third_party/protobuf/src/google/protobuf/compiler/java/java

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This source file includes following definitions.
FieldName
UnderscoresToCamelCaseImpl
UnderscoresToCamelCase
UnderscoresToCapitalizedCamelCase
UnderscoresToCamelCase
StripProto
FileClassName
FileJavaPackage
JavaPackageToDir
ToJavaName
ClassName
ClassName
ClassName
ClassName
FieldConstantName
GetType
GetJavaType
BoxedPrimitiveTypeName
AllAscii
DefaultValue
IsDefaultValueJavaDefault
GetBitFieldName
GetBitFieldNameForBit
GenerateGetBitInternal
GenerateSetBitInternal
GenerateGetBit
GenerateSetBit
GenerateClearBit
GenerateGetBitFromLocal
GenerateSetBitToLocal
GenerateGetBitMutableLocal
GenerateSetBitMutableLocal
// 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/java/java_helpers.h>
#include <google/protobuf/descriptor.pb.h>
#include <google/protobuf/stubs/strutil.h>
#include <google/protobuf/stubs/substitute.h>

namespace google {
namespace protobuf {
namespace compiler {
namespace java {

const char kThickSeparator[] =
  "// ===================================================================\n";
const char kThinSeparator[] =
  "// -------------------------------------------------------------------\n";

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 (GetType(field) == 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 StripProto(const string& filename) {
  if (HasSuffixString(filename, ".protodevel")) {
    return StripSuffixString(filename, ".protodevel");
  } else {
    return StripSuffixString(filename, ".proto");
  }
}

string FileClassName(const FileDescriptor* file) {
  if (file->options().has_java_outer_classname()) {
    return file->options().java_outer_classname();
  } else {
    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 FileDescriptor* file) {
  string result;

  if (file->options().has_java_package()) {
    result = file->options().java_package();
  } else {
    result = kDefaultPackage;
    if (!file->package().empty()) {
      if (!result.empty()) result += '.';
      result += file->package();
    }
  }


  return result;
}

string JavaPackageToDir(string package_name) {
  string package_dir =
    StringReplace(package_name, ".", "/", true);
  if (!package_dir.empty()) package_dir += "/";
  return package_dir;
}

string ToJavaName(const string& full_name, const FileDescriptor* file) {
  string result;
  if (file->options().java_multiple_files()) {
    result = FileJavaPackage(file);
  } else {
    result = ClassName(file);
  }
  if (!result.empty()) {
    result += '.';
  }
  if (file->package().empty()) {
    result += full_name;
  } else {
    // Strip the proto package from full_name since we've replaced it with
    // the Java package.
    result += full_name.substr(file->package().size() + 1);
  }
  return result;
}

string ClassName(const Descriptor* descriptor) {
  return ToJavaName(descriptor->full_name(), descriptor->file());
}

string ClassName(const EnumDescriptor* descriptor) {
  return ToJavaName(descriptor->full_name(), descriptor->file());
}

string ClassName(const ServiceDescriptor* descriptor) {
  return ToJavaName(descriptor->full_name(), descriptor->file());
}

string ClassName(const FileDescriptor* descriptor) {
  string result = FileJavaPackage(descriptor);
  if (!result.empty()) result += '.';
  result += FileClassName(descriptor);
  return result;
}

string FieldConstantName(const FieldDescriptor *field) {
  string name = field->name() + "_FIELD_NUMBER";
  UpperString(&name);
  return name;
}

FieldDescriptor::Type GetType(const FieldDescriptor* field) {
  return field->type();
}

JavaType GetJavaType(const FieldDescriptor* field) {
  switch (GetType(field)) {
    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;
}

const char* 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 "com.google.protobuf.ByteString";
    case JAVATYPE_ENUM   : return NULL;
    case JAVATYPE_MESSAGE: return NULL;

    // No default because we want the compiler to complain if any new
    // JavaTypes are added.
  }

  GOOGLE_LOG(FATAL) << "Can't get here.";
  return NULL;
}

bool AllAscii(const string& text) {
  for (int i = 0; i < text.size(); i++) {
    if ((text[i] & 0x80) != 0) {
      return false;
    }
  }
  return true;
}

