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integerdecrement.go
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/
integerdecrement.go
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package integerdecrement
import (
"go/ast"
"go/token"
"go/types"
"strconv"
"github.com/gtramontina/ooze/viruses"
)
type IntegerDecrement struct{}
// New returns a new IntegerDecrement virus.
//
// It decrements integers by `1`.
func New() *IntegerDecrement {
return &IntegerDecrement{}
}
func (v *IntegerDecrement) Incubate(node ast.Node, _ *types.Info) []*viruses.Infection {
literal, ok := node.(*ast.BasicLit)
if !ok || literal.Kind != token.INT {
return nil
}
originalValue := literal.Value
originalInteger, err := strconv.Atoi(originalValue)
if err != nil {
return nil
}
originalInteger--
mutatedValue := strconv.Itoa(originalInteger)
return []*viruses.Infection{
viruses.NewInfection(
"Integer Decrement",
func() { literal.Value = mutatedValue },
func() { literal.Value = originalValue },
),
}
}