--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/make/tools/GenerateCharacter/check_class.c.template Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,499 @@
+/*
+ * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+/* This file was generated AUTOMATICALLY from a template file Wed Jun 17 10:43:47 PDT 1998 */
+
+/*-
+ * code for verifying the date in a ClassClass structure for internal
+ * consistency.
+ */
+
+#include <ctype.h>
+
+#include "oobj.h"
+#include "interpreter.h"
+#include "bool.h"
+#include "utf.h"
+#include "tree.h"
+#include "sys_api.h"
+
+extern bool_t verify_class_codes(ClassClass *cb);
+
+static bool_t verify_constant_pool(ClassClass *cb);
+
+static bool_t is_legal_fieldname(ClassClass *cb, char *name, int type);
+static bool_t is_legal_method_signature(ClassClass *cb, char *name, char *signature);
+static bool_t is_legal_field_signature(ClassClass *cb, char *name, char *signature);
+
+static char *skip_over_fieldname(char *name, bool_t slash_okay);
+static char *skip_over_field_signature(char *name, bool_t void_okay);
+
+static void CCerror (ClassClass *cb, char *format, ...);
+
+
+/* Argument for is_legal_fieldname */
+enum { LegalClass, LegalField, LegalMethod };
+
+
+
+
+bool_t
+VerifyClass(ClassClass *cb)
+{
+ bool_t result = TRUE;
+ struct methodblock *mb;
+ struct fieldblock *fb;
+ int i;
+ if (CCIs(cb, Verified))
+ return TRUE;
+ if (!verify_constant_pool(cb))
+ return FALSE;
+ /* Make sure all the method names and signatures are okay */
+ for (i = cbMethodsCount(cb), mb = cbMethods(cb); --i >= 0; mb++) {
+ char *name = mb->fb.name;
+ char *signature = mb->fb.signature;
+ if (! (is_legal_fieldname(cb, name, LegalMethod) &&
+ is_legal_method_signature(cb, name, signature)))
+ result = FALSE;
+ }
+ /* Make sure all the field names and signatures are okay */
+ for (i = cbFieldsCount(cb), fb = cbFields(cb); --i >= 0; fb++) {
+ if (! (is_legal_fieldname(cb, fb->name, LegalField) &&
+ is_legal_field_signature(cb, fb->name, fb->signature)))
+ result = FALSE;
+ }
+ /* Make sure we are not overriding any final methods or classes*/
+ if (cbIsInterface(cb)) {
+ struct methodblock *mb;
+ if ((cbSuperclass(cb) == NULL) ||
+ (cbSuperclass(cb) != classJavaLangObject)) {
+ CCerror(cb, "Interface %s has bad superclass", cbName(cb));
+ result = FALSE;
+ }
+ for (i = cbMethodsCount(cb), mb = cbMethods(cb); --i >= 0; mb++) {
+ if (mb->fb.access & ACC_STATIC) {
+ if (mb->fb.name[0] != '<') {
+ /* Only internal methods can be static */
+ CCerror(cb, "Illegal static method %s in interface %s",
+ mb->fb.name, cbName(cb));
+ result = FALSE;
+ }
+ }
+ }
+ } else if (cbSuperclass(cb)) {
+ ClassClass *super_cb;
+ unsigned bitvector_size = (unsigned)(cbMethodTableSize(cb) + 31) >> 5;
+ long *bitvector = sysCalloc(bitvector_size, sizeof(long));
+ for (super_cb = cbSuperclass(cb); ; super_cb = cbSuperclass(super_cb)) {
+ if (cbAccess(super_cb) & ACC_FINAL) {
+ CCerror(cb, "Class %s is subclass of final class %s",
+ cbName(cb), cbName(super_cb));
+ result = FALSE;
+ }
+ mb = cbMethods(super_cb);
+ for (i = cbMethodsCount(super_cb); --i >= 0; mb++) {
+ if (mb->fb.access & ACC_FINAL) {
+ unsigned offset = mb->fb.u.offset;
+ bitvector[offset >> 5] |= (1 << (offset & 0x1F));
+ }
+ }
+ if (cbSuperclass(super_cb) == NULL) break;
+ }
+ for (i = cbMethodsCount(cb), mb = cbMethods(cb); --i >= 0; mb++) {
+ unsigned offset = mb->fb.u.offset;
