#80 implement Ragel based lexer

2019-03-10 23:37:01 +02:00
parent 9ca7109abe
commit 2c649159c7
108 changed files with 30415 additions and 18534 deletions
--- a/node/scalar/t_encapsed_test.go
+++ b/node/scalar/t_encapsed_test.go
@@ -1,7 +1,6 @@
 package scalar_test

 import (
-	"bytes"
 	"testing"

 	"gotest.tools/assert"
@@ -23,7 +22,7 @@ func TestSimpleVar(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    15,
 		},
 		Stmts: []node.Node{
@@ -31,14 +30,14 @@ func TestSimpleVar(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    15,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    14,
 					},
 					Parts: []node.Node{
@@ -46,7 +45,7 @@ func TestSimpleVar(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    9,
 							},
 							Value: "test ",
@@ -55,14 +54,14 @@ func TestSimpleVar(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  10,
+								StartPos:  9,
 								EndPos:    13,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  10,
+									StartPos:  9,
 									EndPos:    13,
 								},
 								Value: "var",
@@ -74,12 +73,12 @@ func TestSimpleVar(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -92,7 +91,7 @@ func TestSimpleVarOneChar(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    13,
 		},
 		Stmts: []node.Node{
@@ -100,14 +99,14 @@ func TestSimpleVarOneChar(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    13,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    12,
 					},
 					Parts: []node.Node{
@@ -115,7 +114,7 @@ func TestSimpleVarOneChar(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    9,
 							},
 							Value: "test ",
@@ -124,14 +123,14 @@ func TestSimpleVarOneChar(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  10,
+								StartPos:  9,
 								EndPos:    11,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  10,
+									StartPos:  9,
 									EndPos:    11,
 								},
 								Value: "a",
@@ -143,12 +142,12 @@ func TestSimpleVarOneChar(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -161,7 +160,7 @@ func TestSimpleVarEndsEcapsed(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    17,
 		},
 		Stmts: []node.Node{
@@ -169,14 +168,14 @@ func TestSimpleVarEndsEcapsed(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    17,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    16,
 					},
 					Parts: []node.Node{
@@ -184,7 +183,7 @@ func TestSimpleVarEndsEcapsed(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    9,
 							},
 							Value: "test ",
@@ -193,14 +192,14 @@ func TestSimpleVarEndsEcapsed(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  10,
+								StartPos:  9,
 								EndPos:    13,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  10,
+									StartPos:  9,
 									EndPos:    13,
 								},
 								Value: "var",
@@ -210,7 +209,7 @@ func TestSimpleVarEndsEcapsed(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  14,
+								StartPos:  13,
 								EndPos:    15,
 							},
 							Value: "\\\"",
@@ -221,12 +220,12 @@ func TestSimpleVarEndsEcapsed(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -239,7 +238,7 @@ func TestStringVarCurveOpen(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    13,
 		},
 		Stmts: []node.Node{
@@ -247,14 +246,14 @@ func TestStringVarCurveOpen(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    13,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    12,
 					},
 					Parts: []node.Node{
@@ -262,7 +261,7 @@ func TestStringVarCurveOpen(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    5,
 							},
 							Value: "=",
@@ -271,14 +270,14 @@ func TestStringVarCurveOpen(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  6,
+								StartPos:  5,
 								EndPos:    7,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  6,
+									StartPos:  5,
 									EndPos:    7,
 								},
 								Value: "a",
@@ -288,14 +287,14 @@ func TestStringVarCurveOpen(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  9,
+								StartPos:  8,
