.golangci.yml

# This code is licensed under the terms of the MIT license.

run:
  # Timeout for analysis, e.g. 30s, 5m.
  # Default: 1m
  timeout: 3m

# This file contains only configs which differ from defaults.
# All possible options can be found here https://github.com/golangci/golangci-lint/blob/master/.golangci.reference.yml
linters-settings:
  staticcheck:
    checks:
      - all
      - '-SA1019' # Ignore deprecated for now
  cyclop:
    # The maximal code complexity to report.
    # Default: 10
    max-complexity: 30
    # The maximal average package complexity.
    # If it's higher than 0.0 (float) the check is enabled
    # Default: 0.0
    package-average: 10.0

  errcheck:
    # Report about not checking of errors in type assertions: `a := b.(MyStruct)`.
    # Such cases aren't reported by default.
    # Default: false
    check-type-assertions: true

  funlen:
    # Checks the number of lines in a function.
    # If lower than 0, disable the check.
    # Default: 60
    lines: 100
    # Checks the number of statements in a function.
    # If lower than 0, disable the check.
    # Default: 40
    statements: 50

  gocognit:
    # Minimal code complexity to report
    # Default: 30 (but we recommend 10-20)
    min-complexity: 20

  gomnd:
    # List of function patterns to exclude from analysis.
    # Values always ignored: `time.Date`
    # Default: []
    ignored-functions:
      - os.Chmod
      - os.Mkdir
      - os.MkdirAll
      - os.OpenFile
      - os.WriteFile
      - strconv.FormatFloat
      - strconv.FormatInt
      - strconv.FormatUint
      - strconv.ParseFloat
      - strconv.ParseInt
      - strconv.ParseUint

  govet:
    # Enable all analyzers.
    # Default: false
    enable-all: true
    # Disable analyzers by name.
    # Run `go tool vet help` to see all analyzers.
    # Default: []
    disable:
      - fieldalignment # too strict
      - shadow # too many false positives

  nakedret:
    # Make an issue if func has more lines of code than this setting, and it has naked returns.
    # Default: 30
    max-func-lines: 10

  nolintlint:
    # Exclude following linters from requiring an explanation.
    # Default: []
    allow-no-explanation: [ funlen, gocognit, lll ]
    # Enable to require an explanation of nonzero length after each nolint directive.
    # Default: false
    require-explanation: true
    # Enable to require nolint directives to mention the specific linter being suppressed.
    # Default: false
    require-specific: true

  tenv:
    # The option `all` will run against whole test files (`_test.go`) regardless of method/function signatures.
    # Otherwise, only methods that take `*testing.T`, `*testing.B`, and `testing.TB` as arguments are checked.
    # Default: false
    all: true

  gosec:
    excludes:
      - G107 # variables in URLs
      - G404 # use of weak random generator
      - G115 # Disable for now due to the *many* warnings

