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godot/modules/gdscript/gdscript_warning.cpp

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One Copyright Update to rule them all As many open source projects have started doing it, we're removing the current year from the copyright notice, so that we don't need to bump it every year. It seems like only the first year of publication is technically relevant for copyright notices, and even that seems to be something that many companies stopped listing altogether (in a version controlled codebase, the commits are a much better source of date of publication than a hardcoded copyright statement). We also now list Godot Engine contributors first as we're collectively the current maintainers of the project, and we clarify that the "exclusive" copyright of the co-founders covers the timespan before opensourcing (their further contributions are included as part of Godot Engine contributors). Also fixed "cf." Frenchism - it's meant as "refer to / see".
2023-01-05 12:25:55 +00:00
/**************************************************************************/
/* 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. */
/**************************************************************************/
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
#include "gdscript_warning.h"
Reorganized core/ directory, it was too fatty already -Removed FuncRef, since Callable makes it obsolete -Removed int_types.h as its obsolete in c++11+ -Changed color names code
2020-11-07 22:33:38 +00:00
#include "core/variant/variant.h"
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
#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_OP_ASSIGN: {
CHECK_SYMBOLS(1);
return "Using assignment with operation but the variable '" + symbols[0] + "' was not previously assigned a value.";
} break;
case UNASSIGNED_VARIABLE: {
CHECK_SYMBOLS(1);
return "The variable '" + symbols[0] + "' was used but never assigned a value.";
} break;
case UNUSED_VARIABLE: {
CHECK_SYMBOLS(1);
return "The local variable '" + symbols[0] + "' is declared but never used in the block. If this is intended, prefix it with an underscore: '_" + symbols[0] + "'";
} break;
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
case UNUSED_LOCAL_CONSTANT: {
CHECK_SYMBOLS(1);
return "The local constant '" + symbols[0] + "' is declared but never used in the block. If this is intended, prefix it with an underscore: '_" + symbols[0] + "'";
} break;
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
case SHADOWED_VARIABLE: {
Add warning checks in GDScript analyzer Reenable checking those when validating code.
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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]);
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
} break;
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
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]);
} break;
case UNUSED_PRIVATE_CLASS_VARIABLE: {
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
CHECK_SYMBOLS(1);
return "The class variable '" + symbols[0] + "' is declared but never used in the script.";
} break;
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
case UNUSED_PARAMETER: {
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
CHECK_SYMBOLS(2);
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
return "The parameter '" + symbols[1] + "' is never used in the function '" + symbols[0] + "'. If this is intended, prefix it with an underscore: '_" + symbols[1] + "'";
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
} break;
case UNREACHABLE_CODE: {
CHECK_SYMBOLS(1);
return "Unreachable code (statement after return) in function '" + symbols[0] + "()'.";
} break;
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
case UNREACHABLE_PATTERN: {
return "Unreachable pattern (pattern after wildcard or bind).";
} break;
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
case STANDALONE_EXPRESSION: {
return "Standalone expression (the line has no effect).";
} break;
case NARROWING_CONVERSION: {
return "Narrowing conversion (float is converted to int and loses precision).";
} break;
case INCOMPATIBLE_TERNARY: {
return "Values of the ternary conditional are not mutually compatible.";
} break;
case UNUSED_SIGNAL: {
CHECK_SYMBOLS(1);
return "The signal '" + symbols[0] + "' is declared but never emitted.";
} break;
case RETURN_VALUE_DISCARDED: {
CHECK_SYMBOLS(1);
change RETURN_VALUE_DISCARDED GDScript warn text changed RETURN_VALUE_DISCARDED GDscript warning text to mention how the return value of a function is discarded; update GDScript parser warning test to include new warning text.
