32 #ifndef _QORE_QORENOTHINGNODE_H 34 #define _QORE_QORENOTHINGNODE_H 36 #include <qore/AbstractQoreNode.h> static QoreNothingNode * nothing()
returns a pointer to Nothing
Definition: QoreNothingNode.h:120
static DLLLOCAL const char * getStaticTypeName()
returns the type name (useful in templates)
Definition: QoreNothingNode.h:104
The base class for all value and parse types in Qore expression trees.
Definition: AbstractQoreNode.h:57
const qore_type_t NT_NOTHING
type value for QoreNothingNode
Definition: node_types.h:42
virtual DLLEXPORT const char * getTypeName() const
returns the type name as a c string
DLLLOCAL QoreValue evalImpl(bool &needs_deref, ExceptionSink *xsink) const
should never be called for value types
Qore's string type supported by the QoreEncoding class.
Definition: QoreString.h:81
DLLEXPORT QoreNothingNode Nothing
the global and unique NOTHING object in Qore
static DLLLOCAL qore_type_t getStaticTypeCode()
returns the type code (useful in templates)
Definition: QoreNothingNode.h:109
this class is for value types that will exists only once in the Qore library, reference counting is d...
Definition: AbstractQoreNode.h:389
Qore's "NOTHING" parse tree/value type, not-referenced counted, not dynamically allocated.
Definition: QoreNothingNode.h:51
virtual DLLEXPORT int getAsString(QoreString &str, int foff, class ExceptionSink *xsink) const
concatenate "<NOTHING>" to an existing QoreString
The main value class in Qore, designed to be passed by value.
Definition: QoreValue.h:267
container for holding Qore-language exception information and also for registering a "thread_exit" ca...
Definition: ExceptionSink.h:48
virtual DLLLOCAL int parseInit(QoreValue &val, QoreParseContext &parse_context)
returns the type information
virtual DLLEXPORT bool is_equal_hard(const AbstractQoreNode *v, ExceptionSink *xsink) const
tests for equality without type conversions (hard compare)
virtual DLLEXPORT QoreValue evalImpl(bool &needs_deref, ExceptionSink *xsink) const
should never be called for value types
int16_t qore_type_t
used to identify unique Qore data and parse types (descendents of AbstractQoreNode) ...
Definition: common.h:70
virtual DLLEXPORT bool is_equal_soft(const AbstractQoreNode *v, ExceptionSink *xsink) const
tests for equality with possible type conversion (soft compare)