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platform_build/tools/warn/cpp_warn_patterns.py
Chih-Hung Hsieh 98b285dafb Fix/suppress most pylint and gpylint warnings 
* Add missing function doc strings.
  Suppress this warning on trivial functions in *_warn_patterns.py.
* Remove unused g-importing-memeber, g-complex-comprehension.
* Suppress pylint warning on unrecognized g-* options.
* Suppress too-few-public-methods warnings on simple classes.
* Suppress too-many-arguments and missing-function-docstring in
  html_writer.py, which will be refactored later.
* Fix bad naming, long lines and line breaks, and bad quotes.

Test: compare output for build.log
Change-Id: Icdb34f014a10ec1e642c2cfe8003fc3ae245b507
2021-04-28 14:57:56 -07:00

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# python3
# Copyright (C) 2019 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Warning patterns for C/C++ compiler, but not clang-tidy."""
# No need of doc strings for trivial small functions.
# pylint:disable=missing-function-docstring
import re
# pylint:disable=relative-beyond-top-level
from .severity import Severity
def cpp_warn(severity, description, pattern_list):
return {
'category': 'C/C++',
'severity': severity,
'description': description,
'patterns': pattern_list
}
def fixmenow(description, pattern_list):
return cpp_warn(Severity.FIXMENOW, description, pattern_list)
def high(description, pattern_list):
return cpp_warn(Severity.HIGH, description, pattern_list)
def medium(description, pattern_list):
return cpp_warn(Severity.MEDIUM, description, pattern_list)
def low(description, pattern_list):
return cpp_warn(Severity.LOW, description, pattern_list)
def skip(description, pattern_list):
return cpp_warn(Severity.SKIP, description, pattern_list)
def harmless(description, pattern_list):
return cpp_warn(Severity.HARMLESS, description, pattern_list)
warn_patterns = [
# pylint does not recognize g-inconsistent-quotes
# pylint:disable=line-too-long,bad-option-value,g-inconsistent-quotes
medium('Implicit function declaration',
[r".*: warning: implicit declaration of function .+",
r".*: warning: implicitly declaring library function"]),
skip('skip, conflicting types for ...',
[r".*: warning: conflicting types for '.+'"]),
high('Expression always evaluates to true or false',
[r".*: warning: comparison is always .+ due to limited range of data type",
r".*: warning: comparison of unsigned .*expression .+ is always true",
r".*: warning: comparison of unsigned .*expression .+ is always false"]),
high('Use transient memory for control value',
[r".*: warning: .+Using such transient memory for the control value is .*dangerous."]),
high('Return address of stack memory',
[r".*: warning: Address of stack memory .+ returned to caller",
r".*: warning: Address of stack memory .+ will be a dangling reference"]),
high('Infinite recursion',
[r".*: warning: all paths through this function will call itself"]),
high('Potential buffer overflow',
[r".*: warning: Size argument is greater than .+ the destination buffer",
r".*: warning: Potential buffer overflow.",
r".*: warning: String copy function overflows destination buffer"]),
medium('Incompatible pointer types',
[r".*: warning: assignment from incompatible pointer type",
r".*: warning: return from incompatible pointer type",
r".*: warning: passing argument [0-9]+ of '.*' from incompatible pointer type",
r".*: warning: initialization from incompatible pointer type"]),
high('Incompatible declaration of built in function',
[r".*: warning: incompatible implicit declaration of built-in function .+"]),
high('Incompatible redeclaration of library function',
[r".*: warning: incompatible redeclaration of library function .+"]),
high('Null passed as non-null argument',
[r".*: warning: Null passed to a callee that requires a non-null"]),
medium('Unused parameter',
[r".*: warning: unused parameter '.*'"]),
medium('Unused function, variable, label, comparison, etc.',
[r".*: warning: '.+' defined but not used",
r".*: warning: unused function '.+'",
r".*: warning: unused label '.+'",
r".*: warning: relational comparison result unused",
r".*: warning: lambda capture .* is not used",
r".*: warning: private field '.+' is not used",
r".*: warning: unused variable '.+'"]),
