CallReferenceNode.h
/* -*- mode: c++; indent-tabs-mode: nil -*- */
/*
CallReferenceNode.h
Qore Programming Language
Copyright (C) 2003 - 2021 Qore Technologies, s.r.o.
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Note that the Qore library is released under a choice of three open-source
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*/
#ifndef _QORE_FUNCTIONREFERENCENODE_H
#define _QORE_FUNCTIONREFERENCENODE_H
class AbstractCallReferenceNode : public AbstractQoreNode {
private:
DLLLOCAL virtual AbstractQoreNode* realCopy() const;
DLLLOCAL virtual bool is_equal_soft(const AbstractQoreNode* v, ExceptionSink* xsink) const;
DLLLOCAL virtual bool is_equal_hard(const AbstractQoreNode* v, ExceptionSink* xsink) const;
protected:
DLLLOCAL virtual QoreValue evalImpl(bool& needs_deref, ExceptionSink* xsink) const;
DLLLOCAL AbstractCallReferenceNode(bool n_needs_eval, bool n_there_can_be_only_one,
qore_type_t n_type = NT_FUNCREF);
public:
DLLLOCAL AbstractCallReferenceNode(bool n_needs_eval = false, qore_type_t n_type = NT_FUNCREF);
DLLLOCAL virtual ~AbstractCallReferenceNode();
DLLEXPORT virtual bool getAsBoolImpl() const;
DLLLOCAL virtual int getAsString(QoreString& str, int foff, ExceptionSink* xsink) const;
DLLLOCAL virtual QoreString* getAsString(bool& del, int foff, ExceptionSink* xsink) const;
DLLLOCAL virtual const char* getTypeName() const;
DLLLOCAL static const char* getStaticTypeName() {
return "call reference";
}
};
class QoreFunction;
class ResolvedCallReferenceNode : public AbstractCallReferenceNode {
public:
DLLEXPORT ResolvedCallReferenceNode();
DLLEXPORT virtual ~ResolvedCallReferenceNode();
DLLLOCAL ResolvedCallReferenceNode(bool n_needs_eval, qore_type_t n_type = NT_FUNCREF);
DLLLOCAL virtual QoreValue execValue(const QoreListNode* args, ExceptionSink* xsink) const = 0;
DLLEXPORT virtual QoreProgram* getProgram() const;
DLLLOCAL virtual QoreFunction* getFunction() = 0;
DLLLOCAL ResolvedCallReferenceNode* refRefSelf() const {
ref();
return const_cast< ResolvedCallReferenceNode*>(this);
}
DLLEXPORT virtual bool is_equal_hard(const AbstractQoreNode *v, ExceptionSink *xsink) const;
DLLEXPORT virtual bool is_equal_soft(const AbstractQoreNode *v, ExceptionSink *xsink) const;
DLLEXPORT virtual AbstractQoreNode* realCopy() const;
// must be defined but performs no action
DLLEXPORT virtual int parseInit(QoreValue& val, QoreParseContext& parse_context);
// the following function must be defined, but is never called
DLLEXPORT virtual QoreValue evalImpl(bool& needs_deref, ExceptionSink* xsink) const;
};
#endif
AbstractQoreNode
The base class for all value and parse types in Qore expression trees.
Definition: AbstractQoreNode.h:57
AbstractCallReferenceNode::getAsBoolImpl
virtual DLLEXPORT bool getAsBoolImpl() const
returns false unless perl-boolean-evaluation is enabled, in which case it returns true ...
AbstractCallReferenceNode::AbstractCallReferenceNode
DLLLOCAL AbstractCallReferenceNode(bool n_needs_eval, bool n_there_can_be_only_one, qore_type_t n_type=NT_FUNCREF)
protected constructor for subclasses that are not reference-counted
AbstractCallReferenceNode::evalImpl
virtual DLLLOCAL QoreValue evalImpl(bool &needs_deref, ExceptionSink *xsink) const
this function should never be called for function references; this function should never be called di...
NT_FUNCREF
const qore_type_t NT_FUNCREF
type value for AbstractCallReferenceNode
Definition: node_types.h:68
AbstractCallReferenceNode
base class for call references, reference-counted, dynamically allocated only
Definition: CallReferenceNode.h:39
QoreString
Qore&#39;s string type supported by the QoreEncoding class.
Definition: QoreString.h:81
QoreListNode
This is the list container type in Qore, dynamically allocated only, reference counted.
Definition: QoreListNode.h:52
ResolvedCallReferenceNode::getProgram
virtual DLLEXPORT QoreProgram * getProgram() const
returns a pointer to the QoreProgram object associated with this reference (can be nullptr) ...
ResolvedCallReferenceNode::evalImpl
virtual DLLEXPORT QoreValue evalImpl(bool &needs_deref, ExceptionSink *xsink) const
this function should never be called for function references; this function should never be called di...
ResolvedCallReferenceNode::realCopy
virtual DLLEXPORT AbstractQoreNode * realCopy() const
returns this with the ref count inmcremented; not a real copy
AbstractCallReferenceNode::getTypeName
virtual DLLLOCAL const char * getTypeName() const
returns the type name as a c string
ResolvedCallReferenceNode::execValue
virtual DLLLOCAL QoreValue execValue(const QoreListNode *args, ExceptionSink *xsink) const =0
pure virtual function for executing the function reference
QoreValue
The main value class in Qore, designed to be passed by value.
Definition: QoreValue.h:267
QoreProgram
supports parsing and executing Qore-language code, reference counted, dynamically-allocated only ...
Definition: QoreProgram.h:127
ExceptionSink
container for holding Qore-language exception information and also for registering a "thread_exit" ca...
Definition: ExceptionSink.h:48
ResolvedCallReferenceNode::ResolvedCallReferenceNode
DLLEXPORT ResolvedCallReferenceNode()
public exported constructor function
ResolvedCallReferenceNode::~ResolvedCallReferenceNode
virtual DLLEXPORT ~ResolvedCallReferenceNode()
public destructor function
ResolvedCallReferenceNode::is_equal_hard
virtual DLLEXPORT bool is_equal_hard(const AbstractQoreNode *v, ExceptionSink *xsink) const
returns true if the other node is the same value
AbstractQoreNode::ref
DLLEXPORT void ref() const
increments the reference count
ResolvedCallReferenceNode::getFunction
virtual DLLLOCAL QoreFunction * getFunction()=0
Returns the internal function object, if any; can return nullptr.
ResolvedCallReferenceNode
base class for resolved call references
Definition: CallReferenceNode.h:109
qore_type_t
int16_t qore_type_t
used to identify unique Qore data and parse types (descendents of AbstractQoreNode) ...
Definition: common.h:70
ResolvedCallReferenceNode::parseInit
virtual DLLEXPORT int parseInit(QoreValue &val, QoreParseContext &parse_context)
for use by parse types to initialize them for execution during stage 1 parsing
AbstractCallReferenceNode::getAsString
virtual DLLLOCAL int getAsString(QoreString &str, int foff, ExceptionSink *xsink) const
concatenate the verbose string representation of the value to an existing QoreString ...
ResolvedCallReferenceNode::refRefSelf
DLLLOCAL ResolvedCallReferenceNode * refRefSelf() const
references itself and returns this
Definition: CallReferenceNode.h:138
ResolvedCallReferenceNode::is_equal_soft
virtual DLLEXPORT bool is_equal_soft(const AbstractQoreNode *v, ExceptionSink *xsink) const
returns true if the other node is the same value