From 64701d6a8ecfc3fcbe8d44282ad868eedf106937 Mon Sep 17 00:00:00 2001
From: fab <fabrice.leal.ch@gmail.com>
Date: Tue, 25 Dec 2018 19:03:26 +0000
Subject: avoid a pow call if we can

---
 lib/js/urweb.js | 47 +++++++++++++++++++++++++++++++----------------
 tests/driver.sh |  6 +++++-
 2 files changed, 36 insertions(+), 17 deletions(-)

diff --git a/lib/js/urweb.js b/lib/js/urweb.js
index 0182440e..0b482b07 100644
--- a/lib/js/urweb.js
+++ b/lib/js/urweb.js
@@ -229,11 +229,15 @@ var isLowerBitm = [
 	];
 
 function isLower(c) {
-	var cp = ord(c);
-	var idx = Math.floor(cp / 32);
-	var byt = isLowerBitm[idx];
+    var cp = ord(c);
+    var idx = Math.floor(cp / 32);
+    var byt = isLowerBitm[idx];
+    if (byt)
+    {
 	var mask = Math.pow(2, cp - idx * 32);
 	return (byt & mask) != 0;
+    }
+    return false;
 }
 
 var isUpperBitm = [
@@ -440,11 +444,14 @@ var isUpperBitm = [
 	];
 
 function isUpper(c) {
-	var cp = ord(c);
-	var idx = Math.floor(cp / 32);
-	var byt = isUpperBitm[idx];
+    var cp = ord(c);
+    var idx = Math.floor(cp / 32);
+    var byt = isUpperBitm[idx];
+    if (byt) {
 	var mask = Math.pow(2, cp - idx * 32);
 	return (byt & mask) != 0;
+    }
+    return false;
 }
 
 var isAlphaBitm = [
@@ -756,11 +763,14 @@ var isAlphaBitm = [
 	];
 
 function isAlpha(c) {
-	var cp = ord(c);
-	var idx = Math.floor(cp / 32);
-	var byt = isAlphaBitm[idx];
+    var cp = ord(c);
+    var idx = Math.floor(cp / 32);
+    var byt = isAlphaBitm[idx];
+    if (byt) {
 	var mask = Math.pow(2, cp - idx * 32);
 	return (byt & mask) != 0;
+    }
+    return false;
 }
 
 var isDigitBitm = [
@@ -963,11 +973,14 @@ var isDigitBitm = [
 	];
 
 function isDigit(c) {
-	var cp = ord(c);
-	var idx = Math.floor(cp / 32);
-	var byt = isDigitBitm[idx];
+    var cp = ord(c);
+    var idx = Math.floor(cp / 32);
+    var byt = isDigitBitm[idx];
+    if (byt) {
 	var mask = Math.pow(2, cp - idx * 32);
 	return (byt & mask) != 0;
+    }
+    return false;
 }
 
 function isAlnum(c) { return isAlpha(c) || isDigit(c); }
@@ -1316,14 +1329,16 @@ var isPrintBitm = [
 	];
 
 function isPrint(c) {
-	var cp = ord(c);
-	var idx = Math.floor(cp / 32);
-	var byt = isPrintBitm[idx];
+    var cp = ord(c);
+    var idx = Math.floor(cp / 32);
+    var byt = isPrintBitm[idx];
+    if (byt) {
 	var mask = Math.pow(2, cp - idx * 32);
 	return (byt & mask) != 0;
+    }
+    return false;
 }
 
-
 function toLower(c) {
     var cp = ord(c);
     
diff --git a/tests/driver.sh b/tests/driver.sh
index 879c093d..d20809d0 100755
--- a/tests/driver.sh
+++ b/tests/driver.sh
@@ -21,5 +21,9 @@ fi
 $TESTSRV -q -a 127.0.0.1 &
 echo $! >> $TESTPID
 sleep 1
-python3 -m unittest $1.py
+if [[ $# -eq 1 ]] ; then
+    python3 -m unittest $1.py
+else
+    python3 -m unittest $1.Suite.$2
+fi
 kill `cat $TESTPID`
-- 
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