medium('Statement with no effect or result unused',
[r".*: warning: statement with no effect",
r".*: warning: expression result unused"]),
medium('Ignoreing return value of function',
[r".*: warning: ignoring return value of function .+Wunused-result"]),
medium('Missing initializer',
[r".*: warning: missing initializer"]),
medium('Need virtual destructor',
[r".*: warning: delete called .* has virtual functions but non-virtual destructor"]),
skip('skip, near initialization for ...',
[r".*: warning: \(near initialization for '.+'\)"]),
medium('Expansion of data or time macro',
[r".*: warning: expansion of date or time macro is not reproducible"]),
medium('Macro expansion has undefined behavior',
[r".*: warning: macro expansion .* has undefined behavior"]),
medium('Format string does not match arguments',
[r".*: warning: format '.+' expects type '.+', but argument [0-9]+ has type '.+'",
r".*: warning: more '%' conversions than data arguments",
r".*: warning: data argument not used by format string",
r".*: warning: incomplete format specifier",
r".*: warning: unknown conversion type .* in format",
r".*: warning: format .+ expects .+ but argument .+Wformat=",
r".*: warning: field precision should have .+ but argument has .+Wformat",
r".*: warning: format specifies type .+ but the argument has .*type .+Wformat"]),
medium('Too many arguments for format string',
[r".*: warning: too many arguments for format"]),
medium('Too many arguments in call',
[r".*: warning: too many arguments in call to "]),
medium('Invalid format specifier',
[r".*: warning: invalid .+ specifier '.+'.+format-invalid-specifier"]),
medium('Comparison between signed and unsigned',
[r".*: warning: comparison between signed and unsigned",
r".*: warning: comparison of promoted \~unsigned with unsigned",
r".*: warning: signed and unsigned type in conditional expression"]),
medium('Comparison between enum and non-enum',
[r".*: warning: enumeral and non-enumeral type in conditional expression"]),
medium('libpng: zero area',
[r".*libpng warning: Ignoring attempt to set cHRM RGB triangle with zero area"]),
medium('Missing braces around initializer',
[r".*: warning: missing braces around initializer.*"]),
harmless('No newline at end of file',
[r".*: warning: no newline at end of file"]),
harmless('Missing space after macro name',
[r".*: warning: missing whitespace after the macro name"]),
low('Cast increases required alignment',
[r".*: warning: cast from .* to .* increases required alignment .*"]),
medium('Qualifier discarded',
[r".*: warning: passing argument [0-9]+ of '.+' discards qualifiers from pointer target type",
r".*: warning: assignment discards qualifiers from pointer target type",
r".*: warning: passing .+ to parameter of type .+ discards qualifiers",
r".*: warning: assigning to .+ from .+ discards qualifiers",
r".*: warning: initializing .+ discards qualifiers .+types-discards-qualifiers",
r".*: warning: return discards qualifiers from pointer target type"]),
medium('Unknown attribute',
[r".*: warning: unknown attribute '.+'"]),
medium('Attribute ignored',
[r".*: warning: '_*packed_*' attribute ignored",
r".*: warning: .* not supported .*Wignored-attributes",
r".*: warning: attribute declaration must precede definition .+ignored-attributes"]),
medium('Visibility problem',
[r".*: warning: declaration of '.+' will not be visible outside of this function"]),
medium('Visibility mismatch',
[r".*: warning: '.+' declared with greater visibility than the type of its field '.+'"]),
medium('Shift count greater than width of type',
[r".*: warning: (left|right) shift count >= width of type"]),
medium('extern <foo> is initialized',
[r".*: warning: '.+' initialized and declared 'extern'",
r".*: warning: 'extern' variable has an initializer"]),
medium('Old style declaration',
[r".*: warning: 'static' is not at beginning of declaration"]),
medium('Missing return value',
[r".*: warning: control reaches end of non-void function"]),
medium('Implicit int type',
[r".*: warning: type specifier missing, defaults to 'int'",
r".*: warning: type defaults to 'int' in declaration of '.+'"]),
medium('Main function should return int',
[r".*: warning: return type of 'main' is not 'int'"]),
medium('Variable may be used uninitialized',
[r".*: warning: '.+' may be used uninitialized in this function"]),
