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Add support for static variables in GDScript

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Which allows editable data associated with a particular class instead of
the instance. Scripts with static variables are kept in memory
indefinitely unless the `@static_unload` annotation is used or the
`static_unload()` method is called on the GDScript.

If the custom function `_static_init()` exists it will be called when
the class is loaded, after the static variables are set.
This commit is contained in:
George Marques
2023-04-19 11:10:35 -03:00
parent 352ebe9725
commit 0ba6048ad3
36 changed files with 689 additions and 86 deletions
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3
modules/gdscript/gdscript_compiler.h
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@@ -52,6 +52,7 @@ class GDScriptCompiler {
HashMap<StringName, GDScriptCodeGenerator::Address> parameters;
HashMap<StringName, GDScriptCodeGenerator::Address> locals;
List<HashMap<StringName, GDScriptCodeGenerator::Address>> locals_stack;
bool is_static = false;
GDScriptCodeGenerator::Address add_local(const StringName &p_name, const GDScriptDataType &p_type) {
uint32_t addr = generator->add_local(p_name, p_type);
@@ -130,6 +131,7 @@ class GDScriptCompiler {
void _add_locals_in_block(CodeGen &codegen, const GDScriptParser::SuiteNode *p_block);
Error _parse_block(CodeGen &codegen, const GDScriptParser::SuiteNode *p_block, bool p_add_locals = true);
GDScriptFunction *_parse_function(Error &r_error, GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::FunctionNode *p_func, bool p_for_ready = false, bool p_for_lambda = false);
GDScriptFunction *_make_static_initializer(Error &r_error, GDScript *p_script, const GDScriptParser::ClassNode *p_class);
Error _parse_setter_getter(GDScript *p_script, const GDScriptParser::ClassNode *p_class, const GDScriptParser::VariableNode *p_variable, bool p_is_setter);
Error _populate_class_members(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
Error _compile_class(GDScript *p_script, const GDScriptParser::ClassNode *p_class, bool p_keep_state);
@@ -138,6 +140,7 @@ class GDScriptCompiler {
StringName source;
String error;
GDScriptParser::ExpressionNode *awaited_node = nullptr;
bool has_static_data = false;
public:
static void convert_to_initializer_type(Variant &p_variant, const GDScriptParser::VariableNode *p_node);