Add Glave XGL tracer and replayer tools
diff --git a/tools/glave/scripts/code_gen.py b/tools/glave/scripts/code_gen.py
new file mode 100644
index 0000000..6fa0c97
--- /dev/null
+++ b/tools/glave/scripts/code_gen.py
@@ -0,0 +1,827 @@
+import argparse
+import os
+import sys
+
+# code_gen.py overview
+# This script generates code based on input headers
+# Initially it's intended to support Mantle and XGL headers and
+#  generate wrappers functions that can be used to display
+#  structs in a human-readable txt format, as well as utility functions
+#  to print enum values as strings
+
+
+def handle_args():
+    parser = argparse.ArgumentParser(description='Perform analysis of vogl trace.')
+    parser.add_argument('input_file', help='The input header file from which code will be generated.')
+    parser.add_argument('--rel_out_dir', required=False, default='glave_gen', help='Path relative to exec path to write output files. Will be created if needed.')
+    parser.add_argument('--abs_out_dir', required=False, default=None, help='Absolute path to write output files. Will be created if needed.')
+    parser.add_argument('--gen_graphviz', required=False, action='store_true', default=False, help='Enable generation of graphviz dot file.')
+    #parser.add_argument('--test', action='store_true', default=False, help='Run simple test.')
+    return parser.parse_args()
+
+# TODO : Ideally these data structs would be opaque to user and could be wrapped
+#   in their own class(es) to make them friendly for data look-up
+# Dicts for Data storage
+# enum_val_dict[value_name] = dict keys are the string enum value names for all enums
+#    |-------->['type'] = the type of enum class into which the value falls
+#    |-------->['val'] = the value assigned to this particular value_name
+#    '-------->['unique'] = bool designating if this enum 'val' is unique within this enum 'type'
+enum_val_dict = {}
+# enum_type_dict['type'] = the type or class of of enum
+#  '----->['val_name1', 'val_name2'...] = each type references a list of val_names within this type
+enum_type_dict = {}
+# struct_dict['struct_basename'] = the base (non-typedef'd) name of the struct
+#  |->[<member_num>] = members are stored via their integer placement in the struct
+#  |    |->['name'] = string name of this struct member
+# ...   |->['full_type'] = complete type qualifier for this member
+#       |->['type'] = base type for this member
+#       |->['ptr'] = bool indicating if this member is ptr
+#       |->['const'] = bool indicating if this member is const
+#       |->['struct'] = bool indicating if this member is a struct type
+#       |->['array'] = bool indicating if this member is an array
+#       '->['array_size'] = int indicating size of array members (0 by default)
+struct_dict = {}
+# typedef_fwd_dict stores mapping from orig_type_name -> new_type_name
+typedef_fwd_dict = {}
+# typedef_rev_dict stores mapping from new_type_name -> orig_type_name
+typedef_rev_dict = {} # store new_name -> orig_name mapping
+# types_dict['id_name'] = identifier name will map to it's type
+#              '---->'type' = currently either 'struct' or 'enum'
+types_dict = {}   # store orig_name -> type mapping
+
+
+# Class that parses header file and generates data structures that can
+#  Then be used for other tasks
+class HeaderFileParser:
+    def __init__(self, header_file=None):
+        self.header_file = header_file
+        # store header data in various formats, see above for more info
+        self.enum_val_dict = {}
+        self.enum_type_dict = {}
+        self.struct_dict = {}
+        self.typedef_fwd_dict = {}
+        self.typedef_rev_dict = {}
+        self.types_dict = {}
+        
+    def setHeaderFile(self, header_file):
+        self.header_file = header_file
+
+    def get_enum_val_dict(self):
+        return self.enum_val_dict
+
+    def get_enum_type_dict(self):
+        return self.enum_type_dict
+
+    def get_struct_dict(self):
+        return self.struct_dict
+
+    def get_typedef_fwd_dict(self):
+        return self.typedef_fwd_dict
+
+    def get_typedef_rev_dict(self):
+        return self.typedef_rev_dict
+
+    def get_types_dict(self):
+        return self.types_dict
+
+    # Parse header file into data structures
+    def parse(self):
+        # parse through the file, identifying different sections
+        parse_enum = False
+        parse_struct = False
+        member_num = 0
+        # TODO : Comment parsing is very fragile but handles 2 known files
+        block_comment = False
+        with open(self.header_file) as f:
+            for line in f:
+                if block_comment:
+                    if '*/' in line:
+                        block_comment = False
+                    continue
+                if '/*' in line:
+                    block_comment = True
+                elif 0 == len(line.split()):
+                    #print("Skipping empty line")