+ if ((offset > 0)
+ && bitvector[offset >> 5] & (1 << (offset & 0x1F))) {
+ CCerror(cb, "Class %s overrides final method %s.%s",
+ cbName(cb), mb->fb.name, mb->fb.signature);
+ result = FALSE;
+ }
+ }
+ sysFree(bitvector);
+ } else if (cb != classJavaLangObject) {
+ CCerror(cb, "Class %s does not have superclass", cbName(cb));
+ result = FALSE;
+ }
+
+ if (result)
+ result = verify_class_codes(cb);
+ if (result)
+ CCSet(cb, Verified);
+ return result;
+}
+
+
+static bool_t
+verify_constant_pool(ClassClass *cb)
+{
+ union cp_item_type *cp = cbConstantPool(cb);
+ long cp_count = cbConstantPoolCount(cb);
+ unsigned char *type_table;
+ int i, type;
+
+ const int utf8_resolved = (CONSTANT_Utf8 | CONSTANT_POOL_ENTRY_RESOLVED);
+
+ if (cp_count == 0) /* Primitive classes */
+ return TRUE;
+ type_table = cp[CONSTANT_POOL_TYPE_TABLE_INDEX].type;
+ /* Let's make two quick passes over the constant pool. The first one
+ * checks that everything is of the right type. */
+ for (i = 1; i < cp_count; i++) {
+ switch(type = type_table[i]) {
+ case CONSTANT_String:
+ case CONSTANT_Class: {
+ int index = cp[i].i;
+ if ( (index < 1)
+ || (index >= cp_count)
+ || (type_table[index] != utf8_resolved)) {
+ CCerror(cb, "Bad index in constant pool #%d", i);
+ return FALSE;
+ }
+ break;
+ }
+
+ case CONSTANT_String | CONSTANT_POOL_ENTRY_RESOLVED:
+ /* This can only happen if a string is the "initial" value of
+ * some final static String. We assume that the checking has
+ * already been done.
+ */
+ break;
+
+ case CONSTANT_Fieldref:
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref:
+ case CONSTANT_NameAndType: {
+ unsigned index = (unsigned)(cp[i].i);
+ int key1 = index >> 16;
+ int key2 = index & 0xFFFF;
+ if (key1 < 1 || key1 >= cp_count
+ || key2 < 1 || key2 >= cp_count) {
+ CCerror(cb, "Bad index in constant pool #%d", i);
+ return FALSE;
+ }
+ if (type == CONSTANT_NameAndType) {
+ if ( (type_table[key1] != utf8_resolved)
+ || (type_table[key2] != utf8_resolved)) {
+ CCerror(cb, "Bad index in constant pool.");
+ return FALSE;
+ }
+ } else {
+ if ( ((type_table[key1] & CONSTANT_POOL_ENTRY_TYPEMASK)
+ != CONSTANT_Class)
+ || ((type_table[key2] != CONSTANT_NameAndType))) {
+ CCerror(cb, "Bad index in constant pool #%d", i);
+ return FALSE;
+ }
+ }
+ break;
+ }
+
+ case CONSTANT_Fieldref | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_Methodref | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_InterfaceMethodref | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_NameAndType | CONSTANT_POOL_ENTRY_RESOLVED:
+ CCerror(cb, "Improperly resolved constant pool #%d", i);
+ return FALSE;
+
+
+ case CONSTANT_Class | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_Utf8 | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_Integer | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_Float | CONSTANT_POOL_ENTRY_RESOLVED:
+ break;
+
+ case CONSTANT_Long | CONSTANT_POOL_ENTRY_RESOLVED:
+ case CONSTANT_Double | CONSTANT_POOL_ENTRY_RESOLVED:
+ if ((i + 1 >= cp_count) ||
+ (type_table[i + 1] != CONSTANT_POOL_ENTRY_RESOLVED)) {
+ CCerror(cb, "Improper constant pool long/double #%d", i);
+ return FALSE;
+ } else {
+ i++;
+ break;
+ }
+
+ case CONSTANT_Integer:
+ case CONSTANT_Float:
+ case CONSTANT_Long:
+ case CONSTANT_Double:
+ case CONSTANT_Utf8:
+ CCerror(cb, "Improperly unresolved constant pool #%d", i);
