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Simplify Engine creation.

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This commit is contained in:
Stephen Chung 2021-06-29 17:47:31 +08:00
parent 27c126d2f0
commit 4143ef1e3f
1 changed files with 45 additions and 75 deletions
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112
src/engine.rs
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@ -718,6 +718,26 @@ pub struct Limits {
pub max_map_size: Option<NonZeroUsize>,
}
impl Default for Limits {
fn default() -> Self {
Self {
#[cfg(not(feature = "no_function"))]
max_call_stack_depth: MAX_CALL_STACK_DEPTH,
max_expr_depth: NonZeroUsize::new(MAX_EXPR_DEPTH),
#[cfg(not(feature = "no_function"))]
max_function_expr_depth: NonZeroUsize::new(MAX_FUNCTION_EXPR_DEPTH),
max_operations: None,
#[cfg(not(feature = "no_module"))]
max_modules: usize::MAX,
max_string_size: None,
#[cfg(not(feature = "no_index"))]
max_array_size: None,
#[cfg(not(feature = "no_object"))]
max_map_size: None,
}
}
}
/// Context of a script evaluation process.
#[derive(Debug)]
pub struct EvalContext<'a, 'x, 'px, 'm, 's, 't, 'pt> {
@ -903,86 +923,50 @@ pub fn is_anonymous_fn(fn_name: &str) -> bool {
fn_name.starts_with(FN_ANONYMOUS)
}
/// Print to stdout
/// Print to `stdout`
#[inline(always)]
fn default_print(_s: &str) {
#[allow(unused_variables)]
fn print_to_stdout(s: &str) {
#[cfg(not(feature = "no_std"))]
#[cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
println!("{}", _s);
println!("{}", s);
}
/// Debug to stdout
/// Debug to `stdout`
#[inline(always)]
fn default_debug(_s: &str, _source: Option<&str>, _pos: Position) {
#[allow(unused_variables)]
fn debug_to_stdout(s: &str, source: Option<&str>, pos: Position) {
#[cfg(not(feature = "no_std"))]
#[cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
if let Some(source) = _source {
println!("{}{:?} | {}", source, _pos, _s);
} else if _pos.is_none() {
println!("{}", _s);
if let Some(source) = source {
println!("{}{:?} | {}", source, pos, s);
} else if pos.is_none() {
println!("{}", s);
} else {
println!("{:?} | {}", _pos, _s);
println!("{:?} | {}", pos, s);
}
}
impl Engine {
/// Create a new [`Engine`]
/// Create a new [`Engine`].
#[inline]
#[must_use]
pub fn new() -> Self {
// Create the new scripting Engine
let mut engine = Self {
global_namespace: Default::default(),
global_modules: Default::default(),
global_sub_modules: Default::default(),
let mut engine = Self::new_raw();
#[cfg(not(feature = "no_module"))]
#[cfg(not(feature = "no_std"))]
#[cfg(not(any(target_arch = "wasm32", target_arch = "wasm64")))]
module_resolver: Some(Box::new(crate::module::resolvers::FileModuleResolver::new())),
#[cfg(not(feature = "no_module"))]
#[cfg(any(feature = "no_std", target_arch = "wasm32",))]
module_resolver: None,
type_names: Default::default(),
empty_string: Default::default(),
disabled_symbols: Default::default(),
custom_keywords: Default::default(),
custom_syntax: Default::default(),
// variable resolver
resolve_var: None,
{
engine.module_resolver =
Some(Box::new(crate::module::resolvers::FileModuleResolver::new()));
}
// default print/debug implementations
print: Some(Box::new(default_print)),
debug: Some(Box::new(default_debug)),
engine.print = Some(Box::new(print_to_stdout));
engine.debug = Some(Box::new(debug_to_stdout));
// progress callback
#[cfg(not(feature = "unchecked"))]
progress: None,
// optimization level
optimization_level: Default::default(),
#[cfg(not(feature = "unchecked"))]
limits: Limits {
#[cfg(not(feature = "no_function"))]
max_call_stack_depth: MAX_CALL_STACK_DEPTH,
max_expr_depth: NonZeroUsize::new(MAX_EXPR_DEPTH),
#[cfg(not(feature = "no_function"))]
max_function_expr_depth: NonZeroUsize::new(MAX_FUNCTION_EXPR_DEPTH),
max_operations: None,
#[cfg(not(feature = "no_module"))]
max_modules: usize::MAX,
max_string_size: None,
#[cfg(not(feature = "no_index"))]
max_array_size: None,
#[cfg(not(feature = "no_object"))]
max_map_size: None,
},
};
engine.global_namespace.internal = true;
engine.register_global_module(StandardPackage::new().as_shared_module());
engine
@ -1019,21 +1003,7 @@ impl Engine {
optimization_level: Default::default(),
#[cfg(not(feature = "unchecked"))]
limits: Limits {
#[cfg(not(feature = "no_function"))]
max_call_stack_depth: MAX_CALL_STACK_DEPTH,
max_expr_depth: NonZeroUsize::new(MAX_EXPR_DEPTH),
#[cfg(not(feature = "no_function"))]
max_function_expr_depth: NonZeroUsize::new(MAX_FUNCTION_EXPR_DEPTH),
max_operations: None,
#[cfg(not(feature = "no_module"))]
max_modules: usize::MAX,
max_string_size: None,
#[cfg(not(feature = "no_index"))]
max_array_size: None,
#[cfg(not(feature = "no_object"))]
max_map_size: None,
},
limits: Default::default(),
};
engine.global_namespace.internal = true;