+                    continue
+                elif line.split()[0].strip().startswith("//"):
+                    #print("Skipping commentted line %s" % line)
+                    continue
+                elif 'typedef enum' in line:
+                    (ty_txt, en_txt, base_type) = line.strip().split(None, 2)
+                    #print("Found ENUM type %s" % base_type)
+                    parse_enum = True
+                    self.types_dict[base_type] = 'enum'
+                elif 'typedef struct' in line:
+                    (ty_txt, st_txt, base_type) = line.strip().split(None, 2)
+                    #print("Found STRUCT type: %s" % base_type)
+                    parse_struct = True
+                    self.types_dict[base_type] = 'struct'
+                elif '}' in line and (parse_enum or parse_struct):
+                    if len(line.split()) > 1: # deals with embedded union in one struct
+                        parse_enum = False
+                        parse_struct = False
+                        member_num = 0
+                        # TODO : Can pull target of typedef here for remapping
+                        (cur_char, targ_type) = line.strip().split(None, 1)
+                        self.typedef_fwd_dict[base_type] = targ_type.strip(';')
+                        self.typedef_rev_dict[targ_type.strip(';')] = base_type
+                elif parse_enum:
+                    if '=' in line:
+                        self._add_enum(line, base_type)
+                elif parse_struct:
+                    if ';' in line:
+                        self._add_struct(line, base_type, member_num)
+                        member_num = member_num + 1
+                #elif '(' in line:
+                    #print("Function: %s" % line)
+    
+    # populate enum dicts based on enum lines
+    def _add_enum(self, line_txt, enum_type):    
+        #print("Parsing enum line %s" % line_txt)
+        (enum_name, eq_char, enum_val) = line_txt.split(None, 2)
+        if '=' != eq_char:
+            print("ERROR: Couldn't parse enum line: %s" % line_txt)
+        self.enum_val_dict[enum_name] = {}
+        self.enum_val_dict[enum_name]['type'] = enum_type
+        # strip comma and comment, then extra split in case of no comma w/ comments
+        enum_val = enum_val.strip().split(',', 1)[0]
+        self.enum_val_dict[enum_name]['val'] = enum_val.split()[0]
+        # TODO : Make this more robust, to verify if enum value is unique
+        #  Currently just try to cast to int which works ok but missed -(HEX) values
+        try:
+            #print("ENUM val:", self.enum_val_dict[enum_name]['val'])
+            int(self.enum_val_dict[enum_name]['val'], 0)
+            self.enum_val_dict[enum_name]['unique'] = True
+            #print("ENUM has num value")
+        except ValueError:
+            self.enum_val_dict[enum_name]['unique'] = False
+            #print("ENUM is not a number value")
+        # Update enum_type_dict as well
+        if not enum_type in self.enum_type_dict:
+            self.enum_type_dict[enum_type] = []
+        self.enum_type_dict[enum_type].append(enum_name)
+    
+    # populate struct dicts based on struct lines
+    # TODO : Handle ":" bitfield, "**" ptr->ptr and "const type*const*"
+    def _add_struct(self, line_txt, struct_type, num):
+        #print("Parsing struct line %s" % line_txt)
+        if not struct_type in self.struct_dict:
+            self.struct_dict[struct_type] = {}
+        members = line_txt.strip().split(';', 1)[0] # first strip semicolon & comments
+        # TODO : Handle bitfields more correctly
+        members = members.strip().split(':', 1)[0] # strip bitfield element
+        (member_type, member_name) = members.rsplit(None, 1)
+        self.struct_dict[struct_type][num] = {}
+        self.struct_dict[struct_type][num]['full_type'] = member_type
+        if '*' in member_type:
+            self.struct_dict[struct_type][num]['ptr'] = True
+            member_type = member_type.strip('*')
+        else:
+            self.struct_dict[struct_type][num]['ptr'] = False
+        if 'const' in member_type:
+            self.struct_dict[struct_type][num]['const'] = True
+            member_type = member_type.strip('const').strip()
+        else:
+            self.struct_dict[struct_type][num]['const'] = False
+        if is_type(member_type, 'struct'):
+            self.struct_dict[struct_type][num]['struct'] = True
+        else:
+            self.struct_dict[struct_type][num]['struct'] = False
+        self.struct_dict[struct_type][num]['type'] = member_type
+        if '[' in member_name:
+            (member_name, array_size) = member_name.split('[', 1)
+            self.struct_dict[struct_type][num]['array'] = True
+            self.struct_dict[struct_type][num]['array_size'] = array_size.strip(']')
+        else:
