1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124
  125
  126
  127
  128
  129
  130
  131
  132
  133
  134
  135
  136
  137
  138
  139
  140
  141
  142
  143
  144
  145
  146
  147
  148
  149
  150
  151
  152
  153
  154
  155
  156
  157
  158
  159
  160
  161
  162
  163
  164
  165
  166
  167
  168
  169


content / browser / android / java / java_type.cc [blame]

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "content/browser/android/java/java_type.h"

#include <memory>

#include "base/check_op.h"
#include "base/notreached.h"
#include "base/strings/string_util.h"

namespace content {
namespace {

// Array component type names are similar to JNI type names, except for using
// dots as namespace separators in class names.
std::unique_ptr<JavaType> CreateFromArrayComponentTypeName(
    const std::string& type_name) {
  std::unique_ptr<JavaType> result(new JavaType());
  DCHECK(!type_name.empty());
  switch (type_name[0]) {
    case 'Z':
      result->type = JavaType::TypeBoolean;
      break;
    case 'B':
      result->type = JavaType::TypeByte;
      break;
    case 'C':
      result->type = JavaType::TypeChar;
      break;
    case 'S':
      result->type = JavaType::TypeShort;
      break;
    case 'I':
      result->type = JavaType::TypeInt;
      break;
    case 'J':
      result->type = JavaType::TypeLong;
      break;
    case 'F':
      result->type = JavaType::TypeFloat;
      break;
    case 'D':
      result->type = JavaType::TypeDouble;
      break;
    case '[':
      result->type = JavaType::TypeArray;
      result->inner_type =
          CreateFromArrayComponentTypeName(type_name.substr(1));
      break;
    case 'L':
      if (type_name == "Ljava.lang.String;") {
        result->type = JavaType::TypeString;
        result->class_jni_name = "java/lang/String";
      } else {
        result->type = JavaType::TypeObject;
        result->class_jni_name = type_name.substr(1, type_name.length() - 2);
        base::ReplaceSubstringsAfterOffset(
            &result->class_jni_name, 0, ".", "/");
      }
      break;
    default:
      // Includes void (V).
      NOTREACHED_IN_MIGRATION();
  }
  return result;
}

}  // namespace

JavaType::JavaType() {
}

JavaType::JavaType(const JavaType& other) {
  *this = other;
}

JavaType::~JavaType() {
}

JavaType& JavaType::operator=(const JavaType& other) {
  if (this == &other)
    return *this;
  type = other.type;
  if (other.inner_type) {
    DCHECK_EQ(JavaType::TypeArray, type);
    inner_type = std::make_unique<JavaType>(*other.inner_type);
  } else {
    inner_type.reset();
  }
  class_jni_name = other.class_jni_name;
  return *this;
}

// static
JavaType JavaType::CreateFromBinaryName(const std::string& binary_name) {
  JavaType result;
  DCHECK(!binary_name.empty());
  if (binary_name == "boolean") {
    result.type = JavaType::TypeBoolean;
  } else if (binary_name == "byte") {
    result.type = JavaType::TypeByte;
  } else if (binary_name == "char") {
    result.type = JavaType::TypeChar;
  } else if (binary_name == "short") {
    result.type = JavaType::TypeShort;
  } else if (binary_name == "int") {
    result.type = JavaType::TypeInt;
  } else if (binary_name == "long") {
    result.type = JavaType::TypeLong;
  } else if (binary_name == "float") {
    result.type = JavaType::TypeFloat;
  } else if (binary_name == "double") {
    result.type = JavaType::TypeDouble;
  } else if (binary_name == "void") {
    result.type = JavaType::TypeVoid;
  } else if (binary_name[0] == '[') {
    result.type = JavaType::TypeArray;
    result.inner_type = CreateFromArrayComponentTypeName(binary_name.substr(1));
  } else if (binary_name == "java.lang.String") {
    result.type = JavaType::TypeString;
    result.class_jni_name = "java/lang/String";
  } else {
    result.type = JavaType::TypeObject;
    result.class_jni_name = binary_name;
    base::ReplaceSubstringsAfterOffset(&result.class_jni_name, 0, ".", "/");
  }
  return result;
}

std::string JavaType::JNIName() const {
  switch (type) {
    case JavaType::TypeBoolean:
      return "Z";
    case JavaType::TypeByte:
      return "B";
    case JavaType::TypeChar:
      return "C";
    case JavaType::TypeShort:
      return "S";
    case JavaType::TypeInt:
      return "I";
    case JavaType::TypeLong:
      return "J";
    case JavaType::TypeFloat:
      return "F";
    case JavaType::TypeDouble:
      return "D";
    case JavaType::TypeVoid:
      return "V";
    case JavaType::TypeArray:
      return "[" + inner_type->JNISignature();
    case JavaType::TypeString:
    case JavaType::TypeObject:
      return class_jni_name;
  }
  NOTREACHED_IN_MIGRATION();
  return std::string();
}

std::string JavaType::JNISignature() const {
  if (type == JavaType::TypeString || type == JavaType::TypeObject)
    return "L" + JNIName() + ";";
  else
    return JNIName();
}

}  // namespace content