# HG changeset patch
# User FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
# Date 1466437839 -32400
# Node ID 2a54cf92c773777f8a5c821c6831c945eb4131c0
# Parent  844f72885fb9f4a2c4a7eda72549f4d772f87179
check-code: build translation table for repquote in global for efficiency

Rebuilding translation table (256 size) at each repquote() invocations
is redundant.

For example, this patch decreases user time of command invocation
below from 18.297s to 13.445s (about -27%) on a Linux box. This
command is main part of test-check-code.t.

    hg locate | xargs python contrib/check-code.py --warnings --per-file=0

This patch adds "_repquote" prefix to functions and variables factored
out from repquote() to avoid conflict of name in the future.

diff -r 844f72885fb9 -r 2a54cf92c773 contrib/check-code.py
--- a/contrib/check-code.py	Tue Jun 21 00:50:39 2016 +0900
+++ b/contrib/check-code.py	Tue Jun 21 00:50:39 2016 +0900
@@ -50,25 +50,26 @@
             pass
     return re.compile(pat)
 
+# check "rules depending on implementation of repquote()" in each
+# patterns (especially pypats), before changing around repquote()
+_repquotefixedmap = {' ': ' ', '\n': '\n', '.': 'p', ':': 'q',
+                     '%': '%', '\\': 'b', '*': 'A', '+': 'P', '-': 'M'}
+def _repquoteencodechr(i):
+    if i > 255:
+        return 'u'
+    c = chr(i)
+    if c in _repquotefixedmap:
+        return _repquotefixedmap[c]
+    if c.isalpha():
+        return 'x'
+    if c.isdigit():
+        return 'n'
+    return 'o'
+_repquotett = ''.join(_repquoteencodechr(i) for i in xrange(256))
+
 def repquote(m):
-    # check "rules depending on implementation of repquote()" in each
-    # patterns (especially pypats), before changing this function
-    fixedmap = {' ': ' ', '\n': '\n', '.': 'p', ':': 'q',
-                '%': '%', '\\': 'b', '*': 'A', '+': 'P', '-': 'M'}
-    def encodechr(i):
-        if i > 255:
-            return 'u'
-        c = chr(i)
-        if c in fixedmap:
-            return fixedmap[c]
-        if c.isalpha():
-            return 'x'
-        if c.isdigit():
-            return 'n'
-        return 'o'
     t = m.group('text')
-    tt = ''.join(encodechr(i) for i in xrange(256))
-    t = t.translate(tt)
+    t = t.translate(_repquotett)
     return m.group('quote') + t + m.group('quote')
 
 def reppython(m):
diff -r 844f72885fb9 -r 2a54cf92c773 tests/test-contrib-check-code.t
--- a/tests/test-contrib-check-code.t	Tue Jun 21 00:50:39 2016 +0900
+++ b/tests/test-contrib-check-code.t	Tue Jun 21 00:50:39 2016 +0900
@@ -276,7 +276,11 @@
   >           ''' "%-6d \n 123456 .:*+-= foobar")
   > EOF
 
-  $ "$check_code" stringjoin.py
+(Checking multiple invalid files at once examines whether caching
+translation table for repquote() works as expected or not. All files
+should break rules depending on result of repquote(), in this case)
+
+  $ "$check_code" stringjoin.py uigettext.py
   stringjoin.py:1:
    > foo = (' foo'
    string join across lines with no space
@@ -301,9 +305,6 @@
   stringjoin.py:8:
    >        'bar foo-'
    string join across lines with no space
-  [1]
-
-  $ "$check_code" uigettext.py
   uigettext.py:1:
    > ui.status("% 10s %05d % -3.2f %*s %%"
    missing _() in ui message (use () to hide false-positives)