435 lines
11 KiB
Rust
435 lines
11 KiB
Rust
#![cfg(not(feature = "no_module"))]
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use rhai::{
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module_resolvers::StaticModuleResolver, Dynamic, Engine, EvalAltResult, ImmutableString,
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Module, ParseError, ParseErrorType, Scope, INT,
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};
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#[test]
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fn test_module() {
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let mut module = Module::new();
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module.set_var("answer", 42 as INT);
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assert!(module.contains_var("answer"));
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assert_eq!(module.get_var_value::<INT>("answer").unwrap(), 42);
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}
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#[test]
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fn test_module_sub_module() -> Result<(), Box<EvalAltResult>> {
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let mut module = Module::new();
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let mut sub_module = Module::new();
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let mut sub_module2 = Module::new();
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sub_module2.set_var("answer", 41 as INT);
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let hash_inc = sub_module2.set_fn_1("inc", |x: INT| Ok(x + 1));
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sub_module.set_sub_module("universe", sub_module2);
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module.set_sub_module("life", sub_module);
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module.set_var("MYSTIC_NUMBER", Dynamic::from(42 as INT));
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assert!(module.contains_sub_module("life"));
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let m = module.get_sub_module("life").unwrap();
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assert!(m.contains_sub_module("universe"));
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let m2 = m.get_sub_module("universe").unwrap();
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assert!(m2.contains_var("answer"));
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assert!(m2.contains_fn(hash_inc, false));
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assert_eq!(m2.get_var_value::<INT>("answer").unwrap(), 41);
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let mut resolver = StaticModuleResolver::new();
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resolver.insert("question", module);
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let mut engine = Engine::new();
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engine.set_module_resolver(Some(resolver));
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assert_eq!(
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engine.eval::<INT>(r#"import "question" as q; q::MYSTIC_NUMBER"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "question" as q; q::life::universe::answer + 1"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(
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r#"import "question" as q; q::life::universe::inc(q::life::universe::answer)"#
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)?,
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42
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);
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Ok(())
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}
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#[test]
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fn test_module_resolver() -> Result<(), Box<EvalAltResult>> {
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let mut resolver = StaticModuleResolver::new();
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let mut module = Module::new();
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module.set_var("answer", 42 as INT);
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module.set_fn_4("sum".to_string(), |x: INT, y: INT, z: INT, w: INT| {
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Ok(x + y + z + w)
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});
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module.set_fn_1_mut("double".to_string(), |x: &mut INT| {
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*x *= 2;
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Ok(())
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});
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#[cfg(not(feature = "no_float"))]
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module.set_fn_4_mut(
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"sum_of_three_args".to_string(),
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|target: &mut INT, a: INT, b: INT, c: rhai::FLOAT| {
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*target = a + b + c as INT;
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Ok(())
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},
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);
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resolver.insert("hello", module);
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let mut engine = Engine::new();
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engine.set_module_resolver(Some(resolver));
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assert_eq!(
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engine.eval::<INT>(
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r#"
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import "hello" as h1;
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import "hello" as h2;
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h1::sum(h2::answer, -10, 3, 7)
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"#
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)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(
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r#"
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import "hello" as h1;
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import "hello" as h2;
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let x = 42;
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h1::sum(x, -10, 3, 7)
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"#
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)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(
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r#"
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import "hello" as h1;
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import "hello" as h2;
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let x = 42;
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h1::sum(x, 0, 0, 0);
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x
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"#
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)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(
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r#"
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import "hello" as h;
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let x = 21;
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h::double(x);
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x
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"#
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)?,
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42
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);
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#[cfg(not(feature = "no_float"))]
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{
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assert_eq!(
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engine.eval::<INT>(
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r#"
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import "hello" as h;
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let x = 21;
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h::sum_of_three_args(x, 14, 26, 2.0);
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x
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"#
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)?,
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42
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);
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}
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#[cfg(not(feature = "unchecked"))]
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{
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engine.set_max_modules(5);
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assert!(matches!(
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*engine
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.eval::<INT>(
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r#"
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let sum = 0;
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for x in range(0, 10) {
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import "hello" as h;
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sum += h::answer;
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}
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sum
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"#
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)
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.expect_err("should error"),
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EvalAltResult::ErrorTooManyModules(_)
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));
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#[cfg(not(feature = "no_function"))]
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assert!(matches!(
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*engine
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.eval::<INT>(
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r#"
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let sum = 0;
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fn foo() {
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import "hello" as h;
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sum += h::answer;
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}
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for x in range(0, 10) {
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foo();
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}
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sum
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"#
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)
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.expect_err("should error"),
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EvalAltResult::ErrorInFunctionCall(fn_name, _, _) if fn_name == "foo"
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));
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engine.set_max_modules(1000);
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#[cfg(not(feature = "no_function"))]
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engine.eval::<()>(
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r#"
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fn foo() {
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import "hello" as h;
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}
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for x in range(0, 10) {
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foo();
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}
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"#,
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)?;
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}
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Ok(())
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}
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#[test]
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#[cfg(not(feature = "no_function"))]
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fn test_module_from_ast() -> Result<(), Box<EvalAltResult>> {
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let mut engine = Engine::new();
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let mut resolver1 = StaticModuleResolver::new();
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let mut sub_module = Module::new();
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sub_module.set_var("foo", true);
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resolver1.insert("another module", sub_module);
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let ast = engine.compile(
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r#"
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// Functions become module functions
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fn calc(x) {
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x + 1
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}
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fn add_len(x, y) {
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x + len(y)
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}
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fn cross_call(x) {
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calc(x)
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}
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private fn hidden() {
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throw "you shouldn't see me!";
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}
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// Imported modules become sub-modules
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import "another module" as extra;
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// Variables defined at global level become module variables
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const x = 123;
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let foo = 41;
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let hello;
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// Final variable values become constant module variable values
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foo = calc(foo);
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hello = "hello, " + foo + " worlds!";
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export
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x as abc,
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foo,
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hello;
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"#,
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)?;
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engine.set_module_resolver(Some(resolver1));
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let module = Module::eval_ast_as_new(Scope::new(), &ast, &engine)?;
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let mut resolver2 = StaticModuleResolver::new();
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resolver2.insert("testing", module);
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engine.set_module_resolver(Some(resolver2));
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as ttt; ttt::abc"#)?,
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123
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as ttt; ttt::foo"#)?,
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42
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);
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assert!(engine.eval::<bool>(r#"import "testing" as ttt; ttt::extra::foo"#)?);
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assert_eq!(
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engine.eval::<String>(r#"import "testing" as ttt; ttt::hello"#)?,
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"hello, 42 worlds!"
