#![allow(non_snake_case)]
use crate::plugin::*;
use crate::stdlib::{format, string::String};
use crate::{def_package, EvalAltResult, Position, INT};
#[cfg(not(feature = "no_float"))]
use crate::FLOAT;
#[cfg(feature = "no_std")]
#[cfg(not(feature = "no_float"))]
use num_traits::float::Float;
#[inline(always)]
pub fn make_err(msg: impl Into<String>) -> Box<EvalAltResult> {
EvalAltResult::ErrorArithmetic(msg.into(), Position::NONE).into()
}
macro_rules! gen_arithmetic_functions {
($root:ident => $($arg_type:ident),+) => {
pub mod $root { $(pub mod $arg_type {
use super::super::*;
#[export_module]
pub mod functions {
#[rhai_fn(name = "+", return_raw)]
pub fn add(x: $arg_type, y: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
x.checked_add(y).ok_or_else(|| make_err(format!("Addition overflow: {} + {}", x, y))).map(Dynamic::from)
} else {
Ok(Dynamic::from(x + y))
}
}
#[rhai_fn(name = "-", return_raw)]
pub fn subtract(x: $arg_type, y: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
x.checked_sub(y).ok_or_else(|| make_err(format!("Subtraction overflow: {} - {}", x, y))).map(Dynamic::from)
} else {
Ok(Dynamic::from(x - y))
}
}
#[rhai_fn(name = "*", return_raw)]
pub fn multiply(x: $arg_type, y: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
x.checked_mul(y).ok_or_else(|| make_err(format!("Multiplication overflow: {} * {}", x, y))).map(Dynamic::from)
} else {
Ok(Dynamic::from(x * y))
}
}
#[rhai_fn(name = "/", return_raw)]
pub fn divide(x: $arg_type, y: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
if y == 0 {
Err(make_err(format!("Division by zero: {} / {}", x, y)))
} else {
x.checked_div(y).ok_or_else(|| make_err(format!("Division overflow: {} / {}", x, y))).map(Dynamic::from)
}
} else {
Ok(Dynamic::from(x / y))
}
}
#[rhai_fn(name = "%", return_raw)]
pub fn modulo(x: $arg_type, y: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
x.checked_rem(y).ok_or_else(|| make_err(format!("Modulo division by zero or overflow: {} % {}", x, y))).map(Dynamic::from)
} else {
Ok(Dynamic::from(x % y))
}
}
#[rhai_fn(name = "~", return_raw)]
pub fn power(x: INT, y: INT) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
if cfg!(not(feature = "only_i32")) && y > (u32::MAX as INT) {
Err(make_err(format!("Integer raised to too large an index: {} ~ {}", x, y)))
} else if y < 0 {
Err(make_err(format!("Integer raised to a negative index: {} ~ {}", x, y)))
} else {
x.checked_pow(y as u32).ok_or_else(|| make_err(format!("Power overflow: {} ~ {}", x, y))).map(Dynamic::from)
}
} else {
Ok(Dynamic::from(x.pow(y as u32)))
}
}
#[rhai_fn(name = "<<", return_raw)]
pub fn shift_left(x: $arg_type, y: INT) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
if cfg!(not(feature = "only_i32")) && y > (u32::MAX as INT) {
Err(make_err(format!("Left-shift by too many bits: {} << {}", x, y)))
} else if y < 0 {
Err(make_err(format!("Left-shift by a negative number: {} << {}", x, y)))
} else {
x.checked_shl(y as u32).ok_or_else(|| make_err(format!("Left-shift by too many bits: {} << {}", x, y))).map(Dynamic::from)
}
} else {
Ok(Dynamic::from(x << y))
}
}
#[rhai_fn(name = ">>", return_raw)]
pub fn shift_right(x: $arg_type, y: INT) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
if cfg!(not(feature = "only_i32")) && y > (u32::MAX as INT) {
Err(make_err(format!("Right-shift by too many bits: {} >> {}", x, y)))
} else if y < 0 {
Err(make_err(format!("Right-shift by a negative number: {} >> {}", x, y)))
} else {
x.checked_shr(y as u32).ok_or_else(|| make_err(format!("Right-shift by too many bits: {} >> {}", x, y))).map(Dynamic::from)
}
} else {
Ok(Dynamic::from(x >> y))
}
}
#[rhai_fn(name = "&")]
pub fn binary_and(x: $arg_type, y: $arg_type) -> $arg_type {
x & y
}
#[rhai_fn(name = "|")]
pub fn binary_or(x: $arg_type, y: $arg_type) -> $arg_type {
x | y
}
#[rhai_fn(name = "^")]
pub fn binary_xor(x: $arg_type, y: $arg_type) -> $arg_type {
x ^ y
}
}
})* }
}
}
macro_rules! gen_signed_functions {
($root:ident => $($arg_type:ident),+) => {
pub mod $root { $(pub mod $arg_type {
use super::super::*;
#[export_module]
pub mod functions {
#[rhai_fn(name = "-", return_raw)]
pub fn neg(x: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
