diff --git a/parser/position_builder.go b/parser/position_builder.go
index 178b1cb..e09a0ba 100644
--- a/parser/position_builder.go
+++ b/parser/position_builder.go
@@ -6,8 +6,8 @@ import (
 	"github.com/z7zmey/php-parser/scanner"
 )
 
-// Builder provide functions to constuct positions
-type Builder struct {
+// PositionBuilder provide functions to constuct positions
+type PositionBuilder struct {
 	Positions *Positions
 }
 
@@ -21,7 +21,7 @@ type endPos struct {
 	endPos  int
 }
 
-func (b *Builder) getListStartPos(l []node.Node) startPos {
+func (b *PositionBuilder) getListStartPos(l []node.Node) startPos {
 	if l == nil {
 		return startPos{-1, -1}
 	}
@@ -33,7 +33,7 @@ func (b *Builder) getListStartPos(l []node.Node) startPos {
 	return b.getNodeStartPos(l[0])
 }
 
-func (b *Builder) getNodeStartPos(n node.Node) startPos {
+func (b *PositionBuilder) getNodeStartPos(n node.Node) startPos {
 	sl := -1
 	sp := -1
 
@@ -50,7 +50,7 @@ func (b *Builder) getNodeStartPos(n node.Node) startPos {
 	return startPos{sl, sp}
 }
 
-func (b *Builder) getListEndPos(l []node.Node) endPos {
+func (b *PositionBuilder) getListEndPos(l []node.Node) endPos {
 	if l == nil {
 		return endPos{-1, -1}
 	}
@@ -62,7 +62,7 @@ func (b *Builder) getListEndPos(l []node.Node) endPos {
 	return b.getNodeEndPos(l[len(l)-1])
 }
 
-func (b *Builder) getNodeEndPos(n node.Node) endPos {
+func (b *PositionBuilder) getNodeEndPos(n node.Node) endPos {
 	el := -1
 	ep := -1
 
@@ -80,120 +80,120 @@ func (b *Builder) getNodeEndPos(n node.Node) endPos {
 }
 
 // NewNodeListPosition returns new Position
-func (b *Builder) NewNodeListPosition(list []node.Node) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewNodeListPosition(list []node.Node) *position.Position {
+	return position.NewPosition(
 		b.getListStartPos(list).startLine,
 		b.getListEndPos(list).endLine,
 		b.getListStartPos(list).startPos,
 		b.getListEndPos(list).endPos,
-	}
+	)
 }
 
 // NewNodePosition returns new Position
-func (b *Builder) NewNodePosition(n node.Node) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewNodePosition(n node.Node) *position.Position {
+	return position.NewPosition(
 		b.getNodeStartPos(n).startLine,
 		b.getNodeEndPos(n).endLine,
 		b.getNodeStartPos(n).startPos,
 		b.getNodeEndPos(n).endPos,
-	}
+	)
 }
 
 // NewTokenPosition returns new Position
-func (b *Builder) NewTokenPosition(t scanner.Token) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewTokenPosition(t scanner.Token) *position.Position {
+	return position.NewPosition(
 		t.StartLine,
 		t.EndLine,
 		t.StartPos,
 		t.EndPos,
-	}
+	)
 }
 
 // NewTokensPosition returns new Position
-func (b *Builder) NewTokensPosition(startToken scanner.Token, endToken scanner.Token) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewTokensPosition(startToken scanner.Token, endToken scanner.Token) *position.Position {
+	return position.NewPosition(
 		startToken.StartLine,
 		endToken.EndLine,
 		startToken.StartPos,
 		endToken.EndPos,
-	}
+	)
 }
 
 // NewTokenNodePosition returns new Position
-func (b *Builder) NewTokenNodePosition(t scanner.Token, n node.Node) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewTokenNodePosition(t scanner.Token, n node.Node) *position.Position {
+	return position.NewPosition(
 		t.StartLine,
 		b.getNodeEndPos(n).endLine,
 		t.StartPos,
 		b.getNodeEndPos(n).endPos,
-	}
+	)
 }
 
 // NewNodeTokenPosition returns new Position
-func (b *Builder) NewNodeTokenPosition(n node.Node, t scanner.Token) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewNodeTokenPosition(n node.Node, t scanner.Token) *position.Position {
+	return position.NewPosition(
 		b.getNodeStartPos(n).startLine,
 		t.EndLine,
 		b.getNodeStartPos(n).startPos,
 		t.EndPos,
-	}
+	)
 }
 