 								EndPos:    10,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  9,
+									StartPos:  8,
 									EndPos:    10,
 								},
 								Value: "b",
@@ -307,12 +306,12 @@ func TestStringVarCurveOpen(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -325,7 +324,7 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    22,
 		},
 		Stmts: []node.Node{
@@ -333,14 +332,14 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    22,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    21,
 					},
 					Parts: []node.Node{
@@ -348,7 +347,7 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    9,
 							},
 							Value: "test ",
@@ -357,21 +356,21 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  10,
+								StartPos:  9,
 								EndPos:    18,
 							},
 							Variable: &expr.Variable{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  10,
+									StartPos:  9,
 									EndPos:    13,
 								},
 								VarName: &node.Identifier{
 									Position: &position.Position{
 										StartLine: 1,
 										EndLine:   1,
-										StartPos:  10,
+										StartPos:  9,
 										EndPos:    13,
 									},
 									Value: "foo",
@@ -381,7 +380,7 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  16,
+									StartPos:  15,
 									EndPos:    18,
 								},
 								Value: "bar",
@@ -391,7 +390,7 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  19,
+								StartPos:  18,
 								EndPos:    20,
 							},
 							Value: "()",
@@ -402,12 +401,12 @@ func TestSimpleVarPropertyFetch(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -420,7 +419,7 @@ func TestDollarOpenCurlyBraces(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    17,
 		},
 		Stmts: []node.Node{
@@ -428,14 +427,14 @@ func TestDollarOpenCurlyBraces(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    17,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    16,
 					},
 					Parts: []node.Node{
@@ -443,7 +442,7 @@ func TestDollarOpenCurlyBraces(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    9,
 							},
 							Value: "test ",
@@ -452,14 +451,14 @@ func TestDollarOpenCurlyBraces(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  10,
+								StartPos:  9,
 								EndPos:    15,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  12,
+									StartPos:  11,
 									EndPos:    14,
 								},
 								Value: "foo",
@@ -471,12 +470,12 @@ func TestDollarOpenCurlyBraces(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -489,7 +488,7 @@ func TestDollarOpenCurlyBracesDimNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    20,
 		},
 		Stmts: []node.Node{
@@ -497,14 +496,14 @@ func TestDollarOpenCurlyBracesDimNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    20,
 				},
 				Expr: &scalar.Encapsed{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    19,
 					},
 					Parts: []node.Node{
@@ -512,7 +511,7 @@ func TestDollarOpenCurlyBracesDimNumber(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  5,
+								StartPos:  4,
 								EndPos:    9,
 							},
 							Value: "test ",
@@ -521,95 +520,9 @@ func TestDollarOpenCurlyBracesDimNumber(t *testing.T) {
 							Position: &position.Position{
 								StartLine: 1,
 								EndLine:   1,
-								StartPos:  10,
+								StartPos:  9,
 								EndPos:    18,
 							},
-							Variable: &expr.Variable{
-								Position: &position.Position{
-									StartLine: 1,
-									EndLine:   1,
-									StartPos:  12,
-									EndPos:    14,
-								},
-								VarName: &node.Identifier{
-									Position: &position.Position{
-										StartLine: 1,
-										EndLine:   1,
-										StartPos:  12,
-										EndPos:    14,
-									},
-									Value: "foo",
-								},
-							},
-							Dim: &scalar.Lnumber{
-								Position: &position.Position{
-									StartLine: 1,
-									EndLine:   1,
-									StartPos:  16,
-									EndPos:    16,
-								},
-								Value: "0",
-							},
-						},
-					},
-				},
-			},
-		},
-	}
-
