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use std::fs::File;
use std::io::Result;
use std::io::Write;
const MINIMUM: i32 = -10;
const MAXIMUM: i32 = 10;
pub fn generate_scale_mul() -> Result<()> {
let mut file = File::create("src/quantity/scale_mul.rs")?;
file.write_all(b"use super::*;\n\n")?;
for i in MINIMUM..=MAXIMUM {
file.write_all(
format!(
"\n//------------------------- {} -------------------------\n",
i
)
.as_bytes(),
)?;
if i == 0 {
file.write_all(
r#"
impl<P1, P2, const N: i32> MulScale<Scale<P2, N>> for Scale<P1, 0>
where
P1: Prefix,
P2: Prefix,
{
type Output = Scale<P2, N>;
}
"#
.as_bytes(),
)?;
} else {
for j in MINIMUM..=MAXIMUM {
let res = i + j;
if res >= MINIMUM && res <= MAXIMUM {
if j == 0 {
file.write_all(
format!(
r#"
impl<P1, P2> MulScale<Scale<P2, 0>> for Scale<P1, {}>
where
P1: Prefix,
P2: Prefix,
{{
type Output = Scale<P1, {}>;
}}
"#,
i, res
)
.as_bytes(),
)?;
} else if res == 0 {
file.write_all(
format!(
r#"
impl<P> MulScale<Scale<P, {}>> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<One, 0>;
}}
"#,
j, i,
)
.as_bytes(),
)?;
} else {
file.write_all(
format!(
r#"
impl<P> MulScale<Scale<P, {}>> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<P, {}>;
}}
"#,
j, i, res
)
.as_bytes(),
)?;
}
}
}
}
}
Ok(())
}
pub fn generate_scale_div() -> Result<()> {
let mut file = File::create("src/quantity/scale_div.rs")?;
file.write_all(b"use super::*;\n\n")?;
for i in MINIMUM..=MAXIMUM {
file.write_all(
format!(
"\n//------------------------- {} -------------------------\n",
i
)
.as_bytes(),
)?;
for j in MINIMUM..=MAXIMUM {
let res = i - j;
if res >= MINIMUM && res <= MAXIMUM {
if i == 0 {
file.write_all(
format!(
r#"
impl<P1, P2> DivScale<Scale<P2, {}>> for Scale<P1, 0>
where
P1: Prefix,
P2: Prefix,
{{
type Output = Scale<P2, {}>;
}}
"#,
j, res
)
.as_bytes(),
)?;
} else if j == 0 {
file.write_all(
format!(
r#"
impl<P1, P2> DivScale<Scale<P2, 0>> for Scale<P1, {}>
where
P1: Prefix,
P2: Prefix,
{{
type Output = Scale<P1, {}>;
}}
"#,
i, res
)
.as_bytes(),
)?;
} else if res == 0 {
file.write_all(
format!(
r#"
impl<P> DivScale<Scale<P, {}>> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<One, 0>;
}}
"#,
j, i,
)
.as_bytes(),
)?;
} else {
file.write_all(
format!(
r#"
impl<P> DivScale<Scale<P, {}>> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<P, {}>;
}}
"#,
j, i, res
)
.as_bytes(),
)?;
}
}
}
}
Ok(())
}
pub fn generate_scale_pow() -> Result<()> {
let mut file = File::create("src/quantity/scale_pow.rs")?;
file.write_all(b"use super::*;\n\n")?;
for i in MINIMUM..=MAXIMUM {
file.write_all(
format!(
"\n//------------------------- {} -------------------------\n",
i
)
.as_bytes(),
)?;
for j in MINIMUM..=MAXIMUM {
let res = i * j;
if res >= MINIMUM && res <= MAXIMUM {
if res == 0 {
file.write_all(
format!(
r#"
impl<P> PowScale<{}> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<One, 0>;
}}
"#,
j, i,
)
.as_bytes(),
)?;
} else {
file.write_all(
format!(
r#"
impl<P> PowScale<{}> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<P, {}>;
}}
"#,
j, i, res
)
.as_bytes(),
)?;
}
}
}
}
Ok(())
}
pub fn generate_scale_root() -> Result<()> {
let mut file = File::create("src/quantity/scale_root.rs")?;
file.write_all(b"use super::*;\n\n")?;
for i in MINIMUM..=MAXIMUM {
file.write_all(
format!(
"\n//------------------------- {} -------------------------\n",
i
)
.as_bytes(),
)?;
for j in MINIMUM..=MAXIMUM {
if j != 0 && i % j == 0 {
let res = i / j;
if res >= MINIMUM && res <= MAXIMUM {
if res == 0 {
file.write_all(
format!(
r#"
impl<P> RootScale<{}> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<One, 0>;
}}
"#,
j, i,
)
.as_bytes(),
)?;
} else {
file.write_all(
format!(
r#"
impl<P> RootScale<{}> for Scale<P, {}>
where
P: Prefix,
{{
type Output = Scale<P, {}>;
}}
"#,
j,
i,
i / j
)
.as_bytes(),
)?;
}
}
}
}
}
Ok(())
}