 // NewNodesPosition returns new Position
-func (b *Builder) NewNodesPosition(startNode node.Node, endNode node.Node) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewNodesPosition(startNode node.Node, endNode node.Node) *position.Position {
+	return position.NewPosition(
 		b.getNodeStartPos(startNode).startLine,
 		b.getNodeEndPos(endNode).endLine,
 		b.getNodeStartPos(startNode).startPos,
 		b.getNodeEndPos(endNode).endPos,
-	}
+	)
 }
 
 // NewNodeListTokenPosition returns new Position
-func (b *Builder) NewNodeListTokenPosition(list []node.Node, t scanner.Token) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewNodeListTokenPosition(list []node.Node, t scanner.Token) *position.Position {
+	return position.NewPosition(
 		b.getListStartPos(list).startLine,
 		t.EndLine,
 		b.getListStartPos(list).startPos,
 		t.EndPos,
-	}
+	)
 }
 
 // NewTokenNodeListPosition returns new Position
-func (b *Builder) NewTokenNodeListPosition(t scanner.Token, list []node.Node) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewTokenNodeListPosition(t scanner.Token, list []node.Node) *position.Position {
+	return position.NewPosition(
 		t.StartLine,
 		b.getListEndPos(list).endLine,
 		t.StartPos,
 		b.getListEndPos(list).endPos,
-	}
+	)
 }
 
 // NewNodeNodeListPosition returns new Position
-func (b *Builder) NewNodeNodeListPosition(n node.Node, list []node.Node) *position.Position {
-	return &position.Position{
+func (b *PositionBuilder) NewNodeNodeListPosition(n node.Node, list []node.Node) *position.Position {
+	return position.NewPosition(
 		b.getNodeStartPos(n).startLine,
 		b.getListEndPos(list).endLine,
 		b.getNodeStartPos(n).startPos,
 		b.getListEndPos(list).endPos,
-	}
+	)
 }
 
 // NewOptionalListTokensPosition returns new Position
-func (b *Builder) NewOptionalListTokensPosition(list []node.Node, t scanner.Token, endToken scanner.Token) *position.Position {
+func (b *PositionBuilder) NewOptionalListTokensPosition(list []node.Node, t scanner.Token, endToken scanner.Token) *position.Position {
 	if list == nil {
-		return &position.Position{
+		return position.NewPosition(
 			t.StartLine,
 			endToken.EndLine,
 			t.StartPos,
 			endToken.EndPos,
-		}
+		)
 	}
 
-	return &position.Position{
+	return position.NewPosition(
 		b.getListStartPos(list).startLine,
 		endToken.EndLine,
 		b.getListStartPos(list).startPos,
 		endToken.EndPos,
-	}
+	)
 }
diff --git a/parser/position_builder_test.go b/parser/position_builder_test.go
index 4d3f5a3..0fda0ad 100644
--- a/parser/position_builder_test.go
+++ b/parser/position_builder_test.go
@@ -11,7 +11,7 @@ import (
 )
 
 func TestNewTokenPosition(t *testing.T) {
-	builder := parser.Builder{}
+	builder := parser.PositionBuilder{}
 
 	tkn := scanner.NewToken([]byte(`foo`), 1, 1, 0, 3)
 
@@ -23,7 +23,7 @@ func TestNewTokenPosition(t *testing.T) {
 }
 
 func TestNewTokensPosition(t *testing.T) {
-	builder := parser.Builder{}
+	builder := parser.PositionBuilder{}
 
 	token1 := scanner.NewToken([]byte(`foo`), 1, 1, 0, 3)
 	token2 := scanner.NewToken([]byte(`foo`), 2, 2, 4, 6)
@@ -46,7 +46,7 @@ func TestNewNodePosition(t *testing.T) {
 		EndPos:    3,
 	})
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: p,
 	}
 
@@ -69,7 +69,7 @@ func TestNewTokenNodePosition(t *testing.T) {
 		EndPos:    12,
 	})
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: p,
 	}
 
@@ -92,7 +92,7 @@ func TestNewNodeTokenPosition(t *testing.T) {
 		EndPos:    9,
 	})
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: p,
 	}
 
