1. Bhagyashree Bohra Deepti Jindal Shringika Porwal
PFORD
Bhagyashree Bohra
Deepti Jindal
Shringika Porwal

2. Outline Introduction Overview Examples Implementation details
Lessons learned

3. PFORD
A programming language for making programming easier and translates complex languages
Some Generation:
C++
Java

4. Goals Portability - interpreted and executed by a java interpreter.
Ease of use - very simple and quick to start

5. What can the language do?
Basic operations –
addition, multiplication, power, modulus…
Advanced operations – complex string operations , array operations
Translation

6. Operations and Relations
Arithmetic Operations
*, /, %, /’, ‘, +, -, mod, ^
Logical Operations
not and or
Relational Operations
>, >=, <, <=, ==, !=

7. Statements Block Statement {} iteration loop n runs{};
loopfrom i to f interval k{};
while(exp) loopthrough{};
Assignments =
Conditional Statements
if (exp) then {};
if (exp) then {} elsedo {};
Break and Continue
break_loop;
skip_iteration;

8. Functions and Function call
Self Defined Functions
func <id> (para-list){}
Function Call
id(param-list);

9. Internal functions (include string)
Join
Join(a,b) joins strings a and b.
To Lower
toLower(m) makes all the characters in a string lower case
To Upper
toUpper( m) makes all the characters in a string upper case
Mean
mean() computes the mean of an array
Stddev
stddev() computes the stddev of an array
Sum
sum() sums all the elements of an array
PrintArray
print() prints all the elements of an array
Sort
sort() sorts all the elements of an array

10. Example 1: 8 11 startprogram w = 3; x = 10; func incw() { w=w+1;
return w; };
func incx()
x=x+1;
return x ; } ;
func myfoo(y, z)
output y+y;
x = 1;
output z;
myfoo(incw(), incx()); 8 11

11. What does translation entail
Multiple Walkers. (total 3 right now)
One for stand alone
On each for each language
C++
Java

12. Code Statistics Parts Front-end Back-End (translation) test code
(lines)
2410
4590
540
Total
7650 lines
(partial, currently in CVS)

13. Lessons Learned
Fully investigate the feasibility of the supporting tools
Ie. translation
Get advice from experienced people
When an easier method of implementing classes of function exists, use it
power
When in doubt see Mx

14. Future Additional functionality Translation to more languages
ie perl, C#