/
builtins_stackless.go
executable file
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/
builtins_stackless.go
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// builtins.go
package evaldo
import (
"fmt"
"github.com/refaktor/rye/env"
)
// definiraj frame <builtin nargs arg0 arg1>
// definiraj stack []evalframe
// callbui kreira trenuten frame, nastavi bui nargs in vrne
// while loop pogleda naslednji arg, če je literal nastavi arg in poveča argc če je argc nargs potem pokliče frame in iz stacka potegne naslednjega, če ni potem zalopa
// če je builtin potem pusha trenuten frame na stack in kreira novega
func Stck_CallBuiltin(bi env.Builtin, ps *env.ProgramState, arg0_ env.Object, toLeft bool) *env.ProgramState {
evalExprFn := EvalExpression2
arg0 := bi.Cur0 //env.Object(bi.Cur0)
arg1 := bi.Cur1
if bi.Argsn > 0 && bi.Cur0 == nil {
//fmt.Println(" ARG 1 ")
//fmt.Println(ps.Ser.GetPos())
evalExprFn(ps, true)
if checkFlagsBi(bi, ps, 0) {
return ps
}
if ps.ErrorFlag || ps.ReturnFlag {
return ps
}
arg0 = ps.Res
}
if bi.Argsn > 1 && bi.Cur1 == nil {
evalExprFn(ps, true) // <---- THESE DETERMINE IF IT CONSUMES WHOLE EXPRESSION OR NOT IN CASE OF PIPEWORDS .. HM*... MAYBE WOULD COULD HAVE A WORD MODIFIER?? a: 2 |add 5 a:: 2 |add 5 print* --TODO
if checkFlagsBi(bi, ps, 1) {
return ps
}
if ps.ErrorFlag || ps.ReturnFlag {
return ps
}
//fmt.Println(ps.Res)
arg1 = ps.Res
}
ps.Res = bi.Fn(ps, arg0, arg1, nil, nil, nil)
return ps
}
func Stck_EvalObject(ps *env.ProgramState, object env.Object, leftVal env.Object, toLeft bool, ctx *env.RyeCtx) *env.ProgramState {
//fmt.Print("EVAL OBJECT")
switch object.Type() {
case env.BuiltinType:
//fmt.Println(" BUIL**")
//fmt.Println(ps.Ser.GetPos())
//fmt.Println(" BUILTIN**")
bu := object.(env.Builtin)
// OBJECT INJECTION EXPERIMENT
// ps.Ser.Put(bu)
if checkFlagsBi(bu, ps, 333) {
return ps
}
return Stck_CallBuiltin(bu, ps, leftVal, toLeft)
//ps.Res.Trace("After builtin call")
//return ps
default:
//d object.Trace("DEFAULT**")
ps.Res = object
//ps.Res.Trace("After object returned")
return ps
}
}
func Stck_EvalWord(ps *env.ProgramState, word env.Object, leftVal env.Object, toLeft bool) *env.ProgramState {
// LOCAL FIRST
found, object, ctx := findWordValue(ps, word)
if found {
trace("****33")
return Stck_EvalObject(ps, object, leftVal, toLeft, ctx) //ww0128a *
//ps.Res.Trace("After eval Object")
//return ps
} else {
trace("****34")
ps.ErrorFlag = true
if !ps.FailureFlag {
ps.Res = *env.NewError2(5, "Word not found: "+word.Inspect(*ps.Idx))
fmt.Println("Error: Not known type")
}
return ps
}
}
func Stck_EvalExpression(ps *env.ProgramState) *env.ProgramState {
object := ps.Ser.Pop()
trace2("Before entering expression")
if object != nil {
switch object.Type() {
case env.IntegerType:
ps.Res = object
case env.StringType:
ps.Res = object
case env.BlockType:
ps.Res = object
case env.WordType:
rr := Stck_EvalWord(ps, object.(env.Word), nil, false)
return rr
default:
ps.ErrorFlag = true
ps.Res = env.NewError("Not known type")
fmt.Println("Error: Not known type")
}
} else {
ps.ErrorFlag = true
ps.Res = env.NewError("Not known type")
fmt.Println("Error: Not known type")
}
return ps
}
func Stck_EvalBlock(ps *env.ProgramState) *env.ProgramState {
for ps.Ser.Pos() < ps.Ser.Len() {
ps = Stck_EvalExpression(ps)
if checkFlagsAfterBlock(ps, 101) {
return ps
}
if ps.ReturnFlag || ps.ErrorFlag {
return ps
}
}
return ps
}
var Builtins_stackless = map[string]*env.Builtin{
"ry0": {
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 bloc := arg0.(type) {
case env.Block:
ser := ps.Ser
ps.Ser = bloc.Series
Stck_EvalBlock(ps)
ps.Ser = ser
return ps.Res
default:
return MakeArgError(ps, 1, []env.Type{env.BlockType}, "ry0")
}
},
},
"ry0-loop": {
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 cond := arg0.(type) {
case env.Integer:
switch bloc := arg1.(type) {
case env.Block:
ser := ps.Ser
ps.Ser = bloc.Series
for i := 0; int64(i) < cond.Value; i++ {
ps = Stck_EvalBlock(ps)
ps.Ser.Reset()
}
ps.Ser = ser
return ps.Res
default:
return MakeArgError(ps, 1, []env.Type{env.BlockType}, "ry0-loop")
}
default:
return MakeArgError(ps, 1, []env.Type{env.IntegerType}, "ry0-loop")
}
},
},
}