361 Symbol* _signature;
362 int _begin;
363 int _end;
364 BasicType _type;
365 bool _at_return_type;
366 GrowableArray<Symbol*>* _names; // symbols created while parsing signature
367
368 public:
369 bool at_return_type() const { return _at_return_type; }
370 bool is_done() const;
371 void next_non_primitive(int t);
372 void next() {
373 Symbol* sig = _signature;
374 int len = sig->utf8_length();
375 if (_end >= len) {
376 _end = len + 1;
377 return;
378 }
379
380 _begin = _end;
381 int t = sig->byte_at(_begin);
382 switch (t) {
383 case 'B': _type = T_BYTE; break;
384 case 'C': _type = T_CHAR; break;
385 case 'D': _type = T_DOUBLE; break;
386 case 'F': _type = T_FLOAT; break;
387 case 'I': _type = T_INT; break;
388 case 'J': _type = T_LONG; break;
389 case 'S': _type = T_SHORT; break;
390 case 'Z': _type = T_BOOLEAN; break;
391 case 'V': _type = T_VOID; break;
392 default : next_non_primitive(t);
393 return;
394 }
395 _end++;
396 }
397
398 SignatureStream(Symbol* signature, bool is_method = true);
399 ~SignatureStream();
400
401 bool is_object() const; // True if this argument is an object
402 bool is_array() const; // True if this argument is an array
403 BasicType type() const { return _type; }
404 Symbol* as_symbol(TRAPS);
405 enum FailureMode { ReturnNull, CNFException, NCDFError };
406 Klass* as_klass(Handle class_loader, Handle protection_domain, FailureMode failure_mode, TRAPS);
407 oop as_java_mirror(Handle class_loader, Handle protection_domain, FailureMode failure_mode, TRAPS);
408 const jbyte* raw_bytes() { return _signature->bytes() + _begin; }
409 int raw_length() { return _end - _begin; }
410
411 // return same as_symbol except allocation of new symbols is avoided.
412 Symbol* as_symbol_or_null();
413
414 // count the number of references in the signature
415 int reference_parameter_count();
416 };
417
418 class SignatureVerifier : public StackObj {
419 public:
420 // Returns true if the symbol is valid method or type signature
421 static bool is_valid_signature(Symbol* sig);
422
423 static bool is_valid_method_signature(Symbol* sig);
424 static bool is_valid_type_signature(Symbol* sig);
425 private:
426
427 static ssize_t is_valid_type(const char*, ssize_t);
428 static bool invalid_name_char(char);
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361 Symbol* _signature;
362 int _begin;
363 int _end;
364 BasicType _type;
365 bool _at_return_type;
366 GrowableArray<Symbol*>* _names; // symbols created while parsing signature
367
368 public:
369 bool at_return_type() const { return _at_return_type; }
370 bool is_done() const;
371 void next_non_primitive(int t);
372 void next() {
373 Symbol* sig = _signature;
374 int len = sig->utf8_length();
375 if (_end >= len) {
376 _end = len + 1;
377 return;
378 }
379
380 _begin = _end;
381 int t = sig->char_at(_begin);
382 switch (t) {
383 case 'B': _type = T_BYTE; break;
384 case 'C': _type = T_CHAR; break;
385 case 'D': _type = T_DOUBLE; break;
386 case 'F': _type = T_FLOAT; break;
387 case 'I': _type = T_INT; break;
388 case 'J': _type = T_LONG; break;
389 case 'S': _type = T_SHORT; break;
390 case 'Z': _type = T_BOOLEAN; break;
391 case 'V': _type = T_VOID; break;
392 default : next_non_primitive(t);
393 return;
394 }
395 _end++;
396 }
397
398 SignatureStream(Symbol* signature, bool is_method = true);
399 ~SignatureStream();
400
401 bool is_object() const; // True if this argument is an object
402 bool is_array() const; // True if this argument is an array
403 BasicType type() const { return _type; }
404 Symbol* as_symbol(TRAPS);
405 enum FailureMode { ReturnNull, CNFException, NCDFError };
406 Klass* as_klass(Handle class_loader, Handle protection_domain, FailureMode failure_mode, TRAPS);
407 oop as_java_mirror(Handle class_loader, Handle protection_domain, FailureMode failure_mode, TRAPS);
408 const u1* raw_bytes() { return _signature->bytes() + _begin; }
409 int raw_length() { return _end - _begin; }
410
411 // return same as_symbol except allocation of new symbols is avoided.
412 Symbol* as_symbol_or_null();
413
414 // count the number of references in the signature
415 int reference_parameter_count();
416 };
417
418 class SignatureVerifier : public StackObj {
419 public:
420 // Returns true if the symbol is valid method or type signature
421 static bool is_valid_signature(Symbol* sig);
422
423 static bool is_valid_method_signature(Symbol* sig);
424 static bool is_valid_type_signature(Symbol* sig);
425 private:
426
427 static ssize_t is_valid_type(const char*, ssize_t);
428 static bool invalid_name_char(char);
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