SyntaxNode Class Reference

Base class for all nodes in a syntax tree. More...

#include <nodes.h>

Inheritance diagram for SyntaxNode:

Collaboration diagram for SyntaxNode:

Public Member Functions
	SyntaxNode ()
virtual	~SyntaxNode ()
void	SetFirstNode ()
bool	GetFirstNode () const
SyntaxNode *	GetParent () const
void	SetParent (SyntaxNode *node)
virtual NodeType	GetNodeType ()=0
virtual ReductionType	GetReductionType ()
virtual void	ResetIterator ()
virtual SyntaxNode *	GetNext ()=0
virtual char *	GetTextCode ()=0
virtual char *	Execute ()=0
virtual void	Attach (SyntaxNode *node)=0
virtual void	Detach (SyntaxNode *node)=0
virtual void	Replace (SyntaxNode *n, SyntaxNode *x)=0

Protected Attributes
CharBuffer *	output
SyntaxNode *	parent
SyntaxNode *	iterator
bool	leftBottom

Detailed Description

Base class for all nodes in a syntax tree.

More info is available at Wikipedia: https://wikipedia.org/wiki/Abstract_syntax_tree

Definition at line 65 of file nodes.h.

Constructor & Destructor Documentation

SyntaxNode()

SyntaxNode::SyntaxNode

(

)

Definition at line 42 of file nodes.cpp.

References CharBuffer::CharBuffer(), iterator, leftBottom, output, and parent.

Referenced by ErrorNode::ErrorNode(), ExpressionNode::ExpressionNode(), StatementBlockNode::StatementBlockNode(), and StatementNode::StatementNode().

{
    output = new CharBuffer();
    parent = nullptr;
    iterator = nullptr;
    leftBottom = false;
}

Here is the call graph for this function:

Here is the caller graph for this function:

~SyntaxNode()

SyntaxNode::~SyntaxNode ( )

virtual

Definition at line 50 of file nodes.cpp.

References output.

{
    delete output;
}

Member Function Documentation

Attach()

virtual void SyntaxNode::Attach ( SyntaxNode *  node )

pure virtual

Implemented in StatementBlockNode, NumericValueNode, ErrorNode, VariableNode, NumericOperator, FactorialNode, AbsoluteNode, FunctionNode, UnaryNode, StatementNode, SilentStatement, EvalStatement, and UserFunctionNode.

Referenced by Optimizer::BalanceTree().

Here is the caller graph for this function:

Detach()

virtual void SyntaxNode::Detach ( SyntaxNode *  node )

pure virtual

Implemented in StatementBlockNode, NumericValueNode, ErrorNode, VariableNode, NumericOperator, FactorialNode, AbsoluteNode, FunctionNode, UnaryNode, StatementNode, SilentStatement, EvalStatement, and UserFunctionNode.

Referenced by Optimizer::BalanceTree(), and Optimizer::ReduceUnaryNodes().

Here is the caller graph for this function:

Execute()

virtual char* SyntaxNode::Execute ( )

pure virtual

Implemented in StatementBlockNode, ErrorNode, ExpressionNode, ListVariablesStatement, StatementNode, SilentStatement, EmptyStatement, DeleteStatement, HelpStatement, DigitsStatement, EvalStatement, InputStatement, OutputStatement, PrefsStatement, PromptStatement, AboutStatement, ClearStatement, ExitStatement, FunctionDefinitionNode, ListFunctionsStatement, LicenseStatement, MemoryStatement, VersionStatement, ListStatement, PlotStatement, DrawStatement, ExecuteStatement, LoadStatement, SaveStatement, and ShowStatement.

Referenced by Evaluator::Evaluate(), LoadStatement::Execute(), ExecuteStatement::Execute(), StatementBlockNode::Execute(), and PreferencesBase::SetPrefs().

Here is the caller graph for this function:

GetFirstNode()

bool SyntaxNode::GetFirstNode

(

)

const

Definition at line 60 of file nodes.cpp.

References leftBottom.

{
    return leftBottom;
}

GetNext()

virtual SyntaxNode* SyntaxNode::GetNext ( )

pure virtual

Implemented in NumericValueNode, StatementBlockNode, ErrorNode, VariableNode, NumericOperator, FactorialNode, AbsoluteNode, FunctionNode, UnaryNode, SilentStatement, StatementNode, EvalStatement, and UserFunctionNode.

Referenced by Optimizer::BalanceTree(), Optimizer::GetTreeDepth(), Optimizer::ReduceUnaryNodes(), Optimizer::ReduceValueNodes(), Optimizer::TagChildren(), and Optimizer::TagStartNode().

Here is the caller graph for this function:

GetNodeType()

virtual NodeType SyntaxNode::GetNodeType ( )

pure virtual

Implemented in StatementBlockNode, ErrorNode, ExpressionNode, and StatementNode.

