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builtins_goroutines.go
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builtins_goroutines.go
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//go:build !b_tiny
// +build !b_tiny
package evaldo
// import "C"
import (
"fmt"
"reflect"
"sync"
"time"
"github.com/refaktor/rye/env"
"github.com/jinzhu/copier"
)
func strimpg() { fmt.Println("") }
var Builtins_goroutines = map[string]*env.Builtin{
"sleep": {
Argsn: 1,
Doc: "Accepts an integer and Sleeps for given number of miliseconds.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch arg := arg0.(type) {
case env.Integer:
time.Sleep(time.Duration(int(arg.Value)) * time.Millisecond)
return arg
default:
return MakeArgError(ps, 1, []env.Type{env.IntegerType}, "sleep")
}
},
},
"go-with": {
Argsn: 2,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch arg := arg0.(type) {
case env.Object:
switch handler := arg1.(type) {
case env.Function:
errC := make(chan error)
go func() {
ps.FailureFlag = false
ps.ErrorFlag = false
ps.ReturnFlag = false
psTemp := env.ProgramState{}
err := copier.Copy(&psTemp, &ps)
if err != nil {
ps.FailureFlag = true
ps.ErrorFlag = true
ps.ReturnFlag = true
errC <- fmt.Errorf("failed to copy ps: %w", err)
}
close(errC)
CallFunction(handler, &psTemp, arg, false, nil)
}()
if err := <-errC; err != nil {
return MakeBuiltinError(ps, err.Error(), "go-with")
}
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 2, []env.Type{env.FunctionType}, "go-with")
}
default:
ps.FailureFlag = true
return MakeBuiltinError(ps, "First argument should be object type.", "go-with")
}
},
},
"go": {
Argsn: 1,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch handler := arg0.(type) {
case env.Function:
errC := make(chan error)
go func() {
ps.FailureFlag = false
ps.ErrorFlag = false
ps.ReturnFlag = false
psTemp := env.ProgramState{}
err := copier.Copy(&psTemp, &ps)
if err != nil {
ps.FailureFlag = true
ps.ErrorFlag = true
ps.ReturnFlag = true
errC <- fmt.Errorf("failed to copy ps: %w", err)
}
close(errC)
CallFunction(handler, &psTemp, nil, false, nil)
// CallFunctionArgs2(handler, &psTemp, arg, *env.NewNative(psTemp.Idx, "asd", "Go-server-context"), nil)
}()
if err := <-errC; err != nil {
return MakeBuiltinError(ps, err.Error(), "go")
}
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.FunctionType}, "go")
}
},
},
"channel": {
Argsn: 1,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch buflen := arg0.(type) {
case env.Integer:
//fmt.Println(str.Value)
ch := make(chan *env.Object, int(buflen.Value))
return *env.NewNative(ps.Idx, ch, "Rye-channel")
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.IntegerType}, "new-channel")
}
},
},
"Rye-channel//read": {
Argsn: 1,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch chn := arg0.(type) {
case env.Native:
msg, ok := <-chn.Value.(chan *env.Object)
if ok {
return *msg
} else {
return *env.NewError("channel closed")
}
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.NativeType}, "Rye-channel//read")
}
},
},
"Rye-channel//send": {
Argsn: 2,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch chn := arg0.(type) {
case env.Native:
chn.Value.(chan *env.Object) <- &arg1
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.NativeType}, "Rye-channel//send")
}
},
},
"Rye-channel//close": {
Argsn: 1,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch chn := arg0.(type) {
case env.Native:
close(chn.Value.(chan *env.Object))
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.NativeType}, "Rye-channel//close")
}
},
},
"waitgroup": {
Argsn: 0,
Doc: "Create a waitgroup.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
var wg sync.WaitGroup
return *env.NewNative(ps.Idx, &wg, "Rye-waitgroup")
},
},
"Rye-waitgroup//add": {
Argsn: 2,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch wg := arg0.(type) {
case env.Native:
switch count := arg1.(type) {
case env.Integer:
wg.Value.(*sync.WaitGroup).Add(int(count.Value))
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 2, []env.Type{env.IntegerType}, "Rye-waitgroup//add")
}
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.NativeType}, "Rye-waitgroup//add")
}
},
},
"Rye-waitgroup//done": {
Argsn: 1,
Doc: "TODODOC.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch wg := arg0.(type) {
case env.Native:
wg.Value.(*sync.WaitGroup).Done()
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.NativeType}, "Rye-waitgroup//done")
}
},
},
"Rye-waitgroup//wait": {
Argsn: 1,
Doc: "Wait on a waitgroup.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch wg := arg0.(type) {
case env.Native:
wg.Value.(*sync.WaitGroup).Wait()
return arg0
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.NativeType}, "Rye-waitgroup//wait")
}
},
},
"select\\fn": {
Argsn: 1,
Doc: "Select on a message on multiple channels or default.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch block := arg0.(type) {
case env.Block:
ser := ps.Ser
ps.Ser = block.Series
var hasDeafult bool
var cases []reflect.SelectCase
var funcs []env.Function
for ps.Ser.Pos() < ps.Ser.Len() {
EvalExpression2(ps, false)
