tools/warn.py

#!/usr/bin/python
# This file uses the following encoding: utf-8

"""Grep warnings messages and output HTML tables or warning counts in CSV.

Default is to output warnings in HTML tables grouped by warning severity.
Use option --byproject to output tables grouped by source file projects.
Use option --gencsv to output warning counts in CSV format.
"""

# List of important data structures and functions in this script.
#
# To parse and keep warning message in the input file:
#   severity:                classification of message severity
#   severity.range           [0, 1, ... last_severity_level]
#   severity.colors          for header background
#   severity.column_headers  for the warning count table
#   severity.headers         for warning message tables
#   warn_patterns:
#   warn_patterns[w]['category']     tool that issued the warning, not used now
#   warn_patterns[w]['description']  table heading
#   warn_patterns[w]['members']      matched warnings from input
#   warn_patterns[w]['option']       compiler flag to control the warning
#   warn_patterns[w]['patterns']     regular expressions to match warnings
#   warn_patterns[w]['projects'][p]  number of warnings of pattern w in p
#   warn_patterns[w]['severity']     severity level
#   project_list[p][0]               project name
#   project_list[p][1]               regular expression to match a project path
#   project_patterns[p]              re.compile(project_list[p][1])
#   project_names[p]                 project_list[p][0]
#   warning_messages     array of each warning message, without source url
#   warning_records      array of [idx to warn_patterns,
#                                  idx to project_names,
#                                  idx to warning_messages]
#   android_root
#   platform_version
#   target_product
#   target_variant
#   compile_patterns, parse_input_file
#
# To emit html page of warning messages:
#   flags: --byproject, --url, --separator
# Old stuff for static html components:
#   html_script_style:  static html scripts and styles
#   htmlbig:
#   dump_stats, dump_html_prologue, dump_html_epilogue:
#   emit_buttons:
#   dump_fixed
#   sort_warnings:
#   emit_stats_by_project:
#   all_patterns,
#   findproject, classify_warning
#   dump_html
#
# New dynamic HTML page's static JavaScript data:
#   Some data are copied from Python to JavaScript, to generate HTML elements.
#   FlagURL                args.url
#   FlagSeparator          args.separator
#   SeverityColors:        severity.colors
#   SeverityHeaders:       severity.headers
#   SeverityColumnHeaders: severity.column_headers
#   ProjectNames:          project_names, or project_list[*][0]
#   WarnPatternsSeverity:     warn_patterns[*]['severity']
#   WarnPatternsDescription:  warn_patterns[*]['description']
#   WarnPatternsOption:       warn_patterns[*]['option']
#   WarningMessages:          warning_messages
#   Warnings:                 warning_records
#   StatsHeader:           warning count table header row
#   StatsRows:             array of warning count table rows
#
# New dynamic HTML page's dynamic JavaScript data:
#
# New dynamic HTML related function to emit data:
#   escape_string, strip_escape_string, emit_warning_arrays
#   emit_js_data():
#
# To emit csv files of warning message counts:
#   flag --gencsv
#   description_for_csv, string_for_csv:
#   count_severity(sev, kind):
#   dump_csv():

import argparse
import os
import re

parser = argparse.ArgumentParser(description='Convert a build log into HTML')
parser.add_argument('--gencsv',
                    help='Generate a CSV file with number of various warnings',
                    action='store_true',
                    default=False)
parser.add_argument('--byproject',
                    help='Separate warnings in HTML output by project names',
                    action='store_true',
                    default=False)
parser.add_argument('--url',
                    help='Root URL of an Android source code tree prefixed '
                    'before files in warnings')
parser.add_argument('--separator',
                    help='Separator between the end of a URL and the line '
                    'number argument. e.g. #')
parser.add_argument(dest='buildlog', metavar='build.log',
                    help='Path to build.log file')
args = parser.parse_args()


class Severity(object):
  """Severity levels and attributes."""
  # numbered by dump order
  FIXMENOW = 0
  HIGH = 1
  MEDIUM = 2
  LOW = 3
  ANALYZER = 4
  TIDY = 5
  HARMLESS = 6
  UNKNOWN = 7
  SKIP = 8
  range = range(SKIP + 1)
  attributes = [
      # pylint:disable=bad-whitespace
      ['fuchsia',   'FixNow',    'Critical warnings, fix me now'],
      ['red',       'High',      'High severity warnings'],
      ['orange',    'Medium',    'Medium severity warnings'],
      ['yellow',    'Low',       'Low severity warnings'],
      ['hotpink',   'Analyzer',  'Clang-Analyzer warnings'],
      ['peachpuff', 'Tidy',      'Clang-Tidy warnings'],
      ['limegreen', 'Harmless',  'Harmless warnings'],
      ['lightblue', 'Unknown',   'Unknown warnings'],
      ['grey',      'Unhandled', 'Unhandled warnings']
  ]
  colors = [a[0] for a in attributes]
  column_headers = [a[1] for a in attributes]
  headers = [a[2] for a in attributes]

