refactoring: remove ExprReference node

internal/php5/php5.go

@@ -3141,12 +3141,12 @@ yydefault:
 				foreach.Var = yyDollar[6].node.(*ast.StmtForeach).Var
 			}
 
-			if val, ok := foreach.Key.(*ast.ExprReference); ok {
+			if val, ok := foreach.Key.(*ast.StmtForeach); ok {
 				yylex.(*Parser).errHandlerFunc(errors.NewError("Key element cannot be a reference", val.AmpersandTkn.Position))
 				foreach.Key = val.Var
 			}
 
-			if val, ok := foreach.Var.(*ast.ExprReference); ok {
+			if val, ok := foreach.Var.(*ast.StmtForeach); ok {
 				foreach.AmpersandTkn = val.AmpersandTkn
 				foreach.Var = val.Var
 			}
@@ -3173,12 +3173,12 @@ yydefault:
 				foreach.Var = yyDollar[6].node.(*ast.StmtForeach).Var
 			}
 
-			if val, ok := foreach.Key.(*ast.ExprReference); ok {
+			if val, ok := foreach.Key.(*ast.StmtForeach); ok {
 				yylex.(*Parser).errHandlerFunc(errors.NewError("Key element cannot be a reference", val.AmpersandTkn.Position))
 				foreach.Key = val.Var
 			}
 
-			if val, ok := foreach.Var.(*ast.ExprReference); ok {
+			if val, ok := foreach.Var.(*ast.StmtForeach); ok {
 				foreach.AmpersandTkn = val.AmpersandTkn
 				foreach.Var = val.Var
 			}
@@ -3627,7 +3627,7 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		// line internal/php5/php5.y:1464
 		{
-			yyVAL.node = &ast.ExprReference{
+			yyVAL.node = &ast.StmtForeach{
 				Position:     yylex.(*Parser).builder.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
 				AmpersandTkn: yyDollar[1].token,
 				Var:          yyDollar[2].node,

internal/php5/php5.y

@@ -1000,12 +1000,12 @@ unticked_statement:
                     foreach.Var = $6.(*ast.StmtForeach).Var
                 }
 
-                if val, ok := foreach.Key.(*ast.ExprReference); ok {
+                if val, ok := foreach.Key.(*ast.StmtForeach); ok {
                     yylex.(*Parser).errHandlerFunc(errors.NewError("Key element cannot be a reference", val.AmpersandTkn.Position))
                     foreach.Key = val.Var
                 }
 
-                if val, ok := foreach.Var.(*ast.ExprReference); ok {
+                if val, ok := foreach.Var.(*ast.StmtForeach); ok {
                     foreach.AmpersandTkn    = val.AmpersandTkn
                     foreach.Var             = val.Var
                 }
@@ -1030,12 +1030,12 @@ unticked_statement:
                     foreach.Var = $6.(*ast.StmtForeach).Var
                 }
 
-                if val, ok := foreach.Key.(*ast.ExprReference); ok {
+                if val, ok := foreach.Key.(*ast.StmtForeach); ok {
                     yylex.(*Parser).errHandlerFunc(errors.NewError("Key element cannot be a reference", val.AmpersandTkn.Position))
                     foreach.Key = val.Var
                 }
 
-                if val, ok := foreach.Var.(*ast.ExprReference); ok {
+                if val, ok := foreach.Var.(*ast.StmtForeach); ok {
                     foreach.AmpersandTkn    = val.AmpersandTkn
                     foreach.Var             = val.Var
                 }
@@ -1462,7 +1462,7 @@ foreach_variable:
             }
     |   '&' variable
             {
-                $$ = &ast.ExprReference{
+                $$ = &ast.StmtForeach{
                     Position: yylex.(*Parser).builder.NewTokenNodePosition($1, $2),
                     AmpersandTkn: $1,
                     Var:          $2,

internal/php7/php7.go

@@ -3319,7 +3319,7 @@ yydefault:
 			foreach.Var = yyDollar[5].node
 			foreach.CloseParenthesisTkn = yyDollar[6].token
 
-			if val, ok := yyDollar[5].node.(*ast.ExprReference); ok {
+			if val, ok := yyDollar[5].node.(*ast.StmtForeach); ok {
 				foreach.AmpersandTkn = val.AmpersandTkn
 				foreach.Var = val.Var
 			}
@@ -3342,7 +3342,7 @@ yydefault:
 			foreach.Var = yyDollar[7].node
 			foreach.CloseParenthesisTkn = yyDollar[8].token
 
-			if val, ok := yyDollar[7].node.(*ast.ExprReference); ok {
+			if val, ok := yyDollar[7].node.(*ast.StmtForeach); ok {
 				foreach.AmpersandTkn = val.AmpersandTkn
 				foreach.Var = val.Var
 			}
@@ -3731,7 +3731,7 @@ yydefault:
 		yyDollar = yyS[yypt-2 : yypt+1]
 		// line internal/php7/php7.y:1361
 		{
-			yyVAL.node = &ast.ExprReference{
+			yyVAL.node = &ast.StmtForeach{
 				Position:     yylex.(*Parser).builder.NewTokenNodePosition(yyDollar[1].token, yyDollar[2].node),
 				AmpersandTkn: yyDollar[1].token,
 				Var:          yyDollar[2].node,

internal/php7/php7.y

@@ -972,7 +972,7 @@ statement:
                 foreach.Var                 = $5
                 foreach.CloseParenthesisTkn = $6
 
-                if val, ok := $5.(*ast.ExprReference); ok {
+                if val, ok := $5.(*ast.StmtForeach); ok {
                     foreach.AmpersandTkn    = val.AmpersandTkn
                     foreach.Var             = val.Var
                 }
@@ -993,7 +993,7 @@ statement:
                 foreach.Var                 = $7
                 foreach.CloseParenthesisTkn = $8
 
-                if val, ok := $7.(*ast.ExprReference); ok {
+                if val, ok := $7.(*ast.StmtForeach); ok {
                     foreach.AmpersandTkn    = val.AmpersandTkn
                     foreach.Var             = val.Var
                 }
@@ -1359,7 +1359,7 @@ foreach_variable:
             }
     |   '&' variable
             {
-                $$ = &ast.ExprReference{
+                $$ = &ast.StmtForeach{
                     Position: yylex.(*Parser).builder.NewTokenNodePosition($1, $2),
                     AmpersandTkn: $1,
                     Var:          $2,