refactor php7

pkg/errors/error.go

@@ -0,0 +1,30 @@
+package errors
+
+import (
+	"fmt"
+
+	"github.com/z7zmey/php-parser/pkg/position"
+)
+
+// Error parsing error
+type Error struct {
+	Msg string
+	Pos *position.Position
+}
+
+// NewError creates and returns new Error
+func NewError(msg string, p *position.Position) *Error {
+	return &Error{
+		Msg: msg,
+		Pos: p,
+	}
+}
+
+func (e *Error) String() string {
+	atLine := ""
+	if e.Pos != nil {
+		atLine = fmt.Sprintf(" at line %d", e.Pos.StartLine)
+	}
+
+	return fmt.Sprintf("%s%s", e.Msg, atLine)
+}

pkg/errors/error_test.go

@@ -0,0 +1,45 @@
+package errors_test
+
+import (
+	"testing"
+
+	"gotest.tools/assert"
+
+	"github.com/z7zmey/php-parser/errors"
+	"github.com/z7zmey/php-parser/position"
+)
+
+func TestConstructor(t *testing.T) {
+	pos := position.NewPosition(1, 2, 3, 4)
+
+	actual := errors.NewError("message", pos)
+
+	expected := &errors.Error{
+		Msg: "message",
+		Pos: pos,
+	}
+
+	assert.DeepEqual(t, expected, actual)
+}
+
+func TestPrint(t *testing.T) {
+	pos := position.NewPosition(1, 2, 3, 4)
+
+	Error := errors.NewError("message", pos)
+
+	actual := Error.String()
+
+	expected := "message at line 1"
+
+	assert.DeepEqual(t, expected, actual)
+}
+
+func TestPrintWithotPos(t *testing.T) {
+	Error := errors.NewError("message", nil)
+
+	actual := Error.String()
+
+	expected := "message"
+
+	assert.DeepEqual(t, expected, actual)
+}