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mark core as nostd

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* implement custom hashmap to back symtable
* pass in print and read callbacks to keep stdlib pure
* use core / alloc versions of Box, Rc, Vec, etc
* replace pow func with libm

Signed-off-by: Ava Affine <ava@sunnypup.io>
This commit is contained in:
Ava Apples Affine 2024-07-26 22:16:21 -07:00
parent 0c2aad2cb6
commit d6a0e68460
26 changed files with 493 additions and 288 deletions
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22
core/src/stl/math.rs
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@ -18,7 +18,12 @@
use crate::segment::{Ctr, Seg};
use crate::sym::{SymTable, ValueType, Symbol, Args};
use crate::error::{Traceback, start_trace};
use std::rc::Rc;
use libm::pow;
use alloc::rc::Rc;
use alloc::boxed::Box;
use alloc::string::{String, ToString};
fn isnumeric(arg: &Ctr) -> bool {
matches!(arg, Ctr::Integer(_) | Ctr::Float(_))
@ -189,12 +194,7 @@ fn floatcast_callback(ast: &Seg, _: &mut SymTable) -> Result<Ctr, Traceback> {
const EXP_DOCSTRING: &str = "Takes two args, both expected to be numeric.
Returns the first arg to the power of the second arg.
Does not handle overflow or underflow.
PANIC CASES:
- arg1 is a float and arg2 is greater than an int32
- an integer exceeding the size of a float64 is raised to a float power
- an integer is rased to the power of another integer exceeding the max size of an unsigned 32bit integer";
Does not handle overflow or underflow.";
fn exp_callback(ast: &Seg, _: &mut SymTable) -> Result<Ctr, Traceback> {
let first = *ast.car.clone();
if !isnumeric(&first) {
@ -218,15 +218,15 @@ fn exp_callback(ast: &Seg, _: &mut SymTable) -> Result<Ctr, Traceback> {
match first {
Ctr::Float(lf) => match second {
Ctr::Float(rf) => Ok(Ctr::Float(f64::powf(lf, rf))),
Ctr::Integer(ri) => Ok(Ctr::Float(f64::powi(lf, ri as i32))),
Ctr::Float(rf) => Ok(Ctr::Float(pow(lf, rf))),
Ctr::Integer(ri) => Ok(Ctr::Float(pow(lf as f64, ri as f64))),
_ => Err(start_trace(
("exp", "not implemented for these input types")
.into())),
},
Ctr::Integer(li) => match second {
Ctr::Float(rf) => Ok(Ctr::Float(f64::powf(li as f64, rf))),
Ctr::Integer(ri) => Ok(Ctr::Integer(li.pow(ri as u32))),
Ctr::Float(rf) => Ok(Ctr::Float(pow(li as f64, rf))),
Ctr::Integer(ri) => Ok(Ctr::Float(pow(li as f64, ri as f64))),
_ => Err(start_trace(
("exp", "not implemented for these input types")
.into())),