Qore Programming Language  1.9.1
QoreStringNode.h
1 /* -*- mode: c++; indent-tabs-mode: nil -*- */
2 /*
3  QoreStringNode.h
4 
5  QoreStringNode Class Definition
6 
7  Qore Programming Language
8 
9  Copyright (C) 2003 - 2022 Qore Technologies, s.r.o.
10 
11  Permission is hereby granted, free of charge, to any person obtaining a
12  copy of this software and associated documentation files (the "Software"),
13  to deal in the Software without restriction, including without limitation
14  the rights to use, copy, modify, merge, publish, distribute, sublicense,
15  and/or sell copies of the Software, and to permit persons to whom the
16  Software is furnished to do so, subject to the following conditions:
17 
18  The above copyright notice and this permission notice shall be included in
19  all copies or substantial portions of the Software.
20 
21  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27  DEALINGS IN THE SOFTWARE.
28 
29  Note that the Qore library is released under a choice of three open-source
30  licenses: MIT (as above), LGPL 2+, or GPL 2+; see README-LICENSE for more
31  information.
32 */
33 
34 #ifndef _QORE_QORESTRINGNODE_H
35 
36 #define _QORE_QORESTRINGNODE_H
37 
38 #include <qore/AbstractQoreNode.h>
39 #include <qore/QoreString.h>
40 
41 #include <cstring>
42 
44 
51 private:
52  QoreStringNode(QoreString* str) = delete;
53  QoreStringNode& operator=(const QoreStringNode&) = delete;
54 
55  // note implemented; declared private here to probit them from being called
56  DLLLOCAL virtual bool getAsBoolImpl() const;
57  DLLLOCAL virtual int getAsIntImpl() const;
58  DLLLOCAL virtual int64 getAsBigIntImpl() const;
59  DLLLOCAL virtual double getAsFloatImpl() const;
60 
61 protected:
63  DLLEXPORT virtual ~QoreStringNode();
64 
65 public:
67  DLLEXPORT QoreStringNode();
68 
70 
74  DLLEXPORT QoreStringNode(const char* str, const QoreEncoding* enc = QCS_DEFAULT);
75 
77 
80  DLLEXPORT QoreStringNode(const QoreString& str);
81 
83 
86  DLLEXPORT QoreStringNode(const QoreStringNode& str);
87 
89 
93  DLLEXPORT QoreStringNode(const std::string& str, const QoreEncoding* enc = QCS_DEFAULT);
94 
95  // copies binary object and makes a base64-encoded string out of it
96  DLLEXPORT QoreStringNode(const BinaryNode* b);
97 
99  DLLEXPORT QoreStringNode(const BinaryNode* bin, size_t maxlinelen);
100 
102 
108  DLLEXPORT QoreStringNode(char* nbuf, size_t nlen, size_t nallocated, const QoreEncoding* enc);
109 
111  DLLEXPORT QoreStringNode(const char* str, size_t len, const QoreEncoding* new_qorecharset = QCS_DEFAULT);
112 
113  // creates a string from a single character
114  DLLEXPORT QoreStringNode(char c);
115 
117 
123  DLLEXPORT int getAsString(QoreString& str, int format_offset, ExceptionSink* xsink) const;
124 
126 
133  DLLEXPORT QoreString* getAsString(bool& del, int format_offset, ExceptionSink* xsink) const;
134 
136 
140  DLLEXPORT virtual QoreString* getStringRepresentation(bool& del) const;
141 
143 
146  DLLEXPORT virtual void getStringRepresentation(QoreString& str) const;
147 
149 
153  DLLEXPORT virtual DateTime* getDateTimeRepresentation(bool& del) const;
154 
156 
159  DLLEXPORT virtual void getDateTimeRepresentation(DateTime& dt) const;
160 
162  DLLEXPORT virtual AbstractQoreNode* realCopy() const;
163 
165 
169  DLLEXPORT virtual bool is_equal_soft(const AbstractQoreNode* v, ExceptionSink* xsink) const;
