19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // constant tags in Java .class files
26
27
28 enum {
29 // See jvm.h for shared JVM_CONSTANT_XXX tags
30 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
31 // Hotspot specific tags
32 JVM_CONSTANT_Invalid = 0, // For bad value initialization
33 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
34 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
35 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
36 JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
37 JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
38 JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
39 JVM_CONSTANT_InternalMax = 104 // Last implementation tag
40 };
41
42
43 class constantTag VALUE_OBJ_CLASS_SPEC {
44 private:
45 jbyte _tag;
46 public:
47 bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
48 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
49 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
50 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
51 bool is_string() const { return _tag == JVM_CONSTANT_String; }
52 bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
53 bool is_float() const { return _tag == JVM_CONSTANT_Float; }
54 bool is_long() const { return _tag == JVM_CONSTANT_Long; }
55 bool is_double() const { return _tag == JVM_CONSTANT_Double; }
56 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
57 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
58
59 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
60
61 bool is_unresolved_klass() const {
62 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
63 }
64
65 bool is_unresolved_klass_in_error() const {
66 return _tag == JVM_CONSTANT_UnresolvedClassInError;
67 }
68
69 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
70 bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
71 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
72
73 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
74 bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); }
75 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
76 bool is_symbol() const { return is_utf8(); }
77
78 constantTag(jbyte tag) {
79 assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
80 (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
81 _tag = tag;
82 }
83
84 jbyte value() { return _tag; }
85
86 void print_on(outputStream* st) const PRODUCT_RETURN;
87 };
|
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 // constant tags in Java .class files
26
27
28 enum {
29 // See jvm.h for shared JVM_CONSTANT_XXX tags
30 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
31 // Hotspot specific tags
32 JVM_CONSTANT_Invalid = 0, // For bad value initialization
33 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
34 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
35 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
36 JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use
37 JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool
38 JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error
39 JVM_CONSTANT_Object = 105, // Required for BoundMethodHandle arguments.
40 JVM_CONSTANT_InternalMax = 105 // Last implementation tag
41 };
42
43
44 class constantTag VALUE_OBJ_CLASS_SPEC {
45 private:
46 jbyte _tag;
47 public:
48 bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
49 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
50 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
51 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
52 bool is_string() const { return _tag == JVM_CONSTANT_String; }
53 bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
54 bool is_float() const { return _tag == JVM_CONSTANT_Float; }
55 bool is_long() const { return _tag == JVM_CONSTANT_Long; }
56 bool is_double() const { return _tag == JVM_CONSTANT_Double; }
57 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
58 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
59
60 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
61
62 bool is_unresolved_klass() const {
63 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
64 }
65
66 bool is_unresolved_klass_in_error() const {
67 return _tag == JVM_CONSTANT_UnresolvedClassInError;
68 }
69
70 bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; }
71 bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; }
72 bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; }
73
74 bool is_object() const { return _tag == JVM_CONSTANT_Object; }
75
76 bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); }
77 bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); }
78 bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); }
79 bool is_symbol() const { return is_utf8(); }
80
81 constantTag(jbyte tag) {
82 assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) ||
83 (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag");
84 _tag = tag;
85 }
86
87 jbyte value() { return _tag; }
88
89 void print_on(outputStream* st) const PRODUCT_RETURN;
90 };
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