Structure to help class command_math parse it's parameters. More...

Classes
struct	depth_guard
	Manages depth of a math_parser instance during its lifetime. More...

struct	expvar
	Structure to hold variable information in sequence functions. More...

Public Member Functions
	math_parser (const std::span< const std::string > &vTokens) noexcept

std::int64_t	do_toplevel (std::size_t &nPos, const expvar &nX)
	Evaluate a full expression (top-level entry point).

void	increase_depth ()
	Increases the current recursion/evaluation depth. Ensures that the depth does not exceed MAX_DEPTH.

void	decrease_depth ()
	Decreases the current recursion/evaluation depth. Will not decrement below zero.

Static Public Attributes
static constexpr std::size_t	MAX_DEPTH = 512
	Maximum depth of the shell parser.

static std::map< std::string_view, math_operator >	OPERATORS
	Map containing operator expressions and codes.

Detailed Description

Structure to help class command_math parse it's parameters.

Constructor & Destructor Documentation

◆ math_parser()

bs::math_parser::math_parser ( const std::span< const std::string > & vTokens )

inlineexplicitnoexcept

Contstructs a math_parser

Parameters

vTokens Tokens to parse

Member Function Documentation

◆ do_toplevel()

std::int64_t bs::math_parser::do_toplevel	(	std::size_t &	nPos,
		const expvar &	nX
	)

Evaluate a full expression (top-level entry point).

Parameters

nPos	Token positon
nX	Variable map

Returns: Operation result

◆ increase_depth()

void bs::math_parser::increase_depth ( )

inline

Increases the current recursion/evaluation depth. Ensures that the depth does not exceed MAX_DEPTH.

Exceptions

math_error If increasing the depth would exceed MAX_DEPTH.

Member Data Documentation

◆ OPERATORS

std::map< std::string_view, math_operator > bs::math_parser::OPERATORS

static

Initial value:

= {
        {"+", math_operator::MO_PLUS},
        {"-", math_operator::MO_MINUS},
        {"*", math_operator::MO_MULT},
        {"/", math_operator::MO_DIV},
        {"%", math_operator::MO_MOD},
        {"^", math_operator::MO_POW},
        {"**", math_operator::MO_POW},
        {"\u00D7", math_operator::MO_MULT},
        {"\u00F7", math_operator::MO_DIV},
        {"factorial", math_operator::MO_FACTORIAL},
        {"sign", math_operator::MO_SIGN},
        {"abs", math_operator::MO_ABS},
        {"sum", math_operator::MO_SUM},
        {"product", math_operator::MO_PRODUCT},
        {",", math_operator::MO_FUNC_ARG_SEP},
        {"(", math_operator::MO_OPEN_PARENTHESIS},
        {")", math_operator::MO_CLOSE_PARENTHESIS},
    }

Map containing operator expressions and codes.

The documentation for this struct was generated from the following file:

/home/runner/work/bashspark/bashspark/src/BashSpark/command/command_math.cpp

Classes

Public Member Functions

Static Public Attributes