Add prototype ccc rewrite.

 - Entry point is tools/ccc/xcc until we are a functional replacement
   for ccc.

This is highly experimental (FIXME/LOC ratio of 3.4%), quite crufty,
and barely usable (and then only on my specific Darwin). However, many
of the right ideas are present, and it already fixes a number of
things gcc gets wrong.

The major missing component is argument translation for tools
(translating driver arguments into cc1/ld/as/etc. arguments). This is
a large part of the driver functionality and will probably double the
LOC, but my hope is that the current architecture is relatively
stable.

Documentation & motivation to follow soon...


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@61739 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 52 insertions, 0 deletions

diff --git a/tools/ccc/ccclib/Util.py b/tools/ccc/ccclib/Util.py
new file mode 100644
index 0000000000..0924e8c248
--- /dev/null
+++ b/tools/ccc/ccclib/Util.py
@@ -0,0 +1,52 @@
+def any_true(list, predicate):
+    for i in list:
+        if predicate(i):
+            return True
+    return False
+
+def any_false(list, predicate):
+    return any_true(list, lambda x: not predicate(x))
+
+def all_true(list, predicate):
+    return not any_false(list, predicate)
+
+def all_false(list, predicate):
+    return not any_true(list, predicate)
+
+def prependLines(prependStr, str):
+    return ('\n'+prependStr).join(str.splitlines())
+
+def pprint(object, useRepr=True):
+    def recur(ob):
+        return pprint(ob, useRepr)
+    def wrapString(prefix, string, suffix):
+        return '%s%s%s' % (prefix, 
+                           prependLines(' ' * len(prefix),
+                                        string),
+                           suffix)
+    def pprintArgs(name, args):
+        return wrapString(name + '(', ',\n'.join(map(recur,args)), ')')
+                            
+    if isinstance(object, tuple):
+        return wrapString('(', ',\n'.join(map(recur,object)), 
+                          [')',',)'][len(object) == 1])
+    elif isinstance(object, list):
+        return wrapString('[', ',\n'.join(map(recur,object)), ']')
+    elif isinstance(object, set):
+        return pprintArgs('set', list(object))
+    elif isinstance(object, dict):
+        elts = []
+        for k,v in object.items():
+            kr = recur(k)
+            vr = recur(v)
+            elts.append('%s : %s' % (kr, 
+                                     prependLines(' ' * (3 + len(kr.splitlines()[-1])),
+                                                  vr)))
+        return wrapString('{', ',\n'.join(elts), '}')
+    else:
+        if useRepr:
+            return repr(object)
+        return str(object)
+
+def prefixAndPPrint(prefix, object, useRepr=True):
+    return prefix + prependLines(' '*len(prefix), pprint(object, useRepr))