170 
172 
177  DLLEXPORT virtual bool is_equal_hard(const AbstractQoreNode* v, ExceptionSink* xsink) const;
178 
180  DLLEXPORT virtual const char* getTypeName() const;
181 
183 
188  DLLEXPORT QoreStringNode* convertEncoding(const QoreEncoding* nccs, ExceptionSink* xsink) const;
189 
191 
196  DLLEXPORT QoreStringNode* substr(qore_offset_t offset, ExceptionSink* xsink) const;
197 
199 
206 
208  DLLEXPORT QoreStringNode* reverse() const;
209 
211 
220  DLLEXPORT QoreStringNode* regexSubst(QoreString& match, QoreString& subst, int opts, ExceptionSink* xsink) const;
221 
222  // copy function
223  DLLEXPORT QoreStringNode* copy() const;
224 
226  DLLEXPORT static QoreStringNode* createAndConvertEncoding(const char* str, const QoreEncoding* from, const QoreEncoding* to, ExceptionSink* xsink);
227 
230 
232 
237  DLLEXPORT QoreStringNode* parseBase64ToString(const QoreEncoding* enc, ExceptionSink* xsink) const;
238 
240  DLLEXPORT QoreStringNode* stringRefSelf() const;
241 
243 
248  DLLEXPORT QoreStringNode* extract(qore_offset_t offset, ExceptionSink* xsink);
249 
251 
258 
260 
268 
270  DLLLOCAL static const char* getStaticTypeName() {
271  return "string";
272  }
273 
275  DLLLOCAL static qore_type_t getStaticTypeCode() {
276  return NT_STRING;
277  }
278 
279  static const qore_type_t TYPE = NT_STRING;
280 
282  DLLLOCAL virtual int parseInit(QoreValue& val, QoreParseContext& parse_context);
283 
285  DLLLOCAL QoreStringNode(const char* str, const QoreEncoding* from, const QoreEncoding* to, ExceptionSink* xsink);
286 
288  DLLLOCAL QoreStringNode(struct qore_string_private* p);
289 };
290 
291 class QoreStringNodeMaker : public QoreStringNode {
292 public:
293  DLLEXPORT QoreStringNodeMaker(const char* fmt, ...);
294 
295 private:
296  QoreStringNodeMaker(const QoreStringNodeMaker& str) = delete;
297  QoreStringNodeMaker& operator=(const QoreStringNodeMaker&) = delete;
298 };
299 
300 extern QoreStringNode* NullString;
301 
303 
310 public:
312  DLLEXPORT QoreStringValueHelper(const QoreValue n);
313 
315 
327  DLLEXPORT QoreStringValueHelper(const QoreValue n, const QoreEncoding* enc, ExceptionSink* xsink);
328 
331 
333 
336  DLLEXPORT const QoreString* operator->();
337 
339 
342  DLLEXPORT const QoreString* operator*();
343 
345 
348  DLLEXPORT QoreString* giveString();
349 
351 
353  DLLEXPORT char* giveBuffer();
354 
356  DLLEXPORT bool is_temp() const;
357 
358 private:
359  QoreString* str;
360  bool del;
361 
363  QoreStringValueHelper& operator=(const QoreStringValueHelper&) = delete;
364  void* operator new(size_t) = delete;
365 
367  DLLEXPORT void setup(ExceptionSink* xsink, const QoreValue n, const QoreEncoding* enc = nullptr);
368 };
369 
371 
379 public:
380  DLLEXPORT QoreStringNodeValueHelper(const QoreValue n);
381 
383 
395  DLLEXPORT QoreStringNodeValueHelper(const QoreValue n, const QoreEncoding* enc, ExceptionSink* xsink);
396 
399 
401 
404  DLLEXPORT const QoreStringNode* operator->();
405 
407 
410  DLLEXPORT const QoreStringNode* operator*();
411 
413 
418 
420  DLLEXPORT bool is_temp() const;
421 
422 private:
423  QoreStringNode* str;
424  bool del;
425 
427  QoreStringNodeValueHelper& operator=(const QoreStringNodeValueHelper&) = delete;
428  void* operator new(size_t) = delete;
429 
431  DLLEXPORT void setup(ExceptionSink* xsink, const QoreValue n, const QoreEncoding* enc = nullptr);
432 };
