`dissect.cstruct.expression`¶

Module Contents¶

Classes¶

`ExpressionTokenizer`
`Expression`	Expression parser for calculations in definitions.

Attributes¶

HEXBIN_SUFFIX

dissect.cstruct.expression.HEXBIN_SUFFIX¶

class dissect.cstruct.expression.ExpressionTokenizer(expression: str)¶

expression¶

pos = 0¶

tokens = []¶

equal(token: str, expected: str | set[str]) → bool¶

alnum(token: str) → bool¶

alpha(token: str) → bool¶

digit(token: str) → bool¶

hexdigit(token: str) → bool¶

operator(token: str) → bool¶

match(func: Callable[[str], bool] | None = None, expected: str | None = None, consume: bool = True, append: bool = True) → bool¶

consume() → None¶

eol() → bool¶

get_token() → str¶

tokenize() → list[str]¶

class dissect.cstruct.expression.Expression(cstruct: Expression.__init__.cstruct, expression: str)¶

Expression parser for calculations in definitions.

binary_operators: ClassVar[dict[str, Callable[[int, int], int]]]¶

unary_operators: ClassVar[dict[str, Callable[[int], int]]]¶

precedence_levels: ClassVar[dict[str, int]]¶

cstruct¶

expression¶

tokens = []¶

stack = []¶

queue = []¶

__repr__() → str¶

precedence(o1: str, o2: str) → bool¶

evaluate_exp() → None¶

is_number(token: str) → bool¶

evaluate(context: dict[str, int] | None = None) → int¶: Evaluates an expression using a Shunting-Yard implementation.