oofem::Parser Class Reference

#include <parser.h>

Collaboration diagram for oofem::Parser:

Classes
struct	name

Public Member Functions
	Parser ()
	~Parser ()
double	eval (const char *string, int &err)
void	eval (const char *string, FloatArray &answer, const char *name, int &err)
void	setVariableValue (const char *name, int indx, double value)
void	reset ()

Private Types
enum	Token_value {   NAME , NUMBER , END , SQRT_FUNC ,   SIN_FUNC , COS_FUNC , TAN_FUNC , ATAN_FUNC ,   ASIN_FUNC , ACOS_FUNC , EXP_FUNC , INT_FUNC ,   HEAVISIDE_FUNC , HEAVISIDE_FUNC1 , PLUS ='+' , MINUS ='-' ,   MUL ='*' , DIV ='/' , MOD ='' , POW ='^' ,   BOOL_EQ , BOOL_LE , BOOL_LT , BOOL_GE ,   BOOL_GT , PRINT =';' , ASSIGN ='=' , LP ='(' ,   RP =')' , LB ='[' , RB =']' }

Private Member Functions
name *	look (const char *p, int ins=0)
name *	insert (const char *s)
void	error (const char *s)
double	expr (bool get)
double	term (bool get)
double	prim (bool get)
double	agr (bool get)
Token_value	get_token ()
double	getVariableValue (const char *name, int indx)

Private Attributes
int	no_of_errors
Token_value	curr_tok
name *	table [Parser_TBLSZ]
double	number_value =0.0
char	string_value [Parser_CMD_LENGTH] =""
const char *	parsedLine = nullptr

Detailed Description

Class for evaluating mathematical expressions in strings. Strings should be in MATLAB syntax. The parser understands variable names with values set by "x=expression;" The following binary operators are recognized: < > == + - * / and the following functions: sqrt, sin, cos, tan, atan, asin, acos, exp, as well as parentheses ( )

Example string: x=3;y=7;sqrt(x*(x/y+3))

Definition at line 55 of file parser.h.

Member Enumeration Documentation

Token_value

enum oofem::Parser::Token_value

private

Enumerator
NAME
NUMBER
END
SQRT_FUNC
SIN_FUNC
COS_FUNC
TAN_FUNC
ATAN_FUNC
ASIN_FUNC
ACOS_FUNC
EXP_FUNC
INT_FUNC
HEAVISIDE_FUNC
HEAVISIDE_FUNC1
PLUS
MINUS
MUL
DIV
MOD
POW
BOOL_EQ
BOOL_LE
BOOL_LT
BOOL_GE
BOOL_GT
PRINT
ASSIGN
LP
RP
LB
RB

Definition at line 76 of file parser.h.

Constructor & Destructor Documentation

Parser()

oofem::Parser::Parser ( )

inline

Definition at line 58 of file parser.h.

References curr_tok, no_of_errors, Parser_TBLSZ, PRINT, and table.

~Parser()

oofem::Parser::~Parser ( )

inline

Definition at line 65 of file parser.h.

References reset().

Member Function Documentation

agr()

double oofem::Parser::agr ( bool get )

private

Definition at line 238 of file parser.C.

References curr_tok, expr(), get_token(), LP, OOFEM_ERROR, and RP.

Referenced by error(), and prim().

error()

void oofem::Parser::error ( const char * s )

private

References agr(), expr(), get_token(), getVariableValue(), prim(), and term().

eval() [1/2]

void oofem::Parser::eval	(	const char *	string,
		FloatArray &	answer,
		const char *	name,
		int &	err )

Definition at line 433 of file parser.C.

References oofem::Parser::name::arrayValue, oofem::FloatArray::at(), curr_tok, oofem::Parser::name::doubleValue, END, expr(), look(), no_of_errors, parsedLine, oofem::FloatArray::resize(), and oofem::Parser::name::size.

eval() [2/2]

double oofem::Parser::eval	(	const char *	string,
		int &	err )

Definition at line 419 of file parser.C.

References curr_tok, END, expr(), no_of_errors, and parsedLine.

Referenced by oofem::ScalarFunction::eval(), oofem::CalculatorFunction::evaluate(), oofem::CalculatorFunction::evaluateAccelerationAtTime(), oofem::ExpressionField::evaluateAt(), oofem::CalculatorFunction::evaluateAtTime(), and oofem::CalculatorFunction::evaluateVelocityAtTime().

expr()

double oofem::Parser::expr ( bool get )

private

Definition at line 44 of file parser.C.

References curr_tok, MINUS, PLUS, and term().

