func invokeInteractiveShell(options *Options) {
mainInterpreter := scheme.NewInterpreter("")
for {
indentLevel := 0
expression := ""
for {
currentLine, err := linenoise.Line(shellPrompt(indentLevel))
if err != nil {
log.Fatal(err)
return
}
if currentLine == "exit" {
return
}
linenoise.AddHistory(currentLine)
expression += " "
expression += currentLine
interpreter := scheme.NewInterpreter(expression)
indentLevel = interpreter.IndentLevel()
if indentLevel == 0 {
mainInterpreter.ReloadSourceCode(expression)
mainInterpreter.PrintResults(options.DumpAST)
break
} else if indentLevel < 0 {
fmt.Println("*** ERROR: extra close parentheses")
expression = ""
indentLevel = 0
}
}
}
}
func executeExpression(expression string, dumpAST bool) {
interpreter := scheme.NewInterpreter(expression)
interpreter.PrintErrors(dumpAST)
}