func (i *Interpreter) randomInstruction() Code {
var instr string
n := i.Rand.Intn(len(i.listOfInstructions) + len(i.listOfDefinitions))
if n < len(i.listOfInstructions) {
instr = i.listOfInstructions[n]
} else {
instr = i.listOfDefinitions[n-len(i.listOfInstructions)]
}
switch instr {
case "INTEGER-ERC":
// Generate ephemeral random constant integer
high := i.Options.MaxRandomInteger
low := i.Options.MinRandomInteger
instr = fmt.Sprint(i.Rand.Int63n(high+1-low) + low)
case "FLOAT-ERC":
// Generate ephemeral random constant float
high := i.Options.MaxRandomFloat
low := i.Options.MinRandomFloat
instr = fmt.Sprint(i.Rand.Float64()*(high-low) + low)
if !strings.Contains(instr, ".") {
instr += ".0"
}
case "NAME-ERC":
// Generate ephemeral random constant NAME
if i.Rand.Float64() < i.Options.NewERCNameProbabilty || i.numNamesGenerated == 0 {
// Generate a new random NAME
instr = goremutake.Encode(i.numNamesGenerated)
i.numNamesGenerated++
} else {
// Use a random, already generated NAME
instr = goremutake.Encode(uint(i.Rand.Intn(int(i.numNamesGenerated))))
}
}
return Code{Length: 1, Literal: instr}
}
// SaveTask saves a task (or tasks) to the store and returns the first error
// encountered. It does not commit to disk, use `Commit` to do that.
func (j *JSONStore) SaveTask(ts ...*Task) error {
j.taskLock.Lock()
defer j.taskLock.Unlock()
for _, t := range ts {
// assign the Task an ID if it doesn't have one already
if t.ID == "" {
t.ID = goremutake.Encode(j.NextID())
}
j.Tasks[t.ID] = t
}
return nil
}
// newNameStack returns a new NAME stack
func newNameStack(interpreter *Interpreter) *Stack {
s := &Stack{
Functions: make(map[string]func()),
}
s.Functions["="] = func() {
if !interpreter.StackOK("name", 2) || !interpreter.StackOK("boolean", 0) {
return
}
n1 := interpreter.Stacks["name"].Pop().(string)
n2 := interpreter.Stacks["name"].Pop().(string)
interpreter.Stacks["boolean"].Push(n1 == n2)
}
s.Functions["dup"] = func() {
interpreter.Stacks["name"].Dup()
}
s.Functions["flush"] = func() {
interpreter.Stacks["name"].Flush()
}
s.Functions["pop"] = func() {
interpreter.Stacks["name"].Pop()
}
s.Functions["quote"] = func() {
interpreter.quoteNextName = true
}
s.Functions["rand"] = func() {
randName := goremutake.Encode(interpreter.numNamesGenerated)
interpreter.Stacks["name"].Push(randName)
interpreter.numNamesGenerated++
}
s.Functions["randboundname"] = func() {
l := len(interpreter.listOfDefinitions)
if l == 0 {
return
}
idx := interpreter.Rand.Intn(l)
randName := interpreter.listOfDefinitions[idx]
interpreter.Stacks["name"].Push(randName)
}
s.Functions["rot"] = func() {
interpreter.Stacks["name"].Rot()
}
s.Functions["shove"] = func() {
if !interpreter.StackOK("name", 1) || !interpreter.StackOK("integer", 1) {
return
}
idx := interpreter.Stacks["integer"].Pop().(int64)
name := interpreter.Stacks["name"].Peek().(string)
interpreter.Stacks["name"].Shove(name, idx)
interpreter.Stacks["name"].Pop()
}
s.Functions["stackdepth"] = func() {
if !interpreter.StackOK("integer", 0) {
return
}
interpreter.Stacks["integer"].Push(interpreter.Stacks["name"].Len())
}
s.Functions["swap"] = func() {
interpreter.Stacks["name"].Swap()
}
s.Functions["yank"] = func() {
if !interpreter.StackOK("integer", 1) || !interpreter.StackOK("name", 1) {
return
}
idx := interpreter.Stacks["integer"].Pop().(int64)
interpreter.Stacks["name"].Yank(idx)
}
s.Functions["yankdup"] = func() {
if !interpreter.StackOK("integer", 1) || !interpreter.StackOK("name", 1) {
return
}
idx := interpreter.Stacks["integer"].Pop().(int64)
interpreter.Stacks["name"].YankDup(idx)
}
return s
}