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src/share/vm/classfile/verificationType.cpp@98cb887364d3 (annotated)

src/share/vm/classfile/verificationType.cpp

Fri, 27 Feb 2009 13:27:09 -0800

author

twisti

date

Fri, 27 Feb 2009 13:27:09 -0800

changeset 1040

98cb887364d3

parent 435

a61af66fc99e

child 1907

c18cbe5936b8

permissions

-rw-r--r--

6810672: Comment typos
Summary: I have collected some typos I have found while looking at the code.
Reviewed-by: kvn, never

duke@435	1	/*
duke@435	2	* Copyright 2003-2006 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	# include "incls/_precompiled.incl"
duke@435	26	# include "incls/_verificationType.cpp.incl"
duke@435	27
duke@435	28	VerificationType VerificationType::from_tag(u1 tag) {
duke@435	29	switch (tag) {
duke@435	30	case ITEM_Top: return bogus_type();
duke@435	31	case ITEM_Integer: return integer_type();
duke@435	32	case ITEM_Float: return float_type();
duke@435	33	case ITEM_Double: return double_type();
duke@435	34	case ITEM_Long: return long_type();
duke@435	35	case ITEM_Null: return null_type();
duke@435	36	default:
duke@435	37	ShouldNotReachHere();
duke@435	38	return bogus_type();
duke@435	39	}
duke@435	40	}
duke@435	41
duke@435	42	bool VerificationType::is_reference_assignable_from(
duke@435	43	const VerificationType& from, instanceKlassHandle context, TRAPS) const {
duke@435	44	if (from.is_null()) {
duke@435	45	// null is assignable to any reference
duke@435	46	return true;
duke@435	47	} else if (is_null()) {
duke@435	48	return false;
duke@435	49	} else if (name() == from.name()) {
duke@435	50	return true;
duke@435	51	} else if (is_object()) {
duke@435	52	// We need check the class hierarchy to check assignability
duke@435	53	if (name() == vmSymbols::java_lang_Object()) {
duke@435	54	// any object or array is assignable to java.lang.Object
duke@435	55	return true;
duke@435	56	}
duke@435	57	klassOop this_class = SystemDictionary::resolve_or_fail(
duke@435	58	name_handle(), Handle(THREAD, context->class_loader()),
duke@435	59	Handle(THREAD, context->protection_domain()), true, CHECK_false);
duke@435	60	if (this_class->klass_part()->is_interface()) {
duke@435	61	// We treat interfaces as java.lang.Object, including
duke@435	62	// java.lang.Cloneable and java.io.Serializable
duke@435	63	return true;
duke@435	64	} else if (from.is_object()) {
duke@435	65	klassOop from_class = SystemDictionary::resolve_or_fail(
duke@435	66	from.name_handle(), Handle(THREAD, context->class_loader()),
duke@435	67	Handle(THREAD, context->protection_domain()), true, CHECK_false);
duke@435	68	return instanceKlass::cast(from_class)->is_subclass_of(this_class);
duke@435	69	}
duke@435	70	} else if (is_array() && from.is_array()) {
duke@435	71	VerificationType comp_this = get_component(CHECK_false);
duke@435	72	VerificationType comp_from = from.get_component(CHECK_false);
duke@435	73	return comp_this.is_assignable_from(comp_from, context, CHECK_false);
duke@435	74	}
duke@435	75	return false;
duke@435	76	}
duke@435	77
duke@435	78	VerificationType VerificationType::get_component(TRAPS) const {
duke@435	79	assert(is_array() && name()->utf8_length() >= 2, "Must be a valid array");
duke@435	80	symbolOop component;
duke@435	81	switch (name()->byte_at(1)) {
duke@435	82	case 'Z': return VerificationType(Boolean);
duke@435	83	case 'B': return VerificationType(Byte);
duke@435	84	case 'C': return VerificationType(Char);
duke@435	85	case 'S': return VerificationType(Short);
duke@435	86	case 'I': return VerificationType(Integer);
duke@435	87	case 'J': return VerificationType(Long);
duke@435	88	case 'F': return VerificationType(Float);
duke@435	89	case 'D': return VerificationType(Double);
duke@435	90	case '[':
duke@435	91	component = SymbolTable::lookup(
duke@435	92	name(), 1, name()->utf8_length(),
duke@435	93	CHECK_(VerificationType::bogus_type()));
duke@435	94	return VerificationType::reference_type(component);
duke@435	95	case 'L':
duke@435	96	component = SymbolTable::lookup(
duke@435	97	name(), 2, name()->utf8_length() - 1,
duke@435	98	CHECK_(VerificationType::bogus_type()));
duke@435	99	return VerificationType::reference_type(component);
duke@435	100	default:
duke@435	101	ShouldNotReachHere();
duke@435	102	return VerificationType::bogus_type();
duke@435	103	}
duke@435	104	}
duke@435	105
duke@435	106	#ifndef PRODUCT
duke@435	107
duke@435	108	void VerificationType::print_on(outputStream* st) const {
duke@435	109	switch (_u._data) {
duke@435	110	case Bogus: st->print(" bogus "); break;
duke@435	111	case Category1: st->print(" category1 "); break;
duke@435	112	case Category2: st->print(" category2 "); break;
duke@435	113	case Category2_2nd: st->print(" category2_2nd "); break;
duke@435	114	case Boolean: st->print(" boolean "); break;
duke@435	115	case Byte: st->print(" byte "); break;
duke@435	116	case Short: st->print(" short "); break;
duke@435	117	case Char: st->print(" char "); break;
duke@435	118	case Integer: st->print(" integer "); break;
duke@435	119	case Float: st->print(" float "); break;
duke@435	120	case Long: st->print(" long "); break;
duke@435	121	case Double: st->print(" double "); break;
duke@435	122	case Long_2nd: st->print(" long_2nd "); break;
duke@435	123	case Double_2nd: st->print(" double_2nd "); break;
duke@435	124	case Null: st->print(" null "); break;
duke@435	125	default:
duke@435	126	if (is_uninitialized_this()) {
duke@435	127	st->print(" uninitializedThis ");
duke@435	128	} else if (is_uninitialized()) {
duke@435	129	st->print(" uninitialized %d ", bci());
duke@435	130	} else {
duke@435	131	st->print(" class %s ", name()->as_klass_external_name());
duke@435	132	}
duke@435	133	}
duke@435	134	}
duke@435	135
duke@435	136	#endif