src/functionast.cpp


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#include "functionast.h"
#include "astbranch.h"
#include "astleaf.h"
#include "runner.h"
#include "context.h"

#include <bu/sio.h>
using namespace Bu;

FunctionAst::FunctionAst( const AstBranch *pRoot, class Runner *pRunner ) :
	pRoot( pRoot ),
	pRunner( pRunner )
{
	sName = dynamic_cast<AstLeaf *>(
		*(*pRoot->getBranchBegin()).begin()
		)->getStrValue();
}

FunctionAst::~FunctionAst()
{
}

Bu::String FunctionAst::getName() const
{
	return sName;
}

Variable FunctionAst::call( Variable &input, VarList lParams )
{
	pContext->pushScope();
	
	AstBranch::NodeList::const_iterator vName = 
		(*(pRoot->getBranchBegin()+1)).begin();
	VarList::iterator vValue = lParams.begin();
	for( ; vName && vValue; vName++, vValue++ )
	{
		pContext->addVariable(
			dynamic_cast<const AstLeaf *>(*vName)->getStrValue(),
			*vValue
			);
	}
	pContext->addVariable("INPUT", input );
	Variable vRet = pRunner->run( (*(pRoot->getBranchBegin()+2)).begin() );
	pContext->popScope();
	return vRet;
}