From 023b1d7f5a60b5833f7e2030fade6cc1cff54eba Mon Sep 17 00:00:00 2001
From: George Marques <george@gmarqu.es>
Date: Tue, 17 May 2022 14:14:42 -0300
Subject: Implement read-only arrays

Arrays can be set as read-only and thus cannot be modified. Assigning
the array will create an editable copy.

Similar to is already done to read-only dictionaries.
---
 core/variant/variant_setget.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'core/variant/variant_setget.cpp')

diff --git a/core/variant/variant_setget.cpp b/core/variant/variant_setget.cpp
index 6514922d01..3839da495f 100644
--- a/core/variant/variant_setget.cpp
+++ b/core/variant/variant_setget.cpp
@@ -624,6 +624,11 @@ struct VariantIndexedSetGet_Array {
 		PtrToArg<Variant>::encode(v[index], member);
 	}
 	static void set(Variant *base, int64_t index, const Variant *value, bool *valid, bool *oob) {
+		if (VariantGetInternalPtr<Array>::get_ptr(base)->is_read_only()) {
+			*valid = false;
+			*oob = true;
+			return;
+		}
 		int64_t size = VariantGetInternalPtr<Array>::get_ptr(base)->size();
 		if (index < 0) {
 			index += size;
@@ -638,6 +643,10 @@ struct VariantIndexedSetGet_Array {
 		*valid = true;
 	}
 	static void validated_set(Variant *base, int64_t index, const Variant *value, bool *oob) {
+		if (VariantGetInternalPtr<Array>::get_ptr(base)->is_read_only()) {
+			*oob = true;
+			return;
+		}
 		int64_t size = VariantGetInternalPtr<Array>::get_ptr(base)->size();
 		if (index < 0) {
 			index += size;
-- 
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