algo options may be huge, do not copy

cozo-core/src/data/program.rs

@@ -203,7 +203,7 @@ impl InputInlineRulesOrAlgo {
 pub(crate) struct AlgoApply {
     pub(crate) algo: AlgoHandle,
     pub(crate) rule_args: Vec<AlgoRuleArg>,
-    pub(crate) options: BTreeMap<SmartString<LazyCompact>, Expr>,
+    pub(crate) options: Rc<BTreeMap<SmartString<LazyCompact>, Expr>>,
     pub(crate) head: Vec<Symbol>,
     pub(crate) arity: usize,
     pub(crate) span: SourceSpan,
@@ -229,7 +229,7 @@ impl Debug for AlgoApply {
 pub(crate) struct MagicAlgoApply {
     pub(crate) algo: AlgoHandle,
     pub(crate) rule_args: Vec<MagicAlgoRuleArg>,
-    pub(crate) options: BTreeMap<SmartString<LazyCompact>, Expr>,
+    pub(crate) options: Rc<BTreeMap<SmartString<LazyCompact>, Expr>>,
     pub(crate) span: SourceSpan,
     pub(crate) arity: usize,
     pub(crate) algo_impl: Rc<Box<dyn AlgoImpl>>,
@@ -465,7 +465,7 @@ impl Display for InputProgram {
                         }
                         write!(f, "{}", rule_arg)?;
                     }
-                    for (k, v) in options {
+                    for (k, v) in options.as_ref() {
                         if first {
                             first = false;
                         } else {

cozo-core/src/parse/query.rs

@@ -214,7 +214,7 @@ pub(crate) fn parse_query(
                         algo: AlgoApply {
                             algo: handle,
                             rule_args: vec![],
-                            options,
+                            options: Rc::new(options),
                             head,
                             arity,
                             span,
@@ -759,7 +759,7 @@ fn parse_algo_rule(
         AlgoApply {
             algo,
             rule_args,
-            options,
+            options: Rc::new(options),
             head,
             arity,
             span: args_list_span,
@@ -797,7 +797,7 @@ fn make_empty_const_rule(prog: &mut InputProgram, bindings: &[Symbol]) {
                     name: Symbol::new("Constant", Default::default()),
                 },
                 rule_args: vec![],
-                options,
+                options: Rc::new(options),
                 head: bindings.to_vec(),
                 arity: bindings.len(),
                 span: Default::default(),

cozo-core/src/query/stored.rs

@@ -438,7 +438,7 @@ fn make_const_rule(
                     name: Symbol::new("Constant", Default::default()),
                 },
                 rule_args: vec![],
-                options,
+                options: Rc::new(options),
                 head: bindings,
                 arity: bindings_arity,
                 span: Default::default(),