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1 /* |
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2 * Copyright (c) 2014, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 #include "JavaTypes.h" |
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27 #include "PlatformString.h" |
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28 |
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29 #include <list> |
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30 |
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31 |
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32 #ifdef DEBUG |
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33 TString JavaException::CreateExceptionMessage(JNIEnv* Env, |
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34 jthrowable Exception, jmethodID GetCauseMethod, |
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35 jmethodID GetStackTraceMethod, jmethodID ThrowableToTStringMethod, |
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36 jmethodID FrameToTStringMethod) { |
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37 |
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38 TString result; |
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39 jobjectArray frames = |
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40 (jobjectArray)Env->CallObjectMethod(Exception, GetStackTraceMethod); |
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41 |
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42 // Append Throwable.toTString(). |
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43 if (0 != frames) { |
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44 jstring jstr = (jstring)Env->CallObjectMethod(Exception, |
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45 ThrowableToTStringMethod); |
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46 const char* str = Env->GetStringUTFChars(jstr, 0); |
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47 result += PlatformString(str).toPlatformString(); |
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48 Env->ReleaseStringUTFChars(jstr, str); |
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49 Env->DeleteLocalRef(jstr); |
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50 } |
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51 |
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52 // Append stack trace if one exists. |
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53 if (Env->GetArrayLength(frames) > 0) { |
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54 jsize i = 0; |
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55 |
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56 for (i = 0; i < Env->GetArrayLength(frames); i++) { |
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57 // Get the string from the next frame and append it to |
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58 // the error message. |
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59 jobject frame = Env->GetObjectArrayElement(frames, i); |
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60 jstring obj = (jstring)Env->CallObjectMethod(frame, |
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61 FrameToTStringMethod); |
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62 const char* str = Env->GetStringUTFChars(obj, 0); |
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63 result += _T("\n "); |
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64 result += PlatformString(str).toPlatformString(); |
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65 Env->ReleaseStringUTFChars(obj, str); |
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66 Env->DeleteLocalRef(obj); |
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67 Env->DeleteLocalRef(frame); |
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68 } |
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69 } |
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70 |
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71 // If Exception has a cause then append the stack trace messages. |
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72 if (0 != frames) { |
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73 jthrowable cause = |
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74 (jthrowable)Env->CallObjectMethod(Exception, GetCauseMethod); |
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75 |
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76 if (cause != NULL) { |
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77 result += CreateExceptionMessage(Env, cause, GetCauseMethod, |
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78 GetStackTraceMethod, ThrowableToTStringMethod, |
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79 FrameToTStringMethod); |
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80 } |
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81 } |
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82 |
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83 return result; |
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84 } |
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85 #endif //DEBUG |
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86 |
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87 JavaException::JavaException() : Exception() {} |
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88 |
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89 //#ifdef WINDOWS |
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90 JavaException::JavaException(JNIEnv *Env, |
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91 const TString Message) : Exception(Message) { |
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92 //#endif //WINDOWS |
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93 //#ifdef POSIX |
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94 //JavaException::JavaException(JNIEnv *Env, TString message) { |
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95 //#endif //POSIX |
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96 |
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97 FEnv = Env; |
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98 FException = Env->ExceptionOccurred(); |
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99 Env->ExceptionClear(); |
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100 |
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101 #ifdef DEBUG |
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102 Platform& platform = Platform::GetInstance(); |
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103 |
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104 if (platform.GetDebugState() == dsNone) { |
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105 jclass ThrowableClass = Env->FindClass("java/lang/Throwable"); |
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106 |
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107 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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108 Env->ExceptionClear(); |
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109 return; |
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110 } |
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111 |
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112 jmethodID GetCauseMethod = Env->GetMethodID(ThrowableClass, |
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113 "getCause", "()Ljava/lang/Throwable;"); |
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114 |
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115 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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116 Env->ExceptionClear(); |
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117 return; |
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118 } |
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119 |
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120 jmethodID GetStackTraceMethod = Env->GetMethodID(ThrowableClass, |
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121 "getStackTrace", "()[Ljava/lang/StackTraceElement;"); |
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122 |
