lenzpaul / qapla

A programming language written in C.

Qapla'

A first stab at creating a programming language interpreter, using lexical analyzer LEX, YACC parser and C.

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Program description:

This is an interactive interpreter for the fooish language.

Check out a quick demo here

INSTALLATION

• run makefile, located in src/
• execute program by running ./src/fooChecker
• the grammar is detailed in src/y.output (auto generated)
• To exit the interpreter, type: exit

[optional] I've added the following files for different levels of debugging and informative messages.

• fooCheckerd
• fooChecker_debug
• fooChecker_debug_full

FEATURES

• Working features

  • comments
  • assignment statements
  • variables
  • I/O : typechecked. reads, readi, readr, print
  • string expressions
    • including syntax, literals, escape sequences for " and , comparison operators, concatenation
  • arithmetic expressions : + - * / , correct precedence and associativity, typechecking
  • boolean expressions
    • syntax, literals T and F, the comparison operators, compound operators (AND OR NOT), typechecking
  • selection
    • syntax, the use of if, else-if, else, the boolean test expressions, local block scope
  • function handling
    • syntax, function definitions and calls, local variables/scope, proper handling of parameters and return values

• Non working features [ To be developed ]

  • string expressions
    • substring operators
  • arithmetic expressions
    • MOD, and ^
  • iteration
    • while loops are not implemented