interpreter: Reduce to_sring method to base 10

The int's to_string method implementation has been reduced to base
10.

mesonbuild/interpreterbase.py

@@ -452,13 +452,8 @@ class InterpreterBase:
         elif method_name == 'to_string':
             if not posargs:
                 return str(obj)
-            elif len(posargs) == 1 and isinstance(posargs[0], str):
-                f = 'd' if len(posargs[0].strip()) == 0 else posargs[0]
-                if re.match('^[bcdoxX]$', f) is None:
-                    raise InvalidCode('Invalid format for int to string conversion "%s"' % f)
-                return str(('{:' + f + '}').format(obj))
             else:
-                raise InterpreterException('int.to_string() must have either no arguments or exactly one string arguments that signify what format to use.')
+                raise InterpreterException('int.to_string() must have no arguments.')
         else:
             raise InterpreterException('Unknown method "%s" for an integer.' % method_name)
 

test cases/common/165 int formatting/meson.build

@@ -1,15 +0,0 @@
-project('int formatting', 'c')
-
-values = [
-  ['', '74'],
-  ['c', 'J'],
-  ['b', '1001010'],
-  ['d', '74'],
-  ['o', '112'],
-  ['x', '4a'],
-  ['X', '4A']
-]
-
-foreach value: values
-  assert(74.to_string(value[0]) == value[1], 'conversion is broken')
-endforeach