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src/java.base/share/classes/sun/invoke/util/BytecodeDescriptor.java

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rev 55127 : 8223351: [lworld] Primary mirror and nullable mirror for inline type
Reviewed-by: tbd


  76     private static void parseError(String str, String msg) {
  77         throw new IllegalArgumentException("bad signature: "+str+": "+msg);
  78     }
  79 
  80     /**
  81      * @param loader the class loader in which to look up the types (null means
  82      *               bootstrap class loader)
  83      */
  84     private static Class<?> parseSig(String str, int[] i, int end, ClassLoader loader) {
  85         if (i[0] == end)  return null;
  86         char c = str.charAt(i[0]++);
  87         if (c == 'L' || c == 'Q') {
  88             int begc = i[0], endc = str.indexOf(';', begc);
  89             if (endc < 0)  return null;
  90             i[0] = endc+1;
  91             String name = str.substring(begc, endc).replace('/', '.');
  92             try {
  93                 Class<?> clz = (loader == null)
  94                                     ? Class.forName(name, false, null)
  95                                     : loader.loadClass(name);
  96                 return c == 'Q' ? clz.asValueType() : clz.asBoxType();
  97             } catch (ClassNotFoundException ex) {
  98                 throw new TypeNotPresentException(name, ex);
  99             }
 100         } else if (c == '[') {
 101             Class<?> t = parseSig(str, i, end, loader);
 102             if (t != null)
 103                 t = java.lang.reflect.Array.newInstance(t, 0).getClass();
 104             return t;
 105         } else {
 106             return Wrapper.forBasicType(c).primitiveType();
 107         }
 108     }
 109 
 110     public static String unparse(Class<?> type) {
 111         if (type == Object.class) {
 112             return "Ljava/lang/Object;";
 113         } else if (type == int.class) {
 114             return "I";
 115         }
 116         StringBuilder sb = new StringBuilder();


 141     }
 142 
 143     public static String unparseMethod(Class<?> rtype, Class<?>[] ptypes) {
 144         StringBuilder sb = new StringBuilder();
 145         sb.append('(');
 146         for (Class<?> pt : ptypes)
 147             unparseSig(pt, sb);
 148         sb.append(')');
 149         unparseSig(rtype, sb);
 150         return sb.toString();
 151     }
 152 
 153     private static void unparseSig(Class<?> t, StringBuilder sb) {
 154         char c = Wrapper.forBasicType(t).basicTypeChar();
 155         if (c != 'L') {
 156             sb.append(c);
 157         } else if (t == Object.class) {
 158             sb.append("Ljava/lang/Object;");
 159         } else {
 160             boolean lsemi = (!t.isArray());
 161             if (t == t.asValueType())
 162                 c = 'Q';

 163             if (lsemi)  sb.append(c);
 164             sb.append(t.getName().replace('.', '/'));
 165             if (lsemi)  sb.append(';');
 166         }
 167     }
 168 
 169 }


  76     private static void parseError(String str, String msg) {
  77         throw new IllegalArgumentException("bad signature: "+str+": "+msg);
  78     }
  79 
  80     /**
  81      * @param loader the class loader in which to look up the types (null means
  82      *               bootstrap class loader)
  83      */
  84     private static Class<?> parseSig(String str, int[] i, int end, ClassLoader loader) {
  85         if (i[0] == end)  return null;
  86         char c = str.charAt(i[0]++);
  87         if (c == 'L' || c == 'Q') {
  88             int begc = i[0], endc = str.indexOf(';', begc);
  89             if (endc < 0)  return null;
  90             i[0] = endc+1;
  91             String name = str.substring(begc, endc).replace('/', '.');
  92             try {
  93                 Class<?> clz = (loader == null)
  94                                     ? Class.forName(name, false, null)
  95                                     : loader.loadClass(name);
  96                 return c == 'Q' ? clz.asPrimaryType() : clz.asNullableType();
  97             } catch (ClassNotFoundException ex) {
  98                 throw new TypeNotPresentException(name, ex);
  99             }
 100         } else if (c == '[') {
 101             Class<?> t = parseSig(str, i, end, loader);
 102             if (t != null)
 103                 t = java.lang.reflect.Array.newInstance(t, 0).getClass();
 104             return t;
 105         } else {
 106             return Wrapper.forBasicType(c).primitiveType();
 107         }
 108     }
 109 
 110     public static String unparse(Class<?> type) {
 111         if (type == Object.class) {
 112             return "Ljava/lang/Object;";
 113         } else if (type == int.class) {
 114             return "I";
 115         }
 116         StringBuilder sb = new StringBuilder();


 141     }
 142 
 143     public static String unparseMethod(Class<?> rtype, Class<?>[] ptypes) {
 144         StringBuilder sb = new StringBuilder();
 145         sb.append('(');
 146         for (Class<?> pt : ptypes)
 147             unparseSig(pt, sb);
 148         sb.append(')');
 149         unparseSig(rtype, sb);
 150         return sb.toString();
 151     }
 152 
 153     private static void unparseSig(Class<?> t, StringBuilder sb) {
 154         char c = Wrapper.forBasicType(t).basicTypeChar();
 155         if (c != 'L') {
 156             sb.append(c);
 157         } else if (t == Object.class) {
 158             sb.append("Ljava/lang/Object;");
 159         } else {
 160             boolean lsemi = (!t.isArray());
 161             if (!t.isNullableType())
 162                 c = 'Q';
 163             String n = t.isInlineClass() ? t.asPrimaryType().getName() : t.getName();
 164             if (lsemi)  sb.append(c);
 165             sb.append(n.replace('.', '/'));
 166             if (lsemi)  sb.append(';');
 167         }
 168     }
 169 
 170 }
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