string DefaultValue(const FieldDescriptor* field) {
  // Switch on CppType 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 == numeric_limits<double>::infinity()) {
        return "Double.POSITIVE_INFINITY";
      } else if (value == -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 == numeric_limits<float>::infinity()) {
        return "Float.POSITIVE_INFINITY";
      } else if (value == -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 (GetType(field) == FieldDescriptor::TYPE_BYTES) {
        if (field->has_default_value()) {
          // See comments in Internal.java for gory details.
          return strings::Substitute(
            "com.google.protobuf.Internal.bytesDefaultValue(\"$0\")",
            CEscape(field->default_value_string()));
        } else {
          return "com.google.protobuf.ByteString.EMPTY";
        }
      } else {
        if (AllAscii(field->default_value_string())) {
          // All chars are ASCII.  In this case CEscape() works fine.
          return "\"" + CEscape(field->default_value_string()) + "\"";
        } else {
          // See comments in Internal.java for gory details.
          return strings::Substitute(
              "com.google.protobuf.Internal.stringDefaultValue(\"$0\")",
              CEscape(field->default_value_string()));
        }
      }

    case FieldDescriptor::CPPTYPE_ENUM:
      return ClassName(field->enum_type()) + "." +
          field->default_value_enum()->name();

    case FieldDescriptor::CPPTYPE_MESSAGE:
      return ClassName(field->message_type()) + ".getDefaultInstance()";

    // No default because we want the compiler to complain if any new
    // types are added.
  }

  GOOGLE_LOG(FATAL) << "Can't get here.";
  return "";
}

bool IsDefaultValueJavaDefault(const FieldDescriptor* field) {
  // Switch on CppType since we need to know which default_value_* method
  // of FieldDescriptor to call.
  switch (field->cpp_type()) {
    case FieldDescriptor::CPPTYPE_INT32:
      return field->default_value_int32() == 0;
    case FieldDescriptor::CPPTYPE_UINT32:
      return field->default_value_uint32() == 0;
    case FieldDescriptor::CPPTYPE_INT64:
      return field->default_value_int64() == 0L;
    case FieldDescriptor::CPPTYPE_UINT64:
      return field->default_value_uint64() == 0L;
    case FieldDescriptor::CPPTYPE_DOUBLE:
      return field->default_value_double() == 0.0;
    case FieldDescriptor::CPPTYPE_FLOAT:
      return field->default_value_float() == 0.0;
    case FieldDescriptor::CPPTYPE_BOOL:
      return field->default_value_bool() == false;

    case FieldDescriptor::CPPTYPE_STRING:
    case FieldDescriptor::CPPTYPE_ENUM:
    case FieldDescriptor::CPPTYPE_MESSAGE:
      return false;

    // No default because we want the compiler to complain if any new
    // types are added.
  }

  GOOGLE_LOG(FATAL) << "Can't get here.";
  return false;
}

const char* bit_masks[] = {
  "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 varName = "bitField";
  varName += SimpleItoa(index);
  varName += "_";
  return varName;
}

string GetBitFieldNameForBit(int bitIndex) {
  return GetBitFieldName(bitIndex / 32);
}

namespace {

string GenerateGetBitInternal(const string& prefix, int bitIndex) {
  string varName = prefix + GetBitFieldNameForBit(bitIndex);
  int bitInVarIndex = bitIndex % 32;

  string mask = bit_masks[bitInVarIndex];
  string result = "((" + varName + " & " + mask + ") == " + mask + ")";
  return result;
}

string GenerateSetBitInternal(const string& prefix, int bitIndex) {
  string varName = prefix + GetBitFieldNameForBit(bitIndex);
  int bitInVarIndex = bitIndex % 32;

  string mask = bit_masks[bitInVarIndex];
  string result = varName + " |= " + mask;
  return result;
}

}  // namespace

string GenerateGetBit(int bitIndex) {
  return GenerateGetBitInternal("", bitIndex);
}

string GenerateSetBit(int bitIndex) {
  return GenerateSetBitInternal("", bitIndex);
}

string GenerateClearBit(int bitIndex) {
  string varName = GetBitFieldNameForBit(bitIndex);
  int bitInVarIndex = bitIndex % 32;

  string mask = bit_masks[bitInVarIndex];
  string result = varName + " = (" + varName + " & ~" + mask + ")";
  return result;
}

string GenerateGetBitFromLocal(int bitIndex) {
  return GenerateGetBitInternal("from_", bitIndex);
}

string GenerateSetBitToLocal(int bitIndex) {
  return GenerateSetBitInternal("to_", bitIndex);
}

string GenerateGetBitMutableLocal(int bitIndex) {
  return GenerateGetBitInternal("mutable_", bitIndex);
}

string GenerateSetBitMutableLocal(int bitIndex) {
  return GenerateSetBitInternal("mutable_", bitIndex);
}

}  // namespace java
}  // namespace compiler
}  // namespace protobuf
}  // namespace google
/* [<][>][^][v][top][bottom][index][help] */
root/third_party/protobuf/src/google/protobuf/compiler/java/java_helpers.cc

DEFINITIONS
