On Sat, 19 Jan 2019, Bruno Santos <brunomanuelsantos@xxxxxxxxxxxxxxxxxx> wrote:
This patch's ultimate goal is to have a recursive parser to walk the
cursor graph. Right now, in spite of the name of the new function, this
promise is yet to be accomplished. In fact, this patch does not change
behaviour at all. It does provide some ground work to achieve that goal
though.
---
hawkmoth/hawkmoth.py | 273 ++++++++++++++++++++++---------------------
1 file changed, 140 insertions(+), 133 deletions(-)
diff --git a/hawkmoth/hawkmoth.py b/hawkmoth/hawkmoth.py
index 7b610dd..5b8e79a 100755
--- a/hawkmoth/hawkmoth.py
+++ b/hawkmoth/hawkmoth.py
@@ -90,6 +90,26 @@ def comment_extract(tu):
return top_level_comments, comments
+def _result(comment, cursor=None, fmt=docstr.Type.TEXT, nest=0,
+ name=None, ttype=None, args=None, compat=None):
+
+ # FIXME: docstr.generate changes the number of lines in output. This
impacts
+ # the error reporting via meta['line']. Adjust meta to take this into
+ # account.
+
+ doc = docstr.generate(text=comment.spelling, fmt=fmt,
+ name=name, ttype=ttype, args=args,
transform=compat)
+
+ doc = docstr.nest(doc, nest)
+
+ meta = {'line': comment.extent.start.line}
+ if cursor:
+ meta['cursor.kind'] = cursor.kind,
+ meta['cursor.displayname'] = cursor.displayname,
+ meta['cursor.spelling'] = cursor.spelling
+
+ return [(doc, meta)]
+
# Return None for simple macros, a potentially empty list of arguments for
# function-like macros
def _get_macro_args(cursor):
@@ -116,6 +136,121 @@ def _get_macro_args(cursor):
return None
+def _recursive_parse(comments, cursor, nest, compat):
+ comment = comments[cursor.hash]
+ name = cursor.spelling
+ ttype = cursor.type.spelling
+
+ if cursor.kind == CursorKind.MACRO_DEFINITION:
+ # FIXME: check args against comment
+ args = _get_macro_args(cursor)
+ fmt = docstr.Type.MACRO if args is None else docstr.Type.MACRO_FUNC
+
+ return _result(comment, cursor=cursor, fmt=fmt,
+ nest=nest, name=name, args=args, compat=compat)
+
+ elif cursor.kind == CursorKind.VAR_DECL:
+ fmt = docstr.Type.VAR
+
+ return _result(comment, cursor=cursor, fmt=fmt,
+ nest=nest, name=name, ttype=ttype, compat=compat)
+
+ elif cursor.kind == CursorKind.TYPEDEF_DECL:
+ # FIXME: function pointers typedefs.
+ fmt = docstr.Type.TYPE
+
+ return _result(comment, cursor=cursor, fmt=fmt,
+ nest=nest, name=ttype, compat=compat)
+
+ elif cursor.kind in [CursorKind.STRUCT_DECL, CursorKind.UNION_DECL]:
+ fmt = docstr.Type.TYPE
+ result = _result(comment, cursor=cursor, fmt=fmt,
+ nest=nest, name=ttype, compat=compat)
+
+ nest += 1
+ for c in cursor.get_children():
+ if c.kind != CursorKind.FIELD_DECL:
+ # FIXME: Recurse for new structure or union.
+ pass
+
+ if c.hash not in comments:
+ continue
+
+ comment = comments[c.hash]
+ if not docstr.is_doc(comment.spelling):
+ continue
+ text = comment.spelling
+ fmt = docstr.Type.MEMBER
+ name = c.spelling
+ ttype = c.type.spelling
+
+ result.extend(_result(comment, cursor=cursor, fmt=fmt, nest=nest,
+ name=name, ttype=ttype, compat=compat))
+
+ return result
+
+ elif cursor.kind == CursorKind.ENUM_DECL:
+ # FIXME: Handle anonymous enumerators.
+ comment = comments[cursor.hash]
+ fmt = docstr.Type.TYPE
+ name = cursor.type.spelling
+ result = _result(comment, cursor=cursor, fmt=fmt, nest=nest,
+ name=name, compat=compat)
+
+ nest += 1
+ for c in cursor.get_children():
+ if c.hash not in comments:
+ continue
+ comment = comments[c.hash]
+ if not docstr.is_doc(comment.spelling):
+ continue
+
+ text = comment.spelling
+ fmt = docstr.Type.ENUM_VAL
+ name = c.spelling
+
+ result.extend(_result(comment, cursor=cursor, fmt=fmt,
+ nest=nest, name=name, compat=compat))
+
+ return result
+
+ elif cursor.kind == CursorKind.FUNCTION_DECL:
+ # FIXME: check args against comment
+ # FIXME: children may contain extra stuff if the return type is a
+ # typedef, for example
+ # FIXME: handle ... params
+ args = []
+ for c in cursor.get_children():
+ if c.kind == CursorKind.PARM_DECL:
+ args.append('{ttype} {arg}'.format(ttype=c.type.spelling,
+ arg=c.spelling))
+
+ fmt = docstr.Type.FUNC
+ ttype = cursor.result_type.spelling
+
+ return _result(comment, cursor=cursor, fmt=fmt, nest=nest,
+ name=name, ttype=ttype, args=args, compat=compat)
+
+ # FIXME: If we reach here, nothing matched. This is a warning or even
error
+ # and it should be logged, but it should also return an empty list so
that
+ # it doesn't break. I.e. the parser needs to pass warnings and errors to
the
+ # Sphinx extension instead of polluting the generated output.
