Method parse_conditional_states

src/resource/shader_resource.cpp:1862–1903

		}

		s32 parse_conditional_states(RenderState &rs, const char *json)
		{
			// gui = {
			//   states = { <-- You are here.
			//   }
			//   ...
			// }
			//
			// Possible cases:
			// a) "some_expr" = { state_a = b, state_b = c, ... }
			// b) state_x = y
			//   Ignore, this is handled by parse_states().

			TempAllocator4096 ta;
			JsonObject obj(ta);
			RETURN_IF_ERROR(sjson::parse_object(obj, json));

			// Read conditional states.
			auto cur = json_object::begin(obj);
			auto end = json_object::end(obj);
			for (; cur != end; ++cur) {
				JSON_OBJECT_SKIP_HOLE(obj, cur);

				if (sjson::type(cur->second) == JsonValueType::OBJECT) {
					// It must be a conditional expression: "expr()" = { ... }
					RenderState::State states;
					s32 err = parse_states(states, cur->second);
					ENSURE_OR_RETURN(SHADER_RESOURCE, err == 0, _opts);

					DynamicString expr(default_allocator());
					expr = cur->first;
					// Use cur->first.data() as sort key so we can sort states
					// by the order they appear in the source file.
					rs.push_back_states(expr
						, states
						, (uintptr_t)(void *)cur->first.data()
						);
				}
			}

			return 0;
		}

		s32 parse_render_state(RenderState &rs, const char *json)
		{