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86076bbf32
the code is a bit more complicated since unions can have structs or simple types. Also change Telemetry sensor to be a struct, since a class with all public is identical to a struct in C++
92 lines
3.5 KiB
Python
Executable file
92 lines
3.5 KiB
Python
Executable file
#!/usr/bin/env python
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from __future__ import print_function
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import sys
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import clang.cindex
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import time
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import os
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if sys.platform == "darwin":
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clang.cindex.Config.set_library_file('/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/libclang.dylib')
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structs = []
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extrastructs = []
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def build_struct(cursor, anonymousUnion=False):
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if not anonymousUnion:
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structs.append(cursor.spelling)
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print("template <class A, class B>\nvoid copy%s(A * dest, B * src)\n{" % cursor.spelling)
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for c in cursor.get_children():
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if c.kind == clang.cindex.CursorKind.UNION_DECL:
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if c.spelling:
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raise "Cannot handle non anonymous unions"
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copiedUnionMember = False
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for uc in c.get_children():
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if not uc.spelling or uc.kind == clang.cindex.CursorKind.PACKED_ATTR:
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# Ignore
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pass
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else:
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# per default we copy only the first member of a union and warn if there are more
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# members (declare the other members NOBACKUP)
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if copiedUnionMember:
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print ("Warning more than one union member (%s) in anynomous union inside struct %s, consider NOBACKUP statements" % (uc.spelling, cursor.spelling), file=sys.stderr)
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else:
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copy_decl(uc, uc.spelling)
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copiedUnionMember = True
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elif c.kind == clang.cindex.CursorKind.FIELD_DECL:
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copy_decl(c, c.spelling)
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if not anonymousUnion:
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print("}\n")
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def build(cursor):
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result = []
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for c in cursor.get_children():
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if c.kind == clang.cindex.CursorKind.STRUCT_DECL:
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build_struct(c)
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for c, spelling in extrastructs:
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print("template <class A, class B>\nvoid copy%s(A * dest, B * src)\n{" % spelling)
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build_struct(c, True)
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print ("}\n")
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return result
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def copy_decl(c, spelling):
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childs = [ch for ch in c.get_children()]
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if c.type.get_array_size() > 0:
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if c.type.get_array_element_type().spelling in structs:
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print(" for (int i=0; i<%d; i++) {" % c.type.get_array_size())
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print(" copy%s(&dest->%s[i], &src->%s[i]);" % (c.type.get_array_element_type().spelling, spelling, spelling))
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print(" }")
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else:
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print(" memcpy(dest->%s, src->%s, sizeof(dest->%s));" % (spelling, spelling, spelling))
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elif c.type.kind == clang.cindex.TypeKind.UNEXPOSED and len(childs)==1 and childs[0].kind == clang.cindex.CursorKind.STRUCT_DECL:
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# inline declared structs
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if c.semantic_parent.spelling:
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spellingFunc = c.semantic_parent.spelling + "_" + spelling
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else:
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spellingFunc = c.semantic_parent.semantic_parent.spelling + "_" + spelling
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extrastructs.append((childs[0], spellingFunc))
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print(" copy%s(&dest->%s, &src->%s);" % (spellingFunc, spelling, spelling))
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elif c.type.get_declaration().spelling in structs:
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print(" copy%s(&dest->%s, &src->%s);" % (c.type.get_declaration().spelling, spelling, spelling))
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else:
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print(" dest->%s = src->%s;" % (spelling, spelling))
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def header():
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print("//This file was auto-generated by %s script on %s. Do not edit this file!\n\n\n" % (os.path.basename(sys.argv[0]), time.asctime()))
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index = clang.cindex.Index.create()
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translation_unit = index.parse(sys.argv[1], ['-x', 'c++', '-std=c++11'] + sys.argv[2:])
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header()
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build(translation_unit.cursor)
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