+ fmt = docstr.Type.TEXT
+ text = 'warning: unhandled cursor {kind} {name}\n'.format(
+ kind=str(cursor.kind),
+ name=cursor.spelling)
+
+ doc = docstr.generate(text=text, fmt=fmt)
+
+ meta = {
+ 'line': comment.extent.start.line,
+ 'cursor.kind': cursor.kind,
+ 'cursor.displayname': cursor.displayname,
+ 'cursor.spelling': cursor.spelling
+ }
+
+ return [(doc, meta)]
+
# return a list of (comment, metadata) tuples
# options - dictionary with directive options
def parse(filename, **options):
@@ -134,21 +269,14 @@ def parse(filename, **options):
top_level_comments, comments = comment_extract(tu)
- # FIXME: docstr.generate changes the number of lines in output. This
impacts
- # the error reporting via meta['line']. Adjust meta to take this into
- # account.
-
result = []
compat = lambda x: doccompat.convert(x, options.get('compat'))
for comment in top_level_comments:
- if not docstr.is_doc(comment.spelling):
- continue
-
- doc = docstr.generate(comment.spelling, transform=compat)
- meta = {'line': comment.extent.start.line}
- result.append((doc, meta))
+ if docstr.is_doc(comment.spelling):
+ result.extend(_result(comment, compat=compat))
+ # Bootstrap the individual parsers.
for cursor in tu.cursor.get_children():
if cursor.hash not in comments:
continue
@@ -156,130 +284,9 @@ def parse(filename, **options):
if not docstr.is_doc(comment.spelling):
continue
- text = comment.spelling
- name = None
- ttype = None
- args = None
+ result.extend(_recursive_parse(comments, cursor, 0, compat))
- if cursor.kind == CursorKind.MACRO_DEFINITION:
- # FIXME: check args against doc_comment
- args = _get_macro_args(cursor)
- name = cursor.spelling
- fmt = docstr.Type.MACRO if args is None else
docstr.Type.MACRO_FUNC
-
- elif cursor.kind == CursorKind.VAR_DECL:
- fmt = docstr.Type.VAR
- ttype = cursor.type.spelling
- name = cursor.spelling
-
- elif cursor.kind == CursorKind.TYPEDEF_DECL:
- fmt = docstr.Type.TYPE
- name = cursor.spelling
-
- elif (cursor.kind == CursorKind.STRUCT_DECL or
- cursor.kind == CursorKind.UNION_DECL or
- cursor.kind == CursorKind.ENUM_DECL):
- fmt = docstr.Type.TYPE
- name = cursor.type.spelling
-
- elif cursor.kind == CursorKind.FUNCTION_DECL:
- # FIXME: check args against doc_comment
- # FIXME: children may contain extra stuff if the return type is a
- # typedef, for example
- # FIXME: handle ... params
- args = []
- for c in cursor.get_children():
- if c.kind == CursorKind.PARM_DECL:
- args.append('{ttype} {arg}'.format(
- ttype=c.type.spelling,
- arg=c.spelling))
-
- fmt = docstr.Type.FUNC
- name = cursor.spelling
- ttype = cursor.result_type.spelling
-
- else:
- fmt = docstr.Type.TEXT
- text = 'warning: unhandled cursor {kind} {name}\n'.format(
- kind=str(cursor.kind),
- name=cursor.spelling)
-
- doc = docstr.generate(text=text, fmt=fmt, name=name,
- ttype=ttype, args=args, transform=compat)
-
- meta = {
- 'line': comment.extent.start.line,
- 'cursor.kind': cursor.kind,
- 'cursor.displayname': cursor.displayname,
- 'cursor.spelling': cursor.spelling
- }
-
- result.append((doc, meta))
-
- # FIXME: Needs some code deduplication with the above.
- if (cursor.kind == CursorKind.STRUCT_DECL or
- cursor.kind == CursorKind.UNION_DECL):
-
- for c in cursor.get_children():
- if c.kind != CursorKind.FIELD_DECL:
- # FIXME: handle nested unions
- pass
- # continue
-
- if c.hash not in comments:
- continue
- comment = comments[c.hash]
- if not docstr.is_doc(comment.spelling):
- continue
- text = comment.spelling
-
- # FIXME: this is sooo ugly, handles unnamed vs. named structs
- # in typedefs
- # FIXME: do this recursively and smartly
-
- fmt = docstr.Type.MEMBER
- name = c.spelling
- ttype = c.type.spelling
-
- doc = docstr.generate(text=text, fmt=fmt, name=name,
- ttype=ttype, args=args,
transform=compat)
- doc = docstr.nest(doc, 1)
-
- meta = {
- 'line': comment.extent.start.line,
- 'cursor.kind': cursor.kind,
- 'cursor.displayname': cursor.displayname,
- 'cursor.spelling': cursor.spelling
- }
-
- result.append((doc, meta))
-
- elif cursor.kind == CursorKind.ENUM_DECL:
- for c in cursor.get_children():
- if c.hash not in comments:
- continue
- comment = comments[c.hash]
- if not docstr.is_doc(comment.spelling):
- continue
-
- text = comment.spelling
- fmt = docstr.Type.ENUM_VAL
- name = c.spelling
-
- doc = docstr.generate(text=text, fmt=fmt, name=name,
- ttype=ttype, args=args,
transform=compat)
- doc = docstr.nest(doc, 1)
-
- meta = {
- 'line': comment.extent.start.line,
- 'cursor.kind': cursor.kind,
- 'cursor.displayname': cursor.displayname,
- 'cursor.spelling': cursor.spelling
- }
-
- result.append((doc, meta))
-
- # sort to interleave top level comments back in place
+ # Sort all elements by order of appearance.
result.sort(key=lambda r: r[1]['line'])
return result
--
2.20.1