@@ -107,7 +107,7 @@ func TestNewNodeListPosition(t *testing.T) {
 	n1 := node.NewIdentifier("test node")
 	n2 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -135,7 +135,7 @@ func TestNewNodesPosition(t *testing.T) {
 	n1 := node.NewIdentifier("test node")
 	n2 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -164,7 +164,7 @@ func TestNewNodeListTokenPosition(t *testing.T) {
 	n2 := node.NewIdentifier("test node")
 	tkn := scanner.NewToken([]byte(`foo`), 3, 3, 20, 22)
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -193,7 +193,7 @@ func TestNewTokenNodeListPosition(t *testing.T) {
 	n1 := node.NewIdentifier("test node")
 	n2 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 2,
@@ -222,7 +222,7 @@ func TestNewNodeNodeListPosition(t *testing.T) {
 	n2 := node.NewIdentifier("test node")
 	n3 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -253,7 +253,7 @@ func TestNewNodeNodeListPosition(t *testing.T) {
 }
 
 func TestNewOptionalListTokensPosition(t *testing.T) {
-	builder := parser.Builder{}
+	builder := parser.PositionBuilder{}
 
 	token1 := scanner.NewToken([]byte(`foo`), 1, 1, 0, 3)
 	token2 := scanner.NewToken([]byte(`foo`), 2, 2, 4, 6)
@@ -270,7 +270,7 @@ func TestNewOptionalListTokensPosition2(t *testing.T) {
 	n2 := node.NewIdentifier("test node")
 	n3 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -304,7 +304,7 @@ func TestNewOptionalListTokensPosition2(t *testing.T) {
 }
 
 func TestNilNodePos(t *testing.T) {
-	builder := parser.Builder{}
+	builder := parser.PositionBuilder{}
 
 	pos := builder.NewNodesPosition(nil, nil)
 
@@ -316,7 +316,7 @@ func TestNilNodePos(t *testing.T) {
 func TestNilNodeListPos(t *testing.T) {
 	n1 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -337,7 +337,7 @@ func TestNilNodeListPos(t *testing.T) {
 func TestNilNodeListTokenPos(t *testing.T) {
 	token1 := scanner.NewToken([]byte(`foo`), 1, 1, 0, 3)
 
-	builder := parser.Builder{}
+	builder := parser.PositionBuilder{}
 
 	pos := builder.NewNodeListTokenPosition(nil, token1)
 
@@ -349,7 +349,7 @@ func TestNilNodeListTokenPos(t *testing.T) {
 func TestEmptyNodeListPos(t *testing.T) {
 	n1 := node.NewIdentifier("test node")
 
-	builder := parser.Builder{
+	builder := parser.PositionBuilder{
 		Positions: &parser.Positions{
 			n1: &position.Position{
 				StartLine: 1,
@@ -370,7 +370,7 @@ func TestEmptyNodeListPos(t *testing.T) {
 func TestEmptyNodeListTokenPos(t *testing.T) {
 	token1 := scanner.NewToken([]byte(`foo`), 1, 1, 0, 3)
 
-	builder := parser.Builder{}
+	builder := parser.PositionBuilder{}
 
 	pos := builder.NewNodeListTokenPosition([]node.Node{}, token1)
 
diff --git a/php5/parser.go b/php5/parser.go
index 1285cd7..7af4208 100644
--- a/php5/parser.go
+++ b/php5/parser.go
@@ -19,7 +19,7 @@ type Parser struct {
 	*scanner.Lexer
 	path            string
 	lastToken       *scanner.Token
-	positionBuilder *parser.Builder
+	positionBuilder *parser.PositionBuilder
 	errors          []*errors.Error
 	rootNode        node.Node
 	comments        parser.Comments
@@ -63,7 +63,7 @@ func (l *Parser) Parse() int {
 	l.rootNode = nil
 	l.comments = parser.Comments{}
 	l.positions = parser.Positions{}
-	l.positionBuilder = &parser.Builder{
+	l.positionBuilder = &parser.PositionBuilder{
 		Positions: &l.positions,
 	}
 
diff --git a/php7/parser.go b/php7/parser.go
index 21f48f4..e461c24 100644
--- a/php7/parser.go
+++ b/php7/parser.go
@@ -19,7 +19,7 @@ type Parser struct {
 	*scanner.Lexer
 	path            string
 	lastToken       *scanner.Token
-	positionBuilder *parser.Builder
+	positionBuilder *parser.PositionBuilder
 	errors          []*errors.Error
 	rootNode        node.Node
 	comments        parser.Comments
@@ -63,7 +63,7 @@ func (l *Parser) Parse() int {
 	l.rootNode = nil
 	l.comments = parser.Comments{}
 	l.positions = parser.Positions{}
-	l.positionBuilder = &parser.Builder{
+	l.positionBuilder = &parser.PositionBuilder{
 		Positions: &l.positions,
 	}