high('Variable is used uninitialized',
[r".*: warning: '.+' is used uninitialized in this function",
r".*: warning: variable '.+' is uninitialized when used here"]),
medium('ld: possible enum size mismatch',
[r".*: warning: .* uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail"]),
medium('Pointer targets differ in signedness',
[r".*: warning: pointer targets in initialization differ in signedness",
r".*: warning: pointer targets in assignment differ in signedness",
r".*: warning: pointer targets in return differ in signedness",
r".*: warning: pointer targets in passing argument [0-9]+ of '.+' differ in signedness"]),
medium('Assuming overflow does not occur',
[r".*: warning: assuming signed overflow does not occur when assuming that .* is always (true|false)"]),
medium('Suggest adding braces around empty body',
[r".*: warning: suggest braces around empty body in an 'if' statement",
r".*: warning: empty body in an if-statement",
r".*: warning: suggest braces around empty body in an 'else' statement",
r".*: warning: empty body in an else-statement"]),
medium('Suggest adding parentheses',
[r".*: warning: suggest explicit braces to avoid ambiguous 'else'",
r".*: warning: suggest parentheses around arithmetic in operand of '.+'",
r".*: warning: suggest parentheses around comparison in operand of '.+'",
r".*: warning: logical not is only applied to the left hand side of this comparison",
r".*: warning: using the result of an assignment as a condition without parentheses",
r".*: warning: .+ has lower precedence than .+ be evaluated first .+Wparentheses",
r".*: warning: suggest parentheses around '.+?' .+ '.+?'",
r".*: warning: suggest parentheses around assignment used as truth value"]),
medium('Static variable used in non-static inline function',
[r".*: warning: '.+' is static but used in inline function '.+' which is not static"]),
medium('No type or storage class (will default to int)',
[r".*: warning: data definition has no type or storage class"]),
skip('skip, parameter name (without types) in function declaration',
[r".*: warning: parameter names \(without types\) in function declaration"]),
medium('Dereferencing <foo> breaks strict aliasing rules',
[r".*: warning: dereferencing .* break strict-aliasing rules"]),
medium('Cast from pointer to integer of different size',
[r".*: warning: cast from pointer to integer of different size",
r".*: warning: initialization makes pointer from integer without a cast"]),
medium('Cast to pointer from integer of different size',
[r".*: warning: cast to pointer from integer of different size"]),
medium('Macro redefined',
[r".*: warning: '.+' macro redefined"]),
skip('skip, ... location of the previous definition',
[r".*: warning: this is the location of the previous definition"]),
medium('ld: type and size of dynamic symbol are not defined',
[r".*: warning: type and size of dynamic symbol `.+' are not defined"]),
medium('Pointer from integer without cast',
[r".*: warning: assignment makes pointer from integer without a cast"]),
medium('Pointer from integer without cast',
[r".*: warning: passing argument [0-9]+ of '.+' makes pointer from integer without a cast"]),
medium('Integer from pointer without cast',
[r".*: warning: assignment makes integer from pointer without a cast"]),
medium('Integer from pointer without cast',
[r".*: warning: passing argument [0-9]+ of '.+' makes integer from pointer without a cast"]),
medium('Integer from pointer without cast',
[r".*: warning: return makes integer from pointer without a cast"]),
medium('Ignoring pragma',
[r".*: warning: ignoring #pragma .+"]),
medium('Pragma warning messages',
[r".*: warning: .+W#pragma-messages"]),
medium('Variable might be clobbered by longjmp or vfork',
[r".*: warning: variable '.+' might be clobbered by 'longjmp' or 'vfork'"]),
medium('Argument might be clobbered by longjmp or vfork',
[r".*: warning: argument '.+' might be clobbered by 'longjmp' or 'vfork'"]),
medium('Redundant declaration',
[r".*: warning: redundant redeclaration of '.+'"]),
skip('skip, previous declaration ... was here',
[r".*: warning: previous declaration of '.+' was here"]),
high('Enum value not handled in switch',
[r".*: warning: .*enumeration value.* not handled in switch.+Wswitch"]),