warn_patterns = [
    # pylint:disable=line-too-long,g-inconsistent-quotes
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Security warning',
     'patterns': [r".*: warning: .+\[clang-analyzer-security.*\]"]},
    {'category': 'make', 'severity': Severity.MEDIUM,
     'description': 'make: overriding commands/ignoring old commands',
     'patterns': [r".*: warning: overriding commands for target .+",
                  r".*: warning: ignoring old commands for target .+"]},
    {'category': 'make', 'severity': Severity.HIGH,
     'description': 'make: LOCAL_CLANG is false',
     'patterns': [r".*: warning: LOCAL_CLANG is set to false"]},
    {'category': 'make', 'severity': Severity.HIGH,
     'description': 'SDK App using platform shared library',
     'patterns': [r".*: warning: .+ \(.*app:sdk.*\) should not link to .+ \(native:platform\)"]},
    {'category': 'make', 'severity': Severity.HIGH,
     'description': 'System module linking to a vendor module',
     'patterns': [r".*: warning: .+ \(.+\) should not link to .+ \(partition:.+\)"]},
    {'category': 'make', 'severity': Severity.MEDIUM,
     'description': 'Invalid SDK/NDK linking',
     'patterns': [r".*: warning: .+ \(.+\) should not link to .+ \(.+\)"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wimplicit-function-declaration',
     'description': 'Implicit function declaration',
     'patterns': [r".*: warning: implicit declaration of function .+",
                  r".*: warning: implicitly declaring library function"]},
    {'category': 'C/C++', 'severity': Severity.SKIP,
     'description': 'skip, conflicting types for ...',
     'patterns': [r".*: warning: conflicting types for '.+'"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wtype-limits',
     'description': 'Expression always evaluates to true or false',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.HIGH,
     'description': 'Potential leak of memory, bad free, use after free',
     'patterns': [r".*: warning: Potential leak of memory",
                  r".*: warning: Potential memory leak",
                  r".*: warning: Memory allocated by alloca\(\) should not be deallocated",
                  r".*: warning: Memory allocated by .+ should be deallocated by .+ not .+",
                  r".*: warning: 'delete' applied to a pointer that was allocated",
                  r".*: warning: Use of memory after it is freed",
                  r".*: warning: Argument to .+ is the address of .+ variable",
                  r".*: warning: Argument to free\(\) is offset by .+ of memory allocated by",
                  r".*: warning: Attempt to .+ released memory"]},
    {'category': 'C/C++', 'severity': Severity.HIGH,
     'description': 'Use transient memory for control value',
     'patterns': [r".*: warning: .+Using such transient memory for the control value is .*dangerous."]},
    {'category': 'C/C++', 'severity': Severity.HIGH,
     'description': 'Return address of stack memory',
     'patterns': [r".*: warning: Address of stack memory .+ returned to caller",
                  r".*: warning: Address of stack memory .+ will be a dangling reference"]},
    {'category': 'C/C++', 'severity': Severity.HIGH,
     'description': 'Problem with vfork',
     'patterns': [r".*: warning: This .+ is prohibited after a successful vfork",
                  r".*: warning: Call to function '.+' is insecure "]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': 'infinite-recursion',
     'description': 'Infinite recursion',
     'patterns': [r".*: warning: all paths through this function will call itself"]},
    {'category': 'C/C++', 'severity': Severity.HIGH,
     'description': 'Potential buffer overflow',
     'patterns': [r".*: warning: Size argument is greater than .+ the destination buffer",
                  r".*: warning: Potential buffer overflow.",
                  r".*: warning: String copy function overflows destination buffer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Incompatible pointer types',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-fno-builtin',
     'description': 'Incompatible declaration of built in function',
     'patterns': [r".*: warning: incompatible implicit declaration of built-in function .+"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wincompatible-library-redeclaration',
     'description': 'Incompatible redeclaration of library function',
     'patterns': [r".*: warning: incompatible redeclaration of library function .+"]},
    {'category': 'C/C++', 'severity': Severity.HIGH,
     'description': 'Null passed as non-null argument',
     'patterns': [r".*: warning: Null passed to a callee that requires a non-null"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused-parameter',
     'description': 'Unused parameter',
     'patterns': [r".*: warning: unused parameter '.*'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused',
     'description': 'Unused function, variable or label',
     'patterns': [r".*: warning: '.+' defined but not used",
                  r".*: warning: unused function '.+'",
                  r".*: warning: private field '.+' is not used",
                  r".*: warning: unused variable '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused-value',
     'description': 'Statement with no effect or result unused',
     'patterns': [r".*: warning: statement with no effect",
                  r".*: warning: expression result unused"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunused-result',
     'description': 'Ignoreing return value of function',
     'patterns': [r".*: warning: ignoring return value of function .+Wunused-result"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-field-initializers',
     'description': 'Missing initializer',
     'patterns': [r".*: warning: missing initializer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wdelete-non-virtual-dtor',
     'description': 'Need virtual destructor',
     'patterns': [r".*: warning: delete called .* has virtual functions but non-virtual destructor"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip, near initialization for ...',
     'patterns': [r".*: warning: \(near initialization for '.+'\)"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wdate-time',
     'description': 'Expansion of data or time macro',
     'patterns': [r".*: warning: expansion of date or time macro is not reproducible"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wformat',
     'description': 'Format string does not match arguments',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wformat-extra-args',
     'description': 'Too many arguments for format string',
     'patterns': [r".*: warning: too many arguments for format"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wformat-invalid-specifier',
     'description': 'Invalid format specifier',
     'patterns': [r".*: warning: invalid .+ specifier '.+'.+format-invalid-specifier"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsign-compare',
     'description': 'Comparison between signed and unsigned',
     'patterns': [r".*: warning: comparison between signed and unsigned",
                  r".*: warning: comparison of promoted \~unsigned with unsigned",
                  r".*: warning: signed and unsigned type in conditional expression"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Comparison between enum and non-enum',
     'patterns': [r".*: warning: enumeral and non-enumeral type in conditional expression"]},
    {'category': 'libpng', 'severity': Severity.MEDIUM,
     'description': 'libpng: zero area',
     'patterns': [r".*libpng warning: Ignoring attempt to set cHRM RGB triangle with zero area"]},
    {'category': 'aapt', 'severity': Severity.MEDIUM,
     'description': 'aapt: no comment for public symbol',
     'patterns': [r".*: warning: No comment for public symbol .+"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-braces',
     'description': 'Missing braces around initializer',
     'patterns': [r".*: warning: missing braces around initializer.*"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'No newline at end of file',
     'patterns': [r".*: warning: no newline at end of file"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'Missing space after macro name',
     'patterns': [r".*: warning: missing whitespace after the macro name"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wcast-align',
     'description': 'Cast increases required alignment',
     'patterns': [r".*: warning: cast from .* to .* increases required alignment .*"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wcast-qual',
     'description': 'Qualifier discarded',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunknown-attributes',
     'description': 'Unknown attribute',
     'patterns': [r".*: warning: unknown attribute '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wignored-attributes',
     'description': 'Attribute ignored',
     'patterns': [r".*: warning: '_*packed_*' attribute ignored",
                  r".*: warning: attribute declaration must precede definition .+ignored-attributes"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wvisibility',
     'description': 'Visibility problem',
     'patterns': [r".*: warning: declaration of '.+' will not be visible outside of this function"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wattributes',
     'description': 'Visibility mismatch',
     'patterns': [r".*: warning: '.+' declared with greater visibility than the type of its field '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Shift count greater than width of type',
     'patterns': [r".*: warning: (left|right) shift count >= width of type"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wextern-initializer',
     'description': 'extern <foo> is initialized',
     'patterns': [r".*: warning: '.+' initialized and declared 'extern'",
                  r".*: warning: 'extern' variable has an initializer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wold-style-declaration',
     'description': 'Old style declaration',
     'patterns': [r".*: warning: 'static' is not at beginning of declaration"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wreturn-type',
     'description': 'Missing return value',
     'patterns': [r".*: warning: control reaches end of non-void function"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wimplicit-int',
     'description': 'Implicit int type',
     'patterns': [r".*: warning: type specifier missing, defaults to 'int'",
                  r".*: warning: type defaults to 'int' in declaration of '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmain-return-type',
     'description': 'Main function should return int',
     'patterns': [r".*: warning: return type of 'main' is not 'int'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wuninitialized',
     'description': 'Variable may be used uninitialized',
     'patterns': [r".*: warning: '.+' may be used uninitialized in this function"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wuninitialized',
     'description': 'Variable is used uninitialized',
     'patterns': [r".*: warning: '.+' is used uninitialized in this function",
                  r".*: warning: variable '.+' is uninitialized when used here"]},
    {'category': 'ld', 'severity': Severity.MEDIUM, 'option': '-fshort-enums',
     'description': 'ld: possible enum size mismatch',
     'patterns': [r".*: warning: .* uses variable-size enums yet the output is to use 32-bit enums; use of enum values across objects may fail"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-sign',
     'description': 'Pointer targets differ in signedness',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wstrict-overflow',
     'description': 'Assuming overflow does not occur',
     'patterns': [r".*: warning: assuming signed overflow does not occur when assuming that .* is always (true|false)"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wempty-body',
     'description': 'Suggest adding braces around empty body',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wparentheses',
     'description': 'Suggest adding parentheses',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Static variable used in non-static inline function',
     'patterns': [r".*: warning: '.+' is static but used in inline function '.+' which is not static"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wimplicit int',
     'description': 'No type or storage class (will default to int)',
     'patterns': [r".*: warning: data definition has no type or storage class"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Null pointer',
     'patterns': [r".*: warning: Dereference of null pointer",
                  r".*: warning: Called .+ pointer is null",
                  r".*: warning: Forming reference to null pointer",
                  r".*: warning: Returning null reference",
                  r".*: warning: Null pointer passed as an argument to a 'nonnull' parameter",
                  r".*: warning: .+ results in a null pointer dereference",
                  r".*: warning: Access to .+ results in a dereference of a null pointer",
                  r".*: warning: Null pointer argument in"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip, parameter name (without types) in function declaration',
     'patterns': [r".*: warning: parameter names \(without types\) in function declaration"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wstrict-aliasing',
     'description': 'Dereferencing <foo> breaks strict aliasing rules',
     'patterns': [r".*: warning: dereferencing .* break strict-aliasing rules"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-to-int-cast',
     'description': 'Cast from pointer to integer of different size',
     'patterns': [r".*: warning: cast from pointer to integer of different size",
                  r".*: warning: initialization makes pointer from integer without a cast"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wint-to-pointer-cast',
     'description': 'Cast to pointer from integer of different size',
     'patterns': [r".*: warning: cast to pointer from integer of different size"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Symbol redefined',
     'patterns': [r".*: warning: "".+"" redefined"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip, ... location of the previous definition',
     'patterns': [r".*: warning: this is the location of the previous definition"]},
    {'category': 'ld', 'severity': Severity.MEDIUM,
     'description': 'ld: type and size of dynamic symbol are not defined',
     'patterns': [r".*: warning: type and size of dynamic symbol `.+' are not defined"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Pointer from integer without cast',
     'patterns': [r".*: warning: assignment makes pointer from integer without a cast"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Pointer from integer without cast',
     'patterns': [r".*: warning: passing argument [0-9]+ of '.+' makes pointer from integer without a cast"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Integer from pointer without cast',
     'patterns': [r".*: warning: assignment makes integer from pointer without a cast"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Integer from pointer without cast',
     'patterns': [r".*: warning: passing argument [0-9]+ of '.+' makes integer from pointer without a cast"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Integer from pointer without cast',
     'patterns': [r".*: warning: return makes integer from pointer without a cast"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunknown-pragmas',
     'description': 'Ignoring pragma',
     'patterns': [r".*: warning: ignoring #pragma .+"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-W#pragma-messages',
     'description': 'Pragma warning messages',
     'patterns': [r".*: warning: .+W#pragma-messages"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wclobbered',
     'description': 'Variable might be clobbered by longjmp or vfork',
     'patterns': [r".*: warning: variable '.+' might be clobbered by 'longjmp' or 'vfork'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wclobbered',
     'description': 'Argument might be clobbered by longjmp or vfork',
     'patterns': [r".*: warning: argument '.+' might be clobbered by 'longjmp' or 'vfork'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wredundant-decls',
     'description': 'Redundant declaration',
     'patterns': [r".*: warning: redundant redeclaration of '.+'"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip, previous declaration ... was here',
     'patterns': [r".*: warning: previous declaration of '.+' was here"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wswitch-enum',
     'description': 'Enum value not handled in switch',
     'patterns': [r".*: warning: .*enumeration value.* not handled in switch.+Wswitch"]},
    {'category': 'java', 'severity': Severity.MEDIUM, 'option': '-encoding',
     'description': 'Java: Non-ascii characters used, but ascii encoding specified',
     'patterns': [r".*: warning: unmappable character for encoding ascii"]},
    {'category': 'java', 'severity': Severity.MEDIUM,
     'description': 'Java: Non-varargs call of varargs method with inexact argument type for last parameter',
     'patterns': [r".*: warning: non-varargs call of varargs method with inexact argument type for last parameter"]},
    {'category': 'java', 'severity': Severity.MEDIUM,
     'description': 'Java: Unchecked method invocation',
     'patterns': [r".*: warning: \[unchecked\] unchecked method invocation: .+ in class .+"]},
    {'category': 'java', 'severity': Severity.MEDIUM,
     'description': 'Java: Unchecked conversion',
     'patterns': [r".*: warning: \[unchecked\] unchecked conversion"]},
    {'category': 'java', 'severity': Severity.MEDIUM,
     'description': '_ used as an identifier',
     'patterns': [r".*: warning: '_' used as an identifier"]},

    # Warnings from Error Prone.
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description': 'Java: Use of deprecated member',
     'patterns': [r'.*: warning: \[deprecation\] .+']},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description': 'Java: Unchecked conversion',
     'patterns': [r'.*: warning: \[unchecked\] .+']},