2022-11-20 03:16:54 +00:00
return "The function '" + symbols[0] + "()' returns a value that will be discarded if not used.";
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
} break;
case PROPERTY_USED_AS_FUNCTION: {
CHECK_SYMBOLS(2);
return "The method '" + symbols[0] + "()' was not found in base '" + symbols[1] + "' but there's a property with the same name. Did you mean to access it?";
} break;
case CONSTANT_USED_AS_FUNCTION: {
CHECK_SYMBOLS(2);
return "The method '" + symbols[0] + "()' was not found in base '" + symbols[1] + "' but there's a constant with the same name. Did you mean to access it?";
} break;
case FUNCTION_USED_AS_PROPERTY: {
CHECK_SYMBOLS(2);
return "The property '" + symbols[0] + "' was not found in base '" + symbols[1] + "' but there's a method with the same name. Did you mean to call it?";
} break;
case INTEGER_DIVISION: {
return "Integer division, decimal part will be discarded.";
} break;
case UNSAFE_PROPERTY_ACCESS: {
CHECK_SYMBOLS(2);
return "The property '" + symbols[0] + "' is not present on the inferred type '" + symbols[1] + "' (but may be present on a subtype).";
} break;
case UNSAFE_METHOD_ACCESS: {
CHECK_SYMBOLS(2);
return "The method '" + symbols[0] + "' is not present on the inferred type '" + symbols[1] + "' (but may be present on a subtype).";
} break;
case UNSAFE_CAST: {
CHECK_SYMBOLS(1);
return "The value is cast to '" + symbols[0] + "' but has an unknown type.";
} break;
case UNSAFE_CALL_ARGUMENT: {
CHECK_SYMBOLS(4);
return "The argument '" + symbols[0] + "' of the function '" + symbols[1] + "' requires a the subtype '" + symbols[2] + "' but the supertype '" + symbols[3] + "' was provided";
} break;
case DEPRECATED_KEYWORD: {
CHECK_SYMBOLS(2);
return "The '" + symbols[0] + "' keyword is deprecated and will be removed in a future release, please replace its uses by '" + symbols[1] + "'.";
} break;
case STANDALONE_TERNARY: {
return "Standalone ternary conditional operator: the return value is being discarded.";
}
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
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 REDUNDANT_AWAIT: {
return R"("await" keyword not needed in this case, because the expression isn't a coroutine nor a signal.)";
}
Fix error on parsing statement-less GDScript files, add an empty file warning, add relevant tests.
2021-09-11 18:38:15 +00:00
case EMPTY_FILE: {
return "Empty script file.";
}
Allow using built-in names for variables, push warnings instead
2021-11-13 15:40:53 +00:00
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]);
}
GDScript: Consolidate behavior for assigning enum types This makes sure that assigning values to enum-typed variables are consistent. Same enum is always valid, different enum is always invalid (without casting) and assigning `int` creates a warning if there is no casting. There are new test cases to ensure this behavior doesn't break in the future.
2022-01-27 14:34:33 +00:00
case INT_ASSIGNED_TO_ENUM: {
return "Integer used when an enum value is expected. If this is intended cast the integer to the enum type.";
}
Add STATIC_CALLED_ON_INSTANCE warning to highlight when static functions are called directly from objects
2022-10-13 19:42:11 +00:00
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]);
}
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
case WARNING_MAX:
break; // Can't happen, but silences warning
}
ERR_FAIL_V_MSG(String(), "Invalid GDScript warning code: " + get_name_from_code(code) + ".");
#undef CHECK_SYMBOLS
}
Add enum values (Ignore, Warn, Error) to GDScript warnings
2022-03-23 02:44:30 +00:00
int GDScriptWarning::get_default_value(Code p_code) {
if (get_name_from_code(p_code).to_lower().begins_with("unsafe_")) {
return WarnLevel::IGNORE;
}
GDScript: Don't warn about RETURN_VALUE_DISCARDED by default This happens too often with normal usage of the API. The warning can still be useful to find actual bugs where discarding the return value wasn't intentional, but this should stay enabled manually, at least until we either improve the API to remove false positives, or improve the warning (e.g. to only warn about unused return value on const functions).
