22 *
23 */
24
25 #ifndef SHARE_UTILITIES_CONSTANTTAG_HPP
26 #define SHARE_UTILITIES_CONSTANTTAG_HPP
27
28 #include "utilities/globalDefinitions.hpp"
29
30
31 class outputStream;
32
33 // constant tags in Java .class files
34
35 enum {
36 // See jvm.h for shared JVM_CONSTANT_XXX tags
37 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
38 // Hotspot specific tags
39 JVM_CONSTANT_Invalid = 0, // For bad value initialization
40 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
41 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
42 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool
43 JVM_CONSTANT_StringIndex = 102, // Temporary tag while constructing constant pool
44 JVM_CONSTANT_UnresolvedClassInError = 103, // Error tag due to resolution error
45 JVM_CONSTANT_MethodHandleInError = 104, // Error tag due to resolution error
46 JVM_CONSTANT_MethodTypeInError = 105, // Error tag due to resolution error
47 JVM_CONSTANT_DynamicInError = 106, // Error tag due to resolution error
48 JVM_CONSTANT_InternalMax = 106 // Last implementation tag
49 };
50
51
52 class constantTag {
53 private:
54 jbyte _tag;
55 public:
56 bool is_klass() const { return _tag == JVM_CONSTANT_Class; }
57 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
58 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
59 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
60 bool is_string() const { return _tag == JVM_CONSTANT_String; }
61 bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
62 bool is_float() const { return _tag == JVM_CONSTANT_Float; }
63 bool is_long() const { return _tag == JVM_CONSTANT_Long; }
64 bool is_double() const { return _tag == JVM_CONSTANT_Double; }
65 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
66 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
67
68 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
69
70 bool is_unresolved_klass() const {
71 return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError;
72 }
73
74 bool is_unresolved_klass_in_error() const {
75 return _tag == JVM_CONSTANT_UnresolvedClassInError;
76 }
77
78 bool is_method_handle_in_error() const {
79 return _tag == JVM_CONSTANT_MethodHandleInError;
80 }
81 bool is_method_type_in_error() const {
82 return _tag == JVM_CONSTANT_MethodTypeInError;
83 }
84
85 bool is_dynamic_constant_in_error() const {
86 return _tag == JVM_CONSTANT_DynamicInError;
87 }
88
89 bool is_in_error() const {
90 return is_unresolved_klass_in_error() ||
91 is_method_handle_in_error() ||
92 is_method_type_in_error() ||
93 is_dynamic_constant_in_error();
94 }
95
132 if (is_subword_type(bt)) {
133 bt = T_INT;
134 }
135 if (bt == T_ARRAY) {
136 bt = T_OBJECT;
137 }
138 switch (bt) {
139 case T_INT: return JVM_CONSTANT_Integer;
140 case T_LONG: return JVM_CONSTANT_Long;
141 case T_FLOAT: return JVM_CONSTANT_Float;
142 case T_DOUBLE: return JVM_CONSTANT_Double;
143 case T_OBJECT: return JVM_CONSTANT_String;
144
145 default:
146 assert(false, "not supported: %s", type2name(bt));
147 return JVM_CONSTANT_Invalid;
148 }
149 }
150
151 jbyte value() const { return _tag; }
152 jbyte error_value() const;
153 jbyte non_error_value() const;
154
155 BasicType basic_type() const; // if used with ldc, what kind of value gets pushed?
156
157 const char* internal_name() const; // for error reporting
158
159 void print_on(outputStream* st) const PRODUCT_RETURN;
160 };
161
162 #endif // SHARE_UTILITIES_CONSTANTTAG_HPP
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22 *
23 */
24
25 #ifndef SHARE_UTILITIES_CONSTANTTAG_HPP
26 #define SHARE_UTILITIES_CONSTANTTAG_HPP
27
28 #include "utilities/globalDefinitions.hpp"
29
30
31 class outputStream;
32
33 // constant tags in Java .class files
34
35 enum {
36 // See jvm.h for shared JVM_CONSTANT_XXX tags
37 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java
38 // Hotspot specific tags
39 JVM_CONSTANT_Invalid = 0, // For bad value initialization
40 JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course)
41 JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use
42 JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool, class redefinition
43 JVM_CONSTANT_StringIndex = 102, // Temporary tag while constructing constant pool, class redefinition
44 JVM_CONSTANT_UnresolvedClassInError = 103, // Error tag due to resolution error
45 JVM_CONSTANT_MethodHandleInError = 104, // Error tag due to resolution error
46 JVM_CONSTANT_MethodTypeInError = 105, // Error tag due to resolution error
47 JVM_CONSTANT_DynamicInError = 106, // Error tag due to resolution error
48 JVM_CONSTANT_InternalMax = 106, // Last implementation tag
49 };
50
51 class constantTag {
52 private:
53 jbyte _tag;
54 public:
55 bool is_klass() const { return value() == JVM_CONSTANT_Class; }
56 bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; }
57 bool is_method() const { return _tag == JVM_CONSTANT_Methodref; }
58 bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; }
59 bool is_string() const { return _tag == JVM_CONSTANT_String; }
60 bool is_int() const { return _tag == JVM_CONSTANT_Integer; }
61 bool is_float() const { return _tag == JVM_CONSTANT_Float; }
62 bool is_long() const { return _tag == JVM_CONSTANT_Long; }
63 bool is_double() const { return _tag == JVM_CONSTANT_Double; }
64 bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; }
65 bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; }
66
67 bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; }
68
69 bool is_unresolved_klass() const {
70 return value() == JVM_CONSTANT_UnresolvedClass || value() == JVM_CONSTANT_UnresolvedClassInError;
71 }
72
73 bool is_unresolved_klass_in_error() const {
74 return value() == JVM_CONSTANT_UnresolvedClassInError;
75 }
76
77 bool is_method_handle_in_error() const {
78 return _tag == JVM_CONSTANT_MethodHandleInError;
79 }
80 bool is_method_type_in_error() const {
81 return _tag == JVM_CONSTANT_MethodTypeInError;
82 }
83
84 bool is_dynamic_constant_in_error() const {
85 return _tag == JVM_CONSTANT_DynamicInError;
86 }
87
88 bool is_in_error() const {
89 return is_unresolved_klass_in_error() ||
90 is_method_handle_in_error() ||
91 is_method_type_in_error() ||
92 is_dynamic_constant_in_error();
93 }
94
131 if (is_subword_type(bt)) {
132 bt = T_INT;
133 }
134 if (bt == T_ARRAY) {
135 bt = T_OBJECT;
136 }
137 switch (bt) {
138 case T_INT: return JVM_CONSTANT_Integer;
139 case T_LONG: return JVM_CONSTANT_Long;
140 case T_FLOAT: return JVM_CONSTANT_Float;
141 case T_DOUBLE: return JVM_CONSTANT_Double;
142 case T_OBJECT: return JVM_CONSTANT_String;
143
144 default:
145 assert(false, "not supported: %s", type2name(bt));
146 return JVM_CONSTANT_Invalid;
147 }
148 }
149
150 jbyte value() const { return _tag; }
151 jbyte tag() const { return _tag; }
152 jbyte error_value() const;
153 jbyte non_error_value() const;
154
155 BasicType basic_type() const; // if used with ldc, what kind of value gets pushed?
156
157 const char* internal_name() const; // for error reporting
158
159 void print_on(outputStream* st) const PRODUCT_RETURN;
160 };
161
162 #endif // SHARE_UTILITIES_CONSTANTTAG_HPP
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