UnaryNode Class Reference

#include <operators.h>

Inheritance diagram for UnaryNode:

Collaboration diagram for UnaryNode:

Public Member Functions
	UnaryNode (ExpressionNode *expression)
	~UnaryNode ()
ReductionType	GetReductionType ()
int	GetPrecedence ()
SyntaxNode *	GetNext ()
char *	GetText ()
Number *	Evaluate ()
void	Attach (SyntaxNode *node)
void	Detach (SyntaxNode *node)
void	Replace (SyntaxNode *n, SyntaxNode *x)
Public Member Functions inherited from ExpressionNode
	ExpressionNode ()
	ExpressionNode (Number *value)
virtual	~ExpressionNode ()
NodeType	GetNodeType ()
virtual bool	IsSilent ()
char *	GetTextCode ()
char *	Execute ()
Public Member Functions inherited from SyntaxNode
	SyntaxNode ()
virtual	~SyntaxNode ()
void	SetFirstNode ()
bool	GetFirstNode () const
SyntaxNode *	GetParent () const
void	SetParent (SyntaxNode *node)
virtual void	ResetIterator ()

Protected Member Functions
char *	GetNodeText ()

Private Attributes
ExpressionNode *	expression

Additional Inherited Members
Protected Attributes inherited from ExpressionNode
Number *	result
Protected Attributes inherited from SyntaxNode
CharBuffer *	output
SyntaxNode *	parent
SyntaxNode *	iterator
bool	leftBottom

Detailed Description

Definition at line 42 of file operators.h.

Constructor & Destructor Documentation

UnaryNode()

UnaryNode::UnaryNode

(

ExpressionNode *

expression

)

Definition at line 39 of file operators.cpp.

References expression, and ExpressionNode::ExpressionNode().

Referenced by Parser::ParseUnary().

                                               :
    ExpressionNode(), expression(expression)
{
}

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~UnaryNode()

UnaryNode::~UnaryNode

(

)

Definition at line 44 of file operators.cpp.

References expression.

{
    if (expression != nullptr)
    {
        delete expression;
    }
}

Member Function Documentation

Attach()

void UnaryNode::Attach ( SyntaxNode *  node )

virtual

Implements SyntaxNode.

Definition at line 109 of file operators.cpp.

References expression, and SyntaxNode::SetParent().

{
    if (expression == nullptr)
    {
        expression = static_cast<ExpressionNode*>(node);
        node->SetParent(this);
    }
}

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Detach()

void UnaryNode::Detach ( SyntaxNode *  node )

virtual

Implements SyntaxNode.

Definition at line 118 of file operators.cpp.

References expression.

{
    if (expression == node)
    {
        expression = nullptr;
    }
}

Evaluate()

Number * UnaryNode::Evaluate ( )

virtual

Implements ExpressionNode.

Definition at line 92 of file operators.cpp.

References ExpressionNode::Evaluate(), expression, ExpressionNode::result, and Number::Unary().

{
    result = expression->Evaluate()->Unary();
    return result;
}

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GetNext()

SyntaxNode * UnaryNode::GetNext ( )

virtual

Implements SyntaxNode.

Definition at line 98 of file operators.cpp.

References expression, and SyntaxNode::iterator.

{
    if (iterator == nullptr)
    {
        iterator = expression;
        return iterator;
    }

    return nullptr;
}

GetNodeText()

char * UnaryNode::GetNodeText ( )

protectedvirtual

Implements ExpressionNode.

Definition at line 62 of file operators.cpp.

Referenced by GetText().

{
    static char* ret = (char*)"-";
    return ret;
}

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GetPrecedence()

int UnaryNode::GetPrecedence ( )

virtual

Implements ExpressionNode.

Definition at line 57 of file operators.cpp.

Referenced by GetText().

{
    return 7;
}

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GetReductionType()

ReductionType UnaryNode::GetReductionType ( )

virtual

Reimplemented from SyntaxNode.

Definition at line 52 of file operators.cpp.

References unaryreduc.

{
    return unaryreduc;
}

GetText()

char * UnaryNode::GetText ( )

virtual

Implements ExpressionNode.

Definition at line 68 of file operators.cpp.

References CharBuffer::Append(), CharBuffer::Empty(), CharBuffer::EnsureSize(), expression, GetNodeText(), GetPrecedence(), ExpressionNode::GetPrecedence(), CharBuffer::GetString(), ExpressionNode::GetText(), SyntaxNode::output, and StrLen().

{
    const char* expText = expression->GetText();
    const char* nodeText = GetNodeText();

    output->Empty();
    output->EnsureSize(StrLen(expText) + StrLen(nodeText) + 2 + 1);

    if (expression->GetPrecedence() != 0 && expression->GetPrecedence() != 5 && expression->GetPrecedence() <= GetPrecedence())
    {
        output->Append(nodeText);
        output->Append("(");
        output->Append(expText);
        output->Append(")");
    }
    else
    {
        output->Append(nodeText);
        output->Append(expText);
    }

    return output->GetString();
}

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Replace()

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

virtual

Implements SyntaxNode.

Definition at line 126 of file operators.cpp.

References expression.

{
    if (expression == n)
    {
        delete expression;
        expression = static_cast<ExpressionNode*>(x);
    }
}

Member Data Documentation

expression

ExpressionNode* UnaryNode::expression

private

Definition at line 61 of file operators.h.

Referenced by Attach(), Detach(), Evaluate(), GetNext(), GetText(), Replace(), UnaryNode(), and ~UnaryNode().

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

• src/main/operators.h
• src/main/operators.cpp