+            self.struct_dict[struct_type][num]['array'] = False
+            self.struct_dict[struct_type][num]['array_size'] = 0
+        self.struct_dict[struct_type][num]['name'] = member_name
+
+# check if given identifier if of specified type_to_check
+def is_type(identifier, type_to_check):
+    #print("Checking if %s is type %s" % (identifier, type_to_check))
+    if identifier in types_dict and type_to_check == types_dict[identifier]:
+        return True
+    if identifier in typedef_rev_dict:
+        new_id = typedef_rev_dict[identifier]
+        if new_id in types_dict and type_to_check == types_dict[new_id]:
+            return True
+    return False
+
+def recreate_structs():
+    for struct_name in struct_dict:
+        sys.stdout.write("typedef struct %s\n{\n" % struct_name)
+        for mem_num in sorted(struct_dict[struct_name]):
+            sys.stdout.write("    ")
+            if struct_dict[struct_name][mem_num]['const']:
+                sys.stdout.write("const ")
+            #if struct_dict[struct_name][mem_num]['struct']:
+            #    sys.stdout.write("struct ")
+            sys.stdout.write (struct_dict[struct_name][mem_num]['type'])
+            if struct_dict[struct_name][mem_num]['ptr']:
+                sys.stdout.write("*")
+            sys.stdout.write(" ")
+            sys.stdout.write(struct_dict[struct_name][mem_num]['name'])
+            if struct_dict[struct_name][mem_num]['array']:
+                sys.stdout.write("[")
+                sys.stdout.write(struct_dict[struct_name][mem_num]['array_size'])
+                sys.stdout.write("]")
+            sys.stdout.write(";\n")
+        sys.stdout.write("} ")
+        sys.stdout.write(typedef_fwd_dict[struct_name])
+        sys.stdout.write(";\n\n")
+
+# class for writing common file elements
+# Here's how this class lays out a file:
+#  COPYRIGHT
+#  HEADER
+#  BODY
+#  FOOTER
+#
+# For each of these sections, there's a "set*" function
+# The class as a whole has a generate function which will write each section in order
+class CommonFileGen:
+    def __init__(self, filename=None, copyright_txt="", header_txt="", body_txt="", footer_txt=""):
+        self.filename = filename
+        self.contents = {'copyright': copyright_txt, 'header': header_txt, 'body': body_txt, 'footer': footer_txt}
+        # TODO : Set a default copyright & footer at least
+    
+    def setFilename(self, filename):
+        self.filename = filename
+        
+    def setCopyright(self, c):
+        self.contents['copyright'] = c
+        
+    def setHeader(self, h):
+        self.contents['header'] = h
+        
+    def setBody(self, b):
+        self.contents['body'] = b
+        
+    def setFooter(self, f):
+        self.contents['footer'] = f
+        
+    def generate(self):
+        #print("Generate to file %s" % self.filename)
+        with open(self.filename, "w") as f:
+            f.write(self.contents['copyright'])
+            f.write(self.contents['header'])
+            f.write(self.contents['body'])
+            f.write(self.contents['footer'])
+
+# class for writing a wrapper class for structures
+# The wrapper class wraps the structs and includes utility functions for
+#  setting/getting member values and displaying the struct data in various formats
+class StructWrapperGen:
+    def __init__(self, in_struct_dict, prefix, out_dir):
+        self.struct_dict = in_struct_dict
+        self.include_headers = []
+        self.api = prefix
+        self.header_filename = os.path.join(out_dir, self.api+"_struct_wrappers.h")
+        self.class_filename = os.path.join(out_dir, self.api+"_struct_wrappers.cpp")
+        self.string_helper_filename = os.path.join(out_dir, self.api+"_struct_string_helper.h")
+        self.hfg = CommonFileGen(self.header_filename)
+        self.cfg = CommonFileGen(self.class_filename)
+        self.shg = CommonFileGen(self.string_helper_filename)
+        #print(self.header_filename)
+        self.header_txt = ""
+        self.definition_txt = ""
+        
+    def set_include_headers(self, include_headers):
+        self.include_headers = include_headers
+
+    # Return class name for given struct name
+    def get_class_name(self, struct_name):
+        class_name = struct_name.strip('_').lower() + "_struct_wrapper"
+        return class_name
+        
+    def get_file_list(self):
+        return [os.path.basename(self.header_filename), os.path.basename(self.class_filename), os.path.basename(self.string_helper_filename)]
+
+    # Generate class header file        
+    def generateHeader(self):
+        self.hfg.setCopyright(self._generateCopyright())
+        self.hfg.setHeader(self._generateHeader())
+        self.hfg.setBody(self._generateClassDeclaration())
+        self.hfg.setFooter(self._generateFooter())
+        self.hfg.generate()
+    
+    # Generate class definition
+    def generateBody(self):
+        self.cfg.setCopyright(self._generateCopyright())
