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49 lines
995 B
49 lines
995 B
package main
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import (
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"strconv"
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"os"
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"strings"
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)
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func prelude() {
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dictionary[":"] = operation{op: newop, readuntil: ";"}
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dictionary["base"] = operation{op: base}
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dictionary["+"] = operation{op: add}
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dictionary["quit"] = operation{op: quit}
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dictionary["."] = operation{op: forth("10 base")}
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}
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func newop(st *[]int, stp *int, code []string) string {
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if len(code) > 0 {
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dictionary[code[0]] = operation{op: forth(strings.Join(code[1:], " "))}
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}
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return ""
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}
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func base(st *[]int, stp *int, _ []string) string {
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base, _ := getvalue(st, stp)
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r, err := getvalue(st, stp)
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if err != nil {
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return err.Error()
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}
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return strconv.FormatInt(int64(r), base)
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}
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func add(st *[]int, stp *int, _ []string) string {
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n1, _ := getvalue(st, stp)
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n2, err := getvalue(st, stp)
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if err != nil {
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return err.Error()
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}
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err = putvalue(st, stp, n1+n2)
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if err != nil {
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return err.Error()
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}
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return "*"
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}
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func quit(_ *[]int, _ *int, _ []string) string {
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os.Exit(0)
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return "should have quit"
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}
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