Clean up types.
This commit is contained in:
144
src/eval/stmt.rs
144
src/eval/stmt.rs
@@ -8,10 +8,7 @@ use crate::ast::{
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use crate::func::{get_builtin_op_assignment_fn, get_hasher};
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use crate::types::dynamic::{AccessMode, Union};
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use crate::types::RestoreOnDrop;
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use crate::{
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Dynamic, Engine, ImmutableString, Module, Position, RhaiResult, RhaiResultOf, Scope, Shared,
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ERR, INT,
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};
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use crate::{Dynamic, Engine, Position, RhaiResult, RhaiResultOf, Scope, SharedModule, ERR, INT};
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use std::hash::{Hash, Hasher};
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#[cfg(feature = "no_std")]
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use std::prelude::v1::*;
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@@ -29,7 +26,7 @@ impl Engine {
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&self,
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global: &mut GlobalRuntimeState,
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caches: &mut Caches,
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lib: &[Shared<Module>],
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lib: &[SharedModule],
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level: usize,
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scope: &mut Scope,
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this_ptr: &mut Option<&mut Dynamic>,
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@@ -42,7 +39,7 @@ impl Engine {
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// Restore scope at end of block if necessary
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let orig_scope_len = scope.len();
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let scope = &mut *RestoreOnDrop::new_if(restore_orig_state, scope, move |s| {
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let scope = &mut *RestoreOnDrop::lock_if(restore_orig_state, scope, move |s| {
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s.rewind(orig_scope_len);
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});
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@@ -55,7 +52,7 @@ impl Engine {
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global.scope_level += 1;
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}
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let global = &mut *RestoreOnDrop::new_if(restore_orig_state, global, move |g| {
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let global = &mut *RestoreOnDrop::lock_if(restore_orig_state, global, move |g| {
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g.scope_level -= 1;
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#[cfg(not(feature = "no_module"))]
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g.truncate_imports(orig_imports_len);
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@@ -67,7 +64,7 @@ impl Engine {
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// Pop new function resolution caches at end of block
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let orig_fn_resolution_caches_len = caches.fn_resolution_caches_len();
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let caches = &mut *RestoreOnDrop::new(caches, move |c| {
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let caches = &mut *RestoreOnDrop::lock(caches, move |c| {
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c.rewind_fn_resolution_caches(orig_fn_resolution_caches_len)
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});
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@@ -96,10 +93,11 @@ impl Engine {
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.skip(imports_len)
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.any(|(.., m)| m.contains_indexed_global_functions())
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{
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// Different scenarios where the cache must be cleared - notice that this is
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// expensive as all function resolutions must start again
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if caches.fn_resolution_caches_len() > orig_fn_resolution_caches_len {
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// When new module is imported with global functions and there is already
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// a new cache, clear it - notice that this is expensive as all function
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// resolutions must start again
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// a new cache, just clear it
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caches.fn_resolution_cache_mut().clear();
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} else if restore_orig_state {
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// When new module is imported with global functions, push a new cache
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@@ -120,20 +118,18 @@ impl Engine {
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&self,
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global: &mut GlobalRuntimeState,
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caches: &mut Caches,
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lib: &[Shared<Module>],
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lib: &[SharedModule],
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level: usize,
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op_info: &OpAssignment,
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target: &mut Target,
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root: (&str, Position),
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new_val: Dynamic,
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mut new_val: Dynamic,
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) -> RhaiResultOf<()> {
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// Assignment to constant variable?
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if target.is_read_only() {
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// Assignment to constant variable
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return Err(ERR::ErrorAssignmentToConstant(root.0.to_string(), root.1).into());
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}
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let mut new_val = new_val;
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if op_info.is_op_assignment() {
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let OpAssignment {
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hash_op_assign,
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@@ -204,7 +200,7 @@ impl Engine {
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&self,
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global: &mut GlobalRuntimeState,
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caches: &mut Caches,
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lib: &[Shared<Module>],
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lib: &[SharedModule],
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level: usize,
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scope: &mut Scope,
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this_ptr: &mut Option<&mut Dynamic>,
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@@ -215,7 +211,7 @@ impl Engine {
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let reset =
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self.run_debugger_with_reset(global, caches, lib, level, scope, this_ptr, stmt)?;
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#[cfg(feature = "debugging")]
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let global = &mut *RestoreOnDrop::new(global, move |g| g.debugger.reset_status(reset));
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let global = &mut *RestoreOnDrop::lock(global, move |g| g.debugger.reset_status(reset));
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// Coded this way for better branch prediction.