+        self.cfg.setHeader(self._generateCppHeader())
+        self.cfg.setBody(self._generateClassDefinition())
+        self.cfg.setFooter(self._generateFooter())
+        self.cfg.generate()
+
+    # Generate c-style .h file that contains functions for printing structs
+    def generateStringHelper(self):
+        print("Generating struct string helper")
+        self.shg.setCopyright(self._generateCopyright())
+        self.shg.setHeader(self._generateHeader())
+        self.shg.setBody(self._generateStringHelperFunctions())
+        self.shg.generate()
+
+    def _generateCopyright(self):
+        return "//This is the copyright\n"
+
+    def _generateCppHeader(self):
+        header = []
+        header.append("//#includes, #defines, globals and such...\n")
+        header.append("#include <stdio.h>\n#include <%s>\n#include <%s_string_helper.h>\n" % (os.path.basename(self.header_filename), self.api))
+        return "".join(header)
+        
+    def _generateClassDefinition(self):
+        class_def = []
+        if 'xgl' == self.api: # Mantle doesn't have pNext to worry about
+            class_def.append(self._generateDynamicPrintFunctions())
+        for s in self.struct_dict:
+            class_def.append("\n// %s class definition" % self.get_class_name(s))
+            class_def.append(self._generateConstructorDefinitions(s))
+            class_def.append(self._generateDestructorDefinitions(s))
+            class_def.append(self._generateDisplayDefinitions(s))
+        return "\n".join(class_def)
+        
+    def _generateConstructorDefinitions(self, s):
+        con_defs = []
+        con_defs.append("%s::%s() : m_struct(), m_indent(0), m_dummy_prefix('\\0'), m_origStructAddr(NULL) {}" % (self.get_class_name(s), self.get_class_name(s)))
+        # TODO : This is a shallow copy of ptrs
+        con_defs.append("%s::%s(%s* pInStruct) : m_indent(0), m_dummy_prefix('\\0')\n{\n    m_struct = *pInStruct;\n    m_origStructAddr = pInStruct;\n}" % (self.get_class_name(s), self.get_class_name(s), typedef_fwd_dict[s]))
+        con_defs.append("%s::%s(const %s* pInStruct) : m_indent(0), m_dummy_prefix('\\0')\n{\n    m_struct = *pInStruct;\n    m_origStructAddr = pInStruct;\n}" % (self.get_class_name(s), self.get_class_name(s), typedef_fwd_dict[s]))
+        return "\n".join(con_defs)
+        
+    def _generateDestructorDefinitions(self, s):
+        return "%s::~%s() {}" % (self.get_class_name(s), self.get_class_name(s))
+        
+    def _generateDynamicPrintFunctions(self):
+        dp_funcs = []
+        dp_funcs.append("\nvoid dynamic_display_full_txt(const XGL_VOID* pStruct, uint32_t indent)\n{\n    // Cast to APP_INFO ptr initially just to pull sType off struct")
+        dp_funcs.append("    XGL_STRUCTURE_TYPE sType = ((XGL_APPLICATION_INFO*)pStruct)->sType;    switch (sType)\n    {")
+        for e in enum_type_dict:
+            class_num = 0
+            if "_STRUCTURE_TYPE" in e:
+                for v in sorted(enum_type_dict[e]):
+                    struct_name = v.replace("_STRUCTURE_TYPE", "")
+                    class_name = self.get_class_name(struct_name)
+                    # TODO : Hand-coded fixes for some exceptions
+                    if 'XGL_PIPELINE_CB_STATE_CREATE_INFO' in struct_name:
+                        struct_name = 'XGL_PIPELINE_CB_STATE'
+                    elif 'XGL_SEMAPHORE_CREATE_INFO' in struct_name:
+                        struct_name = 'XGL_QUEUE_SEMAPHORE_CREATE_INFO'
+                        class_name = self.get_class_name(struct_name)
+                    elif 'XGL_SEMAPHORE_OPEN_INFO' in struct_name:
+                        struct_name = 'XGL_QUEUE_SEMAPHORE_OPEN_INFO'
+                        class_name = self.get_class_name(struct_name)
+                    instance_name = "swc%i" % class_num
+                    dp_funcs.append("        case %s:\n        {" % (v))
+                    dp_funcs.append("            %s %s((%s*)pStruct);" % (class_name, instance_name, struct_name))
+                    dp_funcs.append("            %s.set_indent(indent);" % (instance_name))
+                    dp_funcs.append("            %s.display_full_txt();" % (instance_name))
+                    dp_funcs.append("        }")
+                    dp_funcs.append("        break;")
+                    class_num += 1
+                dp_funcs.append("    }")
+        dp_funcs.append("}\n")
+        return "\n".join(dp_funcs)
+
+    def _get_sh_func_name(self, struct):
+        return "%s_print_%s" % (self.api, struct.lower().strip("_"))
+
+    # Return elements to create formatted string for given struct member
+    def _get_struct_print_formatted(self, struct_member, pre_var_name="prefix", postfix = "\\n", struct_var_name="pStruct", struct_ptr=True, print_array=False):
+        struct_op = "->"
+        if not struct_ptr:
+            struct_op = "."
