Beispiel #1
0
func prep(expr *ast.Expr, expType types.Type) (uniq string, err error) {
	if expr.Function != nil {
		fnc := expr.GetFunction()
		uniq, err = WhichFunc(fnc)
		if err != nil {
			return "", err
		}
		typ, err := funcs.Out(uniq)
		if err != nil {
			return "", err
		}
		if typ != expType {
			return "", &errExpected{expType.String(), expr.String()}
		}
		return uniq, err
	}
	if expr.List != nil {
		if !types.IsList(expType) {
			return "", &errExpected{expType.String(), expr.String()}
		}
	}
	typ, err := Which(expr)
	if err != nil {
		return "", err
	}
	if typ != expType {
		return "", &errExpected{expType.String(), expr.String()}
	}
	return "", nil
}
Beispiel #2
0
func newValue(p *ast.Expr) (interface{}, error) {
	if p.Terminal != nil && p.GetTerminal().Variable != nil {
		return composeVariable(p.GetTerminal().Variable), nil
	}
	typ, err := Which(p)
	if err != nil {
		return nil, err
	}
	switch typ {
	case types.SINGLE_DOUBLE:
		return composeFloat64(p)
	case types.SINGLE_FLOAT:
		return composeFloat32(p)
	case types.SINGLE_INT64:
		return composeInt64(p)
	case types.SINGLE_UINT64:
		return composeUint64(p)
	case types.SINGLE_INT32:
		return composeInt32(p)
	case types.SINGLE_BOOL:
		return composeBool(p)
	case types.SINGLE_STRING:
		return composeString(p)
	case types.SINGLE_BYTES:
		return composeBytes(p)
	case types.SINGLE_UINT32:
		return composeUint32(p)
	case types.LIST_DOUBLE:
		return composeFloat64s(p)
	case types.LIST_FLOAT:
		return composeFloat32s(p)
	case types.LIST_INT64:
		return composeInt64s(p)
	case types.LIST_UINT64:
		return composeUint64s(p)
	case types.LIST_INT32:
		return composeInt32s(p)
	case types.LIST_BOOL:
		return composeBools(p)
	case types.LIST_STRING:
		return composeStrings(p)
	case types.LIST_BYTES:
		return composeListOfBytes(p)
	case types.LIST_UINT32:
		return composeUint32s(p)
	}
	panic("not implemented")
}
Beispiel #3
0
func composeFloat32s(expr *ast.Expr) (funcs.Float32s, error) {
	uniq, err := prep(expr, types.LIST_FLOAT)
	if err != nil {
		return nil, err
	}
	if expr.List != nil {
		vs, err := newValues(expr.GetList().GetElems())
		if err != nil {
			return nil, err
		}
		bs := make([]funcs.Float32, len(vs))
		var ok bool
		for i := range vs {
			bs[i], ok = vs[i].(funcs.Float32)
			if !ok {
				return nil, &errExpected{types.SINGLE_FLOAT.String(), expr.String()}
			}
		}
		return funcs.NewListOfFloat32(bs), nil
	}
	values, err := newValues(expr.GetFunction().GetParams())
	if err != nil {
		return nil, err
	}
	return funcs.NewFloat32sFunc(uniq, values...)
}
Beispiel #4
0
func Which(expr *ast.Expr) (types.Type, error) {
	if expr.Terminal != nil {
		term := expr.GetTerminal()
		if term.DoubleValue != nil {
			return types.SINGLE_DOUBLE, nil
		}
		if term.FloatValue != nil {
			return types.SINGLE_FLOAT, nil
		}
		if term.Int64Value != nil {
			return types.SINGLE_INT64, nil
		}
		if term.Uint64Value != nil {
			return types.SINGLE_UINT64, nil
		}
		if term.Int32Value != nil {
			return types.SINGLE_INT32, nil
		}
		if term.BoolValue != nil {
			return types.SINGLE_BOOL, nil
		}
		if term.StringValue != nil {
			return types.SINGLE_STRING, nil
		}
		if term.BytesValue != nil {
			return types.SINGLE_BYTES, nil
		}
		if term.Uint32Value != nil {
			return types.SINGLE_UINT32, nil
		}
		if term.Variable != nil {
			return term.Variable.Type, nil
		}
	}
	if expr.List != nil {
		return expr.GetList().GetType(), nil
	}
	if expr.Function != nil {
		fnc := expr.GetFunction()
		uniq, err := WhichFunc(fnc)
		if err != nil {
			return 0, err
		}
		return funcs.Out(uniq)
	}
	return 0, &errUnknownType{expr}
}
Beispiel #5
0
func composeFloat32(expr *ast.Expr) (funcs.Float32, error) {
	uniq, err := prep(expr, types.SINGLE_FLOAT)
	if err != nil {
		return nil, err
	}
	if expr.Terminal != nil {
		if expr.GetTerminal().Variable != nil {
			return funcs.NewFloat32Variable(), nil
		} else {
			return funcs.NewConstFloat32(expr.GetTerminal().GetFloatValue()), nil
		}
	}
	values, err := newValues(expr.GetFunction().GetParams())
	if err != nil {
		return nil, err
	}
	return funcs.NewFloat32Func(uniq, values...)
}
Beispiel #6
0
func composeBytes(expr *ast.Expr) (funcs.Bytes, error) {
	uniq, err := prep(expr, types.SINGLE_BYTES)
	if err != nil {
		return nil, err
	}
	if expr.Terminal != nil {
		if expr.GetTerminal().Variable != nil {
			return funcs.NewBytesVariable(), nil
		} else {
			return funcs.NewConstBytes(expr.GetTerminal().GetBytesValue()), nil
		}
	}
	values, err := newValues(expr.GetFunction().GetParams())
	if err != nil {
		return nil, err
	}
	return funcs.NewBytesFunc(uniq, values...)
}
Beispiel #7
0
func composeString(expr *ast.Expr) (funcs.String, error) {
	uniq, err := prep(expr, types.SINGLE_STRING)
	if err != nil {
		return nil, err
	}
	if expr.Terminal != nil {
		if expr.GetTerminal().Variable != nil {
			return funcs.NewStringVariable(), nil
		} else {
			return funcs.NewConstString(expr.GetTerminal().GetStringValue()), nil
		}
	}
	values, err := newValues(expr.GetFunction().GetParams())
	if err != nil {
		return nil, err
	}
	return funcs.NewStringFunc(uniq, values...)
}
Beispiel #8
0
func composeUint64(expr *ast.Expr) (funcs.Uint64, error) {
	uniq, err := prep(expr, types.SINGLE_UINT64)
	if err != nil {
		return nil, err
	}
	if expr.Terminal != nil {
		if expr.GetTerminal().Variable != nil {
			return funcs.NewUint64Variable(), nil
		} else {
			return funcs.NewConstUint64(expr.GetTerminal().GetUint64Value()), nil
		}
	}
	values, err := newValues(expr.GetFunction().GetParams())
	if err != nil {
		return nil, err
	}
	return funcs.NewUint64Func(uniq, values...)
}