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123 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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124 Env->ExceptionClear(); |
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125 return; |
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126 } |
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127 |
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128 jmethodID ThrowableToTStringMethod = Env->GetMethodID(ThrowableClass, |
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129 "toString", "()Ljava/lang/String;"); |
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130 |
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131 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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132 Env->ExceptionClear(); |
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133 return; |
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134 } |
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135 |
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136 jclass FrameClass = Env->FindClass("java/lang/StackTraceElement"); |
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137 |
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138 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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139 Env->ExceptionClear(); |
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140 return; |
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141 } |
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142 |
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143 jmethodID FrameToTStringMethod = Env->GetMethodID(FrameClass, |
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144 "toString", "()Ljava/lang/String;"); |
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145 |
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146 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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147 Env->ExceptionClear(); |
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148 return; |
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149 } |
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150 |
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151 TString lmessage = CreateExceptionMessage(Env, FException, |
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152 GetCauseMethod, GetStackTraceMethod, ThrowableToTStringMethod, |
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153 FrameToTStringMethod); |
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154 SetMessage(lmessage); |
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155 } |
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156 #endif //DEBUG |
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157 } |
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158 |
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159 void JavaException::Rethrow() { |
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160 FEnv->Throw(FException); |
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161 } |
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162 |
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163 //---------------------------------------------------------------------------- |
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164 |
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165 JavaStaticMethod::JavaStaticMethod(JNIEnv *Env, jclass Class, jmethodID Method) { |
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166 FEnv = Env; |
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167 FClass = Class; |
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168 FMethod = Method; |
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169 } |
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170 |
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171 void JavaStaticMethod::CallVoidMethod(int Count, ...) { |
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172 va_list args; |
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173 va_start(args, Count); |
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174 FEnv->CallStaticVoidMethodV(FClass, FMethod, args); |
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175 va_end(args); |
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176 |
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177 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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178 Messages& messages = Messages::GetInstance(); |
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179 throw JavaException(FEnv, messages.GetMessage(ERROR_INVOKING_METHOD)); |
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180 } |
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181 } |
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182 |
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183 JavaStaticMethod::operator jmethodID () { |
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184 return FMethod; |
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185 } |
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186 |
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187 //---------------------------------------------------------------------------- |
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188 |
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189 JavaMethod::JavaMethod(JNIEnv *Env, jobject Obj, jmethodID Method) { |
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190 FEnv = Env; |
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191 FObj = Obj; |
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192 FMethod = Method; |
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193 } |
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194 |
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195 void JavaMethod::CallVoidMethod(int Count, ...) { |
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196 va_list args; |
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197 va_start(args, Count); |
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198 FEnv->CallVoidMethodV(FObj, FMethod, args); |
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199 va_end(args); |
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200 |
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201 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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202 Messages& messages = Messages::GetInstance(); |
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203 throw JavaException(FEnv, messages.GetMessage(ERROR_INVOKING_METHOD)); |
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204 } |
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205 } |
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206 |
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207 JavaMethod::operator jmethodID () { |
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208 return FMethod; |
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209 } |
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210 |
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211 //---------------------------------------------------------------------------- |
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212 |
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213 JavaClass::JavaClass(JNIEnv *Env, TString Name) { |
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214 FEnv = Env; |
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215 FClassName = Name; |
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216 FClass = FEnv->FindClass(PlatformString(FClassName)); |
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217 |
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218 if (FClass == NULL || FEnv->ExceptionCheck() == JNI_TRUE) { |
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219 Messages& messages = Messages::GetInstance(); |
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220 TString message = messages.GetMessage(CLASS_NOT_FOUND); |
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221 message = PlatformString::Format(message, FClassName.data()); |
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222 throw JavaException(FEnv, message); |
