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Implement built-in operators with macros.

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This commit is contained in:
Stephen Chung 2021-03-03 21:46:48 +08:00
parent 41c39a2060
commit dfc1ea692f
2 changed files with 441 additions and 944 deletions
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1206
src/fn_builtin.rs
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123
tests/binary_ops.rs
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@ -4,19 +4,134 @@ use rhai::{Engine, EvalAltResult, INT};
fn test_binary_ops() -> Result<(), Box<EvalAltResult>> { fn test_binary_ops() -> Result<(), Box<EvalAltResult>> {
let engine = Engine::new(); let engine = Engine::new();
assert_eq!(engine.eval::<INT>("10 + 4")?, 14);
assert_eq!(engine.eval::<INT>("10 - 4")?, 6);
assert_eq!(engine.eval::<INT>("10 * 4")?, 40);
assert_eq!(engine.eval::<INT>("10 / 4")?, 2);
assert_eq!(engine.eval::<INT>("10 % 4")?, 2); assert_eq!(engine.eval::<INT>("10 % 4")?, 2);
assert_eq!(engine.eval::<INT>("10 ** 4")?, 10000);
assert_eq!(engine.eval::<INT>("10 << 4")?, 160); assert_eq!(engine.eval::<INT>("10 << 4")?, 160);
assert_eq!(engine.eval::<INT>("10 >> 4")?, 0); assert_eq!(engine.eval::<INT>("10 >> 4")?, 0);
assert_eq!(engine.eval::<INT>("10 & 4")?, 0); assert_eq!(engine.eval::<INT>("10 & 4")?, 0);
assert_eq!(engine.eval::<INT>("10 | 4")?, 14); assert_eq!(engine.eval::<INT>("10 | 4")?, 14);
assert_eq!(engine.eval::<INT>("10 ^ 4")?, 14); assert_eq!(engine.eval::<INT>("10 ^ 4")?, 14);
assert_eq!(engine.eval::<bool>("42 == 42")?, true); assert!(engine.eval::<bool>("42 == 42")?);
assert_eq!(engine.eval::<bool>("42 > 42")?, false); assert!(!engine.eval::<bool>("42 != 42")?);
assert!(!engine.eval::<bool>("42 > 42")?);
assert!(engine.eval::<bool>("42 >= 42")?);
assert!(!engine.eval::<bool>("42 < 42")?);
assert!(engine.eval::<bool>("42 <= 42")?);
assert_eq!(engine.eval::<INT>("let x = 10; x += 4; x")?, 14);
assert_eq!(engine.eval::<INT>("let x = 10; x -= 4; x")?, 6);
assert_eq!(engine.eval::<INT>("let x = 10; x *= 4; x")?, 40);
assert_eq!(engine.eval::<INT>("let x = 10; x /= 4; x")?, 2);
assert_eq!(engine.eval::<INT>("let x = 10; x %= 4; x")?, 2);
assert_eq!(engine.eval::<INT>("let x = 10; x **= 4; x")?, 10000);
assert_eq!(engine.eval::<INT>("let x = 10; x <<= 4; x")?, 160);
assert_eq!(engine.eval::<INT>("let x = 10; x >>= 4; x")?, 0);
assert_eq!(engine.eval::<INT>("let x = 10; x &= 4; x")?, 0);
assert_eq!(engine.eval::<INT>("let x = 10; x |= 4; x")?, 14);
assert_eq!(engine.eval::<INT>("let x = 10; x ^= 4; x")?, 14);
#[cfg(not(feature = "no_float"))]
{
use rhai::FLOAT;
assert_eq!(engine.eval::<FLOAT>("10.0 + 4.0")?, 14.0);
assert_eq!(engine.eval::<FLOAT>("10.0 - 4.0")?, 6.0);
assert_eq!(engine.eval::<FLOAT>("10.0 * 4.0")?, 40.0);
assert_eq!(engine.eval::<FLOAT>("10.0 / 4.0")?, 2.5);
assert_eq!(engine.eval::<FLOAT>("10.0 % 4.0")?, 2.0);
assert_eq!(engine.eval::<FLOAT>("10.0 ** 4.0")?, 10000.0);
assert_eq!(engine.eval::<FLOAT>("10.0 + 4")?, 14.0);
assert_eq!(engine.eval::<FLOAT>("10.0 - 4")?, 6.0);
assert_eq!(engine.eval::<FLOAT>("10.0 * 4")?, 40.0);
assert_eq!(engine.eval::<FLOAT>("10.0 / 4")?, 2.5);
assert_eq!(engine.eval::<FLOAT>("10.0 % 4")?, 2.0);
assert_eq!(engine.eval::<FLOAT>("10.0 ** 4")?, 10000.0);
assert_eq!(engine.eval::<FLOAT>("10 + 4.0")?, 14.0);
assert_eq!(engine.eval::<FLOAT>("10 - 4.0")?, 6.0);
assert_eq!(engine.eval::<FLOAT>("10 * 4.0")?, 40.0);