    # Warnings from Error Prone (auto generated list).
    {'category': 'java',
     'severity': Severity.LOW,
     'description':
         'Java: Deprecated item is not annotated with @Deprecated',
     'patterns': [r".*: warning: \[DepAnn\] .+"]},
    {'category': 'java',
     'severity': Severity.LOW,
     'description':
         'Java: Fallthrough warning suppression has no effect if warning is suppressed',
     'patterns': [r".*: warning: \[FallthroughSuppression\] .+"]},
    {'category': 'java',
     'severity': Severity.LOW,
     'description':
         'Java: Prefer \'L\' to \'l\' for the suffix to long literals',
     'patterns': [r".*: warning: \[LongLiteralLowerCaseSuffix\] .+"]},
    {'category': 'java',
     'severity': Severity.LOW,
     'description':
         'Java: @Binds is a more efficient and declaritive mechanism for delegating a binding.',
     'patterns': [r".*: warning: \[UseBinds\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Assertions may be disabled at runtime and do not guarantee that execution will halt here; consider throwing an exception instead',
     'patterns': [r".*: warning: \[AssertFalse\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Classes that implement Annotation must override equals and hashCode. Consider using AutoAnnotation instead of implementing Annotation by hand.',
     'patterns': [r".*: warning: \[BadAnnotationImplementation\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: BigDecimal(double) and BigDecimal.valueOf(double) may lose precision, prefer BigDecimal(String) or BigDecimal(long)',
     'patterns': [r".*: warning: \[BigDecimalLiteralDouble\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Mockito cannot mock final classes',
     'patterns': [r".*: warning: \[CannotMockFinalClass\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: This code, which counts elements using a loop, can be replaced by a simpler library method',
     'patterns': [r".*: warning: \[ElementsCountedInLoop\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Empty top-level type declaration',
     'patterns': [r".*: warning: \[EmptyTopLevelDeclaration\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Classes that override equals should also override hashCode.',
     'patterns': [r".*: warning: \[EqualsHashCode\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: An equality test between objects with incompatible types always returns false',
     'patterns': [r".*: warning: \[EqualsIncompatibleType\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: If you return or throw from a finally, then values returned or thrown from the try-catch block will be ignored. Consider using try-with-resources instead.',
     'patterns': [r".*: warning: \[Finally\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: This annotation has incompatible modifiers as specified by its @IncompatibleModifiers annotation',
     'patterns': [r".*: warning: \[IncompatibleModifiers\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Class should not implement both `Iterable` and `Iterator`',
     'patterns': [r".*: warning: \[IterableAndIterator\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Floating-point comparison without error tolerance',
     'patterns': [r".*: warning: \[JUnit3FloatingPointComparisonWithoutDelta\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Test class inherits from JUnit 3\'s TestCase but has JUnit 4 @Test annotations.',
     'patterns': [r".*: warning: \[JUnitAmbiguousTestClass\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Enum switch statement is missing cases',
     'patterns': [r".*: warning: \[MissingCasesInEnumSwitch\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Not calling fail() when expecting an exception masks bugs',
     'patterns': [r".*: warning: \[MissingFail\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: method overrides method in supertype; expected @Override',
     'patterns': [r".*: warning: \[MissingOverride\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Source files should not contain multiple top-level class declarations',
     'patterns': [r".*: warning: \[MultipleTopLevelClasses\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: This update of a volatile variable is non-atomic',
     'patterns': [r".*: warning: \[NonAtomicVolatileUpdate\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Static import of member uses non-canonical name',
     'patterns': [r".*: warning: \[NonCanonicalStaticMemberImport\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: equals method doesn\'t override Object.equals',
     'patterns': [r".*: warning: \[NonOverridingEquals\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Constructors should not be annotated with @Nullable since they cannot return null',
     'patterns': [r".*: warning: \[NullableConstructor\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: @Nullable should not be used for primitive types since they cannot be null',
     'patterns': [r".*: warning: \[NullablePrimitive\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: void-returning methods should not be annotated with @Nullable, since they cannot return null',
     'patterns': [r".*: warning: \[NullableVoid\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Package names should match the directory they are declared in',
     'patterns': [r".*: warning: \[PackageLocation\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Second argument to Preconditions.* is a call to String.format(), which can be unwrapped',
     'patterns': [r".*: warning: \[PreconditionsErrorMessageEagerEvaluation\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Preconditions only accepts the %s placeholder in error message strings',
     'patterns': [r".*: warning: \[PreconditionsInvalidPlaceholder\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Passing a primitive array to a varargs method is usually wrong',
     'patterns': [r".*: warning: \[PrimitiveArrayPassedToVarargsMethod\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Protobuf fields cannot be null, so this check is redundant',
     'patterns': [r".*: warning: \[ProtoFieldPreconditionsCheckNotNull\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: This annotation is missing required modifiers as specified by its @RequiredModifiers annotation',
     'patterns': [r".*: warning: \[RequiredModifiers\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: A static variable or method should not be accessed from an object instance',
     'patterns': [r".*: warning: \[StaticAccessedFromInstance\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: String comparison using reference equality instead of value equality',
     'patterns': [r".*: warning: \[StringEquality\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Declaring a type parameter that is only used in the return type is a misuse of generics: operations on the type parameter are unchecked, it hides unsafe casts at invocations of the method, and it interacts badly with method overload resolution.',
     'patterns': [r".*: warning: \[TypeParameterUnusedInFormals\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Using static imports for types is unnecessary',
     'patterns': [r".*: warning: \[UnnecessaryStaticImport\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Unsynchronized method overrides a synchronized method.',
     'patterns': [r".*: warning: \[UnsynchronizedOverridesSynchronized\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Non-constant variable missing @Var annotation',
     'patterns': [r".*: warning: \[Var\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Because of spurious wakeups, Object.wait() and Condition.await() must always be called in a loop',
     'patterns': [r".*: warning: \[WaitNotInLoop\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Subclasses of Fragment must be instantiable via Class#newInstance(): the class must be public, static and have a public nullary constructor',
     'patterns': [r".*: warning: \[FragmentNotInstantiable\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Hardcoded reference to /sdcard',
     'patterns': [r".*: warning: \[HardCodedSdCardPath\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Incompatible type as argument to Object-accepting Java collections method',
     'patterns': [r".*: warning: \[CollectionIncompatibleType\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: @AssistedInject and @Inject should not be used on different constructors in the same class.',
     'patterns': [r".*: warning: \[AssistedInjectAndInjectOnConstructors\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Although Guice allows injecting final fields, doing so is not recommended because the injected value may not be visible to other threads.',
     'patterns': [r".*: warning: \[GuiceInjectOnFinalField\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: This method is not annotated with @Inject, but it overrides a method that is annotated with @com.google.inject.Inject. Guice will inject this method, and it is recommended to annotate it explicitly.',
     'patterns': [r".*: warning: \[OverridesGuiceInjectableMethod\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Double-checked locking on non-volatile fields is unsafe',
     'patterns': [r".*: warning: \[DoubleCheckedLocking\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Writes to static fields should not be guarded by instance locks',
     'patterns': [r".*: warning: \[StaticGuardedByInstance\] .+"]},
    {'category': 'java',
     'severity': Severity.MEDIUM,
     'description':
         'Java: Synchronizing on non-final fields is not safe: if the field is ever updated, different threads may end up locking on different objects.',
     'patterns': [r".*: warning: \[SynchronizeOnNonFinalField\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Reference equality used to compare arrays',
     'patterns': [r".*: warning: \[ArrayEquals\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: hashcode method on array does not hash array contents',
     'patterns': [r".*: warning: \[ArrayHashCode\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Calling toString on an array does not provide useful information',
     'patterns': [r".*: warning: \[ArrayToString.*\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Arrays.asList does not autobox primitive arrays, as one might expect.',
     'patterns': [r".*: warning: \[ArraysAsListPrimitiveArray\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: AsyncCallable should not return a null Future, only a Future whose result is null.',
     'patterns': [r".*: warning: \[AsyncCallableReturnsNull\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: AsyncFunction should not return a null Future, only a Future whose result is null.',
     'patterns': [r".*: warning: \[AsyncFunctionReturnsNull\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Possible sign flip from narrowing conversion',
     'patterns': [r".*: warning: \[BadComparable\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Shift by an amount that is out of range',
     'patterns': [r".*: warning: \[BadShiftAmount\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: valueOf provides better time and space performance',
     'patterns': [r".*: warning: \[BoxedPrimitiveConstructor\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: The called constructor accepts a parameter with the same name and type as one of its caller\'s parameters, but its caller doesn\'t pass that parameter to it.  It\'s likely that it was intended to.',
     'patterns': [r".*: warning: \[ChainingConstructorIgnoresParameter\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Ignored return value of method that is annotated with @CheckReturnValue',
     'patterns': [r".*: warning: \[CheckReturnValue\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Inner class is non-static but does not reference enclosing class',
     'patterns': [r".*: warning: \[ClassCanBeStatic\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: The source file name should match the name of the top-level class it contains',
     'patterns': [r".*: warning: \[ClassName\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: This comparison method violates the contract',
     'patterns': [r".*: warning: \[ComparisonContractViolated\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Comparison to value that is out of range for the compared type',
     'patterns': [r".*: warning: \[ComparisonOutOfRange\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Non-compile-time constant expression passed to parameter with @CompileTimeConstant type annotation.',
     'patterns': [r".*: warning: \[CompileTimeConstant\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Exception created but not thrown',
     'patterns': [r".*: warning: \[DeadException\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Division by integer literal zero',
