omissis/go-jsonschema

package generator

import (
    "fmt"

    "github.com/atombender/go-jsonschema/pkg/codegen"
    "github.com/atombender/go-jsonschema/pkg/schemas"
)

type output struct {
    file          *codegen.File
    declsByName   map[string]*codegen.TypeDecl
    declsBySchema map[*schemas.Type]*codegen.TypeDecl
    warner        func(string)
}

func (o *output) uniqueTypeName(name string) string {
    v, ok := o.declsByName[name]

    if !ok || (ok && v.Type == nil) {
        return name
    }

    count := 1

    for {
        suffixed := fmt.Sprintf("%s_%d", name, count)
        if _, ok := o.declsByName[suffixed]; !ok {
            o.warner(fmt.Sprintf(
                "Multiple types map to the name %q; declaring duplicate as %q instead", name, suffixed))

            return suffixed
        }

        count++
    }
}