Remove unused method Result::buffer()

Author: thekid

src/main/php/lang/ast/Result.class.php

@@ -1,7 +1,5 @@
 <?php namespace lang\ast;
 
-use io\streams\{MemoryOutputStream, StringWriter};
-
 class Result {
   public $out;
   public $codegen;
@@ -31,23 +29,4 @@ public function __construct($out, $preamble= '<?php ') {
   public function temp() {
     return '$'.$this->codegen->symbol();
   }
-
-  /**
-   * Collects emitted code into a buffer and returns it
-   *
-   * @param  function(lang.ast.Result): void $callable
-   * @return string
-   */
-  public function buffer($callable) {
-    $out= $this->out;
-    $buffer= new MemoryOutputStream();
-    $this->out= new StringWriter($buffer);
-
-    try {
-      $callable($this);
-      return $buffer->getBytes();
-    } finally {
-      $this->out= $out;
-    }
-  }
 }

src/test/php/lang/ast/unittest/ResultTest.class.php

@@ -30,15 +30,4 @@ public function writes_preamble($preamble) {
     $r= new Result(new StringWriter($out), $preamble);
     Assert::equals($preamble, $out->bytes());
   }
-
-  #[Test]
-  public function writing_via_buffer_does_not_affect_underlying_output() {
-    $out= new MemoryOutputStream();
-    $r= new Result(new StringWriter($out));
-    $r->buffer(function($r) {
-      $r->out->write('namespace test;');
-      $r->out->write('use unittest\Assert;');
-    });
-    Assert::equals('<?php ', $out->bytes());
-  }
 }