     'patterns': [r".*: warning: \[DivZero\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Empty statement after if',
     'patterns': [r".*: warning: \[EmptyIf\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: == NaN always returns false; use the isNaN methods instead',
     'patterns': [r".*: warning: \[EqualsNaN\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Method annotated @ForOverride must be protected or package-private and only invoked from declaring class',
     'patterns': [r".*: warning: \[ForOverride\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Futures.getChecked requires a checked exception type with a standard constructor.',
     'patterns': [r".*: warning: \[FuturesGetCheckedIllegalExceptionType\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Calling getClass() on an object of type Class returns the Class object for java.lang.Class; you probably meant to operate on the object directly',
     'patterns': [r".*: warning: \[GetClassOnClass\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: An object is tested for equality to itself using Guava Libraries',
     'patterns': [r".*: warning: \[GuavaSelfEquals\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: contains() is a legacy method that is equivalent to containsValue()',
     'patterns': [r".*: warning: \[HashtableContains\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Cipher.getInstance() is invoked using either the default settings or ECB mode',
     'patterns': [r".*: warning: \[InsecureCipherMode\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Invalid syntax used for a regular expression',
     'patterns': [r".*: warning: \[InvalidPatternSyntax\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: The argument to Class#isInstance(Object) should not be a Class',
     'patterns': [r".*: warning: \[IsInstanceOfClass\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: jMock tests must have a @RunWith(JMock.class) annotation, or the Mockery field must have a @Rule JUnit annotation',
     'patterns': [r".*: warning: \[JMockTestWithoutRunWithOrRuleAnnotation\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Test method will not be run; please prefix name with "test"',
     'patterns': [r".*: warning: \[JUnit3TestNotRun\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: setUp() method will not be run; Please add a @Before annotation',
     'patterns': [r".*: warning: \[JUnit4SetUpNotRun\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: tearDown() method will not be run; Please add an @After annotation',
     'patterns': [r".*: warning: \[JUnit4TearDownNotRun\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Test method will not be run; please add @Test annotation',
     'patterns': [r".*: warning: \[JUnit4TestNotRun\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Printf-like format string does not match its arguments',
     'patterns': [r".*: warning: \[MalformedFormatString\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Use of "YYYY" (week year) in a date pattern without "ww" (week in year). You probably meant to use "yyyy" (year) instead.',
     'patterns': [r".*: warning: \[MisusedWeekYear\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: A bug in Mockito will cause this test to fail at runtime with a ClassCastException',
     'patterns': [r".*: warning: \[MockitoCast\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Missing method call for verify(mock) here',
     'patterns': [r".*: warning: \[MockitoUsage\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Modifying a collection with itself',
     'patterns': [r".*: warning: \[ModifyingCollectionWithItself\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Compound assignments to bytes, shorts, chars, and floats hide dangerous casts',
     'patterns': [r".*: warning: \[NarrowingCompoundAssignment\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: @NoAllocation was specified on this method, but something was found that would trigger an allocation',
     'patterns': [r".*: warning: \[NoAllocation\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Static import of type uses non-canonical name',
     'patterns': [r".*: warning: \[NonCanonicalStaticImport\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: @CompileTimeConstant parameters should be final',
     'patterns': [r".*: warning: \[NonFinalCompileTimeConstant\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Calling getAnnotation on an annotation that is not retained at runtime.',
     'patterns': [r".*: warning: \[NonRuntimeAnnotation\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Numeric comparison using reference equality instead of value equality',
     'patterns': [r".*: warning: \[NumericEquality\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Comparison using reference equality instead of value equality',
     'patterns': [r".*: warning: \[OptionalEquality\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Varargs doesn\'t agree for overridden method',
     'patterns': [r".*: warning: \[Overrides\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Literal passed as first argument to Preconditions.checkNotNull() can never be null',
     'patterns': [r".*: warning: \[PreconditionsCheckNotNull\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: First argument to `Preconditions.checkNotNull()` is a primitive rather than an object reference',
     'patterns': [r".*: warning: \[PreconditionsCheckNotNullPrimitive\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Protobuf fields cannot be null',
     'patterns': [r".*: warning: \[ProtoFieldNullComparison\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Comparing protobuf fields of type String using reference equality',
     'patterns': [r".*: warning: \[ProtoStringFieldReferenceEquality\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java:  Check for non-whitelisted callers to RestrictedApiChecker.',
     'patterns': [r".*: warning: \[RestrictedApiChecker\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Return value of this method must be used',
     'patterns': [r".*: warning: \[ReturnValueIgnored\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Variable assigned to itself',
     'patterns': [r".*: warning: \[SelfAssignment\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: An object is compared to itself',
     'patterns': [r".*: warning: \[SelfComparision\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Variable compared to itself',
     'patterns': [r".*: warning: \[SelfEquality\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: An object is tested for equality to itself',
     'patterns': [r".*: warning: \[SelfEquals\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Comparison of a size >= 0 is always true, did you intend to check for non-emptiness?',
     'patterns': [r".*: warning: \[SizeGreaterThanOrEqualsZero\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Calling toString on a Stream does not provide useful information',
     'patterns': [r".*: warning: \[StreamToString\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: StringBuilder does not have a char constructor; this invokes the int constructor.',
     'patterns': [r".*: warning: \[StringBuilderInitWithChar\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Suppressing "deprecated" is probably a typo for "deprecation"',
     'patterns': [r".*: warning: \[SuppressWarningsDeprecated\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: throwIfUnchecked(knownCheckedException) is a no-op.',
     'patterns': [r".*: warning: \[ThrowIfUncheckedKnownChecked\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Catching Throwable/Error masks failures from fail() or assert*() in the try block',
     'patterns': [r".*: warning: \[TryFailThrowable\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Type parameter used as type qualifier',
     'patterns': [r".*: warning: \[TypeParameterQualifier\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Non-generic methods should not be invoked with type arguments',
     'patterns': [r".*: warning: \[UnnecessaryTypeArgument\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Instance created but never used',
     'patterns': [r".*: warning: \[UnusedAnonymousClass\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Use of wildcard imports is forbidden',
     'patterns': [r".*: warning: \[WildcardImport\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Method parameter has wrong package',
     'patterns': [r".*: warning: \[ParameterPackage\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Certain resources in `android.R.string` have names that do not match their content',
     'patterns': [r".*: warning: \[MislabeledAndroidString\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Return value of android.graphics.Rect.intersect() must be checked',
     'patterns': [r".*: warning: \[RectIntersectReturnValueIgnored\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Invalid printf-style format string',
     'patterns': [r".*: warning: \[FormatString\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: @AssistedInject and @Inject cannot be used on the same constructor.',
     'patterns': [r".*: warning: \[AssistedInjectAndInjectOnSameConstructor\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Injected constructors cannot be optional nor have binding annotations',
     'patterns': [r".*: warning: \[InjectedConstructorAnnotations\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: The target of a scoping annotation must be set to METHOD and/or TYPE.',
     'patterns': [r".*: warning: \[InjectInvalidTargetingOnScopingAnnotation\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Abstract methods are not injectable with javax.inject.Inject.',
     'patterns': [r".*: warning: \[JavaxInjectOnAbstractMethod\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: @javax.inject.Inject cannot be put on a final field.',
     'patterns': [r".*: warning: \[JavaxInjectOnFinalField\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: A class may not have more than one injectable constructor.',
     'patterns': [r".*: warning: \[MoreThanOneInjectableConstructor\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Using more than one qualifier annotation on the same element is not allowed.',
     'patterns': [r".*: warning: \[InjectMoreThanOneQualifier\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: A class can be annotated with at most one scope annotation',
     'patterns': [r".*: warning: \[InjectMoreThanOneScopeAnnotationOnClass\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Annotations cannot be both Qualifiers/BindingAnnotations and Scopes',
     'patterns': [r".*: warning: \[OverlappingQualifierAndScopeAnnotation\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Scope annotation on an interface or abstact class is not allowed',
     'patterns': [r".*: warning: \[InjectScopeAnnotationOnInterfaceOrAbstractClass\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Scoping and qualifier annotations must have runtime retention.',
     'patterns': [r".*: warning: \[InjectScopeOrQualifierAnnotationRetention\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Dagger @Provides methods may not return null unless annotated with @Nullable',
     'patterns': [r".*: warning: \[DaggerProvidesNull\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Scope annotation on implementation class of AssistedInject factory is not allowed',
     'patterns': [r".*: warning: \[GuiceAssistedInjectScoping\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: A constructor cannot have two @Assisted parameters of the same type unless they are disambiguated with named @Assisted annotations. ',
     'patterns': [r".*: warning: \[GuiceAssistedParameters\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: This method is not annotated with @Inject, but it overrides a  method that is  annotated with @javax.inject.Inject.',
     'patterns': [r".*: warning: \[OverridesJavaxInjectableMethod\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Checks for unguarded accesses to fields and methods with @GuardedBy annotations',
     'patterns': [r".*: warning: \[GuardedByChecker\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Invalid @GuardedBy expression',
     'patterns': [r".*: warning: \[GuardedByValidator\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: Type declaration annotated with @Immutable is not immutable',
     'patterns': [r".*: warning: \[Immutable\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: This method does not acquire the locks specified by its @LockMethod annotation',
     'patterns': [r".*: warning: \[LockMethodChecker\] .+"]},
    {'category': 'java',
     'severity': Severity.HIGH,
     'description':
         'Java: This method does not acquire the locks specified by its @UnlockMethod annotation',
     'patterns': [r".*: warning: \[UnlockMethod\] .+"]},

