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package main
import (
"fmt"
"log"
"os"
"github.com/gnolang/parscan/codegen"
"github.com/gnolang/parscan/lang/golang"
"github.com/gnolang/parscan/parser"
"github.com/gnolang/parscan/vm0"
"github.com/gnolang/parscan/vm1"
)
func main() {
log.SetFlags(log.Lshortfile)
buf, err := os.ReadFile("/dev/stdin")
if err != nil {
log.Fatal(err)
}
run := run0
if len(os.Args) > 1 {
v := "vm" + os.Args[1]
switch v {
case "vm0":
case "vm1":
run = run1
default:
log.Fatal("invalid argument", os.Args[1])
}
}
if err := run(string(buf)); err != nil {
log.Fatal(err)
}
}
func run0(src string) error {
i := vm0.New(golang.GoParser)
nodes, err := i.Parse(src)
if err != nil {
return err
}
i.Adot(nodes, os.Getenv("DOT"))
for _, n := range nodes {
if _, err := i.Run(n, ""); err != nil {
return err
}
}
return nil
}
func run1(src string) (err error) {
m := &vm1.Machine{}
c := codegen.New()
c.AddSym(fmt.Println, "println", false)
n := &parser.Node{}
if n.Child, err = golang.GoParser.Parse(src); err != nil {
return err
}
n.Dot(os.Getenv("DOT"), "")
if err = c.CodeGen(n); err != nil {
return err
}
c.Emit(n, vm1.Exit)
log.Println("data:", c.Data)
log.Println("code:", vm1.Disassemble(c.Code))
for _, v := range c.Data {
m.Push(v)
}
m.PushCode(c.Code)
m.SetIP(c.Entry)
m.Run()
return
}
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