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godot/modules/gdscript/gdscript_warning.cpp

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/**************************************************************************/
/* gdscript_warning.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "gdscript_warning.h"
#include "core/variant/variant.h"
#ifdef DEBUG_ENABLED
String GDScriptWarning::get_message() const {
#define CHECK_SYMBOLS(m_amount) ERR_FAIL_COND_V(symbols.size() < m_amount, String());
switch (code) {
case UNASSIGNED_VARIABLE:
CHECK_SYMBOLS(1);
return vformat(R"(The variable "%s" was used but never assigned a value.)", symbols[0]);
case UNASSIGNED_VARIABLE_OP_ASSIGN:
CHECK_SYMBOLS(1);
return vformat(R"(Using assignment with operation but the variable "%s" was not previously assigned a value.)", symbols[0]);
case UNUSED_VARIABLE:
CHECK_SYMBOLS(1);
return vformat(R"(The local variable "%s" is declared but never used in the block. If this is intended, prefix it with an underscore: "_%s".)", symbols[0], symbols[0]);
case UNUSED_LOCAL_CONSTANT:
CHECK_SYMBOLS(1);
return vformat(R"(The local constant "%s" is declared but never used in the block. If this is intended, prefix it with an underscore: "_%s".)", symbols[0], symbols[0]);
case UNUSED_PRIVATE_CLASS_VARIABLE:
CHECK_SYMBOLS(1);
return vformat(R"(The class variable "%s" is declared but never used in the class.)", symbols[0]);
case UNUSED_PARAMETER:
CHECK_SYMBOLS(2);
return vformat(R"*(The parameter "%s" is never used in the function "%s()". If this is intended, prefix it with an underscore: "_%s".)*", symbols[1], symbols[0], symbols[1]);
case UNUSED_SIGNAL:
CHECK_SYMBOLS(1);
return vformat(R"(The signal "%s" is declared but never explicitly used in the class.)", symbols[0]);
case SHADOWED_VARIABLE:
CHECK_SYMBOLS(4);
return vformat(R"(The local %s "%s" is shadowing an already-declared %s at line %s.)", symbols[0], symbols[1], symbols[2], symbols[3]);
case SHADOWED_VARIABLE_BASE_CLASS:
CHECK_SYMBOLS(4);
return vformat(R"(The local %s "%s" is shadowing an already-declared %s at the base class "%s".)", symbols[0], symbols[1], symbols[2], symbols[3]);
case SHADOWED_GLOBAL_IDENTIFIER:
CHECK_SYMBOLS(3);
return vformat(R"(The %s "%s" has the same name as a %s.)", symbols[0], symbols[1], symbols[2]);
case UNREACHABLE_CODE:
CHECK_SYMBOLS(1);
return vformat(R"*(Unreachable code (statement after return) in function "%s()".)*", symbols[0]);
case UNREACHABLE_PATTERN:
return "Unreachable pattern (pattern after wildcard or bind).";
case STANDALONE_EXPRESSION:
return "Standalone expression (the line has no effect).";
case STANDALONE_TERNARY:
return "Standalone ternary operator: the return value is being discarded.";
case INCOMPATIBLE_TERNARY:
return "Values of the ternary operator are not mutually compatible.";
case UNTYPED_DECLARATION:
CHECK_SYMBOLS(2);
if (symbols[0] == "Function") {
return vformat(R"*(%s "%s()" has no static return type.)*", symbols[0], symbols[1]);
}
return vformat(R"(%s "%s" has no static type.)", symbols[0], symbols[1]);
case INFERRED_DECLARATION:
CHECK_SYMBOLS(2);
return vformat(R"(%s "%s" has an implicitly inferred static type.)", symbols[0], symbols[1]);
case UNSAFE_PROPERTY_ACCESS:
CHECK_SYMBOLS(2);
return vformat(R"(The property "%s" is not present on the inferred type "%s" (but may be present on a subtype).)", symbols[0], symbols[1]);
case UNSAFE_METHOD_ACCESS:
CHECK_SYMBOLS(2);
return vformat(R"*(The method "%s()" is not present on the inferred type "%s" (but may be present on a subtype).)*", symbols[0], symbols[1]);
case UNSAFE_CAST:
CHECK_SYMBOLS(1);
return vformat(R"(Casting "Variant" to "%s" is unsafe.)", symbols[0]);
case UNSAFE_CALL_ARGUMENT:
CHECK_SYMBOLS(5);
