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xo-expression: bugfix: ensure in-layer uniqueness of vars

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This commit is contained in:
Roland Conybeare 2024-07-03 14:43:34 -04:00
commit f18c33b249
2 changed files with 9 additions and 2 deletions
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5
include/xo/expression/Variable.hpp
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@ -25,6 +25,11 @@ namespace xo {
return new Variable(name, var_type);
}
/** return copy of x: same var, different object identity **/
static ref::rp<Variable> copy(ref::brw<Variable> x) {
return new Variable(x->name(), x->valuetype());
}
/** downcast from Expression **/
static ref::brw<Variable> from(ref::brw<Expression> x) {
return ref::brw<Variable>::from(x);