    {'category': 'java',
     'severity': Severity.UNKNOWN,
     'description': 'Java: Unclassified/unrecognized warnings',
     'patterns': [r".*: warning: \[.+\] .+"]},

    {'category': 'aapt', 'severity': Severity.MEDIUM,
     'description': 'aapt: No default translation',
     'patterns': [r".*: warning: string '.+' has no default translation in .*"]},
    {'category': 'aapt', 'severity': Severity.MEDIUM,
     'description': 'aapt: Missing default or required localization',
     'patterns': [r".*: warning: \*\*\*\* string '.+' has no default or required localization for '.+' in .+"]},
    {'category': 'aapt', 'severity': Severity.MEDIUM,
     'description': 'aapt: String marked untranslatable, but translation exists',
     'patterns': [r".*: warning: string '.+' in .* marked untranslatable but exists in locale '??_??'"]},
    {'category': 'aapt', 'severity': Severity.MEDIUM,
     'description': 'aapt: empty span in string',
     'patterns': [r".*: warning: empty '.+' span found in text '.+"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Taking address of temporary',
     'patterns': [r".*: warning: taking address of temporary"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Possible broken line continuation',
     'patterns': [r".*: warning: backslash and newline separated by space"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wundefined-var-template',
     'description': 'Undefined variable template',
     'patterns': [r".*: warning: instantiation of variable .* no definition is available"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wundefined-inline',
     'description': 'Inline function is not defined',
     'patterns': [r".*: warning: inline function '.*' is not defined"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Warray-bounds',
     'description': 'Array subscript out of bounds',
     'patterns': [r".*: warning: array subscript is above array bounds",
                  r".*: warning: Array subscript is undefined",
                  r".*: warning: array subscript is below array bounds"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Excess elements in initializer',
     'patterns': [r".*: warning: excess elements in .+ initializer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Decimal constant is unsigned only in ISO C90',
     'patterns': [r".*: warning: this decimal constant is unsigned only in ISO C90"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmain',
     'description': 'main is usually a function',
     'patterns': [r".*: warning: 'main' is usually a function"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Typedef ignored',
     'patterns': [r".*: warning: 'typedef' was ignored in this declaration"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Waddress',
     'description': 'Address always evaluates to true',
     'patterns': [r".*: warning: the address of '.+' will always evaluate as 'true'"]},
    {'category': 'C/C++', 'severity': Severity.FIXMENOW,
     'description': 'Freeing a non-heap object',
     'patterns': [r".*: warning: attempt to free a non-heap object '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wchar-subscripts',
     'description': 'Array subscript has type char',
     'patterns': [r".*: warning: array subscript .+ type 'char'.+Wchar-subscripts"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Constant too large for type',
     'patterns': [r".*: warning: integer constant is too large for '.+' type"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Woverflow',
     'description': 'Constant too large for type, truncated',
     'patterns': [r".*: warning: large integer implicitly truncated to unsigned type"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Winteger-overflow',
     'description': 'Overflow in expression',
     'patterns': [r".*: warning: overflow in expression; .*Winteger-overflow"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Woverflow',
     'description': 'Overflow in implicit constant conversion',
     'patterns': [r".*: warning: overflow in implicit constant conversion"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Declaration does not declare anything',
     'patterns': [r".*: warning: declaration 'class .+' does not declare anything"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wreorder',
     'description': 'Initialization order will be different',
     'patterns': [r".*: warning: '.+' will be initialized after",
                  r".*: warning: field .+ will be initialized after .+Wreorder"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip,   ....',
     'patterns': [r".*: warning:   '.+'"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip,   base ...',
     'patterns': [r".*: warning:   base '.+'"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip,   when initialized here',
     'patterns': [r".*: warning:   when initialized here"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-parameter-type',
     'description': 'Parameter type not specified',
     'patterns': [r".*: warning: type of '.+' defaults to 'int'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-declarations',
     'description': 'Missing declarations',
     'patterns': [r".*: warning: declaration does not declare anything"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wmissing-noreturn',
     'description': 'Missing noreturn',
     'patterns': [r".*: warning: function '.*' could be declared with attribute 'noreturn'"]},
    # pylint:disable=anomalous-backslash-in-string
    # TODO(chh): fix the backslash pylint warning.
    {'category': 'gcc', 'severity': Severity.MEDIUM,
     'description': 'Invalid option for C file',
     'patterns': [r".*: warning: command line option "".+"" is valid for C\+\+\/ObjC\+\+ but not for C"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'User warning',
     'patterns': [r".*: warning: #warning "".+"""]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wvexing-parse',
     'description': 'Vexing parsing problem',
     'patterns': [r".*: warning: empty parentheses interpreted as a function declaration"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wextra',
     'description': 'Dereferencing void*',
     'patterns': [r".*: warning: dereferencing 'void \*' pointer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Comparison of pointer and integer',
     'patterns': [r".*: warning: ordered comparison of pointer with integer zero",
                  r".*: warning: .*comparison between pointer and integer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Use of error-prone unary operator',
     'patterns': [r".*: warning: use of unary operator that may be intended as compound assignment"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wwrite-strings',
     'description': 'Conversion of string constant to non-const char*',
     'patterns': [r".*: warning: deprecated conversion from string constant to '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wstrict-prototypes',
     'description': 'Function declaration isn''t a prototype',
     'patterns': [r".*: warning: function declaration isn't a prototype"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wignored-qualifiers',
     'description': 'Type qualifiers ignored on function return value',
     'patterns': [r".*: warning: type qualifiers ignored on function return type",
                  r".*: warning: .+ type qualifier .+ has no effect .+Wignored-qualifiers"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': '<foo> declared inside parameter list, scope limited to this definition',
     'patterns': [r".*: warning: '.+' declared inside parameter list"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip, its scope is only this ...',
     'patterns': [r".*: warning: its scope is only this definition or declaration, which is probably not what you want"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wcomment',
     'description': 'Line continuation inside comment',
     'patterns': [r".*: warning: multi-line comment"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wcomment',
     'description': 'Comment inside comment',
     'patterns': [r".*: warning: "".+"" within comment"]},
    # Warning "value stored is never read" could be from clang-tidy or clang static analyzer.
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Value stored is never read',
     'patterns': [r".*: warning: Value stored to .+ is never read.*clang-analyzer-deadcode.DeadStores"]},
    {'category': 'C/C++', 'severity': Severity.LOW,
     'description': 'Value stored is never read',
     'patterns': [r".*: warning: Value stored to .+ is never read"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wdeprecated-declarations',
     'description': 'Deprecated declarations',
     'patterns': [r".*: warning: .+ is deprecated.+deprecated-declarations"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wdeprecated-register',
     'description': 'Deprecated register',
     'patterns': [r".*: warning: 'register' storage class specifier is deprecated"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wpointer-sign',
     'description': 'Converts between pointers to integer types with different sign',
     'patterns': [r".*: warning: .+ converts between pointers to integer types with different sign"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'Extra tokens after #endif',
     'patterns': [r".*: warning: extra tokens at end of #endif directive"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wenum-compare',
     'description': 'Comparison between different enums',
     'patterns': [r".*: warning: comparison between '.+' and '.+'.+Wenum-compare"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wconversion',
     'description': 'Conversion may change value',
     'patterns': [r".*: warning: converting negative value '.+' to '.+'",
                  r".*: warning: conversion to '.+' .+ may (alter|change)"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wconversion-null',
     'description': 'Converting to non-pointer type from NULL',
     'patterns': [r".*: warning: converting to non-pointer type '.+' from NULL"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnull-conversion',
     'description': 'Converting NULL to non-pointer type',
     'patterns': [r".*: warning: implicit conversion of NULL constant to '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnon-literal-null-conversion',
     'description': 'Zero used as null pointer',
     'patterns': [r".*: warning: expression .* zero treated as a null pointer constant"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Implicit conversion changes value',
     'patterns': [r".*: warning: implicit conversion .* changes value from .* to .*-conversion"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Passing NULL as non-pointer argument',
     'patterns': [r".*: warning: passing NULL to non-pointer argument [0-9]+ of '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wctor-dtor-privacy',
     'description': 'Class seems unusable because of private ctor/dtor',
     'patterns': [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
    {'category': 'C/C++', 'severity': Severity.SKIP, 'option': '-Wctor-dtor-privacy',
     'description': 'Class seems unusable because of private ctor/dtor',
     'patterns': [r".*: warning: 'class .+' only defines a private destructor and has no friends"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wctor-dtor-privacy',
     'description': 'Class seems unusable because of private ctor/dtor',
     'patterns': [r".*: warning: 'class .+' only defines private constructors and has no friends"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wgnu-static-float-init',
     'description': 'In-class initializer for static const float/double',
     'patterns': [r".*: warning: in-class initializer for static data member of .+const (float|double)"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wpointer-arith',
     'description': 'void* used in arithmetic',
     'patterns': [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"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsign-promo',
     'description': 'Overload resolution chose to promote from unsigned or enum to signed type',
     'patterns': [r".*: warning: passing '.+' chooses '.+' over '.+'.*Wsign-promo"]},
    {'category': 'cont.', 'severity': Severity.SKIP,
     'description': 'skip,   in call to ...',
     'patterns': [r".*: warning:   in call to '.+'"]},
    {'category': 'C/C++', 'severity': Severity.HIGH, 'option': '-Wextra',
     'description': 'Base should be explicitly initialized in copy constructor',
     'patterns': [r".*: warning: base class '.+' should be explicitly initialized in the copy constructor"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'VLA has zero or negative size',
     'patterns': [r".*: warning: Declared variable-length array \(VLA\) has .+ size"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Return value from void function',
     'patterns': [r".*: warning: 'return' with a value, in function returning void"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'multichar',
     'description': 'Multi-character character constant',
     'patterns': [r".*: warning: multi-character character constant"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'writable-strings',
     'description': 'Conversion from string literal to char*',
     'patterns': [r".*: warning: .+ does not allow conversion from string literal to 'char \*'"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wextra-semi',
     'description': 'Extra \';\'',
     'patterns': [r".*: warning: extra ';' .+extra-semi"]},
    {'category': 'C/C++', 'severity': Severity.LOW,
     'description': 'Useless specifier',
     'patterns': [r".*: warning: useless storage class specifier in empty declaration"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wduplicate-decl-specifier',
     'description': 'Duplicate declaration specifier',
     'patterns': [r".*: warning: duplicate '.+' declaration specifier"]},
    {'category': 'logtags', 'severity': Severity.LOW,
     'description': 'Duplicate logtag',
     'patterns': [r".*: warning: tag \".+\" \(.+\) duplicated in .+"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'typedef-redefinition',
     'description': 'Typedef redefinition',
     'patterns': [r".*: warning: redefinition of typedef '.+' is a C11 feature"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'gnu-designator',
     'description': 'GNU old-style field designator',
     'patterns': [r".*: warning: use of GNU old-style field designator extension"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'missing-field-initializers',
     'description': 'Missing field initializers',
     'patterns': [r".*: warning: missing field '.+' initializer"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'missing-braces',
     'description': 'Missing braces',
     'patterns': [r".*: warning: suggest braces around initialization of",
                  r".*: warning: too many braces around scalar initializer .+Wmany-braces-around-scalar-init",
                  r".*: warning: braces around scalar initializer"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'sign-compare',
     'description': 'Comparison of integers of different signs',
     'patterns': [r".*: warning: comparison of integers of different signs.+sign-compare"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'dangling-else',
     'description': 'Add braces to avoid dangling else',
     'patterns': [r".*: warning: add explicit braces to avoid dangling else"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'initializer-overrides',
     'description': 'Initializer overrides prior initialization',
     'patterns': [r".*: warning: initializer overrides prior initialization of this subobject"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'self-assign',
     'description': 'Assigning value to self',
     'patterns': [r".*: warning: explicitly assigning value of .+ to itself"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'gnu-variable-sized-type-not-at-end',
     'description': 'GNU extension, variable sized type not at end',
     'patterns': [r".*: warning: field '.+' with variable sized type '.+' not at the end of a struct or class"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'tautological-constant-out-of-range-compare',
     'description': 'Comparison of constant is always false/true',
     'patterns': [r".*: comparison of .+ is always .+Wtautological-constant-out-of-range-compare"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'overloaded-virtual',
     'description': 'Hides overloaded virtual function',
     'patterns': [r".*: '.+' hides overloaded virtual function"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'incompatible-pointer-types',
     'description': 'Incompatible pointer types',
     'patterns': [r".*: warning: incompatible pointer types .+Wincompatible-pointer-types"]},
    {'category': 'logtags', 'severity': Severity.LOW, 'option': 'asm-operand-widths',
     'description': 'ASM value size does not match register size',
     'patterns': [r".*: warning: value size does not match register size specified by the constraint and modifier"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'tautological-compare',
     'description': 'Comparison of self is always false',
     'patterns': [r".*: self-comparison always evaluates to false"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'constant-logical-operand',
     'description': 'Logical op with constant operand',
     'patterns': [r".*: use of logical '.+' with constant operand"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'literal-suffix',
     'description': 'Needs a space between literal and string macro',
     'patterns': [r".*: warning: invalid suffix on literal.+ requires a space .+Wliteral-suffix"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '#warnings',
     'description': 'Warnings from #warning',
     'patterns': [r".*: warning: .+-W#warnings"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': 'absolute-value',
     'description': 'Using float/int absolute value function with int/float argument',
     'patterns': [r".*: warning: using .+ absolute value function .+ when argument is .+ type .+Wabsolute-value",
                  r".*: warning: absolute value function '.+' given .+ which may cause truncation .+Wabsolute-value"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Wc++11-extensions',
     'description': 'Using C++11 extensions',
     'patterns': [r".*: warning: 'auto' type specifier is a C\+\+11 extension"]},
    {'category': 'C/C++', 'severity': Severity.LOW,
     'description': 'Refers to implicitly defined namespace',
     'patterns': [r".*: warning: using directive refers to implicitly-defined namespace .+"]},
    {'category': 'C/C++', 'severity': Severity.LOW, 'option': '-Winvalid-pp-token',
     'description': 'Invalid pp token',
     'patterns': [r".*: warning: missing .+Winvalid-pp-token"]},