return vformat(R"*(The argument %s of the %s "%s()" requires the subtype "%s" but the supertype "%s" was provided.)*", symbols[0], symbols[1], symbols[2], symbols[3], symbols[4]);
case UNSAFE_VOID_RETURN:
CHECK_SYMBOLS(2);
return vformat(R"*(The method "%s()" returns "void" but it's trying to return a call to "%s()" that can't be ensured to also be "void".)*", symbols[0], symbols[1]);
case RETURN_VALUE_DISCARDED:
CHECK_SYMBOLS(1);
return vformat(R"*(The function "%s()" returns a value that will be discarded if not used.)*", symbols[0]);
case STATIC_CALLED_ON_INSTANCE:
CHECK_SYMBOLS(2);
return vformat(R"*(The function "%s()" is a static function but was called from an instance. Instead, it should be directly called from the type: "%s.%s()".)*", symbols[0], symbols[1], symbols[0]);
case REDUNDANT_STATIC_UNLOAD:
return R"(The "@static_unload" annotation is redundant because the file does not have a class with static variables.)";
case REDUNDANT_AWAIT:
return R"("await" keyword not needed in this case, because the expression isn't a coroutine nor a signal.)";
case ASSERT_ALWAYS_TRUE:
return "Assert statement is redundant because the expression is always true.";
case ASSERT_ALWAYS_FALSE:
return "Assert statement will raise an error because the expression is always false.";
case INTEGER_DIVISION:
return "Integer division, decimal part will be discarded.";
case NARROWING_CONVERSION:
return "Narrowing conversion (float is converted to int and loses precision).";
case INT_AS_ENUM_WITHOUT_CAST:
return "Integer used when an enum value is expected. If this is intended cast the integer to the enum type.";
case INT_AS_ENUM_WITHOUT_MATCH:
CHECK_SYMBOLS(3);
return vformat(R"(Cannot %s %s as Enum "%s": no enum member has matching value.)", symbols[0], symbols[1], symbols[2]);
case EMPTY_FILE:
return "Empty script file.";
case DEPRECATED_KEYWORD:
CHECK_SYMBOLS(2);
return vformat(R"(The "%s" keyword is deprecated and will be removed in a future release, please replace its uses by "%s".)", symbols[0], symbols[1]);
case RENAMED_IN_GODOT_4_HINT:
break; // Renamed identifier hint is taken care of by the GDScriptAnalyzer. No message needed here.
case CONFUSABLE_IDENTIFIER:
CHECK_SYMBOLS(1);
return vformat(R"(The identifier "%s" has misleading characters and might be confused with something else.)", symbols[0]);
case CONFUSABLE_LOCAL_DECLARATION:
CHECK_SYMBOLS(2);
return vformat(R"(The %s "%s" is declared below in the parent block.)", symbols[0], symbols[1]);
case CONFUSABLE_LOCAL_USAGE:
CHECK_SYMBOLS(1);
return vformat(R"(The identifier "%s" will be shadowed below in the block.)", symbols[0]);
case INFERENCE_ON_VARIANT:
CHECK_SYMBOLS(1);
return vformat("The %s type is being inferred from a Variant value, so it will be typed as Variant.", symbols[0]);
case NATIVE_METHOD_OVERRIDE:
CHECK_SYMBOLS(2);
return vformat(R"*(The method "%s()" overrides a method from native class "%s". This won't be called by the engine and may not work as expected.)*", symbols[0], symbols[1]);
case GET_NODE_DEFAULT_WITHOUT_ONREADY:
CHECK_SYMBOLS(1);
return vformat(R"*(The default value is using "%s" which won't return nodes in the scene tree before "_ready()" is called. Use the "@onready" annotation to solve this.)*", symbols[0]);
case ONREADY_WITH_EXPORT:
return R"("@onready" will set the default value after "@export" takes effect and will override it.)";
#ifndef DISABLE_DEPRECATED
// Never produced. These warnings migrated from 3.x by mistake.
case PROPERTY_USED_AS_FUNCTION: // There is already an error.
case CONSTANT_USED_AS_FUNCTION: // There is already an error.
case FUNCTION_USED_AS_PROPERTY: // This is valid, returns `Callable`.
break;
#endif
case WARNING_MAX:
break; // Can't happen, but silences warning.
