Mon, 09 Aug 2010 17:51:56 -0700
Merge
duke@435 | 1 | /* |
trims@1907 | 2 | * Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | // constant tags in Java .class files |
duke@435 | 26 | |
duke@435 | 27 | |
duke@435 | 28 | enum { |
duke@435 | 29 | // See jvm.h for shared JVM_CONSTANT_XXX tags |
duke@435 | 30 | // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/utilities/ConstantTag.java |
duke@435 | 31 | // Hotspot specific tags |
duke@435 | 32 | JVM_CONSTANT_Invalid = 0, // For bad value initialization |
duke@435 | 33 | JVM_CONSTANT_InternalMin = 100, // First implementation tag (aside from bad value of course) |
duke@435 | 34 | JVM_CONSTANT_UnresolvedClass = 100, // Temporary tag until actual use |
duke@435 | 35 | JVM_CONSTANT_ClassIndex = 101, // Temporary tag while constructing constant pool |
duke@435 | 36 | JVM_CONSTANT_UnresolvedString = 102, // Temporary tag until actual use |
duke@435 | 37 | JVM_CONSTANT_StringIndex = 103, // Temporary tag while constructing constant pool |
duke@435 | 38 | JVM_CONSTANT_UnresolvedClassInError = 104, // Error tag due to resolution error |
twisti@1573 | 39 | JVM_CONSTANT_Object = 105, // Required for BoundMethodHandle arguments. |
twisti@1573 | 40 | JVM_CONSTANT_InternalMax = 105 // Last implementation tag |
duke@435 | 41 | }; |
duke@435 | 42 | |
duke@435 | 43 | |
duke@435 | 44 | class constantTag VALUE_OBJ_CLASS_SPEC { |
duke@435 | 45 | private: |
duke@435 | 46 | jbyte _tag; |
duke@435 | 47 | public: |
duke@435 | 48 | bool is_klass() const { return _tag == JVM_CONSTANT_Class; } |
duke@435 | 49 | bool is_field () const { return _tag == JVM_CONSTANT_Fieldref; } |
duke@435 | 50 | bool is_method() const { return _tag == JVM_CONSTANT_Methodref; } |
duke@435 | 51 | bool is_interface_method() const { return _tag == JVM_CONSTANT_InterfaceMethodref; } |
duke@435 | 52 | bool is_string() const { return _tag == JVM_CONSTANT_String; } |
duke@435 | 53 | bool is_int() const { return _tag == JVM_CONSTANT_Integer; } |
duke@435 | 54 | bool is_float() const { return _tag == JVM_CONSTANT_Float; } |
duke@435 | 55 | bool is_long() const { return _tag == JVM_CONSTANT_Long; } |
duke@435 | 56 | bool is_double() const { return _tag == JVM_CONSTANT_Double; } |
duke@435 | 57 | bool is_name_and_type() const { return _tag == JVM_CONSTANT_NameAndType; } |
duke@435 | 58 | bool is_utf8() const { return _tag == JVM_CONSTANT_Utf8; } |
duke@435 | 59 | |
duke@435 | 60 | bool is_invalid() const { return _tag == JVM_CONSTANT_Invalid; } |
duke@435 | 61 | |
duke@435 | 62 | bool is_unresolved_klass() const { |
duke@435 | 63 | return _tag == JVM_CONSTANT_UnresolvedClass || _tag == JVM_CONSTANT_UnresolvedClassInError; |
duke@435 | 64 | } |
duke@435 | 65 | |
duke@435 | 66 | bool is_unresolved_klass_in_error() const { |
duke@435 | 67 | return _tag == JVM_CONSTANT_UnresolvedClassInError; |
duke@435 | 68 | } |
duke@435 | 69 | |
duke@435 | 70 | bool is_klass_index() const { return _tag == JVM_CONSTANT_ClassIndex; } |
duke@435 | 71 | bool is_unresolved_string() const { return _tag == JVM_CONSTANT_UnresolvedString; } |
duke@435 | 72 | bool is_string_index() const { return _tag == JVM_CONSTANT_StringIndex; } |
duke@435 | 73 | |
twisti@1573 | 74 | bool is_object() const { return _tag == JVM_CONSTANT_Object; } |
twisti@1573 | 75 | |
duke@435 | 76 | bool is_klass_reference() const { return is_klass_index() || is_unresolved_klass(); } |
jrose@866 | 77 | bool is_klass_or_reference() const{ return is_klass() || is_klass_reference(); } |
duke@435 | 78 | bool is_field_or_method() const { return is_field() || is_method() || is_interface_method(); } |
duke@435 | 79 | bool is_symbol() const { return is_utf8(); } |
duke@435 | 80 | |
jrose@1957 | 81 | bool is_method_type() const { return _tag == JVM_CONSTANT_MethodType; } |
jrose@1957 | 82 | bool is_method_handle() const { return _tag == JVM_CONSTANT_MethodHandle; } |
jrose@2015 | 83 | bool is_invoke_dynamic() const { return _tag == JVM_CONSTANT_InvokeDynamic; } |
jrose@1957 | 84 | |
jrose@1957 | 85 | constantTag() { |
jrose@1957 | 86 | _tag = JVM_CONSTANT_Invalid; |
jrose@1957 | 87 | } |
duke@435 | 88 | constantTag(jbyte tag) { |
duke@435 | 89 | assert((tag >= 0 && tag <= JVM_CONSTANT_NameAndType) || |
jrose@2015 | 90 | (tag >= JVM_CONSTANT_MethodHandle && tag <= JVM_CONSTANT_InvokeDynamic) || |
duke@435 | 91 | (tag >= JVM_CONSTANT_InternalMin && tag <= JVM_CONSTANT_InternalMax), "Invalid constant tag"); |
duke@435 | 92 | _tag = tag; |
duke@435 | 93 | } |
duke@435 | 94 | |
duke@435 | 95 | jbyte value() { return _tag; } |
duke@435 | 96 | |
jrose@1957 | 97 | BasicType basic_type() const; // if used with ldc, what kind of value gets pushed? |
jrose@1957 | 98 | |
jrose@1957 | 99 | const char* internal_name() const; // for error reporting |
jrose@1957 | 100 | |
duke@435 | 101 | void print_on(outputStream* st) const PRODUCT_RETURN; |
duke@435 | 102 | }; |