diff options
Diffstat (limited to 'codegen/interpreter.go')
| -rw-r--r-- | codegen/interpreter.go | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/codegen/interpreter.go b/codegen/interpreter.go deleted file mode 100644 index 18cc5f8..0000000 --- a/codegen/interpreter.go +++ /dev/null @@ -1,53 +0,0 @@ -package codegen - -import ( - "os" - - "github.com/gnolang/parscan/parser" - "github.com/gnolang/parscan/vm1" -) - -const debug = true - -type Interpreter struct { - *parser.Parser - *Compiler - *vm1.Machine -} - -func NewInterpreter(p *parser.Parser) *Interpreter { - return &Interpreter{p, NewCompiler(), &vm1.Machine{}} -} - -func (i *Interpreter) Eval(src string) (res any, err error) { - n := &parser.Node{} - if n.Child, err = i.Parse(src, n); err != nil { - return res, err - } - if debug { - n.Dot(os.Getenv("DOT"), "") - } - codeOffset := len(i.Code) - dataOffset := 0 - if codeOffset > 0 { - // All data must be copied to the VM the first time only (re-entrance). - dataOffset = len(i.Data) - } - i.PopExit() // Remove last exit from previous run (re-entrance). - if err = i.CodeGen(n); err != nil { - return res, err - } - i.Push(i.Data[dataOffset:]...) - i.PushCode(i.Code[codeOffset:]...) - i.PushCode([]int64{0, vm1.Exit}) - i.SetIP(max(codeOffset, i.Entry)) - err = i.Run() - return i.Top(), err -} - -func max(a, b int) int { - if a > b { - return a - } - return b -} |
