92 lines
2.4 KiB
Go
92 lines
2.4 KiB
Go
package builtins
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import (
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"git.sr.ht/~cco/go-scopes/forge"
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)
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type FE = forge.FE
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type XT = forge.XT
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type FPtr = forge.FPtr
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type builtins struct {
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Add, Body, Code, Comp, Drop, Dup, Get, If, IfElse, Leave, Lit, Mult,
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New1, Put, Reg, Repeat, Swap,
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Var1 XT
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}
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func Get(f FE) *builtins {
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if v, ok := f.Voc().Lookup("builtins"); ok {
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return v.(*builtins)
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}
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b := setup(f)
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f.Voc().Register("builtins", b)
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return b
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}
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func setup(f FE) *builtins {
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voc := f.Voc()
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r := func(name string, fct forge.Callable) XT {
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return forge.Register(voc, forge.GoFunc(name, fct))
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}
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b := builtins{
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Add: r("+", func(f FE, _ XT) { f.Push(f.PopI() + f.PopI()) }),
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/*Append: r("append", func(f FE, _ XT) {
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item := f.Pop()
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f.Peek(0).(FPtr).Append(item)
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}),*/
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Body: r("body", func(f FE, _ XT) { f.Push(f.Pop().(XT).Code().New().Next()) }),
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Code: r("code", func(f FE, _ XT) { f.Push(f.Code()) }),
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Comp: r("comp", func(f FE, _ XT) { f.LatestXT().Code().Append(f.Pop()) }),
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Drop: r("drop", func(f FE, _ XT) { f.Pop() }),
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Dup: r("dup", func(f FE, _ XT) { f.Push(f.Peek(0)) }),
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Get: r("@", func(f FE, _ XT) { f.Push(f.Pop().(FPtr).Value()) }),
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Leave: r("leave", func(f FE, _ XT) { f.RPop() }),
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Lit: r("lit", func(f FE, _ XT) { f.Push(f.Literal()) }),
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Mult: r("*", func(f FE, _ XT) { f.Push(f.PopI() * f.PopI()) }),
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New1: r("new1", func(f FE, _ XT) { f.Push(f.NewVar()) }),
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Put: r("!", func(f FE, _ XT) { f.Pop().(FPtr).Set(f.Pop()) }),
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Reg: r("reg", func(f FE, _ XT) { reg(f) }),
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Repeat: r("repeat", func(f FE, _ XT) { f.Reset() }),
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Swap: r("swap", func(f FE, _ XT) {
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a := f.Pop()
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b := f.Pop()
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f.Push(a)
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f.Push(b)
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}),
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}
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rf := func(name string, code ...forge.FItem) XT {
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return forge.Register(voc, forge.FCode(name, f.Code(code...)))
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}
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b.Var1 = rf("var1", b.Code, b.Swap, b.Reg, b.New1, b.Comp)
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return &b
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}
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func doif(f FE) {
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ifBranch := f.Literal().(FPtr)
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if f.Pop().(bool) {
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f.Call(ifBranch)
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}
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}
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func doifelse(f FE) {
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ifBranch := f.Literal().(FPtr)
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elseBranch := f.Literal().(FPtr)
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if f.Pop().(bool) {
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f.Call(ifBranch)
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} else {
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f.Call(elseBranch)
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}
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}
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func reg(f FE) {
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f.Register(forge.FCode(f.Pop().(string), f.Pop().(FPtr)))
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}
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func create(f FE, _ XT) {
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name := f.Pop().(string)
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does := forge.AnonCode(f.Pop().(FPtr))
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f.Register(forge.GoFunc(name, func(f FE, _ XT) {
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f.Register(forge.FCode(f.Pop().(string),
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f.Code(f.NewVar(), does)))
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}))
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}
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