mirror of
https://github.com/godotengine/godot
synced 2024-07-08 19:45:48 +00:00
877802e252
If the type of a variable is a built-in Variant type, then it will automatically be assigned a default value based on the type. This means that the explicit initialization may be unnecessary. Thus this commit removes the warning in such case. This also changes the meaning of the unassigned warning to happen when the variable is used before being assigned, not when it has zero assignments.
261 lines
12 KiB
C++
261 lines
12 KiB
C++
/**************************************************************************/
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/* gdscript_warning.cpp */
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/**************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/**************************************************************************/
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/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/**************************************************************************/
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#include "gdscript_warning.h"
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#include "core/variant/variant.h"
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#ifdef DEBUG_ENABLED
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String GDScriptWarning::get_message() const {
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#define CHECK_SYMBOLS(m_amount) ERR_FAIL_COND_V(symbols.size() < m_amount, String());
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switch (code) {
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case UNASSIGNED_VARIABLE:
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CHECK_SYMBOLS(1);
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return vformat(R"(The variable "%s" was used before being assigned a value.)", symbols[0]);
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case UNASSIGNED_VARIABLE_OP_ASSIGN:
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CHECK_SYMBOLS(1);
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return vformat(R"(Using assignment with operation but the variable "%s" was not previously assigned a value.)", symbols[0]);
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case UNUSED_VARIABLE:
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CHECK_SYMBOLS(1);
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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]);
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case UNUSED_LOCAL_CONSTANT:
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CHECK_SYMBOLS(1);
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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]);
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case UNUSED_PRIVATE_CLASS_VARIABLE:
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CHECK_SYMBOLS(1);
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return vformat(R"(The class variable "%s" is declared but never used in the class.)", symbols[0]);
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case UNUSED_PARAMETER:
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CHECK_SYMBOLS(2);
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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]);
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case UNUSED_SIGNAL:
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CHECK_SYMBOLS(1);
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return vformat(R"(The signal "%s" is declared but never explicitly used in the class.)", symbols[0]);
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case SHADOWED_VARIABLE:
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CHECK_SYMBOLS(4);
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return vformat(R"(The local %s "%s" is shadowing an already-declared %s at line %s.)", symbols[0], symbols[1], symbols[2], symbols[3]);
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case SHADOWED_VARIABLE_BASE_CLASS:
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CHECK_SYMBOLS(4);
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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]);
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case SHADOWED_GLOBAL_IDENTIFIER:
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CHECK_SYMBOLS(3);
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return vformat(R"(The %s "%s" has the same name as a %s.)", symbols[0], symbols[1], symbols[2]);
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case UNREACHABLE_CODE:
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CHECK_SYMBOLS(1);
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return vformat(R"*(Unreachable code (statement after return) in function "%s()".)*", symbols[0]);
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case UNREACHABLE_PATTERN:
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return "Unreachable pattern (pattern after wildcard or bind).";
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case STANDALONE_EXPRESSION:
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return "Standalone expression (the line has no effect).";
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case STANDALONE_TERNARY:
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return "Standalone ternary operator: the return value is being discarded.";
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case INCOMPATIBLE_TERNARY:
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return "Values of the ternary operator are not mutually compatible.";
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case UNTYPED_DECLARATION:
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CHECK_SYMBOLS(2);
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if (symbols[0] == "Function") {
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return vformat(R"*(%s "%s()" has no static return type.)*", symbols[0], symbols[1]);
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}
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return vformat(R"(%s "%s" has no static type.)", symbols[0], symbols[1]);
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case INFERRED_DECLARATION:
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CHECK_SYMBOLS(2);
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return vformat(R"(%s "%s" has an implicitly inferred static type.)", symbols[0], symbols[1]);
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case UNSAFE_PROPERTY_ACCESS:
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CHECK_SYMBOLS(2);
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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]);
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case UNSAFE_METHOD_ACCESS:
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CHECK_SYMBOLS(2);
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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]);
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case UNSAFE_CAST:
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CHECK_SYMBOLS(1);
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return vformat(R"(The value is cast to "%s" but has an unknown type.)", symbols[0]);
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case UNSAFE_CALL_ARGUMENT:
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CHECK_SYMBOLS(5);
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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]);
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case UNSAFE_VOID_RETURN:
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CHECK_SYMBOLS(2);
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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]);
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case RETURN_VALUE_DISCARDED:
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CHECK_SYMBOLS(1);
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return vformat(R"*(The function "%s()" returns a value that will be discarded if not used.)*", symbols[0]);
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case STATIC_CALLED_ON_INSTANCE:
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CHECK_SYMBOLS(2);
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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]);
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case REDUNDANT_STATIC_UNLOAD:
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return R"(The "@static_unload" annotation is redundant because the file does not have a class with static variables.)";
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case REDUNDANT_AWAIT:
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return R"("await" keyword not needed in this case, because the expression isn't a coroutine nor a signal.)";
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case ASSERT_ALWAYS_TRUE:
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return "Assert statement is redundant because the expression is always true.";
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case ASSERT_ALWAYS_FALSE:
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return "Assert statement will raise an error because the expression is always false.";
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case INTEGER_DIVISION:
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return "Integer division, decimal part will be discarded.";
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case NARROWING_CONVERSION:
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return "Narrowing conversion (float is converted to int and loses precision).";
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case INT_AS_ENUM_WITHOUT_CAST:
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return "Integer used when an enum value is expected. If this is intended cast the integer to the enum type.";
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case INT_AS_ENUM_WITHOUT_MATCH:
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CHECK_SYMBOLS(3);
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return vformat(R"(Cannot %s %s as Enum "%s": no enum member has matching value.)", symbols[0], symbols[1], symbols[2]);
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case EMPTY_FILE:
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return "Empty script file.";
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case DEPRECATED_KEYWORD:
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CHECK_SYMBOLS(2);
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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]);
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case RENAMED_IN_GODOT_4_HINT:
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break; // Renamed identifier hint is taken care of by the GDScriptAnalyzer. No message needed here.
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case CONFUSABLE_IDENTIFIER:
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CHECK_SYMBOLS(1);
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return vformat(R"(The identifier "%s" has misleading characters and might be confused with something else.)", symbols[0]);
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case CONFUSABLE_LOCAL_DECLARATION:
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CHECK_SYMBOLS(2);
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return vformat(R"(The %s "%s" is declared below in the parent block.)", symbols[0], symbols[1]);
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case CONFUSABLE_LOCAL_USAGE:
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CHECK_SYMBOLS(1);
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return vformat(R"(The identifier "%s" will be shadowed below in the block.)", symbols[0]);
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case INFERENCE_ON_VARIANT:
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CHECK_SYMBOLS(1);
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return vformat("The %s type is being inferred from a Variant value, so it will be typed as Variant.", symbols[0]);
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case NATIVE_METHOD_OVERRIDE:
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CHECK_SYMBOLS(2);
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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]);
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case GET_NODE_DEFAULT_WITHOUT_ONREADY:
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CHECK_SYMBOLS(1);
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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]);
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case ONREADY_WITH_EXPORT:
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return R"("@onready" will set the default value after "@export" takes effect and will override it.)";
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#ifndef DISABLE_DEPRECATED
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// Never produced. These warnings migrated from 3.x by mistake.
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case PROPERTY_USED_AS_FUNCTION: // There is already an error.
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case CONSTANT_USED_AS_FUNCTION: // There is already an error.
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case FUNCTION_USED_AS_PROPERTY: // This is valid, returns `Callable`.
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break;
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#endif
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case WARNING_MAX:
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break; // Can't happen, but silences warning.
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}
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ERR_FAIL_V_MSG(String(), vformat(R"(Invalid GDScript warning "%s".)", get_name_from_code(code)));
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#undef CHECK_SYMBOLS
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}
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int GDScriptWarning::get_default_value(Code p_code) {
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ERR_FAIL_INDEX_V_MSG(p_code, WARNING_MAX, WarnLevel::IGNORE, "Getting default value of invalid warning code.");
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return default_warning_levels[p_code];
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}
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PropertyInfo GDScriptWarning::get_property_info(Code p_code) {
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// Making this a separate function in case a warning needs different PropertyInfo in the future.