x.checked_neg().ok_or_else(|| make_err(format!("Negation overflow: -{}", x))).map(Dynamic::from)
} else {
Ok(Dynamic::from(-x))
}
}
#[rhai_fn(name = "+")]
pub fn plus(x: $arg_type) -> $arg_type {
x
}
#[rhai_fn(return_raw)]
pub fn abs(x: $arg_type) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) {
x.checked_abs().ok_or_else(|| make_err(format!("Negation overflow: -{}", x))).map(Dynamic::from)
} else {
Ok(Dynamic::from(x.abs()))
}
}
pub fn sign(x: $arg_type) -> INT {
if x == 0 {
0
} else if x < 0 {
-1
} else {
1
}
}
}
})* }
}
}
macro_rules! reg_functions {
($mod_name:ident += $root:ident ; $($arg_type:ident),+ ) => { $(
combine_with_exported_module!($mod_name, "arithmetic", $root::$arg_type::functions);
)* }
}
def_package!(crate:ArithmeticPackage:"Basic arithmetic", lib, {
reg_functions!(lib += signed_basic; INT);
#[cfg(not(feature = "only_i32"))]
#[cfg(not(feature = "only_i64"))]
{
reg_functions!(lib += arith_numbers; i8, u8, i16, u16, i32, u32, u64);
reg_functions!(lib += signed_numbers; i8, i16, i32);
#[cfg(not(target_arch = "wasm32"))]
{
reg_functions!(lib += arith_num_128; i128, u128);
reg_functions!(lib += signed_num_128; i128);
}
}
#[cfg(not(feature = "no_float"))]
{
combine_with_exported_module!(lib, "f32", f32_functions);
combine_with_exported_module!(lib, "f64", f64_functions);
}
});
gen_arithmetic_functions!(arith_basic => INT);
#[cfg(not(feature = "only_i32"))]
#[cfg(not(feature = "only_i64"))]
gen_arithmetic_functions!(arith_numbers => i8, u8, i16, u16, i32, u32, u64);
#[cfg(not(feature = "only_i32"))]
#[cfg(not(feature = "only_i64"))]
#[cfg(not(target_arch = "wasm32"))]
gen_arithmetic_functions!(arith_num_128 => i128, u128);
gen_signed_functions!(signed_basic => INT);
#[cfg(not(feature = "only_i32"))]
#[cfg(not(feature = "only_i64"))]
gen_signed_functions!(signed_numbers => i8, i16, i32);
#[cfg(not(feature = "only_i32"))]
#[cfg(not(feature = "only_i64"))]
#[cfg(not(target_arch = "wasm32"))]
gen_signed_functions!(signed_num_128 => i128);
#[cfg(not(feature = "no_float"))]
#[export_module]
mod f32_functions {
#[cfg(not(feature = "f32_float"))]
pub mod basic_arithmetic {
#[rhai_fn(name = "+")]
pub fn add(x: f32, y: f32) -> f32 {
x + y
}
#[rhai_fn(name = "-")]
pub fn subtract(x: f32, y: f32) -> f32 {
x - y
}
#[rhai_fn(name = "*")]
pub fn multiply(x: f32, y: f32) -> f32 {
x * y
}
#[rhai_fn(name = "/")]
pub fn divide(x: f32, y: f32) -> f32 {
x / y
}
#[rhai_fn(name = "%")]
pub fn modulo(x: f32, y: f32) -> f32 {
x % y
}
#[rhai_fn(name = "~", return_raw)]
pub fn pow_f_f(x: f32, y: f32) -> Result<Dynamic, Box<EvalAltResult>> {
Ok(Dynamic::from(x.powf(y)))
}
}
#[rhai_fn(name = "-")]
pub fn neg(x: f32) -> f32 {
-x
}
#[rhai_fn(name = "+")]
pub fn plus(x: f32) -> f32 {
-x
}
pub fn abs(x: f32) -> f32 {
x.abs()
}
pub fn sign(x: f32) -> INT {
if x == 0.0 {
0
} else if x < 0.0 {
-1
} else {
1
}
}
#[rhai_fn(name = "~", return_raw)]
pub fn pow_f_i(x: f32, y: INT) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) && y > (i32::MAX as INT) {
Err(make_err(format!(
"Number raised to too large an index: {} ~ {}",
x, y
)))
} else {
Ok(Dynamic::from(x.powi(y as i32)))
}
}
}
#[cfg(not(feature = "no_float"))]
#[export_module]
mod f64_functions {
#[cfg(feature = "f32_float")]
pub mod basic_arithmetic {
#[rhai_fn(name = "+")]
pub fn add(x: f64, y: f64) -> f64 {
x + y
}
#[rhai_fn(name = "-")]
pub fn subtract(x: f64, y: f64) -> f64 {
x - y
}
#[rhai_fn(name = "*")]
pub fn multiply(x: f64, y: f64) -> f64 {
x * y
}
#[rhai_fn(name = "/")]
pub fn divide(x: f64, y: f64) -> f64 {
x / y
}
#[rhai_fn(name = "%")]
pub fn modulo(x: f64, y: f64) -> f64 {
x % y
}
#[rhai_fn(name = "~", return_raw)]
pub fn pow_f_f(x: f64, y: f64) -> Result<Dynamic, Box<EvalAltResult>> {
Ok(Dynamic::from(x.powf(y)))
}
}
#[rhai_fn(name = "-")]
pub fn neg(x: f64) -> f64 {
-x
}
#[rhai_fn(name = "+")]
pub fn plus(x: f64) -> f64 {
-x
}
pub fn abs(x: f64) -> f64 {
x.abs()
}
pub fn sign(x: f64) -> INT {
if x == 0.0 {
0
} else if x < 0.0 {
-1
} else {
1
}
}
#[rhai_fn(name = "~", return_raw)]
pub fn pow_f_i(x: FLOAT, y: INT) -> Result<Dynamic, Box<EvalAltResult>> {
if cfg!(not(feature = "unchecked")) && y > (i32::MAX as INT) {
Err(make_err(format!(
"Number raised to too large an index: {} ~ {}",
x, y
)))
} else {
Ok(x.powi(y as i32).into())
}
}
}