-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
-	php7parser.Parse()
-	actual := php7parser.GetRootNode()
-	assert.DeepEqual(t, expected, actual)
-
-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
-	php5parser.Parse()
-	actual = php5parser.GetRootNode()
-	assert.DeepEqual(t, expected, actual)
-}
-
-func TestCurlyOpenMethodCall(t *testing.T) {
-	src := `<? "test {$foo->bar()}";`
-
-	expected := &node.Root{
-		Position: &position.Position{
-			StartLine: 1,
-			EndLine:   1,
-			StartPos:  4,
-			EndPos:    24,
-		},
-		Stmts: []node.Node{
-			&stmt.Expression{
-				Position: &position.Position{
-					StartLine: 1,
-					EndLine:   1,
-					StartPos:  4,
-					EndPos:    24,
-				},
-				Expr: &scalar.Encapsed{
-					Position: &position.Position{
-						StartLine: 1,
-						EndLine:   1,
-						StartPos:  4,
-						EndPos:    23,
-					},
-					Parts: []node.Node{
-						&scalar.EncapsedStringPart{
-							Position: &position.Position{
-								StartLine: 1,
-								EndLine:   1,
-								StartPos:  5,
-								EndPos:    9,
-							},
-							Value: "test ",
-						},
-						&expr.MethodCall{
-							Position: &position.Position{
-								StartLine: 1,
-								EndLine:   1,
-								StartPos:  11,
-								EndPos:    21,
-							},
 							Variable: &expr.Variable{
 								Position: &position.Position{
 									StartLine: 1,
@@ -627,11 +540,97 @@ func TestCurlyOpenMethodCall(t *testing.T) {
 									Value: "foo",
 								},
 							},
+							Dim: &scalar.Lnumber{
+								Position: &position.Position{
+									StartLine: 1,
+									EndLine:   1,
+									StartPos:  15,
+									EndPos:    16,
+								},
+								Value: "0",
+							},
+						},
+					},
+				},
+			},
+		},
+	}
+
+	php7parser := php7.NewParser([]byte(src))
+	php7parser.Parse()
+	actual := php7parser.GetRootNode()
+	assert.DeepEqual(t, expected, actual)
+
+	php5parser := php5.NewParser([]byte(src))
+	php5parser.Parse()
+	actual = php5parser.GetRootNode()
+	assert.DeepEqual(t, expected, actual)
+}
+
+func TestCurlyOpenMethodCall(t *testing.T) {
+	src := `<? "test {$foo->bar()}";`
+
+	expected := &node.Root{
+		Position: &position.Position{
+			StartLine: 1,
+			EndLine:   1,
+			StartPos:  3,
+			EndPos:    24,
+		},
+		Stmts: []node.Node{
+			&stmt.Expression{
+				Position: &position.Position{
+					StartLine: 1,
+					EndLine:   1,
+					StartPos:  3,
+					EndPos:    24,
+				},
+				Expr: &scalar.Encapsed{
+					Position: &position.Position{
+						StartLine: 1,
+						EndLine:   1,
+						StartPos:  3,
+						EndPos:    23,
+					},
+					Parts: []node.Node{
+						&scalar.EncapsedStringPart{
+							Position: &position.Position{
+								StartLine: 1,
+								EndLine:   1,
+								StartPos:  4,
+								EndPos:    9,
+							},
+							Value: "test ",
+						},
+						&expr.MethodCall{
+							Position: &position.Position{
+								StartLine: 1,
+								EndLine:   1,
+								StartPos:  10,
+								EndPos:    21,
+							},
+							Variable: &expr.Variable{
+								Position: &position.Position{
+									StartLine: 1,
+									EndLine:   1,
+									StartPos:  10,
+									EndPos:    14,
+								},
+								VarName: &node.Identifier{
+									Position: &position.Position{
+										StartLine: 1,
+										EndLine:   1,
+										StartPos:  10,
+										EndPos:    14,
+									},
+									Value: "foo",
+								},
+							},
 							Method: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  17,
+									StartPos:  16,
 									EndPos:    19,
 								},
 								Value: "bar",
@@ -640,7 +639,7 @@ func TestCurlyOpenMethodCall(t *testing.T) {
 								Position: &position.Position{
 									StartLine: 1,
 									EndLine:   1,
-									StartPos:  20,
+									StartPos:  19,
 									EndPos:    21,
 								},
 							},
@@ -651,12 +650,12 @@ func TestCurlyOpenMethodCall(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
--- a/node/scalar/t_heredoc_test.go
+++ b/node/scalar/t_heredoc_test.go
@@ -1,7 +1,6 @@
 package scalar_test

