Line data    Source code

       1             : /******************************************************************************
       2             :  * Copyright (c) 2005, 2006 Los Alamos National Security, LLC.  This
       3             :  * material was produced under U.S. Government contract
       4             :  * DE-AC52-06NA25396 for Los Alamos National Laboratory (LANL), which
       5             :  * is operated by the Los Alamos National Security, LLC (LANS) for the
       6             :  * U.S. Department of Energy. The U.S. Government has rights to use,
       7             :  * reproduce, and distribute this software. NEITHER THE GOVERNMENT NOR
       8             :  * LANS MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR ASSUMES ANY
       9             :  * LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified to
      10             :  * produce derivative works, such modified software should be clearly
      11             :  * marked, so as not to confuse it with the version available from
      12             :  * LANL.
      13             :  *
      14             :  * Additionally, this program and the accompanying materials
      15             :  * are made available under the terms of the Eclipse Public License v1.0
      16             :  * which accompanies this distribution, and is available at
      17             :  * http://www.eclipse.org/legal/epl-v10.html
      18             :  *****************************************************************************/
      19             : 
      20             : #ifdef __cplusplus
      21             : extern "C" {
      22             : #endif
      23             : 
      24             : #include <stdlib.h>  
      25             : #include "jni.h"
      26             : #include "token.h"
      27             : 
      28             :   
      29        5234 : Token_t *convert_Java_token(JNIEnv *env, jobject token)
      30             : {
      31        5234 :   jclass cls;
      32        5234 :   jint type;
      33        5234 :   jstring java_string;
      34        5234 :   const char *text = NULL;
      35        5234 :   jmethodID method_id;
      36        5234 :   Token_t *our_token = NULL;
      37        5234 :   int line = -1;
      38        5234 :   int col = -1;
      39             :   
      40             :   /* Need to get the object class so we can use it to retrieve the methods.  */
      41        5234 :   cls = (*env)->GetObjectClass(env, token);
      42             :   /* Get the method ID for the getType() method.  */
      43        5234 :   method_id = (*env)->GetMethodID(env, cls, "getType", "()I");
      44             :   /* Call the getType method to get the token type.  */
      45        5234 :   type = (*env)->CallIntMethod(env, token, method_id);
      46             : 
      47             :   /* Get the method ID for the getText() method.  */
      48        5234 :   method_id = (*env)->GetMethodID(env, cls, "getText", "()Ljava/lang/String;");
      49             :   /* Call getText() to get the Java String object.  */
      50        5234 :   java_string = (*env)->CallObjectMethod(env, token, method_id);
      51             :   /* Get a C char string for the Java String if the Java String exists.  */
      52        5234 :   if(java_string != NULL)
      53             :   {
      54        5234 :     text = (*env)->GetStringUTFChars(env, java_string, NULL);
      55        5234 :     if(text == NULL)
      56             :     {
      57           0 :       fprintf(stderr, "Unable to retrieve text string from String object\n");
      58           0 :       exit(1);
      59             :     }
      60             :   }
      61             :   else
      62             :   {
      63             :     text = NULL;
      64             :   }
      65             : 
      66             :   /* Get the method ID for the getLine() method.  */
      67        5234 :   method_id = (*env)->GetMethodID(env, cls, "getLine", "()I");
      68             :   /* Call the getLine() method to get the line number for this token.  */
      69        5234 :   line = (*env)->CallIntMethod(env, token, method_id);
      70             : 
      71             :   /* Get the method ID for the getCharPositionInLine() method.  */
      72        5234 :   method_id = (*env)->GetMethodID(env, cls, "getCharPositionInLine", "()I");
      73             :   /* Call getCharPositionInLine() to get the column position for the token.  */
      74        5234 :   col = (*env)->CallIntMethod(env, token, method_id);
      75             :   
      76             :   /* build a Token of our own.  */
      77        5234 :   our_token = create_token(line, col, type, text);
      78             : 
      79             :   /* Release the string now that we've made a new copy for ourselves.  */
      80        5234 :   if(java_string != NULL)
      81        5234 :     (*env)->ReleaseStringUTFChars(env, java_string, text);
      82             : 
      83        5234 :   return our_token;
      84             : }
      85             : 
      86             : #ifdef __cplusplus
      87             : } /* End extern C. */
      88             : #endif
      89             :