assert_eq!(engine.eval::<FLOAT>("10 / 4.0")?, 2.5);
assert_eq!(engine.eval::<FLOAT>("10 % 4.0")?, 2.0);
assert_eq!(engine.eval::<FLOAT>("10 ** 4.0")?, 10000.0);
assert!(engine.eval::<bool>("42 == 42.0")?);
assert!(!engine.eval::<bool>("42 != 42.0")?);
assert!(!engine.eval::<bool>("42 > 42.0")?);
assert!(engine.eval::<bool>("42 >= 42.0")?);
assert!(!engine.eval::<bool>("42 < 42.0")?);
assert!(engine.eval::<bool>("42 <= 42.0")?);
assert!(engine.eval::<bool>("42.0 == 42")?);
assert!(!engine.eval::<bool>("42.0 != 42")?);
assert!(!engine.eval::<bool>("42.0 > 42")?);
assert!(engine.eval::<bool>("42.0 >= 42")?);
assert!(!engine.eval::<bool>("42.0 < 42")?);
assert!(engine.eval::<bool>("42.0 <= 42")?);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x += 4.0; x")?, 14.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x -= 4.0; x")?, 6.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x *= 4.0; x")?, 40.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x /= 4.0; x")?, 2.5);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x %= 4.0; x")?, 2.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x **= 4.0; x")?, 10000.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x += 4; x")?, 14.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x -= 4; x")?, 6.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x *= 4; x")?, 40.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x /= 4; x")?, 2.5);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x %= 4; x")?, 2.0);
assert_eq!(engine.eval::<FLOAT>("let x = 10.0; x **= 4; x")?, 10000.0);
}
assert_eq!(
engine.eval::<String>(r#""hello" + ", world""#)?,
"hello, world"
);
assert_eq!(engine.eval::<String>(r#""hello" + '!'"#)?, "hello!");
assert_eq!(engine.eval::<String>(r#""hello" - "el""#)?, "hlo");
assert_eq!(engine.eval::<String>(r#""hello" - 'l'"#)?, "heo");
assert!(!engine.eval::<bool>(r#""a" == "x""#)?);
assert!(engine.eval::<bool>(r#""a" != "x""#)?);
assert!(!engine.eval::<bool>(r#""a" > "x""#)?);
assert!(!engine.eval::<bool>(r#""a" >= "x""#)?);
assert!(engine.eval::<bool>(r#""a" < "x""#)?);
assert!(engine.eval::<bool>(r#""a" <= "x""#)?);
assert!(engine.eval::<bool>(r#""x" == 'x'"#)?);
assert!(!engine.eval::<bool>(r#""x" != 'x'"#)?);
assert!(!engine.eval::<bool>(r#""x" > 'x'"#)?);
assert!(engine.eval::<bool>(r#""x" >= 'x'"#)?);
assert!(!engine.eval::<bool>(r#""x" < 'x'"#)?);
assert!(engine.eval::<bool>(r#""x" <= 'x'"#)?);
assert!(engine.eval::<bool>(r#"'x' == "x""#)?);
assert!(!engine.eval::<bool>(r#"'x' != "x""#)?);
assert!(!engine.eval::<bool>(r#"'x' > "x""#)?);
assert!(engine.eval::<bool>(r#"'x' >= "x""#)?);
assert!(!engine.eval::<bool>(r#"'x' < "x""#)?);
assert!(engine.eval::<bool>(r#"'x' <= "x""#)?);
// Incompatible types compare to false // Incompatible types compare to false
assert_eq!(engine.eval::<bool>("true == 42")?, false); assert!(!engine.eval::<bool>("true == 42")?);
assert_eq!(engine.eval::<bool>(r#""42" == 42"#)?, false); assert!(engine.eval::<bool>("true != 42")?);
assert!(!engine.eval::<bool>("true > 42")?);
assert!(!engine.eval::<bool>("true >= 42")?);
assert!(!engine.eval::<bool>("true < 42")?);
assert!(!engine.eval::<bool>("true <= 42")?);
assert!(!engine.eval::<bool>(r#""42" == 42"#)?);
assert!(engine.eval::<bool>(r#""42" != 42"#)?);
assert!(!engine.eval::<bool>(r#""42" > 42"#)?);
assert!(!engine.eval::<bool>(r#""42" >= 42"#)?);
assert!(!engine.eval::<bool>(r#""42" < 42"#)?);
assert!(!engine.eval::<bool>(r#""42" <= 42"#)?);
Ok(()) Ok(())
} }