 import (
-	"bytes"
 	"testing"

 	"gotest.tools/assert"
@@ -26,7 +25,7 @@ LBL;
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   3,
-			StartPos:  7,
+			StartPos:  3,
 			EndPos:    24,
 		},
 		Stmts: []node.Node{
@@ -34,23 +33,23 @@ LBL;
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   3,
-					StartPos:  7,
+					StartPos:  3,
 					EndPos:    24,
 				},
 				Expr: &scalar.Heredoc{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   3,
-						StartPos:  7,
+						StartPos:  3,
 						EndPos:    23,
 					},
-					Label: "LBL",
+					Label: "<<<LBL\n",
 					Parts: []node.Node{
 						&scalar.EncapsedStringPart{
 							Position: &position.Position{
 								StartLine: 2,
 								EndLine:   2,
-								StartPos:  11,
+								StartPos:  10,
 								EndPos:    15,
 							},
 							Value: "test ",
@@ -59,31 +58,40 @@ LBL;
 							Position: &position.Position{
 								StartLine: 2,
 								EndLine:   2,
-								StartPos:  16,
+								StartPos:  15,
 								EndPos:    19,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 2,
 									EndLine:   2,
-									StartPos:  16,
+									StartPos:  15,
 									EndPos:    19,
 								},
 								Value: "var",
 							},
 						},
+						&scalar.EncapsedStringPart{
+							Position: &position.Position{
+								StartLine: 2,
+								EndLine:   2,
+								StartPos:  19,
+								EndPos:    20,
+							},
+							Value: "\n",
+						},
 					},
 				},
 			},
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -99,7 +107,7 @@ LBL;
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   3,
-			StartPos:  7,
+			StartPos:  3,
 			EndPos:    26,
 		},
 		Stmts: []node.Node{
@@ -107,23 +115,23 @@ LBL;
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   3,
-					StartPos:  7,
+					StartPos:  3,
 					EndPos:    26,
 				},
 				Expr: &scalar.Heredoc{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   3,
-						StartPos:  7,
+						StartPos:  3,
 						EndPos:    25,
 					},
-					Label: "\"LBL\"",
+					Label: "<<<\"LBL\"\n",
 					Parts: []node.Node{
 						&scalar.EncapsedStringPart{
 							Position: &position.Position{
 								StartLine: 2,
 								EndLine:   2,
-								StartPos:  13,
+								StartPos:  12,
 								EndPos:    17,
 							},
 							Value: "test ",
@@ -132,31 +140,40 @@ LBL;
 							Position: &position.Position{
 								StartLine: 2,
 								EndLine:   2,
-								StartPos:  18,
+								StartPos:  17,
 								EndPos:    21,
 							},
 							VarName: &node.Identifier{
 								Position: &position.Position{
 									StartLine: 2,
 									EndLine:   2,
-									StartPos:  18,
+									StartPos:  17,
 									EndPos:    21,
 								},
 								Value: "var",
 							},
 						},
+						&scalar.EncapsedStringPart{
+							Position: &position.Position{
+								StartLine: 2,
+								EndLine:   2,
+								StartPos:  21,
+								EndPos:    22,
+							},
+							Value: "\n",
+						},
 					},
 				},
 			},
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -172,7 +189,7 @@ LBL;
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   3,
-			StartPos:  7,
+			StartPos:  3,
 			EndPos:    26,
 		},
 		Stmts: []node.Node{
@@ -180,26 +197,26 @@ LBL;
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   3,
-					StartPos:  7,
+					StartPos:  3,
 					EndPos:    26,
 				},
 				Expr: &scalar.Heredoc{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   3,
-						StartPos:  7,
+						StartPos:  3,
 						EndPos:    25,
 					},
-					Label: "'LBL'",
+					Label: "<<<'LBL'\n",
 					Parts: []node.Node{
 						&scalar.EncapsedStringPart{
 							Position: &position.Position{
 								StartLine: 2,
 								EndLine:   2,
-								StartPos:  13,
-								EndPos:    21,
+								StartPos:  12,
+								EndPos:    22,
 							},
-							Value: "test $var",
+							Value: "test $var\n",
 						},
 					},
 				},
@@ -207,12 +224,12 @@ LBL;
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -227,7 +244,7 @@ CAD;
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   2,
-			StartPos:  7,
+			StartPos:  3,
 			EndPos:    14,
 		},
 		Stmts: []node.Node{
@@ -235,28 +252,28 @@ CAD;
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   2,
-					StartPos:  7,
+					StartPos:  3,
 					EndPos:    14,
 				},
 				Expr: &scalar.Heredoc{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   2,
-						StartPos:  7,
+						StartPos:  3,
 						EndPos:    13,
 					},
-					Label: "CAD",
+					Label: "<<<CAD\n",
 				},
 			},
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -272,7 +289,7 @@ CAD;
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   3,
-			StartPos:  7,
+			StartPos:  3,
 			EndPos:    21,
 		},
 		Stmts: []node.Node{
@@ -280,26 +297,26 @@ CAD;
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   3,
-					StartPos:  7,
+					StartPos:  3,
 					EndPos:    21,
 				},
 				Expr: &scalar.Heredoc{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   3,
-						StartPos:  7,
+						StartPos:  3,
 						EndPos:    20,
 					},
-					Label: "CAD",
+					Label: "<<<CAD\n",
 					Parts: []node.Node{
 						&scalar.EncapsedStringPart{
 							Position: &position.Position{
 								StartLine: 2,
 								EndLine:   2,
-								StartPos:  11,
-								EndPos:    16,
+								StartPos:  10,
+								EndPos:    17,
 							},
-							Value: "\thello",
+							Value: "\thello\n",
 						},
 					},
 				},
@@ -307,12 +324,12 @@ CAD;
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
--- a/node/scalar/t_magic_constant_test.go
+++ b/node/scalar/t_magic_constant_test.go
@@ -1,7 +1,6 @@
 package scalar_test