433 
434 #include <qore/ReferenceHolder.h>
435 
437 
441 
442 extern QoreString NothingTypeString;
443 
445 
455 public:
457  DLLEXPORT QoreNodeAsStringHelper(const AbstractQoreNode* n, int format_offset, ExceptionSink* xsink);
458 
460  DLLEXPORT QoreNodeAsStringHelper(const QoreValue n, int format_offset, ExceptionSink* xsink);
461 
464 
466 
469  DLLEXPORT const QoreString* operator->();
470 
472 
475  DLLEXPORT const QoreString* operator*();
476 
478 
481  DLLEXPORT QoreString* giveString();
482 
483 private:
484  QoreString* str;
485  bool del;
486 
488  QoreNodeAsStringHelper& operator=(const QoreNodeAsStringHelper&) = delete;
489  void* operator new(size_t) = delete;
490 };
491 
492 #endif
DLLEXPORT const QoreEncoding * QCS_DEFAULT
the default encoding for the Qore library
The base class for all value and parse types in Qore expression trees.
Definition: AbstractQoreNode.h:57
holds arbitrary binary data
Definition: BinaryNode.h:41
Holds absolute and relative date/time values in Qore with precision to the microsecond.
Definition: DateTime.h:93
container for holding Qore-language exception information and also for registering a "thread_exit" ca...
Definition: ExceptionSink.h:48
defines string encoding functions in Qore
Definition: QoreEncoding.h:83
safely manages the return values to AbstractQoreNode::getAsString(), stack only, cannot be dynamicall...
Definition: QoreStringNode.h:454
DLLEXPORT QoreNodeAsStringHelper(const AbstractQoreNode *n, int format_offset, ExceptionSink *xsink)
makes the call to AbstractQoreNode::getAsString() and manages the return values
DLLEXPORT const QoreString * operator*()
returns the object being managed
DLLEXPORT const QoreString * operator->()
returns the object being managed
DLLEXPORT QoreString * giveString()
returns a copy of the QoreString that the caller owns
DLLEXPORT ~QoreNodeAsStringHelper()
destroys the object and deletes the QoreString pointer being managed if it was a temporary pointer
Qore's string type supported by the QoreEncoding class.
Definition: QoreString.h:93
DLLEXPORT size_t length() const
returns the number of characters (not bytes) in the string
Qore's string value type, reference counted, dynamically-allocated only.
Definition: QoreStringNode.h:50
DLLEXPORT QoreStringNode * substr(qore_offset_t offset, ExceptionSink *xsink) const
returns a new string consisting of all the characters from the current string starting with character...
DLLEXPORT QoreStringNode * reverse() const
return a QoreStringNode with the characters reversed
DLLEXPORT int getAsString(QoreString &str, int format_offset, ExceptionSink *xsink) const
concatenates the string data in double quotes to an existing QoreString
DLLEXPORT QoreStringNode * stringRefSelf() const
references the object and returns a non-const pointer to "this"
DLLEXPORT QoreStringNode * convertEncoding(const QoreEncoding *nccs, ExceptionSink *xsink) const
converts the encoding of the string to the specified encoding, returns 0 if an error occurs,...
virtual DLLEXPORT const char * getTypeName() const
returns the type name as a c string
virtual DLLEXPORT AbstractQoreNode * realCopy() const
returns a copy of the object, the caller owns the reference count
DLLEXPORT QoreStringNode * extract(qore_offset_t offset, ExceptionSink *xsink)
removes characters from the string starting at position "offset" and returns a string of the characte...
