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1#!/usr/bin/env python
2
3#===- cindex-dump.py - cindex/Python Source Dump -------------*- python -*--===#
4#
5# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
6# See https://llvm.org/LICENSE.txt for license information.
7# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8#
9#===------------------------------------------------------------------------===#
10
11"""
12A simple command line tool for dumping a source file using the Clang Index
13Library.
14"""
15
16def get_diag_info(diag):
17    return { 'severity' : diag.severity,
18             'location' : diag.location,
19             'spelling' : diag.spelling,
20             'ranges' : diag.ranges,
21             'fixits' : diag.fixits }
22
23def get_cursor_id(cursor, cursor_list = []):
24    if not opts.showIDs:
25        return None
26
27    if cursor is None:
28        return None
29
30    # FIXME: This is really slow. It would be nice if the index API exposed
31    # something that let us hash cursors.
32    for i,c in enumerate(cursor_list):
33        if cursor == c:
34            return i
35    cursor_list.append(cursor)
36    return len(cursor_list) - 1
37
38def get_info(node, depth=0):
39    if opts.maxDepth is not None and depth >= opts.maxDepth:
40        children = None
41    else:
42        children = [get_info(c, depth+1)
43                    for c in node.get_children()]
44    return { 'id' : get_cursor_id(node),
45             'kind' : node.kind,
46             'usr' : node.get_usr(),
47             'spelling' : node.spelling,
48             'location' : node.location,
49             'extent.start' : node.extent.start,
50             'extent.end' : node.extent.end,
51             'is_definition' : node.is_definition(),
52             'definition id' : get_cursor_id(node.get_definition()),
53             'children' : children }
54
55def main():
56    from clang.cindex import Index
57    from pprint import pprint
58
59    from optparse import OptionParser, OptionGroup
60
61    global opts
62
63    parser = OptionParser("usage: %prog [options] {filename} [clang-args*]")
64    parser.add_option("", "--show-ids", dest="showIDs",
65                      help="Compute cursor IDs (very slow)",
66                      action="store_true", default=False)
67    parser.add_option("", "--max-depth", dest="maxDepth",
68                      help="Limit cursor expansion to depth N",
69                      metavar="N", type=int, default=None)
70    parser.disable_interspersed_args()
71    (opts, args) = parser.parse_args()
72
73    if len(args) == 0:
74        parser.error('invalid number arguments')
75
76    index = Index.create()
77    tu = index.parse(None, args)
78    if not tu:
79        parser.error("unable to load input")
80
81    pprint(('diags', [get_diag_info(d) for d in  tu.diagnostics]))
82    pprint(('nodes', get_info(tu.cursor)))
83
84if __name__ == '__main__':
85    main()
86
87