/
conv.go
64 lines (57 loc) · 1.43 KB
/
conv.go
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package gmp
import (
"errors"
"math/big"
"github.com/MagicalTux/goro/core/phpobj"
"github.com/MagicalTux/goro/core/phpv"
)
func readInt(ctx phpv.Context, v *phpv.ZVal) (*big.Int, error) {
var i *big.Int
var err error
switch v.GetType() {
case phpv.ZtNull, phpv.ZtBool, phpv.ZtInt, phpv.ZtFloat:
v, err = v.As(ctx, phpv.ZtInt)
if err != nil {
return nil, err
}
i = big.NewInt(int64(v.Value().(phpv.ZInt)))
return i, nil
case phpv.ZtObject:
obj, ok := v.Value().(*phpobj.ZObject)
if ok && obj.Class == GMP { // TODO check via instanceof (to be created)
// this is a gmp object
i = obj.GetOpaque(GMP).(*big.Int)
return i, nil
}
fallthrough
default:
v, err = v.As(ctx, phpv.ZtString)
if err != nil {
return nil, err
}
i = &big.Int{}
_, ok := i.SetString(string(v.AsString(ctx)), 0)
if !ok {
return nil, errors.New("Unable to convert variable to GMP - string is not an integer")
}
return i, nil
}
}
func writeInt(ctx phpv.Context, v *phpv.ZVal, i *big.Int) error {
switch v.GetType() {
case phpv.ZtObject:
obj, ok := v.Value().(*phpobj.ZObject)
if ok && obj.Class == GMP { // TODO check via instanceof (to be created)
obj.SetOpaque(GMP, i)
return nil
}
}
return errors.New("expected parameter to be GMP")
}
func returnInt(ctx phpv.Context, i *big.Int) (*phpv.ZVal, error) {
z, err := phpobj.NewZObjectOpaque(ctx, GMP, i)
if err != nil {
return nil, err
}
return z.ZVal(), nil
}