bytevm 0.7.1

A tiny bytecode virtual machine
Documentation 
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use bytevm::prelude::*;

#[test]
fn test_add_and_compare() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(1)
                .push_integer(2)
                .add()
                .push_integer(3)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));

}

#[test]
fn test_add_and_compare_false() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(1)
                .push_integer(2)
                .add()
                .push_integer(4)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(false));
}

#[test]
fn test_sub_and_compare() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(5)
                .push_integer(2)
                .sub()
                .push_integer(3)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_mul_and_compare() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(2)
                .push_integer(3)
                .mul()
                .push_integer(6)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_div_and_compare() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(6)
                .push_integer(3)
                .div()
                .push_integer(2)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_mod_and_compare() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(7)
                .push_integer(3)
                .modulus()
                .push_integer(1)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_pow_and_compare() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(2)
                .push_integer(3)
                .pow()
                .push_integer(8)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_negate() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(2)
                .negate()
                .push_integer(-2)
                .equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_less_than() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(1)
                .push_integer(2)
                .less_than()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_less_than_or_equal() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(1)
                .push_integer(1)
                .less_than_or_equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_greater_than() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(2)
                .push_integer(1)
                .greater_than()
                .return_value()
        )
        .build()
    );
    
    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_greater_than_or_equal() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(1)
                .push_integer(1)
                .greater_than_or_equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}

#[test]
fn test_not_equal() {
    let mut program = Program::builder();
    program.add_function(FunctionBuilder::default()
        .name("main")
        .arity(1)
        .body(
            BlockEncoder::default()
                .push_integer(1)
                .push_integer(2)
                .not_equal()
                .return_value()
        )
        .build()
    );

    let mut vm = Vm::default();
    vm.load_program(program.build());
    let result = vm.run(None, None).unwrap().result.unwrap();

    assert_eq!(result, Variant::Boolean(true));
}