defaultFn, ok := ps.Res.(env.Function)
// handle default case
if ok {
if hasDeafult {
ps.FailureFlag = true
return MakeBuiltinError(ps, "select can only have one default case", "select")
}
if defaultFn.Argsn != 0 {
ps.FailureFlag = true
return MakeBuiltinError(ps, "function with 0 args required", "select")
}
defaultCase := make(chan struct{})
close(defaultCase) // close it immediately so it's always ready to receive
cases = append(cases, reflect.SelectCase{
Dir: reflect.SelectRecv,
Chan: reflect.ValueOf(defaultCase),
})
funcs = append(funcs, defaultFn)
hasDeafult = true
continue
}
// handle regular channel case
native, ok := ps.Res.(env.Native)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "first argument of a case must be a channel", "select")
}
ch, ok := native.Value.(chan *env.Object)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "first argument of a case must be a channel", "select")
}
cases = append(cases, reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(ch)})
EvalExpression2(ps, false)
fn, ok := ps.Res.(env.Function)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "second argument of a case must be a function", "select")
}
if fn.Argsn > 1 {
ps.FailureFlag = true
return MakeBuiltinError(ps, "function with 0 or 1 arg required", "select")
}
funcs = append(funcs, fn)
}
ps.Ser = ser
chosen, value, recvOK := reflect.Select(cases)
fn := funcs[chosen]
psTemp := env.ProgramState{}
err := copier.Copy(&psTemp, &ps)
if err != nil {
ps.FailureFlag = true
return MakeBuiltinError(ps, fmt.Sprintf("failed to copy ps: %s", err), "select")
}
var arg env.Object = nil
if recvOK {
val, ok := value.Interface().(*env.Object)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "value from channel is not an object", "select")
}
arg = *val
}
if fn.Argsn == 0 {
arg = nil
}
CallFunction(fn, &psTemp, arg, false, nil)
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.BlockType}, "select")
}
return arg0
},
},
// Modified select\fn code to accept blocks, at the end there will only be one select probably, accepting blocks, functions and get-words
// Further modified so that default case is prepedned by void _ , like we do in switch function for example
// Rok did one thing differently than we did so faw. He evaluated the second value in pair, block or fn ...
// So faw we haven't done this. We didn't evaluate/retrieve except a value was a get-word ... I have to think what is
// better in the long run. In normal use you don't see the difference, but in more edge cases the difference is big and it
// must be done consistent across similar functions
"select": {
Argsn: 1,
Doc: "Select on a message on multiple channels or default.",
Fn: func(ps *env.ProgramState, arg0 env.Object, arg1 env.Object, arg2 env.Object, arg3 env.Object, arg4 env.Object) env.Object {
switch block := arg0.(type) {
case env.Block:
ser := ps.Ser
ps.Ser = block.Series
var hasDeafult bool
var cases []reflect.SelectCase
var funcs []env.Block
for ps.Ser.Pos() < ps.Ser.Len() {
EvalExpression2(ps, false)
// handle default case
switch maybeChan := ps.Res.(type) {
case env.Native:
ch, ok := maybeChan.Value.(chan *env.Object)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "first argument of a case must be a channel", "select")
}
cases = append(cases, reflect.SelectCase{Dir: reflect.SelectRecv, Chan: reflect.ValueOf(ch)})
EvalExpression2(ps, false)
fn, ok := ps.Res.(env.Block)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "second argument of a case must be a block", "select")
}
/* if fn.Argsn > 1 {
ps.FailureFlag = true
return MakeBuiltinError(ps, "function with 0 or 1 arg required", "select")
}*/
funcs = append(funcs, fn)
case env.Void:
if hasDeafult {
ps.FailureFlag = true
return MakeBuiltinError(ps, "select can only have one default case", "select")
}
/* if defaultFn.Argsn != 0 {
ps.FailureFlag = true
return MakeBuiltinError(ps, "function with 0 args required", "select")
} */
defaultCase := make(chan struct{})
close(defaultCase) // close it immediately so it's always ready to receive
cases = append(cases, reflect.SelectCase{
Dir: reflect.SelectRecv,
Chan: reflect.ValueOf(defaultCase),
})
EvalExpression2(ps, false)
fn, ok := ps.Res.(env.Block)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "second argument of a case must be a block", "select")
}
funcs = append(funcs, fn)
hasDeafult = true
}
}
ps.Ser = ser
chosen, value, recvOK := reflect.Select(cases)
fn := funcs[chosen]
psTemp := env.ProgramState{}
err := copier.Copy(&psTemp, &ps)
if err != nil {
ps.FailureFlag = true
return MakeBuiltinError(ps, fmt.Sprintf("failed to copy ps: %s", err), "select")
}
var arg env.Object = nil
if recvOK {
val, ok := value.Interface().(*env.Object)
if !ok {
ps.FailureFlag = true
return MakeBuiltinError(ps, "value from channel is not an object", "select")
}
arg = *val
}
/* if fn.Argsn == 0 {
arg = nil
}*/
psTemp.Ser = fn.Series
EvalBlockInj(&psTemp, arg, true)
// CallFunction(fn, &psTemp, arg, false, nil)
default:
ps.FailureFlag = true
return MakeArgError(ps, 1, []env.Type{env.BlockType}, "select")
}
return arg0
},
},
}