Referenced by Optimizer::BalanceTree(), and Optimizer::ReduceValueNodes().

Here is the caller graph for this function:

GetParent()

SyntaxNode * SyntaxNode::GetParent

(

)

const

Definition at line 70 of file nodes.cpp.

References parent.

Referenced by Optimizer::BalanceTree(), Optimizer::ReduceUnaryNodes(), and Optimizer::ReduceValueNodes().

{
    return parent;
}

Here is the caller graph for this function:

GetReductionType()

ReductionType SyntaxNode::GetReductionType ( )

virtual

Reimplemented in ComplexiNode, PiNode, EulersNumberNode, NumericValueNode, SubtractionNode, AdditionNode, and UnaryNode.

Definition at line 55 of file nodes.cpp.

References nonereduc.

Referenced by Optimizer::ReduceUnaryNodes(), and Optimizer::ReduceValueNodes().

{
    return nonereduc;
}

Here is the caller graph for this function:

GetTextCode()

virtual char* SyntaxNode::GetTextCode ( )

pure virtual

Implemented in StatementBlockNode, ErrorNode, ExpressionNode, and StatementNode.

Replace()

virtual void SyntaxNode::Replace ( SyntaxNode *  n, SyntaxNode *  x  )

pure virtual

Implemented in StatementBlockNode, NumericValueNode, ErrorNode, VariableNode, NumericOperator, FactorialNode, AbsoluteNode, FunctionNode, UnaryNode, StatementNode, SilentStatement, EvalStatement, and UserFunctionNode.

Referenced by Optimizer::ReduceUnaryNodes(), and Optimizer::ReduceValueNodes().

Here is the caller graph for this function:

ResetIterator()

void SyntaxNode::ResetIterator ( )

virtual

Definition at line 80 of file nodes.cpp.

References iterator.

Referenced by Optimizer::BalanceTree(), Optimizer::GetTreeDepth(), Optimizer::ReduceUnaryNodes(), Optimizer::ReduceValueNodes(), Optimizer::TagChildren(), and Optimizer::TagStartNode().

{
    iterator = nullptr;
}

Here is the caller graph for this function:

SetFirstNode()

void SyntaxNode::SetFirstNode

(

)

Definition at line 65 of file nodes.cpp.

References leftBottom.

Referenced by Optimizer::TagStartNode().

{
    leftBottom = true;
}

Here is the caller graph for this function:

SetParent()

void SyntaxNode::SetParent

(

SyntaxNode *

node

)

Definition at line 75 of file nodes.cpp.

References parent.

Referenced by EvalStatement::Attach(), SilentStatement::Attach(), UnaryNode::Attach(), FunctionNode::Attach(), AbsoluteNode::Attach(), FactorialNode::Attach(), NumericOperator::Attach(), and Optimizer::TagChildren().

{
    parent = node;
}

Here is the caller graph for this function:

Member Data Documentation

iterator

SyntaxNode* SyntaxNode::iterator

protected

Definition at line 87 of file nodes.h.

Referenced by UserFunctionNode::GetNext(), EvalStatement::GetNext(), SilentStatement::GetNext(), UnaryNode::GetNext(), FunctionNode::GetNext(), AbsoluteNode::GetNext(), FactorialNode::GetNext(), NumericOperator::GetNext(), NumericOperator::Replace(), ResetIterator(), StatementBlockNode::StatementBlockNode(), and SyntaxNode().

leftBottom

bool SyntaxNode::leftBottom

protected

Definition at line 88 of file nodes.h.

Referenced by GetFirstNode(), NumericValueNode::GetPrecedence(), SetFirstNode(), and SyntaxNode().

output

CharBuffer* SyntaxNode::output

protected

Definition at line 85 of file nodes.h.

Referenced by ExecuteStatement::Execute(), ShowStatement::Execute(), ListStatement::Execute(), PlotStatement::Execute(), MemoryStatement::Execute(), FunctionDefinitionNode::Execute(), InputStatement::Execute(), OutputStatement::Execute(), EvalStatement::Execute(), DigitsStatement::Execute(), DeleteStatement::Execute(), HelpStatement::Execute(), ErrorNode::Execute(), StatementBlockNode::Execute(), FunctionDefinitionNode::FunctionDefinitionNode(), NumericValueNode::GetNodeText(), FunctionDefinitionNode::GetText(), UnaryNode::GetText(), FunctionNode::GetText(), AbsoluteNode::GetText(), FactorialNode::GetText(), NumericOperator::GetText(), HelpStatement::StatementHelp(), SyntaxNode(), and ~SyntaxNode().

parent

SyntaxNode* SyntaxNode::parent

protected

Definition at line 86 of file nodes.h.

Referenced by GetParent(), SetParent(), and SyntaxNode().

---

The documentation for this class was generated from the following files:

• src/main/nodes.h
• src/main/nodes.cpp