First cut at include files.

bin/sixtypical

@@ -17,7 +17,7 @@ from tempfile import NamedTemporaryFile
 import traceback
 
 from sixtypical.symtab import SymbolTable
-from sixtypical.parser import Parser, merge_programs
+from sixtypical.parser import Parser, load_program, merge_programs
 from sixtypical.analyzer import Analyzer
 from sixtypical.callgraph import construct_callgraph, prune_unreachable_routines
 from sixtypical.outputter import outputter_class_for
@@ -30,11 +30,9 @@ def process_input_files(filenames, options):
     programs = []
 
     for filename in options.filenames:
-        text = open(filename).read()
-        parser = Parser(symtab, text, filename)
+        program = load_program(filename, symtab)
         if options.debug:
             print(symtab)
-        program = parser.program()
         programs.append(program)
 
     if options.parse_only:

src/sixtypical/parser.py

@@ -96,6 +96,12 @@ class Parser(object):
     def program(self):
         defns = []
         routines = []
+        includes = []
+        while self.scanner.consume('include'):
+            filename = self.scanner.token
+            self.scanner.scan()
+            program = load_program(filename, self.symtab)
+            includes.append(program)
         while self.scanner.on('typedef', 'const'):
             if self.scanner.on('typedef'):
                 self.typedef()
@@ -470,6 +476,13 @@ class Parser(object):
 # - - - -
 
 
+def load_program(filename, symtab):
+    text = open(filename).read()
+    parser = Parser(symtab, text, filename)
+    program = parser.program()
+    return program
+
+
 def merge_programs(programs):
     """Assumes that the programs do not have any conflicts."""