static DLLEXPORT QoreStringNode * createAndConvertEncoding(const char *str, const QoreEncoding *from, const QoreEncoding *to, ExceptionSink *xsink)
creates a new QoreStringNode from a string and converts its encoding
virtual DLLLOCAL int parseInit(QoreValue &val, QoreParseContext &parse_context)
returns the type information
virtual DLLEXPORT bool is_equal_soft(const AbstractQoreNode *v, ExceptionSink *xsink) const
tests for equality ("deep compare" including all contained values for container types) with possible ...
virtual DLLEXPORT DateTime * getDateTimeRepresentation(bool &del) const
returns the DateTime representation of this string
DLLEXPORT QoreStringNode()
creates an empty string and assigns the default encoding QCS_DEFAULT
static DLLLOCAL qore_type_t getStaticTypeCode()
returns the type code (useful in templates)
Definition: QoreStringNode.h:275
static DLLLOCAL const char * getStaticTypeName()
returns the type name (useful in templates)
Definition: QoreStringNode.h:270
virtual DLLEXPORT bool is_equal_hard(const AbstractQoreNode *v, ExceptionSink *xsink) const
tests for equality ("deep compare" including all contained values for container types) without type o...
virtual DLLEXPORT ~QoreStringNode()
destructor only called when references = 0, use deref() instead
virtual DLLEXPORT QoreString * getStringRepresentation(bool &del) const
returns the current string and sets del to false
DLLEXPORT QoreStringNode * regexSubst(QoreString &match, QoreString &subst, int opts, ExceptionSink *xsink) const
performs perl5-compatible regular expression substitution
DLLEXPORT QoreStringNode * parseBase64ToString(ExceptionSink *xsink) const
parses the string as a base64-encoded binary and returns the decoded value as a QoreStringNode
this class is used to safely manage calls to AbstractQoreNode::getStringRepresentation() when a QoreS...
Definition: QoreStringNode.h:378
DLLEXPORT bool is_temp() const
returns true if the reference being managed is temporary
DLLEXPORT QoreStringNode * getReferencedValue()
returns a referenced value - the caller will own the reference
DLLEXPORT ~QoreStringNodeValueHelper()
destroys the object and dereferences the QoreStringNode if it is a temporary pointer
DLLEXPORT const QoreStringNode * operator*()
returns the object being managed
DLLEXPORT const QoreStringNode * operator->()
returns the object being managed
this class is used to safely manage calls to AbstractQoreNode::getStringRepresentation() when a simpl...
Definition: QoreStringNode.h:309
DLLEXPORT ~QoreStringValueHelper()
destroys the object and deletes the QoreString pointer being managed if it was a temporary pointer
DLLEXPORT const QoreString * operator*()
returns the object being managed
DLLEXPORT const QoreString * operator->()
returns the object being managed
DLLEXPORT QoreString * giveString()
returns a copy of the QoreString that the caller owns
DLLEXPORT QoreStringValueHelper(const QoreValue n)
creates the object and acquires a pointer to the QoreString representation of the QoreValue passed
DLLEXPORT bool is_temp() const
returns true if the pointer being managed is temporary
DLLEXPORT char * giveBuffer()
returns a char* string that the caller owns and must free()
base class for simple value types
Definition: AbstractQoreNode.h:372
int16_t qore_type_t
used to identify unique Qore data and parse types (descendents of AbstractQoreNode)
Definition: common.h:70
intptr_t qore_offset_t
used for offsets that could be negative
Definition: common.h:76
long long int64
64bit integer type, cannot use int64_t here since it breaks the API on some 64-bit systems due to equ...
Definition: common.h:260
const qore_type_t NT_STRING
type value for QoreStringNode
Definition: node_types.h:45
The main value class in Qore, designed to be passed by value.
Definition: QoreValue.h:275