medium('User defined warnings',
[r".*: warning: .* \[-Wuser-defined-warnings\]$"]),
medium('Taking address of temporary',
[r".*: warning: taking address of temporary"]),
medium('Taking address of packed member',
[r".*: warning: taking address of packed member"]),
medium('Pack alignment value is modified',
[r".*: warning: .*#pragma pack alignment value is modified.*Wpragma-pack.*"]),
medium('Possible broken line continuation',
[r".*: warning: backslash and newline separated by space"]),
medium('Undefined variable template',
[r".*: warning: instantiation of variable .* no definition is available"]),
medium('Inline function is not defined',
[r".*: warning: inline function '.*' is not defined"]),
medium('Excess elements in initializer',
[r".*: warning: excess elements in .+ initializer"]),
medium('Decimal constant is unsigned only in ISO C90',
[r".*: warning: this decimal constant is unsigned only in ISO C90"]),
medium('main is usually a function',
[r".*: warning: 'main' is usually a function"]),
medium('Typedef ignored',
[r".*: warning: 'typedef' was ignored in this declaration"]),
high('Address always evaluates to true',
[r".*: warning: the address of '.+' will always evaluate as 'true'"]),
fixmenow('Freeing a non-heap object',
[r".*: warning: attempt to free a non-heap object '.+'"]),
medium('Array subscript has type char',
[r".*: warning: array subscript .+ type 'char'.+Wchar-subscripts"]),
medium('Constant too large for type',
[r".*: warning: integer constant is too large for '.+' type"]),
medium('Constant too large for type, truncated',
[r".*: warning: large integer implicitly truncated to unsigned type"]),
medium('Overflow in expression',
[r".*: warning: overflow in expression; .*Winteger-overflow"]),
medium('Overflow in implicit constant conversion',
[r".*: warning: overflow in implicit constant conversion"]),
medium('Declaration does not declare anything',
[r".*: warning: declaration 'class .+' does not declare anything"]),
medium('Initialization order will be different',
[r".*: warning: '.+' will be initialized after",
r".*: warning: field .+ will be initialized after .+Wreorder"]),
skip('skip, ....',
[r".*: warning: '.+'"]),
skip('skip, base ...',
[r".*: warning: base '.+'"]),
skip('skip, when initialized here',
[r".*: warning: when initialized here"]),
medium('Parameter type not specified',
[r".*: warning: type of '.+' defaults to 'int'"]),
medium('Missing declarations',
[r".*: warning: declaration does not declare anything"]),
medium('Missing noreturn',
[r".*: warning: function '.*' could be declared with attribute 'noreturn'"]),
medium('User warning',
[r".*: warning: #warning \".+\""]),
medium('Vexing parsing problem',
[r".*: warning: empty parentheses interpreted as a function declaration"]),
medium('Dereferencing void*',
[r".*: warning: dereferencing 'void \*' pointer"]),
medium('Comparison of pointer and integer',
[r".*: warning: ordered comparison of pointer with integer zero",
r".*: warning: .*comparison between pointer and integer"]),
medium('Use of error-prone unary operator',
[r".*: warning: use of unary operator that may be intended as compound assignment"]),
medium('Conversion of string constant to non-const char*',
[r".*: warning: deprecated conversion from string constant to '.+'"]),
medium('Function declaration isn''t a prototype',
[r".*: warning: function declaration isn't a prototype"]),
medium('Type qualifiers ignored on function return value',
[r".*: warning: type qualifiers ignored on function return type",
r".*: warning: .+ type qualifier .+ has no effect .+Wignored-qualifiers"]),
medium('<foo> declared inside parameter list, scope limited to this definition',
[r".*: warning: '.+' declared inside parameter list"]),
skip('skip, its scope is only this ...',
[r".*: warning: its scope is only this definition or declaration, which is probably not what you want"]),
low('Line continuation inside comment',
[r".*: warning: multi-line comment"]),
low('Comment inside comment',
[r".*: warning: '.+' within block comment .*-Wcomment"]),
low('Deprecated declarations',
[r".*: warning: .+ is deprecated.+deprecated-declarations"]),
low('Deprecated register',
[r".*: warning: 'register' storage class specifier is deprecated"]),
low('Converts between pointers to integer types with different sign',