}
ERR_FAIL_V_MSG(String(), vformat(R"(Invalid GDScript warning "%s".)", get_name_from_code(code)));
#undef CHECK_SYMBOLS
}
int GDScriptWarning::get_default_value(Code p_code) {
ERR_FAIL_INDEX_V_MSG(p_code, WARNING_MAX, WarnLevel::IGNORE, "Getting default value of invalid warning code.");
return default_warning_levels[p_code];
}
PropertyInfo GDScriptWarning::get_property_info(Code p_code) {
// Making this a separate function in case a warning needs different PropertyInfo in the future.
if (p_code == Code::RENAMED_IN_GODOT_4_HINT) {
return PropertyInfo(Variant::BOOL, get_settings_path_from_code(p_code));
}
return PropertyInfo(Variant::INT, get_settings_path_from_code(p_code), PROPERTY_HINT_ENUM, "Ignore,Warn,Error");
}
String GDScriptWarning::get_name() const {
return get_name_from_code(code);
}
String GDScriptWarning::get_name_from_code(Code p_code) {
ERR_FAIL_COND_V(p_code < 0 || p_code >= WARNING_MAX, String());
static const char *names[] = {
"UNASSIGNED_VARIABLE",
"UNASSIGNED_VARIABLE_OP_ASSIGN",
"UNUSED_VARIABLE",
"UNUSED_LOCAL_CONSTANT",
"UNUSED_PRIVATE_CLASS_VARIABLE",
"UNUSED_PARAMETER",
"UNUSED_SIGNAL",
"SHADOWED_VARIABLE",
"SHADOWED_VARIABLE_BASE_CLASS",
"SHADOWED_GLOBAL_IDENTIFIER",
"UNREACHABLE_CODE",
"UNREACHABLE_PATTERN",
"STANDALONE_EXPRESSION",
"STANDALONE_TERNARY",
"INCOMPATIBLE_TERNARY",
"UNTYPED_DECLARATION",
"INFERRED_DECLARATION",
"UNSAFE_PROPERTY_ACCESS",
"UNSAFE_METHOD_ACCESS",
"UNSAFE_CAST",
"UNSAFE_CALL_ARGUMENT",
"UNSAFE_VOID_RETURN",
"RETURN_VALUE_DISCARDED",
"STATIC_CALLED_ON_INSTANCE",
"REDUNDANT_STATIC_UNLOAD",
"REDUNDANT_AWAIT",
"ASSERT_ALWAYS_TRUE",
"ASSERT_ALWAYS_FALSE",
"INTEGER_DIVISION",
"NARROWING_CONVERSION",
"INT_AS_ENUM_WITHOUT_CAST",
"INT_AS_ENUM_WITHOUT_MATCH",
"EMPTY_FILE",
"DEPRECATED_KEYWORD",
"RENAMED_IN_GODOT_4_HINT",
"CONFUSABLE_IDENTIFIER",
"CONFUSABLE_LOCAL_DECLARATION",
"CONFUSABLE_LOCAL_USAGE",
"INFERENCE_ON_VARIANT",
"NATIVE_METHOD_OVERRIDE",
"GET_NODE_DEFAULT_WITHOUT_ONREADY",
"ONREADY_WITH_EXPORT",
#ifndef DISABLE_DEPRECATED
"PROPERTY_USED_AS_FUNCTION",
"CONSTANT_USED_AS_FUNCTION",
"FUNCTION_USED_AS_PROPERTY",
#endif
};
static_assert((sizeof(names) / sizeof(*names)) == WARNING_MAX, "Amount of warning types don't match the amount of warning names.");
return names[(int)p_code];
}
String GDScriptWarning::get_settings_path_from_code(Code p_code) {
return "debug/gdscript/warnings/" + get_name_from_code(p_code).to_lower();
}
GDScriptWarning::Code GDScriptWarning::get_code_from_name(const String &p_name) {
for (int i = 0; i < WARNING_MAX; i++) {
if (get_name_from_code((Code)i) == p_name) {
return (Code)i;
}
}
return WARNING_MAX;
}
#endif // DEBUG_ENABLED
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