[PATCH] D111332: [AST Matchers] Update dump_ast_matchers.py to query only class index page.

[Yitzhak Mandelbaum via Phabricator via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rG3ab238af4fa4: [AST Matchers] Update dump_ast_matchers.py to query only class index page. (authored by jcking1034, committed by ymandel).

Changed prior to commit:
  https://reviews.llvm.org/D111332?vs=378279&id=378304#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D111332/new/

https://reviews.llvm.org/D111332

Files:
  clang/docs/tools/dump_ast_matchers.py


Index: clang/docs/tools/dump_ast_matchers.py
===================================================================
--- clang/docs/tools/dump_ast_matchers.py
+++ clang/docs/tools/dump_ast_matchers.py
@@ -10,6 +10,12 @@
 except ImportError:
     from urllib2 import urlopen
 
+CLASS_INDEX_PAGE_URL = 'https://clang.llvm.org/doxygen/classes.html'
+try:
+  CLASS_INDEX_PAGE = urlopen(CLASS_INDEX_PAGE_URL).read()
+except Exception as e:
+  raise Exception('Unable to get %s: %s' % (CLASS_INDEX_PAGE_URL, e))
+
 MATCHERS_FILE = '../../include/clang/ASTMatchers/ASTMatchers.h'
 
 # Each matcher is documented in one row of the form:
@@ -40,15 +46,18 @@
   text = re.sub(r'<', '<', text)
   text = re.sub(r'>', '>', text)
   def link_if_exists(m):
+    """Wrap a likely AST node name in a link to its clang docs.
+
+       We want to do this only if the page exists, in which case it will be
+       referenced from the class index page.
+    """
     name = m.group(1)
     url = 'https://clang.llvm.org/doxygen/classclang_1_1%s.html' % name
     if url not in doxygen_probes:
-      try:
-        print('Probing %s...' % url)
-        urlopen(url)
-        doxygen_probes[url] = True
-      except:
-        doxygen_probes[url] = False
+      search_str = 'href="classclang_1_1%s.html"' % name
+      doxygen_probes[url] = search_str in CLASS_INDEX_PAGE
+      if not doxygen_probes[url]:
+        print('Did not find %s in class index page' % name)
     if doxygen_probes[url]:
       return r'Matcher<<a href="%s">%s</a>>' % (url, name)
     else:


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