  gocritic:
    disabled-checks:
      - captLocal

linters:
  disable-all: true
  enable:
    ## enabled by default
    - errcheck # checking for unchecked errors, these unchecked errors can be critical bugs in some cases
    - gosimple # specializes in simplifying a code
    - govet # reports suspicious constructs, such as Printf calls whose arguments do not align with the format string
    - ineffassign # detects when assignments to existing variables are not used
    - staticcheck # is a go vet on steroids, applying a ton of static analysis checks
    - typecheck # like the front-end of a Go compiler, parses and type-checks Go code
    - unused # checks for unused constants, variables, functions and types
    ## disabled by default
    - asasalint # checks for pass []any as any in variadic func(...any)
    - asciicheck # checks that your code does not contain non-ASCII identifiers
    - bidichk # checks for dangerous unicode character sequences
    - bodyclose # checks whether HTTP response body is closed successfully
    - contextcheck # checks the function whether use a non-inherited context
    - cyclop # checks function and package cyclomatic complexity
    - dupl # tool for code clone detection
    - durationcheck # checks for two durations multiplied together
    - errname # checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error
    - errorlint # finds code that will cause problems with the error wrapping scheme introduced in Go 1.13
    - execinquery # checks query string in Query function which reads your Go src files and warning it finds
    - exhaustive # checks exhaustiveness of enum switch statements
    - exportloopref # checks for pointers to enclosing loop variables
    - forbidigo # forbids identifiers
    - funlen # tool for detection of long functions
    #- gochecknoglobals # checks that no global variables exist
    #- gochecknoinits # checks that no init functions are present in Go code
    - gocognit # computes and checks the cognitive complexity of functions
    - goconst # finds repeated strings that could be replaced by a constant
    - gocritic # provides diagnostics that check for bugs, performance and style issues
    - gocyclo # computes and checks the cyclomatic complexity of functions
    #- godot # checks if comments end in a period
    #- goimports # in addition to fixing imports, goimports also formats your code in the same style as gofmt
    #- gomnd # detects magic numbers                                                                                  - ENABLE LATER
    - gomoddirectives # manages the use of 'replace', 'retract', and 'excludes' directives in go.mod
    - gomodguard # allow and block lists linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations
    - goprintffuncname # checks that printf-like functions are named with f at the end
    - gosec # inspects source code for security problems
    - lll # reports long lines
    #- makezero # finds slice declarations with non-zero initial length
    - nakedret # finds naked returns in functions greater than a specified function length
    - nestif # reports deeply nested if statements
    - nilerr # finds the code that returns nil even if it checks that the error is not nil
    - nilnil # checks that there is no simultaneous return of nil error and an invalid value
    #- noctx # finds sending http request without context.Context
    - nolintlint # reports ill-formed or insufficient nolint directives
    #- nonamedreturns # reports all named returns
    - nosprintfhostport # checks for misuse of Sprintf to construct a host with port in a URL
    - predeclared # finds code that shadows one of Go's predeclared identifiers
    #- promlinter # checks Prometheus metrics naming via promlint
    - reassign # checks that package variables are not reassigned
    - revive # fast, configurable, extensible, flexible, and beautiful linter for Go, drop-in replacement of golint
    #- rowserrcheck # checks whether Err of rows is checked successfully
    #- sqlclosecheck # checks that sql.Rows and sql.Stmt are closed
    - stylecheck # is a replacement for golint
    - tenv # detects using os.Setenv instead of t.Setenv since Go1.17
    #- testpackage # makes you use a separate _test package
    - tparallel # detects inappropriate usage of t.Parallel() method in your Go test codes
    #- unconvert # removes unnecessary type conversions
    - unparam # reports unused function parameters
    - usestdlibvars # detects the possibility to use variables/constants from the Go standard library
    #- wastedassign # finds wasted assignment statements
    #- whitespace # detects leading and trailing whitespace

    ## you may want to enable
    #- decorder # checks declaration order and count of types, constants, variables and functions
    #- exhaustruct # checks if all structure fields are initialized
    #- gci # controls golang package import order and makes it always deterministic
    #- godox # detects FIXME, TODO and other comment keywords
    #- goheader # checks is file header matches to pattern
    - interfacebloat # checks the number of methods inside an interface
    #- ireturn # accept interfaces, return concrete types
    #- prealloc # [premature optimization, but can be used in some cases] finds slice declarations that could potentially be preallocated
    #- varnamelen # [great idea, but too many false positives] checks that the length of a variable's name matches its scope
    #- wrapcheck # checks that errors returned from external packages are wrapped