+ return FALSE;
+
+
+ default:
+ CCerror(cb, "Illegal constant pool type at #%d", i);
+ return FALSE;
+
+
+ }
+ }
+ for (i = 1; i < cp_count; i++) {
+ switch(type = type_table[i]) {
+ case CONSTANT_Class: {
+ int index = cp[i].i;
+ if (!is_legal_fieldname(cb, cp[index].cp, LegalClass))
+ return FALSE;
+ break;
+ }
+
+ case CONSTANT_Fieldref:
+ case CONSTANT_Methodref:
+ case CONSTANT_InterfaceMethodref: {
+ unsigned index = (unsigned)(cp[i].i);
+ int name_type_index = index & 0xFFFF;
+ int name_type_key = cp[name_type_index].i;
+ int name_index = name_type_key >> 16;
+ int signature_index = name_type_key & 0xFFFF;
+ char *name = cp[name_index].cp;
+ char *signature = cp[signature_index].cp;
+
+ if (type == CONSTANT_Fieldref) {
+ if (! (is_legal_fieldname(cb, name, LegalField) &&
+ is_legal_field_signature(cb, name, signature)))
+ return FALSE;
+ } else {
+ if (! (is_legal_fieldname(cb, name, LegalMethod) &&
+ is_legal_method_signature(cb, name, signature)))
+ return FALSE;
+ }
+ break;
+ }
+ }
+ }
+ return TRUE;
+}
+
+
+/* Return true if the entire second argument consists of a legal fieldname
+ * (or classname, if the third argument is LegalClass).
+ */
+
+static bool_t
+is_legal_fieldname(ClassClass *cb, char *name, int type)
+{
+ bool_t result;
+ if (name[0] == '<') {
+ result = (type == LegalMethod) &&
+ ((strcmp(name, "<init>") == 0) ||
+ (strcmp(name, "<clinit>") == 0));
+ } else {
+ char *p;
+ if (type == LegalClass && name[0] == SIGNATURE_ARRAY) {
+ p = skip_over_field_signature(name, FALSE);
+ } else {
+ p = skip_over_fieldname(name, type == LegalClass);
+ }
+ result = (p != 0 && p[0] == '\0');
+ }
+ if (!result) {
+ char *thing = (type == LegalField) ? "Field"
+ : (type == LegalMethod) ? "Method" : "Class";
+
+ CCerror(cb, "Illegal %s name \"%s\"", thing, name);
+ return FALSE;
+ } else {
+ return TRUE;
+
+ }
+}
+
+/* Return true if the entire string consists of a legal field signature */
+static bool_t
+is_legal_field_signature(ClassClass *cb, char *fieldname, char *signature)
+{
+ char *p = skip_over_field_signature(signature, FALSE);
+ if (p != 0 && p[0] == '\0') {
+ return TRUE;
+ } else {
+ CCerror(cb, "Field \"%s\" has illegal signature \"%s\"",
+ fieldname, signature);
+ return FALSE;
+ }
+}
+
+
+static bool_t
+is_legal_method_signature(ClassClass *cb, char *methodname, char *signature)
+{
+ char *p = signature;
+ char *next_p;
+ /* The first character must be a '(' */
+ if (*p++ == SIGNATURE_FUNC) {
+ /* Skip over however many legal field signatures there are */
+ while ((next_p = skip_over_field_signature(p, FALSE)) != 0)
+ p = next_p;
+ /* The first non-signature thing better be a ')' */
+ if (*p++ == SIGNATURE_ENDFUNC) {
+ if (methodname[0] == '<') {
+ /* All internal methods must return void */
+ if ((p[0] == SIGNATURE_VOID) && (p[1] == '\0'))
+ return TRUE;
+ } else {
+ /* Now, we better just have a return value. */
+ next_p = skip_over_field_signature(p, TRUE);
+ if (next_p && next_p[0] == '\0')
+ return TRUE;
+ }
+ }
+ }
+ CCerror(cb, "Method \"%s\" has illegal signature \"%s\"",
+ methodname, signature);
+ return FALSE;
+}
+
+ $$Tables
+
+/*
+ * This code mirrors Character.isJavaIdentifierStart. It determines whether
+ * the specified character is a legal start of a Java identifier as per JLS.
+ *
+ * The parameter ch is the character to be tested; return 1 if the
+ * character is a letter, 0 otherwise.