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as ttt; ttt::calc(999)"#)?,
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1000
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as ttt; ttt::cross_call(999)"#)?,
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1000
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as ttt; ttt::add_len(ttt::foo, ttt::hello)"#)?,
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59
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);
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assert!(matches!(
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*engine
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.consume(r#"import "testing" as ttt; ttt::hidden()"#)
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.expect_err("should error"),
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EvalAltResult::ErrorFunctionNotFound(fn_name, _) if fn_name == "ttt::hidden ()"
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));
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Ok(())
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}
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#[test]
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fn test_module_export() -> Result<(), Box<EvalAltResult>> {
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let engine = Engine::new();
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assert!(matches!(
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engine.compile(r"let x = 10; { export x; }").expect_err("should error"),
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ParseError(x, _) if *x == ParseErrorType::WrongExport
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));
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#[cfg(not(feature = "no_function"))]
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assert!(matches!(
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engine.compile(r"fn abc(x) { export x; }").expect_err("should error"),
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ParseError(x, _) if *x == ParseErrorType::WrongExport
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));
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Ok(())
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}
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#[test]
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fn test_module_str() -> Result<(), Box<EvalAltResult>> {
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fn test_fn(_input: ImmutableString) -> Result<INT, Box<EvalAltResult>> {
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Ok(42)
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}
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fn test_fn2(_input: &str) -> Result<INT, Box<EvalAltResult>> {
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Ok(42)
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}
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fn test_fn3(_input: String) -> Result<INT, Box<EvalAltResult>> {
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Ok(42)
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}
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let mut engine = rhai::Engine::new();
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let mut module = Module::new();
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module.set_fn_1("test", test_fn);
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module.set_fn_1("test2", test_fn2);
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module.set_fn_1("test3", test_fn3);
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let mut static_modules = rhai::module_resolvers::StaticModuleResolver::new();
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static_modules.insert("test", module);
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engine.set_module_resolver(Some(static_modules));
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assert_eq!(
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engine.eval::<INT>(r#"import "test" as test; test::test("test");"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "test" as test; test::test2("test");"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "test" as test; test::test3("test");"#)?,
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42
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);
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Ok(())
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}
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#[cfg(not(feature = "no_function"))]
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#[test]
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fn test_module_ast_namespace() -> Result<(), Box<EvalAltResult>> {
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let script = r#"
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fn foo(x) { x + 1 }
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fn bar(x) { foo(x) }
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"#;
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let mut engine = Engine::new();
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let ast = engine.compile(script)?;
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let module = Module::eval_ast_as_new(Default::default(), &ast, &engine)?;
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let mut resolver = StaticModuleResolver::new();
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resolver.insert("testing", module);
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engine.set_module_resolver(Some(resolver));
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as t; t::foo(41)"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(r#"import "testing" as t; t::bar(41)"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(r#"fn foo(x) { x - 1 } import "testing" as t; t::foo(41)"#)?,
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42
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);
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assert_eq!(
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engine.eval::<INT>(r#"fn foo(x) { x - 1 } import "testing" as t; t::bar(41)"#)?,
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42
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);
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Ok(())
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}
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#[cfg(not(feature = "no_function"))]
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#[test]
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fn test_module_ast_namespace2() -> Result<(), Box<EvalAltResult>> {
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use rhai::{Engine, Module, Scope};
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const MODULE_TEXT: &str = r#"
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fn run_function(function) {
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call(function)
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}
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"#;
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const SCRIPT: &str = r#"
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import "test_module" as test;
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fn foo() {
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print("foo");
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}
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test::run_function(Fn("foo"));
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"#;
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let mut engine = Engine::new();
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let module_ast = engine.compile(MODULE_TEXT)?;
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let module = Module::eval_ast_as_new(Scope::new(), &module_ast, &engine)?;
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let mut static_modules = rhai::module_resolvers::StaticModuleResolver::new();
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static_modules.insert("test_module", module);
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engine.set_module_resolver(Some(static_modules));
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engine.consume(SCRIPT)?;
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Ok(())
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}
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