    ## disabled
    #- containedctx # detects struct contained context.Context field
    #- depguard # [replaced by gomodguard] checks if package imports are in a list of acceptable packages
    #- dogsled # checks assignments with too many blank identifiers (e.g. x, _, _, _, := f())
    #- errchkjson # [don't see profit + I'm against of omitting errors like in the first example https://github.com/breml/errchkjson] checks types passed to the json encoding functions. Reports unsupported types and optionally reports occasions, where the check for the returned error can be omitted
    #- forcetypeassert # [replaced by errcheck] finds forced type assertions
    #- goerr113 # [too strict] checks the errors handling expressions
    #- gofmt # [replaced by goimports] checks whether code was gofmt-ed
    #- gofumpt # [replaced by goimports, gofumports is not available yet] checks whether code was gofumpt-ed
    #- grouper # analyzes expression groups
    #- importas # enforces consistent import aliases
    #- logrlint # [owner archived repository] checks logr arguments
    #- maintidx # measures the maintainability index of each function
    #- misspell # [useless] finds commonly misspelled English words in comments
    #- nlreturn # [too strict and mostly code is not more readable] checks for a new line before return and branch statements to increase code clarity
    #- paralleltest # [too many false positives] detects missing usage of t.Parallel() method in your Go test
    #- tagliatelle # checks the struct tags
    #- thelper # detects golang test helpers without t.Helper() call and checks the consistency of test helpers
    #- wsl # [too strict and mostly code is not more readable] whitespace linter forces you to use empty lines

    ## deprecated
    #- deadcode # [deprecated, replaced by unused] finds unused code
    #- exhaustivestruct # [deprecated, replaced by exhaustruct] checks if all struct's fields are initialized
    #- golint # [deprecated, replaced by revive] golint differs from gofmt. Gofmt reformats Go source code, whereas golint prints out style mistakes
    #- ifshort # [deprecated] checks that your code uses short syntax for if-statements whenever possible
    #- interfacer # [deprecated] suggests narrower interface types
    #- maligned # [deprecated, replaced by govet fieldalignment] detects Go structs that would take less memory if their fields were sorted
    #- nosnakecase # [deprecated, replaced by revive var-naming] detects snake case of variable naming and function name
    #- scopelint # [deprecated, replaced by exportloopref] checks for unpinned variables in go programs
    #- structcheck # [deprecated, replaced by unused] finds unused struct fields
    #- varcheck # [deprecated, replaced by unused] finds unused global variables and constants


issues:
  # Maximum count of issues with the same text.
  # Set to 0 to disable.
  # Default: 3
  max-same-issues: 50

  exclude-rules:
    - source: "^//\\s*go:generate\\s"
      linters: [ lll ]
    - source: "(noinspection|TODO)"
      linters: [ godot ]
    - source: "//noinspection"
      linters: [ gocritic ]
    - source: "^\\s+if _, ok := err\\.\\([^.]+\\.InternalError\\); ok {"
      linters: [ errorlint ]
    - path: ".skeleton"
      linters:
        - unused
        - unparam
    - path: ".*_test.go"
      linters:
        - bodyclose
        - dupl
        - errcheck
        - funlen
        - gochecknoglobals
        - gocognit
        - goconst
        - gosec
        - lll
        - noctx
        - unparam
        - wrapcheck
    - linters:
        - gocritic
      text: "appendAssign:"
    - linters:
        - revive
      text: "unexported-return:"
    - linters:
        - govet
      text: "shadow: declaration of \"err\" shadows declaration"
    - path: 'group.go'
      linters:
        - interfacebloat
    - path: 'group/edwards25519/scalar.go'
      linters:
        - ineffassign
        - funlen
    - path: 'group/edwards25519/const.go'
      linters:
        - lll
    - path: 'group/edwards25519/fe.go'
      linters:
        - funlen
    - path: "share/dkg/pedersen"
      linters:
        - gocognit
        - funlen
        - gocyclo
        - cyclop
    - path: "group/edwards25519/scalar.go"
      linters:
        - ineffassign
    - path: "pairing/(circl_bls12381|bn254)/."
      linters:
        - errcheck #TODO: proper error handling
      text: "Error return value is not checked"
    - path: "encrypt/ibe/ibe.go"
      linters:
        - stylecheck # Keep variable name as is
      text: "var Gid should be GID|var hrGid should be hrGID|rGid should be rGID|var hGidT should be hGIDT|var GidT should be GIDT"
    - path: "pairing/bls12381/circl/*|pairing/bls12381/kilic/*"
      linters:
        - errcheck
      text: "Error return value is not checked"
    - path: "benchmark/*"
      linters:
        - forbidigo