93 lines
1.4 KiB
Go
93 lines
1.4 KiB
Go
package main
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import (
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"bufio"
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"fmt"
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"io"
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"os"
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"path"
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pcl "pcl/interp"
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)
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func main() {
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var (
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interp *pcl.Interp
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f *os.File
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r *bufio.Reader
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c rune
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node *pcl.Cnode_t
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v pcl.Value_t
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err error
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)
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if len(os.Args) != 2 {
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fmt.Printf("Usage: %s filename\n", path.Base(os.Args[0]))
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goto oops
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}
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interp, err = pcl.NewInterp(1000, true)
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if err != nil {
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fmt.Printf("Error %s\n", err.Error())
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goto oops
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}
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f, err = os.Open(os.Args[1])
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if err != nil {
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fmt.Printf("Error %s\n", err.Error())
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goto oops
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}
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interp.BeginFeed()
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r = bufio.NewReader(f)
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for {
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c, _, err = r.ReadRune()
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if err != nil {
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if err == io.EOF {
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break
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}
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fmt.Printf("Error in ReadRune - %s\n", err.Error())
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goto oops
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}
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err = interp.FeedRune(c)
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if err != nil {
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fmt.Printf("Error in FeedRune - %s\n", err.Error())
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goto oops
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}
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}
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node, err = interp.EndFeed()
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if err != nil {
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fmt.Printf("Error in EndFeed %s\n", err.Error())
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goto oops
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}
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interp.Dump(node)
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fmt.Printf("------------- Executing ----------------\n")
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v, err = interp.Execute(node)
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if err != nil {
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fmt.Printf("Error in Execute - %s\n", err.Error())
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goto oops
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}
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if v == nil {
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panic("return value mut not be nil")
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}
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fmt.Printf("RETURN VALUE = [%s]\n", *v.(*string))
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interp.Close()
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f.Close()
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os.Exit(0)
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oops:
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if interp != nil {
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interp.Close()
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}
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if f != nil {
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f.Close()
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}
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os.Exit(1)
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}
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