source_line_info.py

#!/usr/bin/env python3
#
# Copyright (c) 2015-2016 The Khronos Group Inc.
# Copyright (c) 2015-2016 Valve Corporation
# Copyright (c) 2015-2016 LunarG, Inc.
# Copyright (c) 2015-2016 Google Inc.
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# The above copyright notice(s) and this permission notice shall be included
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# The Materials are Confidential Information as defined by the Khronos
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# Author: Tobin Ehlis <tobin@lunarg.com>

from inspect import currentframe, getframeinfo

# This is a wrapper class for inspect module that returns a formatted line
#  with details of the source file and line number of python code who called
#  into this class. The result can them be added to codegen to simplify
#  debug as it shows where code was generated from.
class sourcelineinfo():
    def __init__(self):
        self.general_prefix = "// CODEGEN : "
        self.file_prefix = "file "
        self.line_prefix = "line #"
        self.enabled = True

    def get(self):
        if self.enabled:
            frameinfo = getframeinfo(currentframe().f_back)
            return "%s%s%s %s%s" % (self.general_prefix, self.file_prefix, frameinfo.filename, self.line_prefix, frameinfo.lineno)
        return ""