    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Operator new returns NULL',
     'patterns': [r".*: warning: 'operator new' must not return NULL unless it is declared 'throw\(\)' .+"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wnull-arithmetic',
     'description': 'NULL used in arithmetic',
     'patterns': [r".*: warning: NULL used in arithmetic",
                  r".*: warning: comparison between NULL and non-pointer"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'header-guard',
     'description': 'Misspelled header guard',
     'patterns': [r".*: warning: '.+' is used as a header guard .+ followed by .+ different macro"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'empty-body',
     'description': 'Empty loop body',
     'patterns': [r".*: warning: .+ loop has empty body"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'enum-conversion',
     'description': 'Implicit conversion from enumeration type',
     'patterns': [r".*: warning: implicit conversion from enumeration type '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': 'switch',
     'description': 'case value not in enumerated type',
     'patterns': [r".*: warning: case value not in enumerated type '.+'"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Undefined result',
     'patterns': [r".*: warning: The result of .+ is undefined",
                  r".*: warning: passing an object that .+ has undefined behavior \[-Wvarargs\]",
                  r".*: warning: 'this' pointer cannot be null in well-defined C\+\+ code;",
                  r".*: warning: shifting a negative signed value is undefined"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Division by zero',
     'patterns': [r".*: warning: Division by zero"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Use of deprecated method',
     'patterns': [r".*: warning: '.+' is deprecated .+"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Use of garbage or uninitialized value',
     'patterns': [r".*: warning: .+ is a garbage value",
                  r".*: warning: Function call argument is an uninitialized value",
                  r".*: warning: Undefined or garbage value returned to caller",
                  r".*: warning: Called .+ pointer is.+uninitialized",
                  r".*: warning: Called .+ pointer is.+uninitalized",  # match a typo in compiler message
                  r".*: warning: Use of zero-allocated memory",
                  r".*: warning: Dereference of undefined pointer value",
                  r".*: warning: Passed-by-value .+ contains uninitialized data",
                  r".*: warning: Branch condition evaluates to a garbage value",
                  r".*: warning: The .+ of .+ is an uninitialized value.",
                  r".*: warning: .+ is used uninitialized whenever .+sometimes-uninitialized",
                  r".*: warning: Assigned value is garbage or undefined"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Result of malloc type incompatible with sizeof operand type',
     'patterns': [r".*: warning: Result of '.+' is converted to .+ incompatible with sizeof operand type"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsizeof-array-argument',
     'description': 'Sizeof on array argument',
     'patterns': [r".*: warning: sizeof on array function parameter will return"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wsizeof-pointer-memacces',
     'description': 'Bad argument size of memory access functions',
     'patterns': [r".*: warning: .+\[-Wsizeof-pointer-memaccess\]"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Return value not checked',
     'patterns': [r".*: warning: The return value from .+ is not checked"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Possible heap pollution',
     'patterns': [r".*: warning: .*Possible heap pollution from .+ type .+"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Allocation size of 0 byte',
     'patterns': [r".*: warning: Call to .+ has an allocation size of 0 byte"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Result of malloc type incompatible with sizeof operand type',
     'patterns': [r".*: warning: Result of '.+' is converted to .+ incompatible with sizeof operand type"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wfor-loop-analysis',
     'description': 'Variable used in loop condition not modified in loop body',
     'patterns': [r".*: warning: variable '.+' used in loop condition.*Wfor-loop-analysis"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM,
     'description': 'Closing a previously closed file',
     'patterns': [r".*: warning: Closing a previously closed file"]},
    {'category': 'C/C++', 'severity': Severity.MEDIUM, 'option': '-Wunnamed-type-template-args',
     'description': 'Unnamed template type argument',
     'patterns': [r".*: warning: template argument.+Wunnamed-type-template-args"]},

    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'Discarded qualifier from pointer target type',
     'patterns': [r".*: warning: .+ discards '.+' qualifier from pointer target type"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'Use snprintf instead of sprintf',
     'patterns': [r".*: warning: .*sprintf is often misused; please use snprintf"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'Unsupported optimizaton flag',
     'patterns': [r".*: warning: optimization flag '.+' is not supported"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS,
     'description': 'Extra or missing parentheses',
     'patterns': [r".*: warning: equality comparison with extraneous parentheses",
                  r".*: warning: .+ within .+Wlogical-op-parentheses"]},
    {'category': 'C/C++', 'severity': Severity.HARMLESS, 'option': 'mismatched-tags',
     'description': 'Mismatched class vs struct tags',
     'patterns': [r".*: warning: '.+' defined as a .+ here but previously declared as a .+mismatched-tags",
                  r".*: warning: .+ was previously declared as a .+mismatched-tags"]},

    # these next ones are to deal with formatting problems resulting from the log being mixed up by 'make -j'
    {'category': 'C/C++', 'severity': Severity.SKIP,
     'description': 'skip, ,',
     'patterns': [r".*: warning: ,$"]},
    {'category': 'C/C++', 'severity': Severity.SKIP,
     'description': 'skip,',
     'patterns': [r".*: warning: $"]},
    {'category': 'C/C++', 'severity': Severity.SKIP,
     'description': 'skip, In file included from ...',
     'patterns': [r".*: warning: In file included from .+,"]},

    # warnings from clang-tidy
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy readability',
     'patterns': [r".*: .+\[readability-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy c++ core guidelines',
     'patterns': [r".*: .+\[cppcoreguidelines-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-default-arguments',
     'patterns': [r".*: .+\[google-default-arguments\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-runtime-int',
     'patterns': [r".*: .+\[google-runtime-int\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-runtime-operator',
     'patterns': [r".*: .+\[google-runtime-operator\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-runtime-references',
     'patterns': [r".*: .+\[google-runtime-references\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-build',
     'patterns': [r".*: .+\[google-build-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-explicit',
     'patterns': [r".*: .+\[google-explicit-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-readability',
     'patterns': [r".*: .+\[google-readability-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google-global',
     'patterns': [r".*: .+\[google-global-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy google- other',
     'patterns': [r".*: .+\[google-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy modernize',
     'patterns': [r".*: .+\[modernize-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy misc',
     'patterns': [r".*: .+\[misc-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy performance-faster-string-find',
     'patterns': [r".*: .+\[performance-faster-string-find\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy performance-for-range-copy',
     'patterns': [r".*: .+\[performance-for-range-copy\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy performance-implicit-cast-in-loop',
     'patterns': [r".*: .+\[performance-implicit-cast-in-loop\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy performance-unnecessary-copy-initialization',
     'patterns': [r".*: .+\[performance-unnecessary-copy-initialization\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy performance-unnecessary-value-param',
     'patterns': [r".*: .+\[performance-unnecessary-value-param\]$"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Unreachable code',
     'patterns': [r".*: warning: This statement is never executed.*UnreachableCode"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Size of malloc may overflow',
     'patterns': [r".*: warning: .* size of .* may overflow .*MallocOverflow"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Stream pointer might be NULL',
     'patterns': [r".*: warning: Stream pointer might be NULL .*unix.Stream"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Opened file never closed',
     'patterns': [r".*: warning: Opened File never closed.*unix.Stream"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer sozeof() on a pointer type',
     'patterns': [r".*: warning: .*calls sizeof.* on a pointer type.*SizeofPtr"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Pointer arithmetic on non-array variables',
     'patterns': [r".*: warning: Pointer arithmetic on non-array variables .*PointerArithm"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Subtraction of pointers of different memory chunks',
     'patterns': [r".*: warning: Subtraction of two pointers .*PointerSub"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Access out-of-bound array element',
     'patterns': [r".*: warning: Access out-of-bound array element .*ArrayBound"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Out of bound memory access',
     'patterns': [r".*: warning: Out of bound memory access .*ArrayBoundV2"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Possible lock order reversal',
     'patterns': [r".*: warning: .* Possible lock order reversal.*PthreadLock"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer Argument is a pointer to uninitialized value',
     'patterns': [r".*: warning: .* argument is a pointer to uninitialized value .*CallAndMessage"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer cast to struct',
     'patterns': [r".*: warning: Casting a non-structure type to a structure type .*CastToStruct"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer call path problems',
     'patterns': [r".*: warning: Call Path : .+"]},
    {'category': 'C/C++', 'severity': Severity.ANALYZER,
     'description': 'clang-analyzer other',
     'patterns': [r".*: .+\[clang-analyzer-.+\]$",
                  r".*: Call Path : .+$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy CERT',
     'patterns': [r".*: .+\[cert-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-tidy llvm',
     'patterns': [r".*: .+\[llvm-.+\]$"]},
    {'category': 'C/C++', 'severity': Severity.TIDY,
     'description': 'clang-diagnostic',
     'patterns': [r".*: .+\[clang-diagnostic-.+\]$"]},

    # catch-all for warnings this script doesn't know about yet
    {'category': 'C/C++', 'severity': Severity.UNKNOWN,
     'description': 'Unclassified/unrecognized warnings',
     'patterns': [r".*: warning: .+"]},
]


def project_name_and_pattern(name, pattern):
  return [name, '(^|.*/)' + pattern + '/.*: warning:']


def simple_project_pattern(pattern):
  return project_name_and_pattern(pattern, pattern)


# A list of [project_name, file_path_pattern].
# project_name should not contain comma, to be used in CSV output.
project_list = [
    simple_project_pattern('art'),
    simple_project_pattern('bionic'),
    simple_project_pattern('bootable'),
    simple_project_pattern('build'),
    simple_project_pattern('cts'),
    simple_project_pattern('dalvik'),
    simple_project_pattern('developers'),
    simple_project_pattern('development'),
    simple_project_pattern('device'),
    simple_project_pattern('doc'),
    # match external/google* before external/
    project_name_and_pattern('external/google', 'external/google.*'),
    project_name_and_pattern('external/non-google', 'external'),
    simple_project_pattern('frameworks/av/camera'),
    simple_project_pattern('frameworks/av/cmds'),
    simple_project_pattern('frameworks/av/drm'),
    simple_project_pattern('frameworks/av/include'),
    simple_project_pattern('frameworks/av/media'),
    simple_project_pattern('frameworks/av/radio'),
    simple_project_pattern('frameworks/av/services'),
    project_name_and_pattern('frameworks/av/Other', 'frameworks/av'),
    simple_project_pattern('frameworks/base'),
    simple_project_pattern('frameworks/compile'),
    simple_project_pattern('frameworks/minikin'),
    simple_project_pattern('frameworks/native'),
    simple_project_pattern('frameworks/opt'),
    simple_project_pattern('frameworks/rs'),
    simple_project_pattern('frameworks/webview'),
    simple_project_pattern('frameworks/wilhelm'),
    project_name_and_pattern('frameworks/Other', 'frameworks'),
    simple_project_pattern('hardware/akm'),
    simple_project_pattern('hardware/broadcom'),
    simple_project_pattern('hardware/google'),
    simple_project_pattern('hardware/intel'),
    simple_project_pattern('hardware/interfaces'),
    simple_project_pattern('hardware/libhardware'),
    simple_project_pattern('hardware/libhardware_legacy'),
    simple_project_pattern('hardware/qcom'),
    simple_project_pattern('hardware/ril'),
    project_name_and_pattern('hardware/Other', 'hardware'),
    simple_project_pattern('kernel'),
    simple_project_pattern('libcore'),
    simple_project_pattern('libnativehelper'),
    simple_project_pattern('ndk'),
    # match vendor/unbungled_google/packages before other packages
    simple_project_pattern('unbundled_google'),
    simple_project_pattern('packages'),
    simple_project_pattern('pdk'),
    simple_project_pattern('prebuilts'),
    simple_project_pattern('system/bt'),
    simple_project_pattern('system/connectivity'),
    simple_project_pattern('system/core'),
    simple_project_pattern('system/extras'),
    simple_project_pattern('system/gatekeeper'),
    simple_project_pattern('system/keymaster'),
    simple_project_pattern('system/libhwbinder'),
    simple_project_pattern('system/media'),
    simple_project_pattern('system/netd'),
    simple_project_pattern('system/security'),
    simple_project_pattern('system/sepolicy'),
    simple_project_pattern('system/tools'),
    simple_project_pattern('system/vold'),
    project_name_and_pattern('system/Other', 'system'),
    simple_project_pattern('toolchain'),
    simple_project_pattern('test'),
    simple_project_pattern('tools'),
    # match vendor/google* before vendor/
    project_name_and_pattern('vendor/google', 'vendor/google.*'),
    project_name_and_pattern('vendor/non-google', 'vendor'),
    # keep out/obj and other patterns at the end.
    ['out/obj',
     '.*/(gen|obj[^/]*)/(include|EXECUTABLES|SHARED_LIBRARIES|'
     'STATIC_LIBRARIES|NATIVE_TESTS)/.*: warning:'],
    ['other', '.*']  # all other unrecognized patterns
]

