jinja: correct member access rule (#18905)
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@@ -560,6 +560,7 @@ value for_statement::execute_impl(context & ctx) {
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for (size_t i = 0; i < filtered_items.size(); i++) {
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JJ_DEBUG("For loop iteration %zu/%zu", i + 1, filtered_items.size());
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value_object loop_obj = mk_val<value_object>();
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loop_obj->has_builtins = false; // loop object has no builtins
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loop_obj->insert("index", mk_val<value_int>(i + 1));
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loop_obj->insert("index0", mk_val<value_int>(i));
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loop_obj->insert("revindex", mk_val<value_int>(filtered_items.size() - i));
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@@ -717,6 +718,7 @@ value member_expression::execute_impl(context & ctx) {
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value property;
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if (this->computed) {
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// syntax: obj[expr]
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JJ_DEBUG("Member expression, computing property type %s", this->property->type().c_str());
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int64_t arr_size = 0;
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@@ -745,10 +747,24 @@ value member_expression::execute_impl(context & ctx) {
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property = this->property->execute(ctx);
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}
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} else {
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// syntax: obj.prop
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if (!is_stmt<identifier>(this->property)) {
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throw std::runtime_error("Non-computed member property must be an identifier");
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throw std::runtime_error("Static member property must be an identifier");
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}
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property = mk_val<value_string>(cast_stmt<identifier>(this->property)->val);
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std::string prop = property->as_string().str();
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JJ_DEBUG("Member expression, object type %s, static property '%s'", object->type().c_str(), prop.c_str());
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// behavior of jinja2: obj having prop as a built-in function AND 'prop', as an object key,
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// then obj.prop returns the built-in function, not the property value.
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// while obj['prop'] returns the property value.
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// example: {"obj": {"items": 123}} -> obj.items is the built-in function, obj['items'] is 123
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value val = try_builtin_func(ctx, prop, object, true);
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if (!is_val<value_undefined>(val)) {
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return val;
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}
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// else, fallthrough to normal property access below
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}
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JJ_DEBUG("Member expression on object type %s, property type %s", object->type().c_str(), property->type().c_str());
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