Reduce the call count to eval. This reduce by 3 the time of fast(q|a)

header processing

python/obitools3/parsers/header.pyx

@@ -9,12 +9,37 @@ Created on 25 mars 2016
 import re
 
 __ret__         = re.compile('''(([^ ]+)=('[^']*'|"[^"]*"|[^;]+); *)+?''')
-
+__re_int__      = re.compile("^[+-]?[0-9]+$")
+__re_float__    = re.compile("^[+-]?[0-9]+(\.[0-9]*)?([eE][+-]?[0-9]+)?$")
+__re_str__      = re.compile("""^"[^"]*"|'[^']*'$""")
+__re_dict__     = re.compile("""^\{\ *
+                                   (
+                                       ("[^"]*"|'[^']*')
+                                        \ *:\ *
+                                       ([^,}]+|
+                                        "[^"]*"|
+                                        '[^']*'
+                                       )
+                                   )?
+                                   (\ *,\ *
+                                       ("[^"]*"|'[^']*')
+                                        \ *:\ *
+                                       ([^,}]+|
+                                        "[^"]*"|
+                                        '[^']*'
+                                       )
+                                    )*\ *\}$""", re.VERBOSE)
 cdef object __etag__(str x):
-    try:
-        v = eval(x,{},{})
-    except:
-        v = x
+    if __re_int__.match(x):
+        v=int(x)
+    elif __re_float__.match(x):
+        v=float(x)
+    elif __re_str__.match(x):
+        v=x[1:-1]
+    elif __re_dict__.match(x):
+        v=eval(x)
+    else:
+        v=x
     return v
 
 cpdef tuple parseHeader(str header):