Prevent off-by-one errors in line-number related methods

lib/PhpParser/Comment.php

@@ -46,6 +46,7 @@ public function getText(): string {
      * Gets the line number the comment started on.
      *
      * @return int Line number (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getStartLine(): int {
         return $this->startLine;
@@ -73,6 +74,7 @@ public function getStartTokenPos(): int {
      * Gets the line number the comment ends on.
      *
      * @return int Line number (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getEndLine(): int {
         return $this->endLine;

lib/PhpParser/Error.php

@@ -32,6 +32,7 @@ public function getRawMessage(): string {
      * Gets the line the error starts in.
      *
      * @return int Error start line
+     * @phpstan-return -1|positive-int
      */
     public function getStartLine(): int {
         return $this->attributes['startLine'] ?? -1;
@@ -41,6 +42,7 @@ public function getStartLine(): int {
      * Gets the line the error ends in.
      *
      * @return int Error end line
+     * @phpstan-return -1|positive-int
      */
     public function getEndLine(): int {
         return $this->attributes['endLine'] ?? -1;

lib/PhpParser/Node.php

@@ -21,6 +21,7 @@ public function getSubNodeNames(): array;
      * Gets line the node started in (alias of getStartLine).
      *
      * @return int Start line (or -1 if not available)
+     * @phpstan-return -1|positive-int
      *
      * @deprecated Use getStartLine() instead
      */
@@ -32,6 +33,7 @@ public function getLine(): int;
      * Requires the 'startLine' attribute to be enabled in the lexer (enabled by default).
      *
      * @return int Start line (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getStartLine(): int;
 
@@ -41,6 +43,7 @@ public function getStartLine(): int;
      * Requires the 'endLine' attribute to be enabled in the lexer (enabled by default).
      *
      * @return int End line (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getEndLine(): int;
 

lib/PhpParser/NodeAbstract.php

@@ -19,6 +19,7 @@ public function __construct(array $attributes = []) {
      * Gets line the node started in (alias of getStartLine).
      *
      * @return int Start line (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getLine(): int {
         return $this->attributes['startLine'] ?? -1;
@@ -30,6 +31,7 @@ public function getLine(): int {
      * Requires the 'startLine' attribute to be enabled in the lexer (enabled by default).
      *
      * @return int Start line (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getStartLine(): int {
         return $this->attributes['startLine'] ?? -1;
@@ -41,6 +43,7 @@ public function getStartLine(): int {
      * Requires the 'endLine' attribute to be enabled in the lexer (enabled by default).
      *
      * @return int End line (or -1 if not available)
+     * @phpstan-return -1|positive-int
      */
     public function getEndLine(): int {
         return $this->attributes['endLine'] ?? -1;