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121 lines
3.0 KiB
Python
121 lines
3.0 KiB
Python
#! /usr/bin/env python
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# encoding: utf-8
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# DC 2008
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# Thomas Nagy 2016-2018 (ita)
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import re
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INC_REGEX = r"""(?:^|['">]\s*;)\s*(?:|#\s*)INCLUDE\s+(?:\w+_)?[<"'](.+?)(?=["'>])"""
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USE_REGEX = r"""(?:^|;)\s*USE(?:\s+|(?:(?:\s*,\s*(?:NON_)?INTRINSIC)?\s*::))\s*(\w+)"""
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MOD_REGEX = r"""(?:^|;)\s*MODULE(?!\s+(?:PROCEDURE|SUBROUTINE|FUNCTION))\s+(\w+)"""
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SMD_REGEX = r"""(?:^|;)\s*SUBMODULE\s*\(([\w:]+)\)\s*(\w+)"""
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re_inc = re.compile(INC_REGEX, re.I)
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re_use = re.compile(USE_REGEX, re.I)
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re_mod = re.compile(MOD_REGEX, re.I)
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re_smd = re.compile(SMD_REGEX, re.I)
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class fortran_parser(object):
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"""
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This parser returns:
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* the nodes corresponding to the module names to produce
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* the nodes corresponding to the include files used
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* the module names used by the fortran files
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"""
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def __init__(self, incpaths):
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self.seen = []
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"""Files already parsed"""
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self.nodes = []
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"""List of :py:class:`waflib.Node.Node` representing the dependencies to return"""
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self.names = []
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"""List of module names to return"""
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self.incpaths = incpaths
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"""List of :py:class:`waflib.Node.Node` representing the include paths"""
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def find_deps(self, node):
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"""
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Parses a Fortran file to obtain the dependencies used/provided
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:param node: fortran file to read
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:type node: :py:class:`waflib.Node.Node`
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:return: lists representing the includes, the modules used, and the modules created by a fortran file
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:rtype: tuple of list of strings
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"""
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txt = node.read()
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incs = []
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uses = []
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mods = []
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for line in txt.splitlines():
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# line by line regexp search? optimize?
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m = re_inc.search(line)
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if m:
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incs.append(m.group(1))
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m = re_use.search(line)
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if m:
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uses.append(m.group(1))
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m = re_mod.search(line)
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if m:
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mods.append(m.group(1))
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m = re_smd.search(line)
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if m:
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uses.append(m.group(1))
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mods.append('{0}:{1}'.format(m.group(1),m.group(2)))
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return (incs, uses, mods)
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def start(self, node):
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"""
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Start parsing. Use the stack ``self.waiting`` to hold nodes to iterate on
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:param node: fortran file
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:type node: :py:class:`waflib.Node.Node`
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"""
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self.waiting = [node]
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while self.waiting:
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nd = self.waiting.pop(0)
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self.iter(nd)
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def iter(self, node):
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"""
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Processes a single file during dependency parsing. Extracts files used
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modules used and modules provided.
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"""
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incs, uses, mods = self.find_deps(node)
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for x in incs:
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if x in self.seen:
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continue
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self.seen.append(x)
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self.tryfind_header(x)
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for x in uses:
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name = "USE@%s" % x
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if not name in self.names:
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self.names.append(name)
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for x in mods:
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name = "MOD@%s" % x
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if not name in self.names:
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self.names.append(name)
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def tryfind_header(self, filename):
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"""
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Adds an include file to the list of nodes to process
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:param filename: file name
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:type filename: string
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"""
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found = None
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for n in self.incpaths:
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found = n.find_resource(filename)
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if found:
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self.nodes.append(found)
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self.waiting.append(found)
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break
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if not found:
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if not filename in self.names:
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self.names.append(filename)
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