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// Popular branches are lifted out of the `match` statement into their own branches.
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@@ -240,11 +236,9 @@ impl Engine {
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.eval_expr(global, caches, lib, level, scope, this_ptr, rhs)?
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.flatten();
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let search_val =
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let (mut lhs_ptr, pos) =
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self.search_namespace(global, caches, lib, level, scope, this_ptr, lhs)?;
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let (mut lhs_ptr, pos) = search_val;
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let var_name = x.3.as_str();
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#[cfg(not(feature = "no_closure"))]
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@@ -267,16 +261,17 @@ impl Engine {
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return self
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.eval_op_assignment(global, caches, lib, level, op_info, lhs_ptr, root, rhs_val)
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.map(|_| Dynamic::UNIT);
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} else {
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let (op_info, BinaryExpr { lhs, rhs }) = &**x;
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}
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#[cfg(any(not(feature = "no_index"), not(feature = "no_object")))]
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{
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let rhs_val = self.eval_expr(global, caches, lib, level, scope, this_ptr, rhs)?;
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// Check if the result is a string. If so, intern it.
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#[cfg(not(feature = "no_closure"))]
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let is_string = !rhs_val.is_shared() && rhs_val.is::<ImmutableString>();
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let is_string = !rhs_val.is_shared() && rhs_val.is::<crate::ImmutableString>();
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#[cfg(feature = "no_closure")]
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let is_string = rhs_val.is::<ImmutableString>();
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let is_string = rhs_val.is::<crate::ImmutableString>();
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let rhs_val = if is_string {
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self.get_interned_string(
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@@ -333,23 +328,20 @@ impl Engine {
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let (expr, if_block, else_block) = &**x;
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let guard_val = self
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.eval_expr(global, caches, lib, level, scope, this_ptr, expr)
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.and_then(|v| {
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v.as_bool().map_err(|typ| {
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self.make_type_mismatch_err::<bool>(typ, expr.position())
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})
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});
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.eval_expr(global, caches, lib, level, scope, this_ptr, expr)?
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.as_bool()
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.map_err(|typ| self.make_type_mismatch_err::<bool>(typ, expr.position()))?;
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match guard_val {
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Ok(true) if if_block.is_empty() => Ok(Dynamic::UNIT),
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Ok(true) => self.eval_stmt_block(
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if guard_val && !if_block.is_empty() {
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self.eval_stmt_block(
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global, caches, lib, level, scope, this_ptr, if_block, true,
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),
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Ok(false) if else_block.is_empty() => Ok(Dynamic::UNIT),
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Ok(false) => self.eval_stmt_block(
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)
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} else if !guard_val && !else_block.is_empty() {
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self.eval_stmt_block(
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global, caches, lib, level, scope, this_ptr, else_block, true,
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),
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err => err.map(Into::into),
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)
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} else {
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Ok(Dynamic::UNIT)
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}
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}
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@@ -421,14 +413,11 @@ impl Engine {
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}
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}
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if let Some(expr) = result {
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self.eval_expr(global, caches, lib, level, scope, this_ptr, expr)
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} else {
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def_case.as_ref().map_or(Ok(Dynamic::UNIT), |&index| {
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let def_expr = &expressions[index].expr;
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self.eval_expr(global, caches, lib, level, scope, this_ptr, def_expr)
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result
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.or_else(|| def_case.as_ref().map(|&index| &expressions[index].expr))
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.map_or(Ok(Dynamic::UNIT), |expr| {
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self.eval_expr(global, caches, lib, level, scope, this_ptr, expr)
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})
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}
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}
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// Loop
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@@ -439,17 +428,16 @@ impl Engine {
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loop {
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self.track_operation(global, body.position())?;
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}
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} else {
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loop {
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match self.eval_stmt_block(
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global, caches, lib, level, scope, this_ptr, body, true,
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) {
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Ok(_) => (),
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Err(err) => match *err {
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ERR::LoopBreak(false, ..) => (),
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ERR::LoopBreak(true, value, ..) => break Ok(value),
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_ => break Err(err),
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},
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}
