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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"./_obj/eval";
"bufio";
"flag";
"go/parser";
"go/scanner";
"io";
"os";
)
var filename = flag.String("f", "", "file to run")
func main() {
flag.Parse();
w := eval.NewWorld();
if *filename != "" {
data, err := ioutil.ReadFile(*filename);
if err != nil {
println(err.String());
os.Exit(1);
}
file, err := parser.ParseFile(*filename, data, 0);
if err != nil {
println(err.String());
os.Exit(1);
}
code, err := w.CompileDeclList(file.Decls);
if err != nil {
if list, ok := err.(scanner.ErrorList); ok {
for _, e := range list {
println(e.String())
}
} else {
println(err.String())
}
os.Exit(1);
}
_, err := code.Run();
if err != nil {
println(err.String());
os.Exit(1);
}
code, err = w.Compile("init()");
if code != nil {
_, err := code.Run();
if err != nil {
println(err.String());
os.Exit(1);
}
}
code, err = w.Compile("main()");
if err != nil {
println(err.String());
os.Exit(1);
}
_, err = code.Run();
if err != nil {
println(err.String());
os.Exit(1);
}
os.Exit(0);
}
r := bufio.NewReader(os.Stdin);
for {
print("; ");
line, err := r.ReadString('\n');
if err != nil {
break
}
code, err := w.Compile(line);
if err != nil {
println(err.String());
continue;
}
v, err := code.Run();
if err != nil {
println(err.String());
continue;
}
if v != nil {
println(v.String())
}
}
}
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