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- <?php
- /**
- * @property null|PHPParser_Node_Name $name Name
- * @property PHPParser_Node[] $stmts Statements
- */
- class PHPParser_Node_Stmt_Namespace extends PHPParser_Node_Stmt
- {
- protected static $specialNames = array(
- 'self' => true,
- 'parent' => true,
- 'static' => true,
- );
- /**
- * Constructs a namespace node.
- *
- * @param null|PHPParser_Node_Name $name Name
- * @param PHPParser_Node[] $stmts Statements
- * @param array $attributes Additional attributes
- */
- public function __construct(PHPParser_Node_Name $name = null, $stmts = array(), array $attributes = array()) {
- parent::__construct(
- array(
- 'name' => $name,
- 'stmts' => $stmts,
- ),
- $attributes
- );
- if (isset(self::$specialNames[(string) $this->name])) {
- throw new PHPParser_Error(sprintf('Cannot use "%s" as namespace name as it is reserved', $this->name));
- }
- if (null !== $this->stmts) {
- foreach ($this->stmts as $stmt) {
- if ($stmt instanceof PHPParser_Node_Stmt_Namespace) {
- throw new PHPParser_Error('Namespace declarations cannot be nested', $stmt->getLine());
- }
- }
- }
- }
- public static function postprocess(array $stmts) {
- // null = not in namespace, false = semicolon style, true = bracket style
- $bracketed = null;
- // whether any statements that aren't allowed before a namespace declaration are encountered
- // (the only valid statement currently is a declare)
- $hasNotAllowedStmts = false;
- // offsets for semicolon style namespaces
- // (required for transplanting the following statements into their ->stmts property)
- $nsOffsets = array();
- foreach ($stmts as $i => $stmt) {
- if ($stmt instanceof PHPParser_Node_Stmt_Namespace) {
- // ->stmts is null if semicolon style is used
- $currentBracketed = null !== $stmt->stmts;
- // if no namespace statement has been encountered yet
- if (!isset($bracketed)) {
- // set the namespacing style
- $bracketed = $currentBracketed;
- // and ensure that it isn't preceded by a not allowed statement
- if ($hasNotAllowedStmts) {
- throw new PHPParser_Error('Namespace declaration statement has to be the very first statement in the script', $stmt->getLine());
- }
- // otherwise ensure that the style of the current namespace matches the style of
- // namespaceing used before in this document
- } elseif ($bracketed !== $currentBracketed) {
- throw new PHPParser_Error('Cannot mix bracketed namespace declarations with unbracketed namespace declarations', $stmt->getLine());
- }
- // for semicolon style namespaces remember the offset
- if (!$bracketed) {
- $nsOffsets[] = $i;
- }
- // declare() and __halt_compiler() are the only valid statements outside of namespace declarations
- } elseif (!$stmt instanceof PHPParser_Node_Stmt_Declare
- && !$stmt instanceof PHPParser_Node_Stmt_HaltCompiler
- ) {
- if (true === $bracketed) {
- throw new PHPParser_Error('No code may exist outside of namespace {}', $stmt->getLine());
- }
- $hasNotAllowedStmts = true;
- }
- }
- // if bracketed namespaces were used or no namespaces were used at all just return the
- // original statements
- if (!isset($bracketed) || true === $bracketed) {
- return $stmts;
- // for semicolon style transplant statements
- } else {
- // take all statements preceding the first namespace
- $newStmts = array_slice($stmts, 0, $nsOffsets[0]);
- // iterate over all following namespaces
- for ($i = 0, $c = count($nsOffsets); $i < $c; ++$i) {
- $newStmts[] = $nsStmt = $stmts[$nsOffsets[$i]];
- // the last namespace takes all statements after it
- if ($c === $i + 1) {
- $nsStmt->stmts = array_slice($stmts, $nsOffsets[$i] + 1);
- // if the last statement is __halt_compiler() put it outside the namespace
- if (end($nsStmt->stmts) instanceof PHPParser_Node_Stmt_HaltCompiler) {
- $newStmts[] = array_pop($nsStmt->stmts);
- }
- // and all the others take all statements between the current and the following one
- } else {
- $nsStmt->stmts = array_slice($stmts, $nsOffsets[$i] + 1, $nsOffsets[$i + 1] - $nsOffsets[$i] - 1);
- }
- }
- return $newStmts;
- }
- }
- }
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