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loop {
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if let Err(err) = self
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.eval_stmt_block(global, caches, lib, level, scope, this_ptr, body, true)
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{
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match *err {
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ERR::LoopBreak(false, ..) => (),
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ERR::LoopBreak(true, value, ..) => break Ok(value),
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_ => break Err(err),
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}
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}
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}
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@@ -469,15 +457,17 @@ impl Engine {
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break Ok(Dynamic::UNIT);
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}
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if !body.is_empty() {
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if let Err(err) = self.eval_stmt_block(
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global, caches, lib, level, scope, this_ptr, body, true,
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) {
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match *err {
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ERR::LoopBreak(false, ..) => (),
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ERR::LoopBreak(true, value, ..) => break Ok(value),
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_ => break Err(err),
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}
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if body.is_empty() {
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continue;
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}
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if let Err(err) = self
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.eval_stmt_block(global, caches, lib, level, scope, this_ptr, body, true)
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{
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match *err {
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ERR::LoopBreak(false, ..) => (),
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ERR::LoopBreak(true, value, ..) => break Ok(value),
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_ => break Err(err),
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}
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}
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}
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@@ -544,7 +534,7 @@ impl Engine {
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if let Some(func) = func {
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// Restore scope at end of statement
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let orig_scope_len = scope.len();
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let scope = &mut *RestoreOnDrop::new(scope, move |s| {
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let scope = &mut *RestoreOnDrop::lock(scope, move |s| {
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s.rewind(orig_scope_len);
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});
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@@ -616,12 +606,13 @@ impl Engine {
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Stmt::BreakLoop(expr, options, pos) => {
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let is_break = options.contains(ASTFlags::BREAK);
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if let Some(ref expr) = expr {
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self.eval_expr(global, caches, lib, level, scope, this_ptr, expr)
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.and_then(|v| ERR::LoopBreak(is_break, v, *pos).into())
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let value = if let Some(ref expr) = expr {
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self.eval_expr(global, caches, lib, level, scope, this_ptr, expr)?
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} else {
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Err(ERR::LoopBreak(is_break, Dynamic::UNIT, *pos).into())
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}
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Dynamic::UNIT
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};
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Err(ERR::LoopBreak(is_break, value, *pos).into())
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}
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// Try/Catch statement
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@@ -638,9 +629,7 @@ impl Engine {
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match self
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.eval_stmt_block(global, caches, lib, level, scope, this_ptr, try_block, true)
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{
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Ok(_) => self.eval_stmt_block(
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global, caches, lib, level, scope, this_ptr, try_block, true,
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),
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r @ Ok(_) => r,
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Err(err) if err.is_pseudo_error() => Err(err),
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Err(err) if !err.is_catchable() => Err(err),
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Err(mut err) => {
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@@ -682,7 +671,7 @@ impl Engine {
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// Restore scope at end of block
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let orig_scope_len = scope.len();
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let scope =
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&mut *RestoreOnDrop::new_if(!catch_var.is_empty(), scope, move |s| {
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&mut *RestoreOnDrop::lock_if(!catch_var.is_empty(), scope, move |s| {
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s.rewind(orig_scope_len);
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});
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@@ -757,7 +746,8 @@ impl Engine {
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nesting_level,
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will_shadow,
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};
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let context = EvalContext::new(self, global, None, lib, level, scope, this_ptr);
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let context =
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EvalContext::new(self, global, caches, lib, level, scope, this_ptr);
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if !filter(true, info, context)? {
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return Err(ERR::ErrorForbiddenVariable(var_name.to_string(), *pos).into());
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@@ -917,7 +907,7 @@ impl Engine {
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&self,
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global: &mut GlobalRuntimeState,
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caches: &mut Caches,
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lib: &[Shared<Module>],
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lib: &[SharedModule],
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level: usize,
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scope: &mut Scope,
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statements: &[Stmt],
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