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Parser #63

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31581c3
Isolated parser service. Made other function schemas compatible
BranBerAVI Jun 4, 2021
e122fc6
Removed an unimportant comment
BranBerAVI Jun 4, 2021
615dbcf
Implement pull request changes from reviewer
BranBerAVI Jun 17, 2021
7568774
Make parser service changes backwards compatible
BranBerAVI Jun 19, 2021
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157 changes: 157 additions & 0 deletions parser/parser/constants.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,157 @@
"""
From:
https://www.ibm.com/docs/en/i/7.3?topic=extensions-standard-c-library-functions-table-by-name
https://www.cplusplus.com/reference/iolibrary/#:~:text=A%20stream%20is%20an%20abstraction,and%20ouput%20operations%20are%20performed.&text=For%20example%2C%20file%20streams%20are,physically%20reflected%20in%20the%20file.
https://www.cprogramming.com/function.html

It's necessary to keep track of the names of built in functions/streams/reservered keywords so that the
algorithms in the srcmlparser FunctionCollector class doesn't confuse the names of certain srcml elements
with variable names in expression tags that are being parsed and collected. If they do get confused, it could
reduce the accuracy of the flow metric.
"""

C_LIB_FUNCTIONS = ('abort', 'abs', 'acos', 'asctime',
'asctime_r', 'asin', 'assert', 'atan',
'atan2', 'atexit', 'atof', 'atoi',
'atol', 'bsearch', 'btowc', 'calloc',
'catclose', 'catgets', 'catopen', 'ceil',
'clearerr', 'clock', 'cos', 'cosh',
'ctime', 'ctime64', 'ctime_r', 'ctime64_r',
'difftime', 'difftime64', 'div', 'erf',
'erfc', 'exit', 'exp', 'fabs',
'fclose', 'fdopen', 'feof', 'ferror',
'fflush', 'fgetc', 'fgetpos', 'fgets',
'fgetwc', 'fgetws', 'fileno', 'floor',
'fmod', 'fopen', 'fprintf', 'fputc',
'fputs', 'fputwc', 'fputws', 'fread',
'free', 'freopen', 'frexp', 'fscanf',
'fseek', 'fsetpos', 'ftell', 'fwide',
'fwprintf', 'fwrite', 'fwscanf', 'gamma',
'getc', 'getchar', 'getenv', 'gets',
'getwc', 'getwchar', 'gmtime', 'gmtime64',
'gmtime_r', 'gmtime64_r', 'hypot', 'isalnum',
'isalpha', 'isascii', 'isblank', 'iscntrl',
'isdigit', 'isgraph', 'islower', 'isprint',
'ispunct', 'isspace', 'isupper', 'iswalnum',
'iswalpha', 'iswblank', 'iswcntrl', 'iswctype',
'iswdigit', 'iswgraph', 'iswlower', 'iswprint',
'iswpunct', 'iswspace', 'iswupper', 'iswxdigit',
'isxdigit', 'j0', 'j1', 'jn',
'labs', 'ldexp', 'ldiv', 'localeconv',
'localtime', 'localtime64', 'localtime_r', 'localtime64_r',
'log', 'log10', 'longjmp', 'malloc',
'mblen', 'mbrlen', 'mbrtowc', 'mbsinit',
'mbsrtowcs', 'mbstowcs', 'mbtowc', 'memchr',
'memcmp', 'memcpy', 'memmove', 'memset',
'mktime', 'mktime64', 'modf', 'nextafter',
'nextafterl', 'nexttoward', 'nexttowardl', 'nl_langinfo',
'perror', 'pow', 'printf', 'putc',
'putchar', 'putenv', 'puts', 'putwc',
'putwchar', 'qsort', 'quantexpd32', 'quantexpd64',
'quantexpd128', 'quantized32', 'quantized64', 'quantized128',
'samequantumd32', 'samequantumd64', 'samequantumd128', 'raise',
'rand', 'rand_r', 'realloc', 'regcomp',
'regerror', 'regexec', 'regfree', 'remove',
'rename', 'rewind', 'scanf', 'setbuf',
'setjmp', 'setlocale', 'setvbuf', 'signal',
'sin', 'sinh', 'snprintf', 'sprintf',
'sqrt', 'srand', 'sscanf', 'strcasecmp',
'strcat', 'strchr', 'strcmp', 'strcoll',
'strcpy', 'strcspn', 'strerror', 'strfmon',
'strftime', 'strlen', 'strncasecmp', 'strncat',
'strncmp', 'strncpy', 'strpbrk', 'strptime',
'strrchr', 'strspn', 'strstr', 'strtod',
'strtod32', 'strtod64', 'strtod128', 'strtof',
'strtok', 'strtok_r', 'strtol', 'strtold',
'strtoul', 'strxfrm', 'swprintf', 'swscanf',
'system', 'tan', 'tanh', 'time',
'time64', 'tmpfile', 'tmpnam', 'toascii',
'tolower', 'toupper', 'towctrans', 'towlower',
'towupper', 'ungetc', 'ungetwc', 'va_arg',
'va_copy', 'va_end', 'va_start', 'vfprintf',
'vfscanf','vfwprintf', 'vfwscanf', 'vprintf',
'vscanf', 'vsprintf', 'vsnprintf', 'vsscanf',
'vswprintf', 'vswscanf', 'vwprintf', 'vwscanf',
'wcrtomb', 'wcscat', 'wcschr', 'wcscmp',
'wcscoll', 'wcscpy', 'wcscspn', 'wcsftime',
'wcslen', 'wcslocaleconv', 'wcsncat', 'wcsncmp',
'wcsncpy', 'wcspbrk', 'wcsptime', 'wcsrchr',
'char *ctime64_r(const time64_t *time, char *buf);',
'wcsspn', 'wcsstr', 'wcstod', 'wcstod32',
'wcstod64', 'wcstod128', 'wcstof', 'wcstok', 'wcstol',
'wcstold', 'wcstombs', 'wcstoul', 'wcsxfrm',
'wctob', 'wctomb', 'wctrans', 'wctype',
'wcwidth', 'wmemchr', 'wmemcmp', 'wmemcpy',
'wmemmove', 'wmemset', 'wprintf','wscanf',
'y0', 'y1', 'yn')

