is_extension()) { + string::size_type second_line_start = first_line_end + 1; + string::size_type second_line_length = + def.find('\n', second_line_start) - second_line_start; + printer->Print("// $def$\n", + "def", def.substr(second_line_start, second_line_length)); + } +} + +JavaType GetJavaType(FieldDescriptor::Type field_type) { + switch (field_type) { + case FieldDescriptor::TYPE_INT32: + case FieldDescriptor::TYPE_UINT32: + case FieldDescriptor::TYPE_SINT32: + case FieldDescriptor::TYPE_FIXED32: + case FieldDescriptor::TYPE_SFIXED32: + return JAVATYPE_INT; + + case FieldDescriptor::TYPE_INT64: + case FieldDescriptor::TYPE_UINT64: + case FieldDescriptor::TYPE_SINT64: + case FieldDescriptor::TYPE_FIXED64: + case FieldDescriptor::TYPE_SFIXED64: + return JAVATYPE_LONG; + + case FieldDescriptor::TYPE_FLOAT: + return JAVATYPE_FLOAT; + + case FieldDescriptor::TYPE_DOUBLE: + return JAVATYPE_DOUBLE; + + case FieldDescriptor::TYPE_BOOL: + return JAVATYPE_BOOLEAN; + + case FieldDescriptor::TYPE_STRING: + return JAVATYPE_STRING; + + case FieldDescriptor::TYPE_BYTES: + return JAVATYPE_BYTES; + + case FieldDescriptor::TYPE_ENUM: + return JAVATYPE_ENUM; + + case FieldDescriptor::TYPE_GROUP: + case FieldDescriptor::TYPE_MESSAGE: + return JAVATYPE_MESSAGE; + + // No default because we want the compiler to complain if any new + // types are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return JAVATYPE_INT; +} + +string PrimitiveTypeName(JavaType type) { + switch (type) { + case JAVATYPE_INT : return "int"; + case JAVATYPE_LONG : return "long"; + case JAVATYPE_FLOAT : return "float"; + case JAVATYPE_DOUBLE : return "double"; + case JAVATYPE_BOOLEAN: return "boolean"; + case JAVATYPE_STRING : return "java.lang.String"; + case JAVATYPE_BYTES : return "byte[]"; + case JAVATYPE_ENUM : return "int"; + case JAVATYPE_MESSAGE: return ""; + + // No default because we want the compiler to complain if any new + // JavaTypes are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return ""; +} + +string BoxedPrimitiveTypeName(JavaType type) { + switch (type) { + case JAVATYPE_INT : return "java.lang.Integer"; + case JAVATYPE_LONG : return "java.lang.Long"; + case JAVATYPE_FLOAT : return "java.lang.Float"; + case JAVATYPE_DOUBLE : return "java.lang.Double"; + case JAVATYPE_BOOLEAN: return "java.lang.Boolean"; + case JAVATYPE_STRING : return "java.lang.String"; + case JAVATYPE_BYTES : return "byte[]"; + case JAVATYPE_ENUM : return "java.lang.Integer"; + case JAVATYPE_MESSAGE: return ""; + + // No default because we want the compiler to complain if any new + // JavaTypes are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return ""; +} + +string EmptyArrayName(const Params& params, const FieldDescriptor* field) { + switch (GetJavaType(field)) { + case JAVATYPE_INT : return "com.google.protobuf.nano.WireFormatNano.EMPTY_INT_ARRAY"; + case JAVATYPE_LONG : return "com.google.protobuf.nano.WireFormatNano.EMPTY_LONG_ARRAY"; + case JAVATYPE_FLOAT : return "com.google.protobuf.nano.WireFormatNano.EMPTY_FLOAT_ARRAY"; + case JAVATYPE_DOUBLE : return "com.google.protobuf.nano.WireFormatNano.EMPTY_DOUBLE_ARRAY"; + case JAVATYPE_BOOLEAN: return "com.google.protobuf.nano.WireFormatNano.EMPTY_BOOLEAN_ARRAY"; + case JAVATYPE_STRING : return "com.google.protobuf.nano.WireFormatNano.EMPTY_STRING_ARRAY"; + case JAVATYPE_BYTES : return "com.google.protobuf.nano.WireFormatNano.EMPTY_BYTES_ARRAY"; + case JAVATYPE_ENUM : return "com.google.protobuf.nano.WireFormatNano.EMPTY_INT_ARRAY"; + case JAVATYPE_MESSAGE: return ClassName(params, field->message_type()) + ".EMPTY_ARRAY"; + + // No default because we want the compiler to complain if any new + // JavaTypes are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return ""; +} + +string DefaultValue(const Params& params, const FieldDescriptor* field) { + if (field->label() == FieldDescriptor::LABEL_REPEATED) { + return EmptyArrayName(params, field); + } + + if (params.use_reference_types_for_primitives()) { + if (params.reftypes_primitive_enums() + && field->cpp_type() == FieldDescriptor::CPPTYPE_ENUM) { + return "Integer.MIN_VALUE"; + } + return "null"; + } + + // Switch on cpp_type since we need to know which default_value_* method + // of FieldDescriptor to call. + switch (field->cpp_type()) { + case FieldDescriptor::CPPTYPE_INT32: + return SimpleItoa(field->default_value_int32()); + case FieldDescriptor::CPPTYPE_UINT32: + // Need to print as a signed int since Java has no unsigned. + return