2022-11-22 13:36:51 +00:00
// Too spammy by default on common cases (connect, Tween, etc.).
if (p_code == RETURN_VALUE_DISCARDED) {
return WarnLevel::IGNORE;
}
Add enum values (Ignore, Warn, Error) to GDScript warnings
2022-03-23 02:44:30 +00:00
return WarnLevel::WARN;
}
PropertyInfo GDScriptWarning::get_property_info(Code p_code) {
// Making this a separate function in case a warning needs different PropertyInfo in the future.
return PropertyInfo(Variant::INT, get_settings_path_from_code(p_code), PROPERTY_HINT_ENUM, "Ignore,Warn,Error");
}
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
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",
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
"UNUSED_LOCAL_CONSTANT",
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
"SHADOWED_VARIABLE",
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
"SHADOWED_VARIABLE_BASE_CLASS",
"UNUSED_PRIVATE_CLASS_VARIABLE",
"UNUSED_PARAMETER",
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
"UNREACHABLE_CODE",
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
"UNREACHABLE_PATTERN",
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
"STANDALONE_EXPRESSION",
"NARROWING_CONVERSION",
"INCOMPATIBLE_TERNARY",
"UNUSED_SIGNAL",
"RETURN_VALUE_DISCARDED",
"PROPERTY_USED_AS_FUNCTION",
"CONSTANT_USED_AS_FUNCTION",
"FUNCTION_USED_AS_PROPERTY",
"INTEGER_DIVISION",
"UNSAFE_PROPERTY_ACCESS",
"UNSAFE_METHOD_ACCESS",
"UNSAFE_CAST",
"UNSAFE_CALL_ARGUMENT",
"DEPRECATED_KEYWORD",
"STANDALONE_TERNARY",
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
"ASSERT_ALWAYS_TRUE",
"ASSERT_ALWAYS_FALSE",
"REDUNDANT_AWAIT",
Fix error on parsing statement-less GDScript files, add an empty file warning, add relevant tests.
2021-09-11 18:38:15 +00:00
"EMPTY_FILE",
Allow using built-in names for variables, push warnings instead
2021-11-13 15:40:53 +00:00
"SHADOWED_GLOBAL_IDENTIFIER",
GDScript: Consolidate behavior for assigning enum types This makes sure that assigning values to enum-typed variables are consistent. Same enum is always valid, different enum is always invalid (without casting) and assigning `int` creates a warning if there is no casting. There are new test cases to ensure this behavior doesn't break in the future.
2022-01-27 14:34:33 +00:00
"INT_ASSIGNED_TO_ENUM",
Add STATIC_CALLED_ON_INSTANCE warning to highlight when static functions are called directly from objects
2022-10-13 19:42:11 +00:00
"STATIC_CALLED_ON_INSTANCE",
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
};
Add warning checks in GDScript analyzer Reenable checking those when validating code.
2020-06-11 22:31:28 +00:00
static_assert((sizeof(names) / sizeof(*names)) == WARNING_MAX, "Amount of warning types don't match the amount of warning names.");
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
return names[(int)p_code];
}
Add enum values (Ignore, Warn, Error) to GDScript warnings
2022-03-23 02:44:30 +00:00
String GDScriptWarning::get_settings_path_from_code(Code p_code) {
return "debug/gdscript/warnings/" + get_name_from_code(p_code).to_lower();
}
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
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;
}
}
GDScript: Add annotation to ignore warnings
2022-01-04 12:32:43 +00:00
return WARNING_MAX;
New GDScript tokenizer and parser Sometimes to fix something you have to break it first. This get GDScript mostly working with the new tokenizer and parser but a lot of things isn't working yet. It compiles and it's usable, and that should be enough for now. Don't worry: other huge commits will come after this.
2020-05-01 22:14:56 +00:00
}
#endif // DEBUG_ENABLED
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