MADARA  3.1.8
SystemCallSin.cpp
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1 
2 #ifndef _MADARA_NO_KARL_
3 
4 #include <math.h>
5 
10 
11 
14  const ComponentNodes & nodes)
15  : SystemCallNode (context, nodes)
16 {
17 
18 }
19 
20 // Dtor
22 {
23 }
24 
27 {
29 }
30 
36 {
38 
39  if (nodes_.size () == 1)
40  {
41  bool arg_can_change = false;
43  sin (nodes_[0]->prune (arg_can_change).to_double ()));
44 
45  if (!arg_can_change && dynamic_cast <LeafNode *> (nodes_[0]) == 0)
46  {
47  delete nodes_[0];
48  nodes_[0] = new LeafNode (*(this->logger_), result);
49  }
50 
51  can_change = can_change || arg_can_change;
52  }
53  else
54  {
56  "KARL COMPILE ERROR: System call sin requires 1 argument,"
57  " e.g., #sin (1.5), where 1.5 is radians\n");
58  }
59 
60  return result;
61 }
62 
68 {
69  knowledge::KnowledgeRecord return_value;
70 
71  if (nodes_.size () == 1)
72  {
74  "System call sin is returning the sin "
75  "of its first argument\n");
76 
78  sin (nodes_[0]->evaluate (settings).to_double ()));
79  }
80  else
81  {
83  "KARL RUNTIME ERROR: System call cos requires 1 argument,"
84  " e.g., #sin (1.5), where 1.5 is radians\n");
85  }
86 
87  return return_value;
88 }
89 
90 // accept a visitor
91 void
93  madara::expression::Visitor &visitor) const
94 {
95  visitor.visit (*this);
96 }
97 
98 #endif // _MADARA_NO_KARL_
This class encapsulates an entry in a KnowledgeBase.
SystemCallSin(madara::knowledge::ThreadSafeContext &context, const ComponentNodes &nodes)
Constructor.
virtual ~SystemCallSin(void)
Destructor.
madara::knowledge::KnowledgeRecord KnowledgeRecord
std::deque< ComponentNode * > ComponentNodes
a vector of Component Nodes
logger::Logger * logger_
handle the context
Definition: ComponentNode.h:96
This class stores variables and their values for use by any entity needing state information in a thr...
Defines a node that contains a madara::knowledge::KnowledgeRecord::Integer value. ...
Definition: LeafNode.h:23
virtual void accept(Visitor &visitor) const
Accepts a visitor subclassed from the Visitor class.
virtual madara::knowledge::KnowledgeRecord item(void) const
Returns the value of the node.
#define madara_logger_ptr_log(logger, level,...)
Fast version of the madara::logger::log method for Logger pointers.
Definition: Logger.h:32
virtual madara::knowledge::KnowledgeRecord prune(bool &can_change)
Prunes the expression tree of unnecessary nodes.
Abstract base class for all visitors to all classes that derive from ComponentNode.
Definition: Visitor.h:90
Interface for a MADARA system call.
Settings for applying knowledge updates.
virtual void visit(const LeafNode &node)=0
Visit a LeafNode.
virtual madara::knowledge::KnowledgeRecord evaluate(const madara::knowledge::KnowledgeUpdateSettings &settings)
Evaluates the expression tree.