com php-langspec: Add grammar regeneration tool: tools/grammar.php tools/util.php

Commit:    c9f5fd0cdd19a1ebc1c0571662e85e0e2385b1c0=0AAuthor:    Nikita Pop=
ov <[email protected]>         Sat, 12 Nov 2016 12:48:53 +0100=0AParents:   7cd=
2faa0f81851a7f8891834bb4dc069a1e4f277=0ABranches:  master=0A=0ALink:       =
http://git.php.net/?p=3Dphp-langspec.git;a=3Dcommitdiff;h=3Dc9f5fd0cdd19a1e=
bc1c0571662e85e0e2385b1c0=0A=0ALog:=0AAdd grammar regeneration tool=0A=0ACh=
anged paths:=0A  A  tools/grammar.php=0A  M  tools/util.php=0A=0A=0ADiff:=
=0Adiff --git a/tools/grammar.php b/tools/grammar.php=0Anew file mode 10064=
4=0Aindex 0000000..81e8c48=0A--- /dev/null=0A+++ b/tools/grammar.php=0A@@ -=
0,0 +1,68 @@=0A+<?php error_reporting(E_ALL);=0A+=0A+require __DIR__ . '/ut=
il.php';=0A+=0A+$dir =3D __DIR__ . '/../spec/';=0A+$grammarFile =3D $dir . =
'19-grammar.md';=0A+=0A+$output =3D <<<'END'=0A+#Grammar=0A+=0A+##General=
=0A+=0A+The grammar notation is described in [Grammars section](09-lexical-=
structure.md#grammars).=0A+=0A+##Lexical Grammar=0A+=0A+=0A+END;=0A+=0A+$le=
xical =3D file_get_contents($dir . '09-lexical-structure.md');=0A+$lexical =
=3D strstr($lexical, '##Lexical analysis');=0A+$output .=3D extract_grammar=
($lexical);=0A+=0A+$output .=3D "\n\n##Syntactic Grammar";=0A+=0A+foreach (=
spec_files() as $fileName =3D> $path) {=0A+    if ($fileName =3D=3D=3D '05-=
types.md' || $fileName =3D=3D=3D '09-lexical-structure.md') {=0A+        co=
ntinue;=0A+    }=0A+=0A+    $code =3D file_get_contents($path);=0A+    $gra=
mmar =3D extract_grammar($code);=0A+    if (null =3D=3D=3D $grammar) {=0A+ =
       continue;=0A+    }=0A+=0A+    $heading =3D extract_heading($code);=
=0A+    $output .=3D "\n\n###$heading\n\n" . $grammar;=0A+}=0A+=0A+$output =
.=3D "\n";=0A+=0A+file_put_contents($grammarFile, $output);=0A+=0A+function=
 extract_heading($code) {=0A+    if (!preg_match('/#\s*(.*)/', $code, $matc=
hes)) {=0A+        throw new Exception('No heading found');=0A+    }=0A+=0A=
+    return $matches[1];=0A+}=0A+=0A+function extract_grammar($code) {=0A+ =
   if (!preg_match_all('(<pre>(.*?)</pre>)s', $code, $matches)) {=0A+      =
  return null;=0A+    }=0A+=0A+    $parts =3D [];=0A+    foreach ($matches[=
1] as $match) {=0A+        if (!preg_match('/^\s*<i>.*:.*<\/i>/', $match)) =
{=0A+            continue;=0A+        }=0A+        $parts[] =3D '  ' . trim=
($match);=0A+    }=0A+=0A+    $rawGrammar =3D implode("\n\n", $parts);=0A+ =
   return "<pre>\n$rawGrammar\n</pre>";=0A+}=0Adiff --git a/tools/util.php =
b/tools/util.php=0Aindex 52a8a99..2a5d426 100644=0A--- a/tools/util.php=0A+=
++ b/tools/util.php=0A@@ -9,7 +9,9 @@ function spec_files() {=0A         if=
 (pathinfo($file, PATHINFO_EXTENSION) !=3D 'md') {=0A             continue;=
=0A         }=0A-        if ($file =3D=3D '00-specification-for-php.md' || =
$file =3D=3D 'php-spec-draft.md') {=0A+        if ($file =3D=3D '00-specifi=
cation-for-php.md'=0A+                || $file =3D=3D '19-grammar.md'=0A+  =
              || $file =3D=3D 'php-spec-draft.md') {=0A             continu=
e;=0A         }=0A