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Building a Programming Language: Part II (Adding Conditions, Loop and Blocks to BrainLess)

, 11 Oct 2013
In this article, we will discuss implementing conditional statements, loops and blocks.
#include <cstdio>
#include <time.h>
using namespace std;

#include "TimeLogger.h"
const double CTimer::_frequency = getFrequency();
LARGE_INTEGER CTimer::_start = {0};
LARGE_INTEGER CTimer::_end = {0};
double CTimer::_timeElapsedInSec = {0};
LARGE_INTEGER TimeLogger::_start;
LARGE_INTEGER TimeLogger::_end;

ofstream TimeLogger::_file;

void TimeLogger::init(const string& fileName)
{
	_file.open(fileName.c_str());
	if(!_file.is_open() || !_file.good())
		cerr<<"Cannot open file"<<endl;
}

void TimeLogger::functionStart(const std::string& funName)
{
	time_t rawtime;
	string timeS;
	getTime(timeS);

	ST(_start);
	char str[1024] = {0};
	sprintf(str, "%s:%I64d %s Start{",  timeS.c_str(), _start.QuadPart, funName.c_str());
	_file<<str<<endl;
}

void TimeLogger::functionEnd(const std::string& funName)
{
	string timeS;
	getTime(timeS);
	ET(_end);
	float diff = DIFF(_start, _end);
	char str[1024] = {0};
	sprintf(str, "%s:%I64d %s End}",  timeS.c_str(), _end.QuadPart, funName.c_str());
	_file<<str<<endl;
	sprintf(str, "============%s execution time = %f seconds============%",  funName.c_str(), diff);
	_file<<str<<endl;
}


void TimeLogger::getTime(string& timeS)
{
	time_t rawtime;
	struct tm * timeinfo;

	time ( &rawtime );
	timeinfo = localtime ( &rawtime );
	timeS = asctime (timeinfo);
	timeS[timeS.length()-2] = '\0';
}

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License

This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)

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About the Author

BrainlessLabs.com
Engineer
India India
I like to explore different aspects of technology. Try new things, and get delighted. My interests are programming language, and Imaging. But its not hard to work on other things also. Algorithms delight me over a coffee break.
 
I basically code in C++, but JAVA is not so alien for me. I know few scripting languages also. Basically I feel that knowing a programing language is just a matter of getting introduced to it.
 
For my other articles check my blog on homepage:
 
http://brainlesslabs.com/
 
https://github.com/BrainlessLabs
 
http://www.luxrender.net/en_GB/authors_contributors - SMISRA
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