Pod Interpreter

Written in Go!

Example:

let a = 10;
let b = 12;
if a == 10 {
    print a;
}else if b == 12 {
    print a+b;
}else {
    print 0;
}

Prerequsites

• go (>=1.22.2)
• python3
• bash

Build

./run build

# Wasm
./run build wasm

Usage

Native Executable can be found in ./out

RUN_TYPE={interpreter-arg} ./run {script-args} {.pod file} 
# OR
./out/pod-interpreter {interpreter-arg} {.pod file}

Interpreter Arguments

• tokenize
• parse (parse expression)
• evaluate (evaluate expression)
• run (run program)

Script Arguments (not set by default)

• build: builds for selected target
• wasm: sets target to WASM
• test: Runs tests
• bless: (only with test) saves state of stdout & stderr for future testing

Web server starts at localhost:8080. Web interpreter files can be found in ./out

# Wasm (server at localhost:8080)
./run wasm

To-Do

• Tokenizer
• Parser
• Expression Evaluator
• Variable
• Print
• If statement
• While loop
• For loop
• Functions
• Function Arguments
• Return
• File read/write
• Stdin
• Stdlib
• Testing

References

• Crafting Interpreters

Operators

+, -, *, /, ^, %, ==, !=, >, >=, <, <=, &&, ||

Function

func, return

Initialize

let

If and loops

if, else, for, while

Data types

string, int, float, true/false

Other

;, (, ), {, }