 import (
-	"bytes"
 	"testing"

 	"gotest.tools/assert"
@@ -22,7 +21,7 @@ func TestMagicConstant(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    11,
 		},
 		Stmts: []node.Node{
@@ -30,14 +29,14 @@ func TestMagicConstant(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    11,
 				},
 				Expr: &scalar.MagicConstant{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    10,
 					},
 					Value: "__DIR__",
@@ -46,12 +45,12 @@ func TestMagicConstant(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
--- a/node/scalar/t_numbers_test.go
+++ b/node/scalar/t_numbers_test.go
@@ -1,7 +1,6 @@
 package scalar_test

 import (
-	"bytes"
 	"testing"

 	"gotest.tools/assert"
@@ -21,7 +20,7 @@ func TestLNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    23,
 		},
 		Stmts: []node.Node{
@@ -29,14 +28,14 @@ func TestLNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    23,
 				},
 				Expr: &scalar.Lnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    22,
 					},
 					Value: "1234567890123456789",
@@ -45,12 +44,12 @@ func TestLNumber(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -63,7 +62,7 @@ func TestDNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    24,
 		},
 		Stmts: []node.Node{
@@ -71,14 +70,14 @@ func TestDNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    24,
 				},
 				Expr: &scalar.Dnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    23,
 					},
 					Value: "12345678901234567890",
@@ -87,12 +86,12 @@ func TestDNumber(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -105,7 +104,7 @@ func TestFloat(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    6,
 		},
 		Stmts: []node.Node{
@@ -113,14 +112,14 @@ func TestFloat(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    6,
 				},
 				Expr: &scalar.Dnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    5,
 					},
 					Value: "0.",
@@ -129,12 +128,12 @@ func TestFloat(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -147,7 +146,7 @@ func TestBinaryLNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    70,
 		},
 		Stmts: []node.Node{
@@ -155,14 +154,14 @@ func TestBinaryLNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    70,
 				},
 				Expr: &scalar.Lnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    69,
 					},
 					Value: "0b0111111111111111111111111111111111111111111111111111111111111111",
@@ -171,12 +170,12 @@ func TestBinaryLNumber(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -189,7 +188,7 @@ func TestBinaryDNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    70,
 		},
 		Stmts: []node.Node{
@@ -197,14 +196,14 @@ func TestBinaryDNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    70,
 				},
 				Expr: &scalar.Dnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    69,
 					},
 					Value: "0b1111111111111111111111111111111111111111111111111111111111111111",
@@ -213,12 +212,12 @@ func TestBinaryDNumber(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -231,7 +230,7 @@ func TestHLNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    24,
 		},
 		Stmts: []node.Node{
@@ -239,14 +238,14 @@ func TestHLNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    24,
 				},
 				Expr: &scalar.Lnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    23,
 					},
 					Value: "0x007111111111111111",
@@ -255,12 +254,12 @@ func TestHLNumber(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -273,7 +272,7 @@ func TestHDNumber(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    22,
 		},
 		Stmts: []node.Node{
@@ -281,14 +280,14 @@ func TestHDNumber(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    22,
 				},
 				Expr: &scalar.Dnumber{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    21,
 					},
 					Value: "0x8111111111111111",
@@ -297,12 +296,12 @@ func TestHDNumber(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
--- a/node/scalar/t_string_test.go
+++ b/node/scalar/t_string_test.go
@@ -1,7 +1,6 @@
 package scalar_test

