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Shared variant of Dynamic type; All read/write access operations in Dynamic backed by Read/Write lock guards; new shared() script function

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This commit is contained in:
Ilya Lakhin
2020-07-27 11:30:09 +07:00
parent 721c578407
commit e5fe222de3
11 changed files with 383 additions and 73 deletions
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39
src/engine.rs
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@@ -91,6 +91,7 @@ pub const KEYWORD_EVAL: &str = "eval";
pub const KEYWORD_FN_PTR: &str = "Fn";
pub const KEYWORD_FN_PTR_CALL: &str = "call";
pub const KEYWORD_FN_PTR_CURRY: &str = "curry";
pub const KEYWORD_SHARED: &str = "shared";
pub const KEYWORD_THIS: &str = "this";
pub const FN_TO_STRING: &str = "to_string";
#[cfg(not(feature = "no_object"))]
@@ -1068,6 +1069,18 @@ impl Engine {
let val = target.as_mut();
// if val.is_shared() {
// return self.get_indexed_mut(
// state,
// lib,
// &mut Target::Value(val.read::<Dynamic>().unwrap()),
// idx,
// idx_pos,
// create,
// level,
// );
// }
match val {
#[cfg(not(feature = "no_index"))]
Dynamic(Union::Array(arr)) => {
@@ -1102,7 +1115,7 @@ impl Engine {
map.entry(index).or_insert(Default::default()).into()
} else {
let index = _idx
.downcast_ref::<ImmutableString>()
.read_lock::<ImmutableString>()
.ok_or_else(|| EvalAltResult::ErrorStringIndexExpr(idx_pos))?;
map.get_mut(index.as_str())
@@ -1280,7 +1293,11 @@ impl Engine {
)),
// Normal assignment
ScopeEntryType::Normal if op.is_empty() => {
*lhs_ptr = rhs_val;
if lhs_ptr.is_shared() {
*lhs_ptr.write_lock::<Dynamic>().unwrap() = rhs_val;
} else {
*lhs_ptr = rhs_val;
}
Ok(Default::default())
}
// Op-assignment - in order of precedence:
@@ -1298,8 +1315,13 @@ impl Engine {
.get_fn(hash_fn, false)
.or_else(|| self.packages.get_fn(hash_fn, false))
{
// Overriding exact implementation
func(self, lib, &mut [lhs_ptr, &mut rhs_val])?;
if lhs_ptr.is_shared() {
// Overriding exact implementation
func(self, lib, &mut [&mut lhs_ptr.write_lock::<Dynamic>().unwrap(), &mut rhs_val])?;
} else {
// Overriding exact implementation
func(self, lib, &mut [lhs_ptr, &mut rhs_val])?;
}
} else if run_builtin_op_assignment(op, lhs_ptr, &rhs_val)?.is_none() {
// Not built in, map to `var = var op rhs`
let op = &op[..op.len() - 1]; // extract operator without =
@@ -1313,8 +1335,13 @@ impl Engine {
level,
)
.map_err(|err| err.new_position(*op_pos))?;
// Set value to LHS
*lhs_ptr = value;
if lhs_ptr.is_shared() {
// Set value to LHS
*lhs_ptr.write_lock::<Dynamic>().unwrap() = value;
} else {
// Set value to LHS
*lhs_ptr = value;
}
}
Ok(Default::default())
}