C_LIB_STREAMS = ("stderr", "stdout")

C_RESERVED_KEYWORDS = (
"auto", "const", "int", "short", "struct",
"unsigned", "double", "float", "break", "continue",
"long", "signed", "switch", "void", "else", "for", "case",
"default", "register", "sizeof", "typedef", "volatile",
"enum", "goto", "char", "do", "return", "static",
"union", "while", "extern", "if")

C_PLUS_PLUS_STDLIB_FUNCS = (
'abort', 'abs' ,'acos', 'asin',
'atan', 'atexit', 'atof', 'atoi',
'atol', 'ceil', 'clock', 'cosh',
'ctime', 'div', 'exit', 'fabs',
'floor', 'fmod', 'getchar', 'getenv',
'isalnum', 'isalpha', 'isdigit', 'isgraph',
'ispunct', 'isspace', 'isupper', 'kbhit',
'log10', 'log2', 'log', 'memcmp',
'modf', 'pow', 'putchar', 'putenv',
'puts', 'rand', 'remove', 'rename',
'sinh', 'sqrt', 'srand', 'strcat',
'strcmp', 'strerror', 'time', 'tolower',
'toupper',
)

C_PLUS_PLUS_RESERVED_KEYWORDS = (
'alignas', 'alignof', 'and', 'and_eq',
'asm', 'atomic_cancel', 'atomic_commit', 'atomic_noexcept',
'auto', 'bitand', 'bitor', 'bool',
'break', 'case', 'catch', 'char',
'char8_t', 'char16_t', 'char32_t', 'class',
'compl', 'concept', 'const', 'consteval',
'constexpr', 'constinit', 'const_cast', 'continue',
'co_await', 'co_return', 'co_yield', 'decltype',
'default', 'delete', 'do', 'double',
'dynamic_cast', 'else', 'enum', 'explicit',
'export', 'extern', 'false', 'float',
'for', 'friend', 'goto', 'if',
'inline', 'int', 'long', 'mutable',
'namespace', 'new', 'noexcept', 'not',
'not_eq', 'nullptr', 'operator', 'or',
'or_eq', 'private', 'protected', 'public',
'reflexpr', 'register', 'reinterpret_cast', 'requires',
'return', 'short', 'signed', 'sizeof',
'static', 'static_assert', 'static_cast', 'struct',
'switch', 'synchronized', 'template', 'this',
'thread_local', 'throw', 'true', 'try',
'typedef', 'typeid', 'typename', 'union',
'unsigned', 'using (1)', 'virtual', 'void',
'volatile', 'wchar_t', 'while', 'xor',
'xor_eq')

C_PLUS_PLUS_STREAMS = (
'cin', 'cout', 'cerr', 'clog'
)

def _get_constants_from_language(language):
if language == 'C':
return (
C_LIB_FUNCTIONS,
C_LIB_STREAMS,
C_RESERVED_KEYWORDS)
elif language == 'C++':
return (
C_PLUS_PLUS_STDLIB_FUNCS,
C_PLUS_PLUS_STREAMS,
C_PLUS_PLUS_RESERVED_KEYWORDS)

return (), (), ()
58 changes: 57 additions & 1 deletion parser/parser/models.py
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
from __future__ import annotations
import dataclasses


@dataclasses.dataclass(frozen=True)
class Position:
__slots__ = ['line', 'column']
Expand Down Expand Up @@ -31,3 +31,59 @@ class Function:

signature: str
span: Span

@dataclasses.dataclass(frozen=True)
class GlobalVariableWrite:
__slots__ = [
'expressions',
'members_modified',
'indices_modified']

expressions: list(str)
members_modified: list(str)
indices_modified: list(str)

@dataclasses.dataclass(frozen=True)
class AcyclicalPath:
__slots__ = [
'type',
'children',
'if_type'
]

type: str
children: list(AcyclicalPath)
if_type: str

def __init__(
self,
type: str,
children: list(AcyclicalPath),
if_type: str = None):
object.__setattr__(self, 'type', type)
object.__setattr__(self, 'children', children)
object.__setattr__(self, 'if_type', if_type)

@dataclasses.dataclass(frozen=True)
class FunctionProperties(Function):
__slots__ = [
'function_name',
'calls',
'callers',
'acyclical_paths_tree',
'has_return',
'parent_structure_name',
'parent_structure_type',
'global_variable_writes',
'global_variable_reads'
]

function_name: str
calls: list(str)
callers: list(str)
acyclical_paths_tree: list(AcyclicalPath)
has_return: bool
parent_structure_name: str
parent_structure_type: str
global_variable_writes: list(GlobalVariableWrite)
global_variable_reads: list(str)
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