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223 } |
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224 } |
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225 |
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226 JavaClass::~JavaClass() { |
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227 FEnv->DeleteLocalRef(FClass); |
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228 } |
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229 |
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230 JavaStaticMethod JavaClass::GetStaticMethod(TString Name, TString Signature) { |
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231 jmethodID method = FEnv->GetStaticMethodID(FClass, PlatformString(Name), |
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232 PlatformString(Signature)); |
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233 |
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234 if (method == NULL || FEnv->ExceptionCheck() == JNI_TRUE) { |
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235 Messages& messages = Messages::GetInstance(); |
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236 TString message = messages.GetMessage(METHOD_NOT_FOUND); |
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237 message = PlatformString::Format(message, Name.data(), |
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238 FClassName.data()); |
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239 throw JavaException(FEnv, message); |
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240 } |
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241 |
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242 return JavaStaticMethod(FEnv, FClass, method); |
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243 } |
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244 |
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245 JavaClass::operator jclass () { |
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246 return FClass; |
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247 } |
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248 |
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249 //---------------------------------------------------------------------------- |
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250 |
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251 void JavaStringArray::Initialize(size_t Size) { |
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252 JavaClass jstringClass(FEnv, _T("java/lang/String")); |
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253 |
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254 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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255 Messages& messages = Messages::GetInstance(); |
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256 TString message = messages.GetMessage(CLASS_NOT_FOUND); |
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257 message = PlatformString::Format(message, _T("String")); |
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258 throw JavaException(FEnv, message.data()); |
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259 } |
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260 |
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261 jstring str = PlatformString("").toJString(FEnv); |
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262 FData = (jobjectArray)FEnv->NewObjectArray((jsize)Size, jstringClass, str); |
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263 |
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264 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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265 throw JavaException(FEnv, _T("Error")); |
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266 } |
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267 } |
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268 |
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269 JavaStringArray::JavaStringArray(JNIEnv *Env, size_t Size) { |
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270 FEnv = Env; |
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271 Initialize(Size); |
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272 } |
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273 |
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274 JavaStringArray::JavaStringArray(JNIEnv *Env, jobjectArray Data) { |
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275 FEnv = Env; |
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276 FData = Data; |
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277 } |
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278 |
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279 JavaStringArray::JavaStringArray(JNIEnv *Env, std::list<TString> Items) { |
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280 FEnv = Env; |
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281 Initialize(Items.size()); |
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282 unsigned int index = 0; |
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283 |
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284 for (std::list<TString>::const_iterator iterator = Items.begin(); |
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285 iterator != Items.end(); iterator++) { |
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286 TString item = *iterator; |
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287 SetValue(index, PlatformString(item).toJString(FEnv)); |
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288 index++; |
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289 } |
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290 } |
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291 |
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292 jobjectArray JavaStringArray::GetData() { |
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293 return FData; |
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294 } |
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295 |
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296 void JavaStringArray::SetValue(jsize Index, jstring Item) { |
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297 FEnv->SetObjectArrayElement(FData, Index, Item); |
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298 |
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299 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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300 throw JavaException(FEnv, _T("Error")); |
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301 } |
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302 } |
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303 |
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304 jstring JavaStringArray::GetValue(jsize Index) { |
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305 jstring result = (jstring)FEnv->GetObjectArrayElement(FData, Index); |
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306 |
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307 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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308 throw JavaException(FEnv, _T("Error")); |
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309 } |
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310 |
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311 return result; |
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312 } |
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313 |
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314 unsigned int JavaStringArray::Count() { |
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315 unsigned int result = FEnv->GetArrayLength(FData); |
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316 |
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317 if (FEnv->ExceptionCheck() == JNI_TRUE) { |
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318 throw JavaException(FEnv, _T("Error")); |
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319 } |
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320 |
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321 return result; |
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322 } |