Referenced by agr(), error(), eval(), eval(), and prim().

get_token()

Parser::Token_value oofem::Parser::get_token ( )

private

Definition at line 261 of file parser.C.

References ACOS_FUNC, ASIN_FUNC, ASSIGN, ATAN_FUNC, BOOL_EQ, BOOL_GE, BOOL_GT, BOOL_LE, BOOL_LT, COS_FUNC, curr_tok, END, EXP_FUNC, HEAVISIDE_FUNC, HEAVISIDE_FUNC1, INT_FUNC, M_PI, NAME, NUMBER, number_value, OOFEM_ERROR, parsedLine, Parser_CMD_LENGTH, PRINT, SIN_FUNC, SQRT_FUNC, string_value, and TAN_FUNC.

Referenced by agr(), error(), and prim().

getVariableValue()

double oofem::Parser::getVariableValue ( const char * name, int indx )

private

Definition at line 494 of file parser.C.

References oofem::Parser::name::arrayValue, oofem::FloatArray::at(), oofem::Parser::name::doubleValue, look(), OOFEM_ERROR, and oofem::Parser::name::size.

Referenced by error(), and prim().

insert()

name * oofem::Parser::insert ( const char * s )

inlineprivate

Definition at line 100 of file parser.h.

References look().

look()

Parser::name * oofem::Parser::look ( const char * p, int ins = 0 )

private

Definition at line 383 of file parser.C.

References oofem::Parser::name::arrayValue, oofem::FloatArray::clear(), oofem::Parser::name::doubleValue, oofem::Parser::name::next, OOFEM_ERROR, Parser_TBLSZ, oofem::Parser::name::size, oofem::Parser::name::string, and table.

Referenced by eval(), getVariableValue(), insert(), prim(), and setVariableValue().

prim()

double oofem::Parser::prim ( bool get )

private

Definition at line 113 of file parser.C.

References ACOS_FUNC, agr(), ASIN_FUNC, ASSIGN, ATAN_FUNC, COS_FUNC, curr_tok, EXP_FUNC, expr(), get_token(), getVariableValue(), HEAVISIDE_FUNC, HEAVISIDE_FUNC1, INT_FUNC, LB, look(), LP, MINUS, NAME, NUMBER, number_value, OOFEM_ERROR, prim(), RB, RP, setVariableValue(), SIN_FUNC, SQRT_FUNC, string_value, and TAN_FUNC.

Referenced by error(), prim(), and term().

reset()

void oofem::Parser::reset

(

)

Definition at line 453 of file parser.C.

References oofem::Parser::name::next, Parser_TBLSZ, oofem::Parser::name::string, and table.

Referenced by ~Parser().

setVariableValue()

void oofem::Parser::setVariableValue	(	const char *	name,
		int	indx,
		double	value )

Definition at line 470 of file parser.C.

References oofem::Parser::name::arrayValue, oofem::FloatArray::at(), oofem::Parser::name::doubleValue, look(), OOFEM_ERROR, oofem::FloatArray::resize(), and oofem::Parser::name::size.

Referenced by oofem::ExpressionField::evaluateAt(), and prim().

term()

double oofem::Parser::term ( bool get )

private

Definition at line 68 of file parser.C.

References BOOL_EQ, BOOL_GE, BOOL_GT, BOOL_LE, BOOL_LT, curr_tok, DIV, MOD, MUL, OOFEM_ERROR, POW, and prim().

Referenced by error(), and expr().

Member Data Documentation

curr_tok

Token_value oofem::Parser::curr_tok

private

Definition at line 84 of file parser.h.

Referenced by agr(), eval(), eval(), expr(), get_token(), Parser(), prim(), and term().

no_of_errors

int oofem::Parser::no_of_errors

private

Definition at line 83 of file parser.h.

Referenced by eval(), eval(), and Parser().

number_value

double oofem::Parser::number_value =0.0

private

Definition at line 95 of file parser.h.

Referenced by get_token(), and prim().

parsedLine

const char* oofem::Parser::parsedLine = nullptr

private

Definition at line 97 of file parser.h.

Referenced by eval(), eval(), and get_token().

string_value

char oofem::Parser::string_value[Parser_CMD_LENGTH] =""

private

Definition at line 96 of file parser.h.

Referenced by get_token(), and prim().

table

name* oofem::Parser::table[Parser_TBLSZ]

private

Definition at line 94 of file parser.h.

Referenced by look(), Parser(), and reset().

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The documentation for this class was generated from the following files:

• parser.h
• parser.C