[r".*: warning: .+ converts between pointers to integer types with different sign"]),
harmless('Extra tokens after #endif',
[r".*: warning: extra tokens at end of #endif directive"]),
medium('Comparison between different enums',
[r".*: warning: comparison between '.+' and '.+'.+Wenum-compare",
r".*: warning: comparison of .* enumeration types .*-Wenum-compare.*"]),
medium('Conversion may change value',
[r".*: warning: converting negative value '.+' to '.+'",
r".*: warning: conversion to '.+' .+ may (alter|change)"]),
medium('Converting to non-pointer type from NULL',
[r".*: warning: converting to non-pointer type '.+' from NULL"]),
medium('Implicit sign conversion',
[r".*: warning: implicit conversion changes signedness"]),
medium('Converting NULL to non-pointer type',
[r".*: warning: implicit conversion of NULL constant to '.+'"]),
medium('Zero used as null pointer',
[r".*: warning: expression .* zero treated as a null pointer constant"]),
medium('Compare pointer to null character',
[r".*: warning: comparing a pointer to a null character constant"]),
medium('Implicit conversion changes value or loses precision',
[r".*: warning: implicit conversion .* changes value from .* to .*-conversion",
r".*: warning: implicit conversion loses integer precision:"]),
medium('Passing NULL as non-pointer argument',
[r".*: warning: passing NULL to non-pointer argument [0-9]+ of '.+'"]),
medium('Class seems unusable because of private ctor/dtor',
[r".*: warning: all member functions in class '.+' are private"]),
# skip this next one, because it only points out some RefBase-based classes
# where having a private destructor is perfectly fine
skip('Class seems unusable because of private ctor/dtor',
[r".*: warning: 'class .+' only defines a private destructor and has no friends"]),
medium('Class seems unusable because of private ctor/dtor',
[r".*: warning: 'class .+' only defines private constructors and has no friends"]),
medium('In-class initializer for static const float/double',
[r".*: warning: in-class initializer for static data member of .+const (float|double)"]),
medium('void* used in arithmetic',
[r".*: warning: pointer of type 'void \*' used in (arithmetic|subtraction)",
r".*: warning: arithmetic on .+ to void is a GNU extension.*Wpointer-arith",
r".*: warning: wrong type argument to increment"]),
medium('Overload resolution chose to promote from unsigned or enum to signed type',
[r".*: warning: passing '.+' chooses '.+' over '.+'.*Wsign-promo"]),
skip('skip, in call to ...',
[r".*: warning: in call to '.+'"]),
high('Base should be explicitly initialized in copy constructor',
[r".*: warning: base class '.+' should be explicitly initialized in the copy constructor"]),
medium('Return value from void function',
[r".*: warning: 'return' with a value, in function returning void"]),
medium('Multi-character character constant',
[r".*: warning: multi-character character constant"]),
medium('Conversion from string literal to char*',
[r".*: warning: .+ does not allow conversion from string literal to 'char \*'"]),
low('Extra \';\'',
[r".*: warning: extra ';' .+extra-semi"]),
low('Useless specifier',
[r".*: warning: useless storage class specifier in empty declaration"]),
low('Duplicate declaration specifier',
[r".*: warning: duplicate '.+' declaration specifier"]),
low('Comparison of self is always false',
[r".*: self-comparison always evaluates to false"]),
low('Logical op with constant operand',
[r".*: use of logical '.+' with constant operand"]),
low('Needs a space between literal and string macro',
[r".*: warning: invalid suffix on literal.+ requires a space .+Wliteral-suffix"]),
low('Warnings from #warning',
[r".*: warning: .+-W#warnings"]),
low('Using float/int absolute value function with int/float argument',
[r".*: warning: using .+ absolute value function .+ when argument is .+ type .+Wabsolute-value",
r".*: warning: absolute value function '.+' given .+ which may cause truncation .+Wabsolute-value"]),
low('Using C++11 extensions',
[r".*: warning: 'auto' type specifier is a C\+\+11 extension"]),
low('Using C++17 extensions',
[r".*: warning: .* a C\+\+17 extension .+Wc\+\+17-extensions"]),
low('Refers to implicitly defined namespace',
[r".*: warning: using directive refers to implicitly-defined namespace .+"]),
