Wed
30
Dec 2009

RegScript is my scripting language I've started coding yesterday. I'm not a guru in formal languages theory, but I'm quite fascinated with programming languages, parsers and interpreters. I don't know why but I felt I'd love to write my own programming language so I just started coding it, even if it doesn't make any sense. Maybe that's just because it's like being the creator of something that we, as developers, are usually only users. The language syntax is similar to C++. Here are features I've coded untill now:

• Variable types: bool, int, float, char, string, auto (automatic type inference)
• Values like: -10, 0xFFFF, 0b1010, 1e-6f, false, true, 'A', "foo"
• Operators: + - * / % < ?: ! && || ~ & | ^ << >> = += -= *= /= %= &= |= ^= <<= >>= ++ -- == != < > <= >= ( ) sizeof ,
• Instructions: if-else, while, do-while, for
• Intrinsic functions: sin, print, intrinsic constants: PI.

The implementation is not optimal yet as I don't generate any bytecode. I just execute statements and evaluate expressions from a tree made of polymorphic nodes dynamically allocated by parser. Sample program:

print("Hello World!\n");
for (auto i = 0; i < 10; i++)
  print("i = " + i + '\n');

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