project_patterns = []
project_names = []
warning_messages = []
warning_records = []


def initialize_arrays():
  """Complete global arrays before they are used."""
  global project_names, project_patterns
  project_names = [p[0] for p in project_list]
  project_patterns = [re.compile(p[1]) for p in project_list]
  for w in warn_patterns:
    w['members'] = []
    if 'option' not in w:
      w['option'] = ''
    # Each warning pattern has a 'projects' dictionary, that
    # maps a project name to number of warnings in that project.
    w['projects'] = {}


initialize_arrays()


android_root = ''
platform_version = 'unknown'
target_product = 'unknown'
target_variant = 'unknown'


##### Data and functions to dump html file. ##################################

html_head_scripts = """\
  <script type="text/javascript">
  function expand(id) {
    var e = document.getElementById(id);
    var f = document.getElementById(id + "_mark");
    if (e.style.display == 'block') {
       e.style.display = 'none';
       f.innerHTML = '&#x2295';
    }
    else {
       e.style.display = 'block';
       f.innerHTML = '&#x2296';
    }
  };
  function expandCollapse(show) {
    for (var id = 1; ; id++) {
      var e = document.getElementById(id + "");
      var f = document.getElementById(id + "_mark");
      if (!e || !f) break;
      e.style.display = (show ? 'block' : 'none');
      f.innerHTML = (show ? '&#x2296' : '&#x2295');
    }
  };
  </script>
  <style type="text/css">
  th,td{border-collapse:collapse; border:1px solid black;}
  .button{color:blue;font-size:110%;font-weight:bolder;}
  .bt{color:black;background-color:transparent;border:none;outline:none;
      font-size:140%;font-weight:bolder;}
  .c0{background-color:#e0e0e0;}
  .c1{background-color:#d0d0d0;}
  .t1{border-collapse:collapse; width:100%; border:1px solid black;}
  </style>
  <script src="https://www.gstatic.com/charts/loader.js"></script>
"""


def html_big(param):
  return '<font size="+2">' + param + '</font>'


def dump_html_prologue(title):
  print '<html>\n<head>'
  print '<title>' + title + '</title>'
  print html_head_scripts
  emit_stats_by_project()
  print '</head>\n<body>'
  print html_big(title)
  print '<p>'


def dump_html_epilogue():
  print '</body>\n</head>\n</html>'


def sort_warnings():
  for i in warn_patterns:
    i['members'] = sorted(set(i['members']))


def emit_stats_by_project():
  """Dump a google chart table of warnings per project and severity."""
  # warnings[p][s] is number of warnings in project p of severity s.
  warnings = {p: {s: 0 for s in Severity.range} for p in project_names}
  for i in warn_patterns:
    s = i['severity']
    for p in i['projects']:
      warnings[p][s] += i['projects'][p]

  # total_by_project[p] is number of warnings in project p.
  total_by_project = {p: sum(warnings[p][s] for s in Severity.range)
                      for p in project_names}

  # total_by_severity[s] is number of warnings of severity s.
  total_by_severity = {s: sum(warnings[p][s] for p in project_names)
                       for s in Severity.range}

  # emit table header
  stats_header = ['Project']
  for s in Severity.range:
    if total_by_severity[s]:
      stats_header.append("<span style='background-color:{}'>{}</span>".
                          format(Severity.colors[s],
                                 Severity.column_headers[s]))
  stats_header.append('TOTAL')

  # emit a row of warning counts per project, skip no-warning projects
  total_all_projects = 0
  stats_rows = []
  for p in project_names:
    if total_by_project[p]:
      one_row = [p]
      for s in Severity.range:
        if total_by_severity[s]:
          one_row.append(warnings[p][s])
      one_row.append(total_by_project[p])
      stats_rows.append(one_row)
      total_all_projects += total_by_project[p]

  # emit a row of warning counts per severity
  total_all_severities = 0
  one_row = ['<b>TOTAL</b>']
  for s in Severity.range:
    if total_by_severity[s]:
      one_row.append(total_by_severity[s])
      total_all_severities += total_by_severity[s]
  one_row.append(total_all_projects)
  stats_rows.append(one_row)
  print '<script>'
  emit_const_string_array('StatsHeader', stats_header)
  emit_const_object_array('StatsRows', stats_rows)
  print draw_table_javascript
  print '</script>'


def dump_stats():
  """Dump some stats about total number of warnings and such."""
  known = 0
  skipped = 0
  unknown = 0
  sort_warnings()
  for i in warn_patterns:
    if i['severity'] == Severity.UNKNOWN:
      unknown += len(i['members'])
    elif i['severity'] == Severity.SKIP:
      skipped += len(i['members'])
    else:
      known += len(i['members'])
  print 'Number of classified warnings: <b>' + str(known) + '</b><br>'
  print 'Number of skipped warnings: <b>' + str(skipped) + '</b><br>'
  print 'Number of unclassified warnings: <b>' + str(unknown) + '</b><br>'
  total = unknown + known + skipped
  extra_msg = ''
  if total < 1000:
    extra_msg = ' (low count may indicate incremental build)'
  print 'Total number of warnings: <b>' + str(total) + '</b>' + extra_msg


# New base table of warnings, [severity, warn_id, project, warning_message]
# Need buttons to show warnings in different grouping options.
# (1) Current, group by severity, id for each warning pattern
#     sort by severity, warn_id, warning_message
# (2) Current --byproject, group by severity,
#     id for each warning pattern + project name
#     sort by severity, warn_id, project, warning_message
# (3) New, group by project + severity,
#     id for each warning pattern
#     sort by project, severity, warn_id, warning_message
def emit_buttons():
  print ('<button class="button" onclick="expandCollapse(1);">'
         'Expand all warnings</button>\n'
         '<button class="button" onclick="expandCollapse(0);">'
         'Collapse all warnings</button>\n'
         '<button class="button" onclick="groupBySeverity();">'
         'Group warnings by severity</button>\n'
         '<button class="button" onclick="groupByProject();">'
         'Group warnings by project</button><br>')


def all_patterns(category):
  patterns = ''
  for i in category['patterns']:
    patterns += i
    patterns += ' / '
  return patterns


def dump_fixed():
  """Show which warnings no longer occur."""
  anchor = 'fixed_warnings'
  mark = anchor + '_mark'
  print ('\n<br><p style="background-color:lightblue"><b>'
         '<button id="' + mark + '" '
         'class="bt" onclick="expand(\'' + anchor + '\');">'
         '&#x2295</button> Fixed warnings. '
         'No more occurrences. Please consider turning these into '
         'errors if possible, before they are reintroduced in to the build'
         ':</b></p>')
  print '<blockquote>'
  fixed_patterns = []
  for i in warn_patterns:
    if not i['members']:
      fixed_patterns.append(i['description'] + ' (' +
                            all_patterns(i) + ')')
    if i['option']:
      fixed_patterns.append(' ' + i['option'])
  fixed_patterns.sort()
  print '<div id="' + anchor + '" style="display:none;"><table>'
  cur_row_class = 0
  for text in fixed_patterns:
    cur_row_class = 1 - cur_row_class
    # remove last '\n'
    t = text[:-1] if text[-1] == '\n' else text
    print '<tr><td class="c' + str(cur_row_class) + '">' + t + '</td></tr>'
  print '</table></div>'
  print '</blockquote>'


def find_project_index(line):
  for p in range(len(project_patterns)):
    if project_patterns[p].match(line):
      return p
  return -1


def classify_warning(line):
  for i in range(len(warn_patterns)):
    w = warn_patterns[i]
    for cpat in w['compiled_patterns']:
      if cpat.match(line):
        w['members'].append(line)
        p = find_project_index(line)
        index = len(warning_messages)
        warning_messages.append(line)
        warning_records.append([i, p, index])
        pname = '???' if p < 0 else project_names[p]
        # Count warnings by project.
        if pname in w['projects']:
          w['projects'][pname] += 1
        else:
          w['projects'][pname] = 1
        return
      else:
        # If we end up here, there was a problem parsing the log
        # probably caused by 'make -j' mixing the output from
        # 2 or more concurrent compiles
        pass


def compile_patterns():
  """Precompiling every pattern speeds up parsing by about 30x."""
  for i in warn_patterns:
    i['compiled_patterns'] = []
    for pat in i['patterns']:
      i['compiled_patterns'].append(re.compile(pat))


def find_android_root(path):
  """Set and return android_root path if it is found."""
  global android_root
  parts = path.split('/')
  for idx in reversed(range(2, len(parts))):
    root_path = '/'.join(parts[:idx])
    # Android root directory should contain this script.
    if os.path.exists(root_path + '/build/tools/warn.py'):
      android_root = root_path
      return root_path
  return ''


def remove_android_root_prefix(path):
  """Remove android_root prefix from path if it is found."""
  if path.startswith(android_root):
    return path[1 + len(android_root):]
  else:
    return path


def normalize_path(path):
  """Normalize file path relative to android_root."""
  # If path is not an absolute path, just normalize it.
  path = os.path.normpath(path)
  if path[0] != '/':
    return path
  # Remove known prefix of root path and normalize the suffix.
  if android_root or find_android_root(path):
    return remove_android_root_prefix(path)
  else:
    return path


def normalize_warning_line(line):
  """Normalize file path relative to android_root in a warning line."""
  # replace fancy quotes with plain ol' quotes
  line = line.replace('‘', "'")
  line = line.replace('’', "'")
  line = line.strip()
  first_column = line.find(':')
  if first_column > 0:
    return normalize_path(line[:first_column]) + line[first_column:]
  else:
    return line


def parse_input_file():
  """Parse input file, match warning lines."""
  global platform_version
  global target_product
  global target_variant
  infile = open(args.buildlog, 'r')
  line_counter = 0

  warning_pattern = re.compile('.* warning:.*')
  compile_patterns()

