muesli/builtin.go

package muesli

import "fmt"


func printf(vm *VM, args ...Value) ListValue {
	var form string
	var rest = args[1:len(args)]
	resri := ListFromList(rest)
	err := From(args[0], &form)
	if err != nil {
		fmt.Printf("Error: %s\n", err.Error())
	} else {
		fmt.Printf(form, resri...)
	}
	return NewListValue()
}

func println(vm *VM, args ...Value) ListValue {
	var msg string
	// resri := ListFromList(rest)
	err := From(args[0], &msg)
	if err != nil {
		fmt.Printf("Error: %s\n", err.Error())
	}
	fmt.Println(msg)
	return NewListValue()
}

func p(vm *VM, args ...Value) ListValue {
	argi := ListFromList(args)
	fmt.Println(argi...)
	for _, arg := range args {
		fmt.Printf("%v\n", arg)
	}	
	return NewListValue()
}


func (vm *VM) RegisterBuiltins() {
	vm.RegisterBuiltin("p", p)
	vm.RegisterBuiltin("prinln", println)
	vm.RegisterBuiltin("printf", printf)
}