// The returned regexp may share structure with or be the original.
func (re *Regexp) Simplify() *Regexp {
	if re == nil {
		return nil
	}
	switch re.Op {
	case OpCapture, OpConcat, OpAlternate:
		// Simplify children, building new Regexp if children change.
		nre := re
		for i, sub := range re.Sub {
			nsub := sub.Simplify()
			if nre == re && nsub != sub {
				// Start a copy.
				nre = new(Regexp)
				*nre = *re

						s.simplifyLiteral(ktyp, keyType, t.Key, &t.Key)
					}
					x = t.Value
					px = &t.Value
				}
				s.simplifyLiteral(typ, eltType, x, px)
			}
			// node was simplified - stop walk (there are no subnodes to simplify)
			return nil
		}

	case *ast.SliceExpr:
		// a slice expression of the form: s[a:len(s)]
		// can be simplified to: s[a:]
		// if s is "simple enough" (for now we only accept identifiers)
		//

}

type simplifier interface {
	simplify(LineString, bool) (LineString, []int)
}

func lineString(s simplifier, ls LineString) LineString {
	return runSimplify(s, ls)
}

func runSimplify(s simplifier, ls LineString) LineString {
	if len(ls) <= 2 {
		return ls
	}
	ls, _ = s.simplify(ls, false)
	return ls
}

func (s *DouglasPeuckerSimplifier) simplify(ls LineString, wim bool) (LineString, []int) {

		re, err := Parse(tt.Regexp, MatchNL|Perl&^OneLine)
		if err != nil {
			t.Errorf("Parse(%#q) = error %v", tt.Regexp, err)
			continue
		}
		s := re.Simplify().String()
		if s != tt.Simple {
			t.Errorf("Simplify(%#q) = %#q, want %#q", tt.Regexp, s, tt.Simple)
		}
	}

        readability-inconsistent-declaration-parameter-name,
        readability-misleading-indentation,
        readability-redundant-control-flow,
        readability-simplify-boolean-expr,
        readability-simplify-subscript-expr,
        readability-use-anyofallof
        # LINT.ThenChange(METADATA:checks)

CheckOptions:
  # LINT.IfChange(check-options)

	}
}

// Write wraps the Hash.Write function call
// Hash.Write error always return nil, this func simplify caller handle error
func (i *instance) Write(p []byte) (n int) {
	n, _ = i.hash.Write(p)
	return
}

// Write wraps the Hash.Write function call
// Hash.Write error always return nil, this func simplify caller handle error
func (i *instance) WriteString(s string) (n int) {
	n, _ = i.hash.WriteString(s)
	return
}

apiVersion: release-notes/v2
kind: bug-fix
area: installation
issue:
  - 50958
releaseNotes:
- |

from fastapi.routing import APIRoute

app = FastAPI()


@app.get("/items/")
async def read_items():
    return [{"item_id": "Foo"}]


def use_route_names_as_operation_ids(app: FastAPI) -> None:
    """
    Simplify operation IDs so that generated API clients have simpler function
    names.

    Should be called only after all routes have been added.
    """
    for route in app.routes:
        if isinstance(route, APIRoute):

linters-settings:
  gofumpt:
    simplify: true

  misspell:
    locale: US

  staticcheck:
    checks: ['all', '-ST1005', '-ST1000', '-SA4000', '-SA9004', '-SA1019', '-SA1008', '-U1000', '-ST1016']

linters:
  disable-all: true
  enable:
    - durationcheck
    - gocritic
    - gofumpt
    - goimports
    - gomodguard
    - govet
    - ineffassign
    - misspell
    - revive
    - staticcheck
    - tenv

    }

    @Override
    public ExcludeSpec anyOf(ExcludeSpec one, ExcludeSpec two) {
        return simplify(ExcludeAllOf.class, one, two, (left, right) -> doUnion(ImmutableSet.of(left, right)));
    }

    @Override
    public ExcludeSpec allOf(ExcludeSpec one, ExcludeSpec two) {
        return simplify(ExcludeAnyOf.class, one, two, (left, right) -> doIntersect(ImmutableSet.of(left, right)));
    }