  # read the log file and classify all the warnings
  warning_lines = set()
  for line in infile:
    if warning_pattern.match(line):
      line = normalize_warning_line(line)
      if line not in warning_lines:
        classify_warning(line)
        warning_lines.add(line)
    elif line_counter < 50:
      # save a little bit of time by only doing this for the first few lines
      line_counter += 1
      m = re.search('(?<=^PLATFORM_VERSION=).*', line)
      if m is not None:
        platform_version = m.group(0)
      m = re.search('(?<=^TARGET_PRODUCT=).*', line)
      if m is not None:
        target_product = m.group(0)
      m = re.search('(?<=^TARGET_BUILD_VARIANT=).*', line)
      if m is not None:
        target_variant = m.group(0)


# Return s with escaped quotation characters.
def escape_string(s):
  return s.replace('"', '\\"')


# Return s without trailing '\n' and escape the quotation characters.
def strip_escape_string(s):
  if not s:
    return s
  s = s[:-1] if s[-1] == '\n' else s
  return escape_string(s)


def emit_warning_array(name):
  print 'var warning_{} = ['.format(name)
  for i in range(len(warn_patterns)):
    print '{},'.format(warn_patterns[i][name])
  print '];'


def emit_warning_arrays():
  emit_warning_array('severity')
  print 'var warning_description = ['
  for i in range(len(warn_patterns)):
    if warn_patterns[i]['members']:
      print '"{}",'.format(escape_string(warn_patterns[i]['description']))
    else:
      print '"",'  # no such warning
  print '];'

scripts_for_warning_groups = """
  function compareMessages(x1, x2) { // of the same warning type
    return (WarningMessages[x1[2]] <= WarningMessages[x2[2]]) ? -1 : 1;
  }
  function byMessageCount(x1, x2) {
    return x2[2] - x1[2];  // reversed order
  }
  function bySeverityMessageCount(x1, x2) {
    // orer by severity first
    if (x1[1] != x2[1])
      return  x1[1] - x2[1];
    return byMessageCount(x1, x2);
  }
  const ParseLinePattern = /^([^ :]+):(\\d+):(.+)/;
  function addURL(line) {
    if (FlagURL == "") return line;
    if (FlagSeparator == "") {
      return line.replace(ParseLinePattern,
        "<a href='" + FlagURL + "/$1'>$1</a>:$2:$3");
    }
    return line.replace(ParseLinePattern,
      "<a href='" + FlagURL + "/$1" + FlagSeparator + "$2'>$1:$2</a>:$3");
  }
  function createArrayOfDictionaries(n) {
    var result = [];
    for (var i=0; i<n; i++) result.push({});
    return result;
  }
  function groupWarningsBySeverity() {
    // groups is an array of dictionaries,
    // each dictionary maps from warning type to array of warning messages.
    var groups = createArrayOfDictionaries(SeverityColors.length);
    for (var i=0; i<Warnings.length; i++) {
      var w = Warnings[i][0];
      var s = WarnPatternsSeverity[w];
      var k = w.toString();
      if (!(k in groups[s]))
        groups[s][k] = [];
      groups[s][k].push(Warnings[i]);
    }
    return groups;
  }
  function groupWarningsByProject() {
    var groups = createArrayOfDictionaries(ProjectNames.length);
    for (var i=0; i<Warnings.length; i++) {
      var w = Warnings[i][0];
      var p = Warnings[i][1];
      var k = w.toString();
      if (!(k in groups[p]))
        groups[p][k] = [];
      groups[p][k].push(Warnings[i]);
    }
    return groups;
  }
  var GlobalAnchor = 0;
  function createWarningSection(header, color, group) {
    var result = "";
    var groupKeys = [];
    var totalMessages = 0;
    for (var k in group) {
       totalMessages += group[k].length;
       groupKeys.push([k, WarnPatternsSeverity[parseInt(k)], group[k].length]);
    }
    groupKeys.sort(bySeverityMessageCount);
    for (var idx=0; idx<groupKeys.length; idx++) {
      var k = groupKeys[idx][0];
      var messages = group[k];
      var w = parseInt(k);
      var wcolor = SeverityColors[WarnPatternsSeverity[w]];
      var description = WarnPatternsDescription[w];
      if (description.length == 0)
          description = "???";
      GlobalAnchor += 1;
      result += "<table class='t1'><tr bgcolor='" + wcolor + "'><td>" +
                "<button class='bt' id='" + GlobalAnchor + "_mark" +
                "' onclick='expand(\\"" + GlobalAnchor + "\\");'>" +
                "&#x2295</button> " +
                description + " (" + messages.length + ")</td></tr></table>";
      result += "<div id='" + GlobalAnchor +
                "' style='display:none;'><table class='t1'>";
      var c = 0;
      messages.sort(compareMessages);
      for (var i=0; i<messages.length; i++) {
        result += "<tr><td class='c" + c + "'>" +
                  addURL(WarningMessages[messages[i][2]]) + "</td></tr>";
        c = 1 - c;
      }
      result += "</table></div>";
    }
    if (result.length > 0) {
      return "<br><span style='background-color:" + color + "'><b>" +
             header + ": " + totalMessages +
             "</b></span><blockquote><table class='t1'>" +
             result + "</table></blockquote>";

    }
    return "";  // empty section
  }
  function generateSectionsBySeverity() {
    var result = "";
    var groups = groupWarningsBySeverity();
    for (s=0; s<SeverityColors.length; s++) {
      result += createWarningSection(SeverityHeaders[s], SeverityColors[s], groups[s]);
    }
    return result;
  }
  function generateSectionsByProject() {
    var result = "";
    var groups = groupWarningsByProject();
    for (i=0; i<groups.length; i++) {
      result += createWarningSection(ProjectNames[i], 'lightgrey', groups[i]);
    }
    return result;
  }
  function groupWarnings(generator) {
    GlobalAnchor = 0;
    var e = document.getElementById("warning_groups");
    e.innerHTML = generator();
  }
  function groupBySeverity() {
    groupWarnings(generateSectionsBySeverity);
  }
  function groupByProject() {
    groupWarnings(generateSectionsByProject);
  }
"""


# Emit a JavaScript const string
def emit_const_string(name, value):
  print 'const ' + name + ' = "' + escape_string(value) + '";'


# Emit a JavaScript const integer array.
def emit_const_int_array(name, array):
  print 'const ' + name + ' = ['
  for n in array:
    print str(n) + ','
  print '];'


# Emit a JavaScript const string array.
def emit_const_string_array(name, array):
  print 'const ' + name + ' = ['
  for s in array:
    print '"' + strip_escape_string(s) + '",'
  print '];'


# Emit a JavaScript const object array.
def emit_const_object_array(name, array):
  print 'const ' + name + ' = ['
  for x in array:
    print str(x) + ','
  print '];'


def emit_js_data():
  """Dump dynamic HTML page's static JavaScript data."""
  emit_const_string('FlagURL', args.url if args.url else '')
  emit_const_string('FlagSeparator', args.separator if args.separator else '')
  emit_const_string_array('SeverityColors', Severity.colors)
  emit_const_string_array('SeverityHeaders', Severity.headers)
  emit_const_string_array('SeverityColumnHeaders', Severity.column_headers)
  emit_const_string_array('ProjectNames', project_names)
  emit_const_int_array('WarnPatternsSeverity',
                       [w['severity'] for w in warn_patterns])
  emit_const_string_array('WarnPatternsDescription',
                          [w['description'] for w in warn_patterns])
  emit_const_string_array('WarnPatternsOption',
                          [w['option'] for w in warn_patterns])
  emit_const_string_array('WarningMessages', warning_messages)
  emit_const_object_array('Warnings', warning_records)

draw_table_javascript = """
google.charts.load('current', {'packages':['table']});
google.charts.setOnLoadCallback(drawTable);
function drawTable() {
  var data = new google.visualization.DataTable();
  data.addColumn('string', StatsHeader[0]);
  for (var i=1; i<StatsHeader.length; i++) {
    data.addColumn('number', StatsHeader[i]);
  }
  data.addRows(StatsRows);
  for (var i=0; i<StatsRows.length; i++) {
    for (var j=0; j<StatsHeader.length; j++) {
      data.setProperty(i, j, 'style', 'border:1px solid black;');
    }
  }
  var table = new google.visualization.Table(document.getElementById('stats_table'));
  table.draw(data, {allowHtml: true, alternatingRowStyle: true});
}
"""


def dump_html():
  """Dump the html output to stdout."""
  dump_html_prologue('Warnings for ' + platform_version + ' - ' +
                     target_product + ' - ' + target_variant)
  dump_stats()
  print '<br><div id="stats_table"></div><br>'
  print '\n<script>'
  emit_js_data()
  print scripts_for_warning_groups
  print '</script>'
  emit_buttons()
  # Warning messages are grouped by severities or project names.
  print '<br><div id="warning_groups"></div>'
  if args.byproject:
    print '<script>groupByProject();</script>'
  else:
    print '<script>groupBySeverity();</script>'
  dump_fixed()
  dump_html_epilogue()


##### Functions to count warnings and dump csv file. #########################


def description_for_csv(category):
  if not category['description']:
    return '?'
  return category['description']


def string_for_csv(s):
  # Only some Java warning desciptions have used quotation marks.
  # TODO(chh): if s has double quote character, s should be quoted.
  if ',' in s:
    # TODO(chh): replace a double quote with two double quotes in s.
    return '"{}"'.format(s)
  return s


def count_severity(sev, kind):
  """Count warnings of given severity."""
  total = 0
  for i in warn_patterns:
    if i['severity'] == sev and i['members']:
      n = len(i['members'])
      total += n
      warning = string_for_csv(kind + ': ' + description_for_csv(i))
      print '{},,{}'.format(n, warning)
      # print number of warnings for each project, ordered by project name.
      projects = i['projects'].keys()
      projects.sort()
      for p in projects:
        print '{},{},{}'.format(i['projects'][p], p, warning)
  print '{},,{}'.format(total, kind + ' warnings')
  return total


# dump number of warnings in csv format to stdout
def dump_csv():
  """Dump number of warnings in csv format to stdout."""
  sort_warnings()
  total = 0
  for s in Severity.range:
    total += count_severity(s, Severity.column_headers[s])
  print '{},,{}'.format(total, 'All warnings')


def main():
  parse_input_file()
  if args.gencsv:
    dump_csv()
  else:
    dump_html()


# Run main function if warn.py is the main program.
if __name__ == '__main__':
  main()