Qore Programming Language  0.9.3.1
CallReferenceNode.h
1 /* -*- mode: c++; indent-tabs-mode: nil -*- */
2 /*
3  CallReferenceNode.h
4 
5  Qore Programming Language
6 
7  Copyright (C) 2003 - 2018 Qore Technologies, s.r.o.
8 
9  Permission is hereby granted, free of charge, to any person obtaining a
10  copy of this software and associated documentation files (the "Software"),
11  to deal in the Software without restriction, including without limitation
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14  Software is furnished to do so, subject to the following conditions:
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16  The above copyright notice and this permission notice shall be included in
17  all copies or substantial portions of the Software.
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19  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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26 
27  Note that the Qore library is released under a choice of three open-source
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29  information.
30 */
31 
32 #ifndef _QORE_FUNCTIONREFERENCENODE_H
33 
34 #define _QORE_FUNCTIONREFERENCENODE_H
35 
37 
40 private:
42 
44  DLLLOCAL virtual AbstractQoreNode* realCopy() const;
45 
47 
49  DLLLOCAL virtual bool is_equal_soft(const AbstractQoreNode* v, ExceptionSink* xsink) const;
50 
52 
54  DLLLOCAL virtual bool is_equal_hard(const AbstractQoreNode* v, ExceptionSink* xsink) const;
55 
56 protected:
58 
60  DLLLOCAL virtual QoreValue evalImpl(bool& needs_deref, ExceptionSink* xsink) const;
61 
63  DLLLOCAL AbstractCallReferenceNode(bool n_needs_eval, bool n_there_can_be_only_one, qore_type_t n_type = NT_FUNCREF);
64 
65 public:
66  DLLLOCAL AbstractCallReferenceNode(bool n_needs_eval = false, qore_type_t n_type = NT_FUNCREF);
67 
68  DLLLOCAL virtual ~AbstractCallReferenceNode();
69 
71 
73  DLLEXPORT virtual bool getAsBoolImpl() const;
74 
76 
82  DLLLOCAL virtual int getAsString(QoreString& str, int foff, ExceptionSink* xsink) const;
83 
85 
92  DLLLOCAL virtual QoreString* getAsString(bool& del, int foff, ExceptionSink* xsink) const;
93 
95  DLLLOCAL virtual const char* getTypeName() const;
96 
97  DLLLOCAL static const char* getStaticTypeName() {
98  return "call reference";
99  }
100 };
101 
102 class QoreFunction;
103 
106 public:
108  DLLEXPORT ResolvedCallReferenceNode();
109 
111  DLLEXPORT virtual ~ResolvedCallReferenceNode();
112 
114  DLLLOCAL ResolvedCallReferenceNode(bool n_needs_eval, qore_type_t n_type = NT_FUNCREF);
115 
117 
122  DLLLOCAL virtual QoreValue execValue(const QoreListNode* args, ExceptionSink* xsink) const = 0;
123 
125 
128  DLLEXPORT virtual QoreProgram* getProgram() const;
129 
131  DLLLOCAL virtual QoreFunction* getFunction() = 0;
132 
135  ref();
136  return const_cast<ResolvedCallReferenceNode*>(this);
137  }
138 
140  DLLEXPORT virtual bool is_equal_hard(const AbstractQoreNode *v, ExceptionSink *xsink) const;
141 
143  DLLEXPORT virtual bool is_equal_soft(const AbstractQoreNode *v, ExceptionSink *xsink) const;
144 
146  DLLEXPORT virtual AbstractQoreNode* realCopy() const;
147 
148  // must be defined but performs no action
149  DLLEXPORT virtual void parseInit(QoreValue& val, LocalVar *oflag, int pflag, int &lvids,
150  const QoreTypeInfo *&returnTypeInfo);
151 
152  // the following function must be defined, but is never called
153  DLLEXPORT virtual QoreValue evalImpl(bool& needs_deref, ExceptionSink* xsink) const;
154 };
155 
156 #endif
The base class for all value and parse types in Qore expression trees.
Definition: AbstractQoreNode.h:54
virtual DLLEXPORT bool getAsBoolImpl() const
returns false unless perl-boolean-evaluation is enabled, in which case it returns true ...
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
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...
const qore_type_t NT_FUNCREF
type value for AbstractCallReferenceNode
Definition: node_types.h:68
base class for call references, reference-counted, dynamically allocated only
Definition: CallReferenceNode.h:39
Qore&#39;s string type supported by the QoreEncoding class.
Definition: QoreString.h:81
This is the list container type in Qore, dynamically allocated only, reference counted.
Definition: QoreListNode.h:52
virtual DLLEXPORT void parseInit(QoreValue &val, LocalVar *oflag, int pflag, int &lvids, const QoreTypeInfo *&returnTypeInfo)
for use by parse types to initialize them for execution during stage 1 parsing; not exported in the l...
virtual DLLEXPORT QoreProgram * getProgram() const
returns a pointer to the QoreProgram object associated with this reference (can be nullptr) ...
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...
virtual DLLEXPORT AbstractQoreNode * realCopy() const
returns this with the ref count inmcremented; not a real copy
virtual DLLLOCAL const char * getTypeName() const
returns the type name as a c string
virtual DLLLOCAL QoreValue execValue(const QoreListNode *args, ExceptionSink *xsink) const =0
pure virtual function for executing the function reference
The main value class in Qore, designed to be passed by value.
Definition: QoreValue.h:262
supports parsing and executing Qore-language code, reference counted, dynamically-allocated only ...
Definition: QoreProgram.h:126
container for holding Qore-language exception information and also for registering a "thread_exit" ca...
Definition: ExceptionSink.h:46
DLLEXPORT ResolvedCallReferenceNode()
public exported constructor function
virtual DLLEXPORT ~ResolvedCallReferenceNode()
public destructor function
virtual DLLEXPORT bool is_equal_hard(const AbstractQoreNode *v, ExceptionSink *xsink) const
returns true if the other node is the same value
DLLEXPORT void ref() const
increments the reference count
virtual DLLLOCAL QoreFunction * getFunction()=0
Returns the internal function object, if any; can return nullptr.
base class for resolved call references
Definition: CallReferenceNode.h:105
int16_t qore_type_t
used to identify unique Qore data and parse types (descendents of AbstractQoreNode) ...
Definition: common.h:70
virtual DLLLOCAL int getAsString(QoreString &str, int foff, ExceptionSink *xsink) const
concatenate the verbose string representation of the value to an existing QoreString ...
DLLLOCAL ResolvedCallReferenceNode * refRefSelf() const
references itself and returns this
Definition: CallReferenceNode.h:134
virtual DLLEXPORT bool is_equal_soft(const AbstractQoreNode *v, ExceptionSink *xsink) const
returns true if the other node is the same value