+        member_name = struct_member['name']
+        print_type = "p"
+        cast_type = ""
+        member_post = ""
+        array_index = ""
+        member_print_post = ""
+        if struct_member['array'] and 'CHAR' in struct_member['type']: # just print char array as string
+            print_type = "s"
+            print_array = False
+        elif struct_member['array'] and not print_array:
+            # Just print base address of array when not full print_array
+            cast_type = "(void*)"
+        elif is_type(struct_member['type'], 'enum'):
+            cast_type = "string_%s" % struct_member['type']
+            print_type = "s"
+        elif is_type(struct_member['type'], 'struct'): # print struct address for now
+            cast_type = "(void*)"
+            if not struct_member['ptr']:
+                cast_type = "(void*)&"
+        elif 'BOOL' in struct_member['type']:
+            print_type = "s"
+            member_post = ' ? "TRUE" : "FALSE"'
+        elif 'FLOAT' in struct_member['type']:
+            print_type = "f"
+        elif 'UINT64' in struct_member['type']:
+            print_type = "lu"
+        elif 'UINT8' in struct_member['type']:
+            print_type = "hu"
+        elif True in [ui_str in struct_member['type'] for ui_str in ['UINT', '_SIZE', '_FLAGS', '_SAMPLE_MASK']]:
+            print_type = "u"
+        elif 'INT' in struct_member['type']:
+            print_type = "i"
+        elif struct_member['ptr']:
+            #cast_type = ""
+            pass
+        else:
+            #print("Unhandled struct type: %s" % struct_member['type'])
+            cast_type = "(void*)"
+        if print_array and struct_member['array']:
+            member_print_post = "[%u]"
+            array_index = " i,"
+            member_post = "[i]"
+        print_out = "%%s%s%s = %%%s%s" % (member_name, member_print_post, print_type, postfix) # section of print that goes inside of quotes
+        print_arg = ", %s,%s %s(%s%s%s)%s" % (pre_var_name, array_index, cast_type, struct_var_name, struct_op, member_name, member_post) # section of print passed to portion in quotes
+        return (print_out, print_arg)
+
+    def _generateStringHelperFunctions(self):
+        sh_funcs = []
+        # TODO : Need a nice way to unify all of the different struct type print formatting code
+        for s in self.struct_dict:
+            p_out = ""
+            p_args = ""
+            sh_funcs.append('char* %s(const %s* pStruct, const char* prefix)\n{\n    char* str;\n    str = (char*)malloc(sizeof(char)*1024);\n    sprintf(str, "' % (self._get_sh_func_name(s), typedef_fwd_dict[s]))
+            for m in sorted(self.struct_dict[s]):
+                (p_out1, p_args1) = self._get_struct_print_formatted(self.struct_dict[s][m])
+                p_out += p_out1
+                p_args += p_args1
+            p_out += '"'
+            p_args += ");\n    return str;\n}\n"
+            sh_funcs.append(p_out)
+            sh_funcs.append(p_args)
+        return "".join(sh_funcs)
+                
+        
+    def _genStructMemberPrint(self, member, s, array, struct_array):
+        (p_out, p_arg) = self._get_struct_print_formatted(self.struct_dict[s][member], pre_var_name="&m_dummy_prefix", struct_var_name="m_struct", struct_ptr=False, print_array=True)
+        extra_indent = ""
+        if array:
+            extra_indent = "    "
+        if is_type(self.struct_dict[s][member]['type'], 'struct'): # print struct address for now
+            struct_array.insert(0, self.struct_dict[s][member])
+        elif self.struct_dict[s][member]['ptr']:
+            # Special case for VOID* named "pNext"
+            if "VOID" in self.struct_dict[s][member]['type'] and "pNext" == self.struct_dict[s][member]['name']:
+                struct_array.insert(0, self.struct_dict[s][member])
+        return ('    %sprintf("%%*s    %s", m_indent, ""%s);' % (extra_indent, p_out, p_arg), struct_array)
+
+    def _generateDisplayDefinitions(self, s):
+        disp_def = []
+        struct_array = []
+        # Single-line struct print function
+        disp_def.append("// Output 'structname = struct_address' on a single line")
+        disp_def.append("void %s::display_single_txt()\n{" % self.get_class_name(s))
+        disp_def.append('    printf(" %%*s%s = %%p", m_indent, "", (void*)m_origStructAddr);' % typedef_fwd_dict[s])
+        disp_def.append("}\n")
+        # Private helper function to print struct members
+        disp_def.append("// Private helper function that displays the members of the wrapped struct")
+        disp_def.append("void %s::display_struct_members()\n{" % self.get_class_name(s))
+        i_declared = False
+        for member in sorted(self.struct_dict[s]):
+            # TODO : Need to display each member based on its type
+            # TODO : Need to handle pNext which are structs, but of XGL_VOID* type
+            #   Can grab struct type off of header of struct pointed to
+            # TODO : Handle Arrays
+            if self.struct_dict[s][member]['array']:
+                # Create for loop to print each element of array
+                if not i_declared:
+                    disp_def.append('    uint32_t i;')
+                    i_declared = True
