/
enums.go
65 lines (58 loc) · 1.89 KB
/
enums.go
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package golang
import (
"fmt"
"io"
"github.com/lemon-mint/vstruct/ir"
)
func writeEnums(w io.Writer, i *ir.IR) {
for _, e := range i.Enums {
fmt.Fprintf(w, "type %s uint%d\n", NameConv(e.Name), e.Size*8)
fmt.Fprintf(w, "const (\n")
for i, o := range e.Options {
fmt.Fprintf(w, "%s_%s %s = %d\n", NameConv(e.Name), NameConv(o), NameConv(e.Name), i)
}
// Write Max
fmt.Fprintf(w, "VSTRUCT_ENUM_%s_MAX = %d\n", NameConv(e.Name), len(e.Options)-1)
fmt.Fprintf(w, ")\n\n")
fmt.Fprintf(w, "func (e %s) String() string {\n", NameConv(e.Name))
fmt.Fprintf(w, "switch e {\n")
for _, o := range e.Options {
fmt.Fprintf(w, "case %s_%s:\n", NameConv(e.Name), NameConv(o))
fmt.Fprintf(w, "return \"%s\"\n", NameConv(o))
}
fmt.Fprintf(w, "}\n")
fmt.Fprintf(w, "return \"\"\n")
fmt.Fprintf(w, "}\n\n")
fmt.Fprintf(w, "func (e %s) Match(\n", NameConv(e.Name))
for _, o := range e.Options {
fmt.Fprintf(w, "on%s func(),\n", NameConv(o))
}
fmt.Fprintf(w, ") {\n")
fmt.Fprintf(w, "switch e {\n")
for _, o := range e.Options {
fmt.Fprintf(w, "case %s_%s:\n", NameConv(e.Name), NameConv(o))
fmt.Fprintf(w, "on%s()\n", NameConv(o))
}
fmt.Fprintf(w, "}\n")
fmt.Fprintf(w, "}\n\n")
fmt.Fprintf(w, "func (e %s) MatchS(s struct {\n", NameConv(e.Name))
for _, o := range e.Options {
fmt.Fprintf(w, "on%s func()\n", NameConv(o))
}
fmt.Fprintf(w, "}) {\n")
fmt.Fprintf(w, "switch e {\n")
for _, o := range e.Options {
fmt.Fprintf(w, "case %s_%s:\n", NameConv(e.Name), NameConv(o))
fmt.Fprintf(w, "s.on%s()\n", NameConv(o))
}
fmt.Fprintf(w, "}\n")
fmt.Fprintf(w, "}\n\n")
fmt.Fprintf(w, "var _ struct{} = func() struct{} {\n")
// Write AssertEnum
fmt.Fprintf(w, "var _v [1]struct{}\n")
for i, o := range e.Options {
fmt.Fprintf(w, "_v[%s_%s-%d] = struct{}{}\n", NameConv(e.Name), NameConv(o), i)
}
fmt.Fprint(w, "return struct{}{}\n}()\n\n")
}
}