+ */
+#define isJavaIdentifierStart(ch) ($$Lookup(ch) & $$maskIsJavaIdentifierStart)
+
+/*
+ * This code mirrors Character.isJavaIdentifierPart. It determines whether
+ * the specified character is a legal part of a Java identifier as per JLS.
+ *
+ * The parameter ch is the character to be tested; return 1 if the
+ * character is a digit, 0 otherwise.
+ */
+#define isJavaIdentifierPart(ch) ($$Lookup(ch) & $$maskIsJavaIdentifierPart)
+
+/* Take pointer to a string. Skip over the longest part of the string that
+ * could be taken as a fieldname. Allow '/' if slash_okay is TRUE.
+ *
+ * Return a pointer to just past the fieldname. Return NULL if no fieldname
+ * at all was found, or in the case of slash_okay being true, we saw
+ * consecutive slashes (meaning we were looking for a qualified path but
+ * found something that was badly-formed).
+ */
+static char *
+skip_over_fieldname(char *name, bool_t slash_okay)
+{
+ bool_t first;
+ char *p;
+ unicode last_ch = 0;
+ for (p = name, first = TRUE; ; first = FALSE) {
+ char *old_p = p;
+ unicode ch = next_utf2unicode(&p);
+ if (isJavaIdentifierStart(ch) || (!first && isJavaIdentifierPart(ch))
+ || (slash_okay && ch == '/' && !first)
+ || ch == '_' || ch == '$') {
+ if (ch == '/' && last_ch == '/') {
+ return 0; /* Don't permit consecutive slashes */
+ } else {
+ last_ch = ch;
+ }
+ } else {
+ return first ? 0 : old_p;
+ }
+ }
+}
+
+/* Take pointer to a string. Skip over the longest part of the string that
+ * could be taken as a field signature. Allow "void" if void_okay.
+ *
+ * Return a pointer to just past the signature. Return NULL if no legal
+ * signature is found.
+ */
+
+static char *
+skip_over_field_signature(char *name, bool_t void_okay)
+{
+ for (;;) {
+ switch (name[0]) {
+ case SIGNATURE_VOID:
+ if (!void_okay) return 0;
+ /* FALL THROUGH */
+ case SIGNATURE_BOOLEAN:
+ case SIGNATURE_BYTE:
+ case SIGNATURE_CHAR:
+ case SIGNATURE_SHORT:
+ case SIGNATURE_INT:
+ case SIGNATURE_FLOAT:
+ case SIGNATURE_LONG:
+ case SIGNATURE_DOUBLE:
+ return name + 1;
+
+ case SIGNATURE_CLASS: {
+ /* Skip over the classname, if one is there. */
+ char *p = skip_over_fieldname(name + 1, TRUE);
+ /* The next character better be a semicolon. */
+ if (p && p[0] == ';')
+ return p + 1;
+ return 0;
+ }
+
+ case SIGNATURE_ARRAY:
+ /* The rest of what's there better be a legal signature. */
+ name++;
+ void_okay = FALSE;
+ break;
+
+ default:
+ return 0;
+ }
+ }
+}
+
+
+static void
+CCerror (ClassClass *cb, char *format, ...)
+{
+ if (verbose) {
+ va_list args;
+ jio_fprintf(stderr, "VERIFIER CLASS ERROR %s:\n", cbName(cb));
+ va_start(args, format);
+ jio_vfprintf(stderr, format, args);
+ va_end(args);
+ jio_fprintf(stderr, "\n");
+ }
+}
+
+/* For use from outside the file. Determine if the specified name is legal
+ * UTF name for a classname.
+ *
+ * Note that this routine expects the internal form of qualified classes:
+ * the dots should have been replaced by slashes.
+ */
+bool_t IsLegalClassname(char *name, bool_t allowArrayClass)
+{
+ char *p;
+ if (name[0] == SIGNATURE_ARRAY) {
+ if (!allowArrayClass) {
+ return FALSE;
+ } else {
+ /* Everything that's left better be a field signature */
+ p = skip_over_field_signature(name, FALSE);
+ }
+ } else {
+ /* skip over the fieldname. Slashes are okay */
+ p = skip_over_fieldname(name, TRUE);
+ }
+ return (p != 0 && p[0] == '\0');
+}