Interpreter

Interpreter developed for a hypothetical functional language using Haskell for the subject of Programming Languages of UFFS.

The subject aims primarily towards how a programming language is implemented

To test it:

cat code.mylang | runghc Main.hs

# The result should be:

[
  Num 9,
  Num 25,
  List [Num 2,Num 3],
  Num 12,
  List [Num 7,Num 8,Num 9],
  List [Num 1,Num 10,Num 3],
  Num 26,
  Num (-26),
  List [Num 10,Num 3,Num 10,Num 3],
  List [Num 2,Num 4,Num 6,Num 8,Num 10],
  Num 45,
  List [Num 10,Num 3,Num 10,Num 3],
  List [BTrue,BFalse,BTrue,BFalse,BTrue],
  List [BFalse,BTrue,BFalse,BTrue,BTrue],
  List [BFalse,BFalse,BFalse,BFalse,BFalse],
  List [Num 0,Num 1,Num 2,Num 3,Num 4,Num 5,Num 6,Num 7,Num 8,Num 9,Num 10],
  List [Num 0,Num 2,Num 8,Num 18,Num 32,Num 50,Num 72,Num 98,Num 128,Num 162,Num 200],
  List [Num 10,Num 11,Num 12,Num 13,Num 14,Num 15,Num 16,Num 17,Num 18,Num 19,Num 20],
  List [Num 5,Num 6,Num 7,Num 8,Num 9,Num 10]
]

Or you can run each statement separately with the exemples:

cat exemples/exemple1.mylang | runghc Main.hs
cat exemples/exemple2.mylang | runghc Main.hs
cat exemples/exemple3.mylang | runghc Main.hs
cat exemples/exemple4.mylang | runghc Main.hs
cat exemples/exemple5.mylang | runghc Main.hs
cat exemples/exemple6.mylang | runghc Main.hs
cat exemples/exemple7.mylang | runghc Main.hs
cat exemples/exemple8.mylang | runghc Main.hs
cat exemples/exemple9.mylang | runghc Main.hs
cat exemples/exemple10.mylang | runghc Main.hs
cat exemples/exemple11.mylang | runghc Main.hs
cat exemples/exemple12.mylang | runghc Main.hs
cat exemples/exemple13.mylang | runghc Main.hs
cat exemples/exemple14.mylang | runghc Main.hs
cat exemples/exemple15.mylang | runghc Main.hs
cat exemples/exemple16.mylang | runghc Main.hs
cat exemples/exemple17.mylang | runghc Main.hs
cat exemples/exemple18.mylang | runghc Main.hs
cat exemples/exemple19.mylang | runghc Main.hs

Notices:

• You can run multiple statements by separating each with ";"
• You can comment lines by adding "#" at the start of it
• Comments MUST have ";" at the end of the line

Important

• Since we can run multiple statemes, the result will be a list of evaluated expressions. Don't mistake this haskell list with the list implemented in the interpreter. The later has a "List" prefix:

  • Num evaluated in exemple 1: [Num 9]
  • List[Num] evaluated in exemple 5: [List [Num 7,Num 8,Num 9]]