Utilities

Functions
DAS_API int	das_op_unary (const char *sOp)
	Convert a string into a unary operator token.
DAS_API int	das_op_binary (const char *sOp)
	Convert a string into a binary operator token.
DAS_API const char *	das_op_toStr (int nOp, int *pos)
	Provide a string representation of an operator token and an indication of where the operator normally appears.
DAS_API bool	das_op_isBinary (int nOp)
	Return true if this is a binary operation, false otherwise.
DAS_API bool	das_op_isUnary (int nOp)
	Return true if op is a unary operation, false otherwise.

Detailed Description

Function Documentation

das_op_unary()

DAS_API int das_op_unary

(

const char *

sOp

)

Convert a string into a unary operator token.

Parameters

sOp	a string such as "-", "sqrt", etc.

Returns

an operator token id or 0 if the string did not correspond to a known unary operator

das_op_binary()

DAS_API int das_op_binary

(

const char *

sOp

)

Convert a string into a binary operator token.

Parameters

sOp	a string such as "+", "-", "*", "/", "**", "^" etc.

Returns

an operator token id or 0 if the string did not correspond to a known unary operator

das_op_toStr()

DAS_API const char * das_op_toStr	(	int	nOp,
		int *	pos
	)

Provide a string representation of an operator token and an indication of where the operator normally appears.

Parameters

nOp	The operator token value
pos	a pointer to an integer to receive one of the values D2OP_BEFORE, D2OP_BETWEEN or D2OP_AFTER. If pos is NULL the operator position is not set.

Returns

A pointer to a character representation of the operator or NULL if the token nOp is unknown.