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if (p_code == Code::RENAMED_IN_GODOT_4_HINT) {
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return PropertyInfo(Variant::BOOL, get_settings_path_from_code(p_code));
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}
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return PropertyInfo(Variant::INT, get_settings_path_from_code(p_code), PROPERTY_HINT_ENUM, "Ignore,Warn,Error");
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}
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String GDScriptWarning::get_name() const {
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return get_name_from_code(code);
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}
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String GDScriptWarning::get_name_from_code(Code p_code) {
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ERR_FAIL_COND_V(p_code < 0 || p_code >= WARNING_MAX, String());
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static const char *names[] = {
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"UNASSIGNED_VARIABLE",
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"UNASSIGNED_VARIABLE_OP_ASSIGN",
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"UNUSED_VARIABLE",
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"UNUSED_LOCAL_CONSTANT",
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"UNUSED_PRIVATE_CLASS_VARIABLE",
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"UNUSED_PARAMETER",
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"UNUSED_SIGNAL",
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"SHADOWED_VARIABLE",
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"SHADOWED_VARIABLE_BASE_CLASS",
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"SHADOWED_GLOBAL_IDENTIFIER",
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"UNREACHABLE_CODE",
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"UNREACHABLE_PATTERN",
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"STANDALONE_EXPRESSION",
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"STANDALONE_TERNARY",
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"INCOMPATIBLE_TERNARY",
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"UNTYPED_DECLARATION",
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"INFERRED_DECLARATION",
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"UNSAFE_PROPERTY_ACCESS",
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"UNSAFE_METHOD_ACCESS",
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"UNSAFE_CAST",
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"UNSAFE_CALL_ARGUMENT",
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"UNSAFE_VOID_RETURN",
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"RETURN_VALUE_DISCARDED",
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"STATIC_CALLED_ON_INSTANCE",
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"REDUNDANT_STATIC_UNLOAD",
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"REDUNDANT_AWAIT",
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"ASSERT_ALWAYS_TRUE",
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"ASSERT_ALWAYS_FALSE",
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"INTEGER_DIVISION",
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"NARROWING_CONVERSION",
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"INT_AS_ENUM_WITHOUT_CAST",
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"INT_AS_ENUM_WITHOUT_MATCH",
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"EMPTY_FILE",
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"DEPRECATED_KEYWORD",
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"RENAMED_IN_GODOT_4_HINT",
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"CONFUSABLE_IDENTIFIER",
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"CONFUSABLE_LOCAL_DECLARATION",
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"CONFUSABLE_LOCAL_USAGE",
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"INFERENCE_ON_VARIANT",
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"NATIVE_METHOD_OVERRIDE",
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"GET_NODE_DEFAULT_WITHOUT_ONREADY",
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"ONREADY_WITH_EXPORT",
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#ifndef DISABLE_DEPRECATED
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"PROPERTY_USED_AS_FUNCTION",
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"CONSTANT_USED_AS_FUNCTION",
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"FUNCTION_USED_AS_PROPERTY",
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#endif
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};
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static_assert((sizeof(names) / sizeof(*names)) == WARNING_MAX, "Amount of warning types don't match the amount of warning names.");
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return names[(int)p_code];
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}
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String GDScriptWarning::get_settings_path_from_code(Code p_code) {
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return "debug/gdscript/warnings/" + get_name_from_code(p_code).to_lower();
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}
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GDScriptWarning::Code GDScriptWarning::get_code_from_name(const String &p_name) {
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for (int i = 0; i < WARNING_MAX; i++) {
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if (get_name_from_code((Code)i) == p_name) {
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return (Code)i;
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}
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}
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return WARNING_MAX;
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}
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#endif // DEBUG_ENABLED
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