slicc: tweak file enumeration for scons

Right now .cc and .hh files are handled separately, but then
they're just munged together at the end by scons, so it
doesn't buy us anything.  Might as well munge from the start
since we'll eventually be adding generated Python files
to the list too.

src/mem/protocol/SConscript

@@ -69,9 +69,7 @@ def slicc_emitter(target, source, env):
     for name in slicc.load(files, verbose=True):
         print "    %s" % name
 
-    hh,cc = slicc.files()
-    target.extend(sorted(hh))
-    target.extend(sorted(cc))
+    target.extend(sorted(slicc.files()))
     return target, source
 
 def slicc_action(target, source, env):

src/mem/slicc/ast/DeclAST.py

@@ -31,8 +31,8 @@ class DeclAST(AST):
     def __init__(self, slicc, pairs):
         super(DeclAST, self).__init__(slicc, pairs)
 
-    def files(self, hh, cc, parent=None):
-        pass
+    def files(self, parent=None):
+        return set()
 
     def findMachines(self):
         return

src/mem/slicc/ast/DeclListAST.py

@@ -38,9 +38,11 @@ class DeclListAST(AST):
     def __repr__(self):
         return "[DeclListAST: %s]" % (', '.join(repr(d) for d in self.decls))
 
-    def files(self, hh, cc, parent=None):
+    def files(self, parent=None):
+        s = set()
         for decl in self.decls:
-            decl.files(hh, cc, parent)
+            s |= decl.files(parent)
+        return s
 
     def generate(self):
         for decl in self.decls:

src/mem/slicc/ast/EnumDeclAST.py

@@ -38,16 +38,16 @@ class EnumDeclAST(DeclAST):
     def __repr__(self):
         return "[EnumDecl: %s]" % (self.type_ast)
 
-    def files(self, hh, cc, parent=None):
+    def files(self, parent=None):
         if "external" in self:
-            return
+            return set()
 
         if parent:
             ident = "%s_%s" % (parent, self.type_ast.ident)
         else:
             ident = self.type_ast.ident
-        hh.add("%s.hh" % ident)
-        cc.add("%s.cc" % ident)
+        s = set(("%s.hh" % ident, "%s.cc" % ident))
+        return s
 
     def generate(self):
         ident = str(self.type_ast)

src/mem/slicc/ast/FuncDeclAST.py

@@ -42,15 +42,15 @@ class FuncDeclAST(DeclAST):
     def __repr__(self):
         return "[FuncDecl: %s]" % self.ident
 
-    def files(self, hh, cc, parent=None):
+    def files(self, parent=None):
         if "external" in self or self.statements is None:
-            return
+            return set()
 
         if parent:
             ident = "%s_%s" % (parent, self.ident)
         else:
             ident = self.ident
-        cc.add("%s.cc" % ident)
+        return set(("%s.cc" % ident,))
 
     def generate(self):
         types = []

src/mem/slicc/ast/MachineAST.py

@@ -40,16 +40,16 @@ class MachineAST(DeclAST):
     def __repr__(self):
         return "[Machine: %r]" % self.ident
 
-    def files(self, hh, cc, parent=None):
-        hh.add('%s_Controller.hh' % self.ident)
-        hh.add('%s_Profiler.hh' % self.ident)
+    def files(self, parent=None):
+        s = set(('%s_Controller.cc' % self.ident,
+                 '%s_Controller.hh' % self.ident,
+                 '%s_Profiler.cc' % self.ident,
+                 '%s_Profiler.hh' % self.ident,
+                 '%s_Transitions.cc' % self.ident,
+                 '%s_Wakeup.cc' % self.ident))
 
-        cc.add('%s_Controller.cc' % self.ident)
-        cc.add('%s_Profiler.cc' % self.ident)
-        cc.add('%s_Transitions.cc' % self.ident)
-        cc.add('%s_Wakeup.cc' % self.ident)
-
-        self.decls.files(hh, cc, self.ident)
+        s |= self.decls.files(self.ident)
+        return s
 
     def generate(self):
         # Make a new frame

src/mem/slicc/ast/TypeDeclAST.py

@@ -38,16 +38,15 @@ class TypeDeclAST(DeclAST):
     def __repr__(self):
         return "[TypeDecl: %r]" % (self.type_ast)
 
-    def files(self, hh, cc, parent=None):
+    def files(self, parent=None):
         if "external" in self:
-            return
+            return set()
 
         if parent:
             ident = "%s_%s" % (parent, self.type_ast.ident)
         else:
             ident = self.type_ast.ident
-        hh.add("%s.hh" % ident)
-        cc.add("%s.cc" % ident)
+        return set(("%s.hh" % ident, "%s.cc" % ident))
 
     def generate(self):
         ident = str(self.type_ast)

src/mem/slicc/main.py

@@ -78,15 +78,7 @@ def main(args=None):
         output("    %s", filename)
 
     if opts.print_files:
-        hh, cc = slicc.files()
-        hh = sorted(hh)
-        cc = sorted(cc)
-        print 'Headers:'
-        for i in hh:
-            print '    %s' % i
-
-        print 'Sources:'
-        for i in cc:
+        for i in sorted(slicc.files()):
             print '    %s' % i
     else:
         output("Generator pass 1...")

src/mem/slicc/parser.py

@@ -114,19 +114,17 @@ class SLICC(Grammar):
         self.symtab.writeHTMLFiles(code_path)
 
     def files(self):
-        cc = set([
+        f = set([
             'ControllerFactory.cc',
-            'MachineType.cc'])
-
-        hh = set([
             'ControllerFactory.hh',
+            'MachineType.cc',
             'MachineType.hh',
             'Types.hh' ])
 
         for decl_list in self.decl_list_vec:
-            decl_list.files(hh, cc)
+            f |= decl_list.files()
 
-        return hh, cc
+        return f
 
     t_ignore = '\t '