codegen: add interpreter tests

Also simplify project structure. The executable is now produced in
the root directory. Work in progress.

1 files changed, 0 insertions, 71 deletions

diff --git a/cmd/gint/main.go b/cmd/gint/main.go
deleted file mode 100644
index 037614c..0000000
--- a/cmd/gint/main.go
+++ /dev/null
@@ -1,71 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"os"
-
-	"github.com/gnolang/parscan/codegen"
-	"github.com/gnolang/parscan/lang/golang"
-	"github.com/gnolang/parscan/scanner"
-	"github.com/gnolang/parscan/vm0"
-)
-
-type Interpreter interface {
-	Eval(string) (any, error)
-}
-
-func main() {
-	log.SetFlags(log.Lshortfile)
-	var interp Interpreter = vm0.New(golang.GoParser)
-	if len(os.Args) > 1 && os.Args[1] == "1" {
-		interp = codegen.NewInterpreter(golang.GoParser)
-		interp.(*codegen.Interpreter).AddSym(fmt.Println, "println")
-	}
-	in := os.Stdin
-
-	if isatty(in) {
-		// Provide an interactive line oriented Read Eval Print Loop (REPL).
-		liner := bufio.NewScanner(in)
-		text, prompt := "", "> "
-		fmt.Print(prompt)
-		for liner.Scan() {
-			text += liner.Text()
-			res, err := interp.Eval(text + "\n")
-			if err == nil {
-				if res != nil {
-					fmt.Println(": ", res)
-				}
-				text, prompt = "", "> "
-			} else if errors.Is(err, scanner.ErrBlock) {
-				prompt = ">> "
-			} else {
-				fmt.Println("Error:", err)
-				text, prompt = "", "> "
-			}
-			fmt.Print(prompt)
-		}
-		return
-	}
-
-	buf, err := io.ReadAll(in)
-	if err != nil {
-		log.Fatal(err)
-	}
-	if _, err := interp.Eval(string(buf)); err != nil {
-		log.Fatal(err)
-	}
-}
-
-// isatty returns true if the input stream is a tty (i.e. a character device).
-func isatty(in io.Reader) bool {
-	s, ok := in.(interface{ Stat() (os.FileInfo, error) })
-	if !ok {
-		return false
-	}
-	stat, err := s.Stat()
-	return err == nil && stat.Mode()&os.ModeCharDevice != 0
-}