+                disp_def.append('    for (i = 0; i<%s; i++) {' % self.struct_dict[s][member]['array_size'])
+                (return_str, struct_array) = self._genStructMemberPrint(member, s, True, struct_array)
+                disp_def.append(return_str)
+                disp_def.append('    }')
+            else:
+                (return_str, struct_array) = self._genStructMemberPrint(member, s, False, struct_array)
+                disp_def.append(return_str)
+        disp_def.append("}\n")
+        i_declared = False
+        # Basic print function to display struct members
+        disp_def.append("// Output all struct elements, each on their own line")
+        disp_def.append("void %s::display_txt()\n{" % self.get_class_name(s))
+        disp_def.append('    printf("%%*s%s struct contents at %%p:\\n", m_indent, "", (void*)m_origStructAddr);' % typedef_fwd_dict[s])
+        disp_def.append('    this->display_struct_members();')
+        disp_def.append("}\n")
+        # Advanced print function to display current struct and contents of any pointed-to structs
+        disp_def.append("// Output all struct elements, and for any structs pointed to, print complete contents")
+        disp_def.append("void %s::display_full_txt()\n{" % self.get_class_name(s))
+        disp_def.append('    printf("%%*s%s struct contents at %%p:\\n", m_indent, "", (void*)m_origStructAddr);' % typedef_fwd_dict[s])
+        disp_def.append('    this->display_struct_members();')
+        class_num = 0
+        # TODO : Need to handle arrays of structs here
+        for ms in struct_array:
+            swc_name = "class%s" % str(class_num)
+            if ms['array']:
+                if not i_declared:
+                    disp_def.append('    uint32_t i;')
+                    i_declared = True
+                disp_def.append('    for (i = 0; i<%s; i++) {' % ms['array_size'])
+                #disp_def.append("        if (m_struct.%s[i]) {" % (ms['name']))
+                disp_def.append("            %s %s(&(m_struct.%s[i]));" % (self.get_class_name(ms['type']), swc_name, ms['name']))
+                disp_def.append("            %s.set_indent(m_indent + 4);" % (swc_name))
+                disp_def.append("            %s.display_full_txt();" % (swc_name))
+                #disp_def.append('        }')
+                disp_def.append('    }')
+            elif 'pNext' == ms['name']:
+                # Need some code trickery here
+                #  I'm thinking have a generated function that takes pNext ptr value
+                #  then it checks sType and in large switch statement creates appropriate
+                #  wrapper class type and then prints contents
+                disp_def.append("    if (m_struct.%s) {" % (ms['name']))
+                #disp_def.append('        printf("%*s    This is where we would call dynamic print function\\n", m_indent, "");')
+                disp_def.append('        dynamic_display_full_txt(m_struct.%s, m_indent);' % (ms['name']))
+                disp_def.append("    }")
+            else:
+                if ms['ptr']:
+                    disp_def.append("    if (m_struct.%s) {" % (ms['name']))
+                    disp_def.append("        %s %s(m_struct.%s);" % (self.get_class_name(ms['type']), swc_name, ms['name']))
+                else:
+                    disp_def.append("    if (&m_struct.%s) {" % (ms['name']))
+                    disp_def.append("        %s %s(&m_struct.%s);" % (self.get_class_name(ms['type']), swc_name, ms['name']))
+                disp_def.append("        %s.set_indent(m_indent + 4);" % (swc_name))
+                disp_def.append("        %s.display_full_txt();\n    }" % (swc_name))
+            class_num += 1
+        disp_def.append("}\n")
+        return "\n".join(disp_def)
+        
+    def _generateHeader(self):
+        header = []
+        header.append("//#includes, #defines, globals and such...\n")
+        for f in self.include_headers:
+            header.append("#include <%s>\n" % f)
+        return "".join(header)
+    
+    # Declarations
+    def _generateConstructorDeclarations(self, s):
+        constructors = []
+        constructors.append("    %s();\n" % self.get_class_name(s))
+        constructors.append("    %s(%s* pInStruct);\n" % (self.get_class_name(s), typedef_fwd_dict[s]))
+        constructors.append("    %s(const %s* pInStruct);\n" % (self.get_class_name(s), typedef_fwd_dict[s]))
+        return "".join(constructors)
+    
+    def _generateDestructorDeclarations(self, s):
+        return "    virtual ~%s();\n" % self.get_class_name(s)
+        
+    def _generateDisplayDeclarations(self, s):
+        return "    void display_txt();\n    void display_single_txt();\n    void display_full_txt();\n"
+        
+    def _generateGetSetDeclarations(self, s):
+        get_set = []
+        get_set.append("    void set_indent(uint32_t indent) { m_indent = indent; }\n")
+        for member in sorted(self.struct_dict[s]):
+            # TODO : Skipping array set/get funcs for now
+            if self.struct_dict[s][member]['array']:
+                continue
+            get_set.append("    %s get_%s() { return m_struct.%s; }\n" % (self.struct_dict[s][member]['full_type'], self.struct_dict[s][member]['name'], self.struct_dict[s][member]['name']))
