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More builtins

This commit is contained in:
Greg Shuflin 2021-10-24 07:07:12 -07:00
parent c9cfc467b0
commit f2c9cf20cb
2 changed files with 57 additions and 0 deletions
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6
schala-lang/language/src/reduced_ir/mod.rs
View File

@ -269,6 +269,12 @@ pub enum Expression {
ReductionError(String),
}
impl Expression {
pub fn unit() -> Self {
Expression::Tuple(vec![])
}
}
#[derive(Debug)]
pub struct FunctionDefinition {
pub body: Vec<Statement>

51
schala-lang/language/src/tree_walk_eval/mod.rs
View File

@ -241,8 +241,59 @@ impl<'a> State<'a> {
} else {
Nat(l / r).into()
},
(Modulo, Lit(Nat(l)), Lit(Nat(r))) => Nat(l % r).into(),
(Exponentiation, Lit(Nat(l)), Lit(Nat(r))) => Nat(l ^ r).into(),
(BitwiseAnd, Lit(Nat(l)), Lit(Nat(r))) => Nat(l & r).into(),
(BitwiseOr, Lit(Nat(l)), Lit(Nat(r))) => Nat(l | r).into(),
/* comparisons */
(Equality, Lit(Nat(l)), Lit(Nat(r))) => Bool(l == r).into(),
(Equality, Lit(Int(l)), Lit(Int(r))) => Bool(l == r).into(),
(Equality, Lit(Float(l)), Lit(Float(r))) => Bool(l == r).into(),
(Equality, Lit(Bool(l)), Lit(Bool(r))) => Bool(l == r).into(),
(Equality, Lit(StringLit(ref l)), Lit(StringLit(ref r))) => Bool(l == r).into(),
(LessThan, Lit(Nat(l)), Lit(Nat(r))) => Bool(l < r).into(),
(LessThan, Lit(Int(l)), Lit(Int(r))) => Bool(l < r).into(),
(LessThan, Lit(Float(l)), Lit(Float(r))) => Bool(l < r).into(),
(LessThanOrEqual, Lit(Nat(l)), Lit(Nat(r))) => Bool(l <= r).into(),
(LessThanOrEqual, Lit(Int(l)), Lit(Int(r))) => Bool(l <= r).into(),
(LessThanOrEqual, Lit(Float(l)), Lit(Float(r))) => Bool(l <= r).into(),
(GreaterThan, Lit(Nat(l)), Lit(Nat(r))) => Bool(l > r).into(),
(GreaterThan, Lit(Int(l)), Lit(Int(r))) => Bool(l > r).into(),
(GreaterThan, Lit(Float(l)), Lit(Float(r))) => Bool(l > r).into(),
(GreaterThanOrEqual, Lit(Nat(l)), Lit(Nat(r))) => Bool(l >= r).into(),
(GreaterThanOrEqual, Lit(Int(l)), Lit(Int(r))) => Bool(l >= r).into(),
(GreaterThanOrEqual, Lit(Float(l)), Lit(Float(r))) => Bool(l >= r).into(),
(binop, lhs, rhs) => return Err(format!("Invalid binop expression {:?} {:?} {:?}", lhs, binop, rhs)),
},
(prefix, &[ref arg]) => match (prefix, arg) {
(BooleanNot, Lit(Bool(true))) => Bool(false),
(BooleanNot, Lit(Bool(false))) => Bool(true),
(Negate, Lit(Nat(n))) => Int(-(*n as i64)),
(Negate, Lit(Int(n))) => Int(-(*n as i64)),
(Increment, Lit(Int(n))) => Int(*n),
(Increment, Lit(Nat(n))) => Nat(*n),
_ => return Err("No valid prefix op".to_string())
}.into(),
/* builtin functions */
(IOPrint, &[ref anything]) => {
print!("{}", expr_to_repl(anything));
Primitive::Tuple(vec![])
},
(IOPrintLn, &[ref anything]) => {
println!("{}", expr_to_repl(anything));
Primitive::Tuple(vec![])
},
(IOGetLine, &[]) => {
let mut buf = String::new();
std::io::stdin().read_line(&mut buf).expect("Error readling line in 'getline'");
StringLit(Rc::new(buf.trim().to_string())).into()
},
(x, args) => return Err(format!("bad or unimplemented builtin {:?} | {:?}", x, args)),
})
}