SimpleItoa(static_cast<int32>(field->default_value_uint32())); + case FieldDescriptor::CPPTYPE_INT64: + return SimpleItoa(field->default_value_int64()) + "L"; + case FieldDescriptor::CPPTYPE_UINT64: + return SimpleItoa(static_cast<int64>(field->default_value_uint64())) + + "L"; + case FieldDescriptor::CPPTYPE_DOUBLE: { + double value = field->default_value_double(); + if (value == std::numeric_limits<double>::infinity()) { + return "Double.POSITIVE_INFINITY"; + } else if (value == -std::numeric_limits<double>::infinity()) { + return "Double.NEGATIVE_INFINITY"; + } else if (value != value) { + return "Double.NaN"; + } else { + return SimpleDtoa(value) + "D"; + } + } + case FieldDescriptor::CPPTYPE_FLOAT: { + float value = field->default_value_float(); + if (value == std::numeric_limits<float>::infinity()) { + return "Float.POSITIVE_INFINITY"; + } else if (value == -std::numeric_limits<float>::infinity()) { + return "Float.NEGATIVE_INFINITY"; + } else if (value != value) { + return "Float.NaN"; + } else { + return SimpleFtoa(value) + "F"; + } + } + case FieldDescriptor::CPPTYPE_BOOL: + return field->default_value_bool() ? "true" : "false"; + case FieldDescriptor::CPPTYPE_STRING: + if (!field->default_value_string().empty()) { + // Point it to the static final in the generated code. + return FieldDefaultConstantName(field); + } else { + if (field->type() == FieldDescriptor::TYPE_BYTES) { + return "com.google.protobuf.nano.WireFormatNano.EMPTY_BYTES"; + } else { + return "\"\""; + } + } + + case FieldDescriptor::CPPTYPE_ENUM: + return ClassName(params, field->enum_type()) + "." + + RenameJavaKeywords(field->default_value_enum()->name()); + + case FieldDescriptor::CPPTYPE_MESSAGE: + return "null"; + + // No default because we want the compiler to complain if any new + // types are added. + } + + GOOGLE_LOG(FATAL) << "Can't get here."; + return ""; +} + + +static const char* kBitMasks[] = { + "0x00000001", + "0x00000002", + "0x00000004", + "0x00000008", + "0x00000010", + "0x00000020", + "0x00000040", + "0x00000080", + + "0x00000100", + "0x00000200", + "0x00000400", + "0x00000800", + "0x00001000", + "0x00002000", + "0x00004000", + "0x00008000", + + "0x00010000", + "0x00020000", + "0x00040000", + "0x00080000", + "0x00100000", + "0x00200000", + "0x00400000", + "0x00800000", + + "0x01000000", + "0x02000000", + "0x04000000", + "0x08000000", + "0x10000000", + "0x20000000", + "0x40000000", + "0x80000000", +}; + +string GetBitFieldName(int index) { + string var_name = "bitField"; + var_name += SimpleItoa(index); + var_name += "_"; + return var_name; +} + +string GetBitFieldNameForBit(int bit_index) { + return GetBitFieldName(bit_index / 32); +} + +string GenerateGetBit(int bit_index) { + string var_name = GetBitFieldNameForBit(bit_index); + int bit_in_var_index = bit_index % 32; + + string mask = kBitMasks[bit_in_var_index]; + string result = "((" + var_name + " & " + mask + ") != 0)"; + return result; +} + +string GenerateSetBit(int bit_index) { + string var_name = GetBitFieldNameForBit(bit_index); + int bit_in_var_index = bit_index % 32; + + string mask = kBitMasks[bit_in_var_index]; + string result = var_name + " |= " + mask; + return result; +} + +string GenerateClearBit(int bit_index) { + string var_name = GetBitFieldNameForBit(bit_index); + int bit_in_var_index = bit_index % 32; + + string mask = kBitMasks[bit_in_var_index]; + string result = var_name + " = (" + var_name + " & ~" + mask + ")"; + return result; +} + +string GenerateDifferentBit(int bit_index) { + string var_name = GetBitFieldNameForBit(bit_index); + int bit_in_var_index = bit_index % 32; + + string mask = kBitMasks[bit_in_var_index]; + string result = "((" + var_name + " & " + mask + + ") != (other." + var_name + " & " + mask + "))"; + return result; +} + +void SetBitOperationVariables(const string name, + int bitIndex, std::map<string, string>* variables) { + (*variables)["get_" + name] = GenerateGetBit(bitIndex); + (*variables)["set_" + name] = GenerateSetBit(bitIndex); + (*variables)["clear_" + name] = GenerateClearBit(bitIndex); + (*variables)["different_" + name] = GenerateDifferentBit(bitIndex); +} + +bool HasMapField(const Descriptor* descriptor) { + for (int i = 0; i < descriptor->field_count(); ++i) { + const FieldDescriptor* field = descriptor->field(i); + if (field->type() == FieldDescriptor::TYPE_MESSAGE && + IsMapEntry(field->message_type())) { + return true; + } + } + return false; +} + +} // namespace javanano +} // namespace compiler +} // namespace protobuf +} // namespace google |