 import (
-	"bytes"
 	"testing"

 	"gotest.tools/assert"
@@ -21,7 +20,7 @@ func TestDoubleQuotedScalarString(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    10,
 		},
 		Stmts: []node.Node{
@@ -29,14 +28,14 @@ func TestDoubleQuotedScalarString(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    10,
 				},
 				Expr: &scalar.String{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    9,
 					},
 					Value: "\"test\"",
@@ -45,12 +44,12 @@ func TestDoubleQuotedScalarString(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -63,7 +62,7 @@ func TestDoubleQuotedScalarStringWithEscapedVar(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    12,
 		},
 		Stmts: []node.Node{
@@ -71,14 +70,14 @@ func TestDoubleQuotedScalarStringWithEscapedVar(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    12,
 				},
 				Expr: &scalar.String{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    11,
 					},
 					Value: "\"\\$test\"",
@@ -87,12 +86,12 @@ func TestDoubleQuotedScalarStringWithEscapedVar(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -107,7 +106,7 @@ func TestMultilineDoubleQuotedScalarString(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   3,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    14,
 		},
 		Stmts: []node.Node{
@@ -115,14 +114,14 @@ func TestMultilineDoubleQuotedScalarString(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   3,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    14,
 				},
 				Expr: &scalar.String{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   3,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    13,
 					},
 					Value: "\"\n\ttest\n\t\"",
@@ -131,12 +130,12 @@ func TestMultilineDoubleQuotedScalarString(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -149,7 +148,7 @@ func TestSingleQuotedScalarString(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   1,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    11,
 		},
 		Stmts: []node.Node{
@@ -157,14 +156,14 @@ func TestSingleQuotedScalarString(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   1,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    11,
 				},
 				Expr: &scalar.String{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   1,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    10,
 					},
 					Value: "'$test'",
@@ -173,12 +172,12 @@ func TestSingleQuotedScalarString(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)
@@ -193,7 +192,7 @@ func TestMultilineSingleQuotedScalarString(t *testing.T) {
 		Position: &position.Position{
 			StartLine: 1,
 			EndLine:   3,
-			StartPos:  4,
+			StartPos:  3,
 			EndPos:    15,
 		},
 		Stmts: []node.Node{
@@ -201,14 +200,14 @@ func TestMultilineSingleQuotedScalarString(t *testing.T) {
 				Position: &position.Position{
 					StartLine: 1,
 					EndLine:   3,
-					StartPos:  4,
+					StartPos:  3,
 					EndPos:    15,
 				},
 				Expr: &scalar.String{
 					Position: &position.Position{
 						StartLine: 1,
 						EndLine:   3,
-						StartPos:  4,
+						StartPos:  3,
 						EndPos:    14,
 					},
 					Value: "'\n\t$test\n\t'",
@@ -217,12 +216,12 @@ func TestMultilineSingleQuotedScalarString(t *testing.T) {
 		},
 	}

-	php7parser := php7.NewParser(bytes.NewBufferString(src), "test.php")
+	php7parser := php7.NewParser([]byte(src))
 	php7parser.Parse()
 	actual := php7parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)

-	php5parser := php5.NewParser(bytes.NewBufferString(src), "test.php")
+	php5parser := php5.NewParser([]byte(src))
 	php5parser.Parse()
 	actual = php5parser.GetRootNode()
 	assert.DeepEqual(t, expected, actual)