void FieldType::skip_optional_size(symbolOop signature, int* index) {
jchar c = signature->byte_at(*index);
while (c >= '0' && c <= '9') {
*index = *index + 1;
c = signature->byte_at(*index);
}
}
void symbolTable::add(symbolOop s) {
assert(s->is_symbol(),
"adding something that's not a symbol to the symbol table");
assert(s->is_old(), "all symbols should be tenured");
int hashValue = hash((char*) s->bytes(), s->length());
basic_add(s, hashValue);
}
static bool is_obj(symbolOop signature) {
int sig_length = signature->utf8_length();
// Must start with 'L' and end with ';'
return (sig_length >= 2 &&
(signature->byte_at(0) == 'L') &&
(signature->byte_at(sig_length - 1) == ';'));
}
bool symbolTable::is_present(symbolOop sym) {
char* name = (char*) sym->bytes();
int len = sym->length();
int hashValue = hash(name, len);
symbolTableEntry* bucket = bucketFor(hashValue);
if (bucket->is_empty()) return false;
if (bucket->is_symbol())
return bucket->get_symbol()->equals(name, len);
for (symbolTableLink* l = bucket->get_link(); l; l = l->next)
if (l->symbol->equals(name, len)) return true;
return false;
}
symbolOop symbolTable::basic_add(symbolOop s, int hashValue) {
assert(s->is_symbol(),
"adding something that's not a symbol to the symbol table");
assert(s->is_old(), "all symbols should be tenured");
// Add the indentity hash for the new symbol
s->hash_value();
assert(!s->mark()->has_valid_hash(), "should not have a hash yet");
s->set_mark(s->mark()->set_hash(s->hash_value()));
assert(s->mark()->has_valid_hash(), "should have a hash now");
symbolTableEntry* bucket = bucketFor(hashValue);
if (bucket->is_empty()) {
bucket->set_symbol(s);
} else {
symbolTableLink* old_link;
if (bucket->is_symbol()) {
old_link = Universe::symbol_table->new_link(bucket->get_symbol());
} else {
old_link = bucket->get_link();
}
bucket->set_link(Universe::symbol_table->new_link(s, old_link));
}
return s;
}
void checkMarkedSymbol(char* message, oop result, symbolOop expected) {
ResourceMark rm;
char text[200];
ASSERT_TRUE_M(result->is_mark(), "Should be marked");
sprintf(text,
"%s. Should be: %s, was: %s",
message,
expected->as_string(),
unmarkSymbol(result)->as_string());
ASSERT_TRUE_M(unmarkSymbol(result) == expected, text);
}
// Check if it is a valid array signature
bool FieldType::is_valid_array_signature(symbolOop sig) {
assert(sig->utf8_length() > 1, "this should already have been checked");
assert(sig->byte_at(0) == '[', "this should already have been checked");
// The first character is already checked
int i = 1;
int len = sig->utf8_length();
// First skip all '['s
while(i < len - 1 && sig->byte_at(i) == '[') i++;
// Check type
switch(sig->byte_at(i)) {
case 'B': // T_BYTE
case 'C': // T_CHAR
case 'D': // T_DOUBLE
case 'F': // T_FLOAT
case 'I': // T_INT
case 'J': // T_LONG
case 'S': // T_SHORT
case 'Z': // T_BOOLEAN
// If it is an array, the type is the last character
return (i + 1 == len);
case 'L':
// If it is an object, the last character must be a ';'
return sig->byte_at(len - 1) == ';';
}
return false;
}
BasicType FieldType::get_array_info(symbolOop signature, jint* dimension, symbolOop* object_key, TRAPS) {
assert(basic_type(signature) == T_ARRAY, "must be array");
int index = 1;
int dim = 1;
skip_optional_size(signature, &index);
while (signature->byte_at(index) == '[') {
index++;
dim++;
skip_optional_size(signature, &index);
}
ResourceMark rm;
symbolOop element = oopFactory::new_symbol(signature->as_C_string() + index, CHECK_(T_BYTE));
BasicType element_type = FieldType::basic_type(element);
if (element_type == T_OBJECT) {
char* object_type = element->as_C_string();
object_type[element->utf8_length() - 1] = '\0';
*object_key = oopFactory::new_symbol(object_type + 1, CHECK_(T_BYTE));
}
// Pass dimension back to caller
*dimension = dim;
return element_type;
}
symbolOop SymbolTable::ensure_strong_ref(WeakHashtableEntry* e, symbolOop sym) {
assert0(UseGenPauselessGC);
WeakHashtableEntry::EnsuredStrength strength = e->ensure_strong_ref();
if (strength == WeakHashtableEntry::IsDead) {
return NULL;
}
if (strength == WeakHashtableEntry::MustMark) {
GPGC_OldCollector::mutator_mark_leaf_conditional(sym);
return sym;
}
// In addition the symbolOop being StrongRef, we have to make sure that its klassRef
// is remapped and NMTed properly. We don't mark through the klassRef, however.
GPGC_OldCollector::remap_and_nmt_only(sym->klass_addr());
return sym;
}
static bool print_selector_with_arguments(prettyPrintStream* output,
symbolOop selector,
GrowableArray<astNode*>* arguments,
bool split) {
if (selector->is_binary()) {
// binary send
output->print(selector->as_string());
output->space();
astNode* arg = arguments->at(0);
bool wrap = should_wrap(1, arg);
if (wrap) output->print("(");
bool result = arg->print(output);
if (wrap) output->print(")");
return result;
}
int arg = arguments->length();
if (arg == 0) {
output->print(selector->as_string());
return false;
}
for (int index = 1; index <= selector->length(); index++) {
int c = selector->byte_at(index);
output->print_char(c);
if (c == ':') {
output->space();
astNode* a = arguments->at(--arg);
bool wrap = should_wrap(2, a);
if (wrap) output->print("(");
a->print(output);
if (wrap) output->print(")");
if (index < selector->length()) {
if (split) output->newline();
else output->space();
}
}
}
return split;
}
BasicType FieldType::basic_type(symbolOop signature) {
return char2type(signature->byte_at(0));
}
void symbolTable::add_symbol(symbolOop s) {
basic_add(s, hash((char*) s->bytes(), s->length()));
}
void callBack::initialize(oop receiver, symbolOop selector) {
assert(selector->is_symbol(), "must be symbol");
Universe::set_callBack(receiver, selector);
}
// Testing
static bool is_array(symbolOop signature) { return signature->utf8_length() > 1 && signature->byte_at(0) == '[' && is_valid_array_signature(signature); }
