bfc/README.md

(+97>)3<3+>+5>+2<2(.>)3 (*.bfe)

A slight syntactic superset of BF.

Development requirements:

1. cxxopts -> v2.2.1
2. antlr4 -> v4

HelloWorld.bfe

-[-7>+<]>-.-[->+5<]>++.+7..+3.[-3>+<]>-5.--[->+4<]>-.-8.+3.-6.-8.

Functions

1. Interpret bfe(and bf) files
2. Convert bf/bfe to bf
3. Convert bf/bfe to C++ (not optimized)

Usage

./bfc -h #Help
./bfc prog.bfe #Execute
./bfc prog.bfe -a bf #Translate file to bf
./bfc prog.bfe -a cpp # Translate file to cpp

Syntax

Basic

,. IO
<> Address manipulation
+- Value manipulation
[] Looping construct

Comments

// - Single Line

/* */ - Multi Line

Repeats

<symbol><number>
(<symbols>)<number>

Eg.

+65. //prints A
>
(+65>)3 //stores AAA
(<.)3   //prints AAA

Setup oddities (dev)

1. Copy antlr-4.8-complete.jar to ./thirdparty/antlr. (Required only if grammar has to be updated)
2. Generate parsers to ./libs/generated or use VSCode with the ANTLR extension.

Todo (Tentative)

• Grammar
  • Number shorthand
  • Loop statements
  • Shorthand segments
• Processing
  • Translate to bf
  • Execute results