+            if not self.struct_dict[s][member]['const']:
+                get_set.append("    void set_%s(%s inValue) { m_struct.%s = inValue; }\n" % (self.struct_dict[s][member]['name'], self.struct_dict[s][member]['full_type'], self.struct_dict[s][member]['name']))
+        return "".join(get_set)
+    
+    def _generatePrivateMembers(self, s):
+        priv = []
+        priv.append("\nprivate:\n")
+        priv.append("    %s m_struct;\n" % typedef_fwd_dict[s])
+        priv.append("    const %s* m_origStructAddr;\n" % typedef_fwd_dict[s])
+        priv.append("    uint32_t m_indent;\n")
+        priv.append("    const char m_dummy_prefix;\n")
+        priv.append("    void display_struct_members();\n")
+        return "".join(priv)
+    
+    def _generateClassDeclaration(self):
+        class_decl = []
+        for s in self.struct_dict:
+            class_decl.append("\n//class declaration")
+            class_decl.append("class %s\n{\npublic:" % self.get_class_name(s))
+            class_decl.append(self._generateConstructorDeclarations(s))
+            class_decl.append(self._generateDestructorDeclarations(s))
+            class_decl.append(self._generateDisplayDeclarations(s))
+            class_decl.append(self._generateGetSetDeclarations(s))
+            class_decl.append(self._generatePrivateMembers(s))
+            class_decl.append("};\n")
+        return "\n".join(class_decl)
+        
+    def _generateFooter(self):
+        return "\n//any footer info for class\n"
+
+class EnumCodeGen:
+    def __init__(self, enum_type_dict=None, enum_val_dict=None, typedef_fwd_dict=None, in_file=None, out_file=None):
+        self.et_dict = enum_type_dict
+        self.ev_dict = enum_val_dict
+        self.tf_dict = typedef_fwd_dict
+        self.in_file = in_file
+        self.out_file = out_file
+        self.efg = CommonFileGen(self.out_file)
+        
+    def generateStringHelper(self):
+        self.efg.setHeader(self._generateSHHeader())
+        self.efg.setBody(self._generateSHBody())
+        self.efg.generate()
+    
+    def _generateSHBody(self):
+        body = []
+#        with open(self.out_file, "a") as hf:
+            # bet == base_enum_type, fet == final_enum_type
+        for bet in self.et_dict:
+            fet = self.tf_dict[bet]
+            body.append("static const char* string_%s(%s input_value)\n{\n    switch ((%s)input_value)\n    {\n" % (fet, fet, fet))
+            for e in sorted(self.et_dict[bet]):
+                if (self.ev_dict[e]['unique']):
+                    body.append('    case %s:\n        return "%s";\n' % (e, e))
+            body.append('    }\n    return "Unhandled %s";\n}\n\n' % fet)
+        return "\n".join(body)
+    
+    def _generateSHHeader(self):
+        return "#pragma once\n\n#include <%s>\n\n" % self.in_file
+        
+
+class CMakeGen:
+    def __init__(self, struct_wrapper=None, out_dir=None):
+        self.sw = struct_wrapper
+        self.add_lib_file_list = self.sw.get_file_list()
+        self.out_dir = out_dir
+        self.out_file = os.path.join(self.out_dir, "CMakeLists.txt")
+        self.cmg = CommonFileGen(self.out_file)
+        
+    def generate(self):
+        self.cmg.setBody(self._generateBody())
+        self.cmg.generate()
+        
+    def _generateBody(self):
+        body = []
+        body.append("project(%s)" % os.path.basename(self.out_dir))
+        body.append("cmake_minimum_required(VERSION 2.8)\n")
+        body.append("add_library(${PROJECT_NAME} %s)\n" % " ".join(self.add_lib_file_list))
+        body.append('set(COMPILE_FLAGS "-fpermissive")')
+        body.append('set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMPILE_FLAGS}")\n')
+        body.append("include_directories(${SRC_DIR}/thirdparty/${GEN_API}/inc/)\n")
+        body.append("target_include_directories (%s PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})\n" % os.path.basename(self.out_dir))
+        return "\n".join(body)
+
+class GraphVizGen:
+    def __init__(self, struct_dict=None):
+        self.struc_dict = struct_dict
+        self.out_file = os.path.join(os.getcwd(), "struct_gv.dot")
+        self.gvg = CommonFileGen(self.out_file)
+        
+    def generate(self):
+        self.gvg.setHeader(self._generateHeader())
+        self.gvg.setBody(self._generateBody())
+        self.gvg.setFooter('}')
+        self.gvg.generate()
+        
+    def _generateHeader(self):
+        hdr = []
+        hdr.append('digraph g {\ngraph [\nrankdir = "LR"\n];')
+        hdr.append('node [\nfontsize = "16"\nshape = "plaintext"\n];')
+        hdr.append('edge [\n];\n')
+        return "\n".join(hdr)
+        
+    def _generateBody(self):
+        body = []
+        for s in self.struc_dict:
+            field_num = 1
+            body.append('"%s" [\nlabel = <<TABLE BORDER="0" CELLBORDER="1" CELLSPACING="0"> <TR><TD COLSPAN="2" PORT="f0">%s</TD></TR>' % (s, typedef_fwd_dict[s]))
+            for m in sorted(self.struc_dict[s]):
+                body.append('<TR><TD PORT="f%i">%s</TD><TD PORT="f%i">%s</TD></TR>' % (field_num, self.struc_dict[s][m]['full_type'], field_num+1, self.struc_dict[s][m]['name']))