low('Invalid pp token',
[r".*: warning: missing .+Winvalid-pp-token"]),
low('need glibc to link',
[r".*: warning: .* requires at runtime .* glibc .* for linking"]),
medium('Operator new returns NULL',
[r".*: warning: 'operator new' must not return NULL unless it is declared 'throw\(\)' .+"]),
medium('NULL used in arithmetic',
[r".*: warning: NULL used in arithmetic",
r".*: warning: comparison between NULL and non-pointer"]),
medium('Misspelled header guard',
[r".*: warning: '.+' is used as a header guard .+ followed by .+ different macro"]),
medium('Empty loop body',
[r".*: warning: .+ loop has empty body"]),
medium('Implicit conversion from enumeration type',
[r".*: warning: implicit conversion from enumeration type '.+'"]),
medium('case value not in enumerated type',
[r".*: warning: case value not in enumerated type '.+'"]),
medium('Use of deprecated method',
[r".*: warning: '.+' is deprecated .+"]),
medium('Use of garbage or uninitialized value',
[r".*: warning: .+ uninitialized .+\[-Wsometimes-uninitialized\]"]),
medium('Sizeof on array argument',
[r".*: warning: sizeof on array function parameter will return"]),
medium('Bad argument size of memory access functions',
[r".*: warning: .+\[-Wsizeof-pointer-memaccess\]"]),
medium('Return value not checked',
[r".*: warning: The return value from .+ is not checked"]),
medium('Possible heap pollution',
[r".*: warning: .*Possible heap pollution from .+ type .+"]),
medium('Variable used in loop condition not modified in loop body',
[r".*: warning: variable '.+' used in loop condition.*Wfor-loop-analysis"]),
medium('Closing a previously closed file',
[r".*: warning: Closing a previously closed file"]),
medium('Unnamed template type argument',
[r".*: warning: template argument.+Wunnamed-type-template-args"]),
medium('Unannotated fall-through between switch labels',
[r".*: warning: unannotated fall-through between switch labels.+Wimplicit-fallthrough"]),
medium('Invalid partial specialization',
[r".*: warning: class template partial specialization.+Winvalid-partial-specialization"]),
medium('Overlapping comparisons',
[r".*: warning: overlapping comparisons.+Wtautological-overlap-compare"]),
medium('bitwise comparison',
[r".*: warning: bitwise comparison.+Wtautological-bitwise-compare"]),
medium('int in bool context',
[r".*: warning: converting.+to a boolean.+Wint-in-bool-context"]),
medium('bitwise conditional parentheses',
[r".*: warning: operator.+has lower precedence.+Wbitwise-conditional-parentheses"]),
medium('sizeof array div',
[r".*: warning: .+number of elements in.+array.+Wsizeof-array-div"]),
medium('bool operation',
[r".*: warning: .+boolean.+always.+Wbool-operation"]),
medium('Undefined bool conversion',
[r".*: warning: .+may be.+always.+true.+Wundefined-bool-conversion"]),
medium('Typedef requires a name',
[r".*: warning: typedef requires a name.+Wmissing-declaration"]),
medium('Unknown escape sequence',
[r".*: warning: unknown escape sequence.+Wunknown-escape-sequence"]),
medium('Unicode whitespace',
[r".*: warning: treating Unicode.+as whitespace.+Wunicode-whitespace"]),
medium('Unused local typedef',
[r".*: warning: unused typedef.+Wunused-local-typedef"]),
medium('varargs warnings',
[r".*: warning: .*argument to 'va_start'.+\[-Wvarargs\]"]),
harmless('Discarded qualifier from pointer target type',
[r".*: warning: .+ discards '.+' qualifier from pointer target type"]),
harmless('Use snprintf instead of sprintf',
[r".*: warning: .*sprintf is often misused; please use snprintf"]),
harmless('Unsupported optimizaton flag',
[r".*: warning: optimization flag '.+' is not supported"]),
harmless('Extra or missing parentheses',
[r".*: warning: equality comparison with extraneous parentheses",
r".*: warning: .+ within .+Wlogical-op-parentheses"]),
harmless('Mismatched class vs struct tags',
[r".*: warning: '.+' defined as a .+ here but previously declared as a .+mismatched-tags",
r".*: warning: .+ was previously declared as a .+mismatched-tags"]),
]
def compile_patterns(patterns):
"""Precompiling every pattern speeds up parsing by about 30x."""
for i in patterns:
i['compiled_patterns'] = []
for pat in i['patterns']:
i['compiled_patterns'].append(re.compile(pat))
compile_patterns(warn_patterns)
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