/
options.go
38 lines (31 loc) · 883 Bytes
/
options.go
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package options
import (
"bytes"
"fmt"
"go/format"
"github.com/SVz777/z_generator/gen"
"github.com/SVz777/z_generator/gen/parser"
)
const GenType = "options"
type Generator struct {
}
func NewGenerator() gen.IGen {
return &Generator{}
}
func (g *Generator) Gen(v *parser.Struct) []byte {
out := &bytes.Buffer{}
out.WriteString(fmt.Sprintf("func (opts *%s) Update(opt ...Option) {\n", v.Type))
out.WriteString("for _, o := range opt {\n")
out.WriteString("o(opts)")
out.WriteString("}\n")
out.WriteString("}\n")
for _, field := range v.Field {
out.WriteString(fmt.Sprintf("func With%s(v %s) Option {\n", field.Name, field.Type))
out.WriteString(fmt.Sprintf("return func(opts *%s) {\n", v.Type))
out.WriteString(fmt.Sprintf("opts.%s = v\n", field.Name))
out.WriteString("}\n")
out.WriteString("}\n")
}
ret, _ := format.Source(out.Bytes())
return ret
}