+                field_num += 2
+            body.append('</TABLE>>\n];\n')
+        return "".join(body)
+                
+
+def main(argv=None):
+    opts = handle_args()
+    # Parse input file and fill out global dicts
+    hfp = HeaderFileParser(opts.input_file)
+    hfp.parse()
+    # TODO : Don't want these to be global, see note at top about wrapper classes
+    global enum_val_dict
+    global enum_type_dict
+    global struct_dict
+    global typedef_fwd_dict
+    global typedef_rev_dict
+    global types_dict
+    enum_val_dict = hfp.get_enum_val_dict()
+    enum_type_dict = hfp.get_enum_type_dict()
+    struct_dict = hfp.get_struct_dict()
+    typedef_fwd_dict = hfp.get_typedef_fwd_dict()
+    typedef_rev_dict = hfp.get_typedef_rev_dict()
+    types_dict = hfp.get_types_dict()
+    #print(enum_val_dict)
+    #print(typedef_dict)
+    #print(struct_dict)
+    if (opts.abs_out_dir is not None):
+        enum_filename = os.path.join(opts.abs_out_dir, os.path.basename(opts.input_file).strip(".h")+"_string_helper.h")
+    else:
+        enum_filename = os.path.join(os.getcwd(), opts.rel_out_dir, os.path.basename(opts.input_file).strip(".h")+"_string_helper.h")
+    enum_filename = os.path.abspath(enum_filename)
+    if not os.path.exists(os.path.dirname(enum_filename)):
+        print("Creating output dir %s" % os.path.dirname(enum_filename))
+        os.mkdir(os.path.dirname(enum_filename))
+    print("Generating enum string helper to %s" % enum_filename)
+    eg = EnumCodeGen(enum_type_dict, enum_val_dict, typedef_fwd_dict, os.path.basename(opts.input_file), enum_filename)
+    eg.generateStringHelper()
+    #for struct in struct_dict:
+    #print(struct)
+    sw = StructWrapperGen(struct_dict, os.path.basename(opts.input_file).strip(".h"), os.path.dirname(enum_filename))
+    #print(sw.get_class_name(struct))
+    sw.set_include_headers([os.path.basename(opts.input_file),os.path.basename(enum_filename),"stdint.h","stdio.h","stdlib.h"])
+    print("Generating struct wrapper header to %s" % sw.header_filename)
+    sw.generateHeader()
+    print("Generating struct wrapper class to %s" % sw.class_filename)
+    sw.generateBody()
+    sw.generateStringHelper()
+    cmg = CMakeGen(sw, os.path.dirname(enum_filename))
+    cmg.generate()
+    print("DONE! Check out the file, but we're still early so assume something's probably not quite right. :)")
+    gv = GraphVizGen(struct_dict)
+    gv.generate()
+    #print(typedef_rev_dict)
+    #print(types_dict)
+    #recreate_structs()
+
+if __name__ == "__main__":
+    sys.exit(main())
+    
+    
+## Example class for GR_APPLICATION_INFO struct
+##include <mantle.h>    
+#    
+#class gr_application_info_struct_wrapper {
+#public:
+#    // Constructors
+#    gr_application_info_struct_wrapper();
+#    gr_application_info_struct_wrapper(GR_APPLICATION_INFO* pInStruct);
+#    // Destructor
+#    virtual ~gr_application_info_struct_wrapper();
+#    
+#    void display_txt()
+#    // get functions    
+#    // set functions for every non-const struct member
+#        
+#private:
+#    GR_APPLICATION_INFO m_struct;
+#};
+#
+#gr_application_info_struct_wrapper::gr_application_info_struct_wrapper() : m_struct() {}
+#
+#// Output struct address on single line
+#gr_application_info_struct_wrapper::display_single_txt()
+#{
+#    printf(" GR_APPLICATION_INFO = %p", &m_struct);
+#}
+#// Output struct in txt format
+#gr_application_info_struct_wrapper::display_txt()
+#{
+#    printf("GR_APPLICATION_INFO struct contents:\n");
+#    printf("    pAppName: %s\n", m_struct.pAppName);
+#    printf("    appVersion: %i\n", m_struct.appVersion);
+#    printf("    pEngineNmae: %s\n", m_struct.pEngineName);
+#    printf("    engineVersion: %i\n", m_struct.engineVersion);
+#    printf("    apiVersion: %i\n", m_struct.apiVersion);
+#}
+#// Output struct including detailed info on pointed-to structs
+#gr_application_info_struct_wrapper::display_full_txt()
+#{
+#    
+#    printf("%*s%GR_APPLICATION_INFO struct contents:\n", indent, "");
+#    printf("    pAppName: %s\n", m_struct.pAppName);
+#    printf("    appVersion: %i\n", m_struct.appVersion);
+#    printf("    pEngineNmae: %s\n", m_struct.pEngineName);
+#    printf("    engineVersion: %i\n", m_struct.engineVersion);
+#    printf("    apiVersion: %i\n", m_struct.apiVersion);
+#}
+
+
+# Example of helper function to pretty-print enum info
+#static const char* string_GR_RESULT_CODE(GR_RESULT result)
+#{
+#    switch ((GR_RESULT_CODE)result)
+#    {
+#    // Return codes for successful operation execution
+#    case GR_SUCCESS:
+#        return "GR_SUCCESS";
+#    case GR_UNSUPPORTED:
+#        return "GR_UNSUPPORTED";
+#    case GR_NOT_READY:
+#        return "GR_NOT_READY";
+#    case GR_TIMEOUT:
+#        return "GR_TIMEOUT";
+#    }
+#    return "Unhandled GR_RESULT_CODE";
+#}
+
+# Dynamic print function
+# void dynamic_display_full_txt(XGL_STRUCTURE_TYPE sType, void* pStruct, uint32_t indent)
+# {
+#     switch (sType)
+#     {
+#         case XGL_STRUCTURE_TYPE_COLOR_BLEND_STATE_CREATE_INFO:
+#             xgl_color_blend_state_create_info_struct_wrapper swc((XGL_COLOR_BLEND_STATE_CREATE_INFO*)pStruct);
+#             swc.set_indent(indent);
+#             swc.display_full_txt();
+#     }
+# }