expression.c File Reference

Expressions handling. More...

#include "expression.h"
#include "error.h"
#include "parser.h"
#include "lexer_private.h"

Go to the source code of this file.

Functions
static scpi_expr_result_t	numericRange (lex_state_t *state, scpi_bool_t *isRange, scpi_token_t *valueFrom, scpi_token_t *valueTo)
scpi_expr_result_t	SCPI_ExprNumericListEntry (scpi_t *context, scpi_parameter_t *param, int index, scpi_bool_t *isRange, scpi_parameter_t *valueFrom, scpi_parameter_t *valueTo)
scpi_expr_result_t	SCPI_ExprNumericListEntryInt (scpi_t *context, scpi_parameter_t *param, int index, scpi_bool_t *isRange, int32_t *valueFrom, int32_t *valueTo)
scpi_expr_result_t	SCPI_ExprNumericListEntryDouble (scpi_t *context, scpi_parameter_t *param, int index, scpi_bool_t *isRange, double *valueFrom, double *valueTo)
static scpi_expr_result_t	channelSpec (scpi_t *context, lex_state_t *state, int32_t *values, size_t length, size_t *dimensions)
static scpi_expr_result_t	channelRange (scpi_t *context, lex_state_t *state, scpi_bool_t *isRange, int32_t *valuesFrom, int32_t *valuesTo, size_t length, size_t *dimensions)
scpi_expr_result_t	SCPI_ExprChannelListEntry (scpi_t *context, scpi_parameter_t *param, int index, scpi_bool_t *isRange, int32_t *valuesFrom, int32_t *valuesTo, size_t length, size_t *dimensions)

Detailed Description

Expressions handling.

Definition in file expression.c.

Function Documentation

channelRange()

scpi_expr_result_t channelRange ( scpi_t * context, lex_state_t * state, scpi_bool_t * isRange, int32_t * valuesFrom, int32_t * valuesTo, size_t length, size_t * dimensions )

static

Parse channel_range e.g. "1!2:5!6"

Parameters

context
state	lexer state
isRange	return true if it is range
valuesFrom	return array of values from
valuesTo	return array of values to
length	length of values arrays
dimensions	real number of dimensions

Definition at line 225 of file expression.c.

channelSpec()

scpi_expr_result_t channelSpec ( scpi_t * context, lex_state_t * state, int32_t * values, size_t length, size_t * dimensions )

static

Parse one channel_spec e.g. "1!5!8"

Parameters

context
state	lexer state
values	range values
length	length of values array
dimensions	real number of dimensions

Definition at line 191 of file expression.c.

numericRange()

scpi_expr_result_t numericRange ( lex_state_t * state, scpi_bool_t * isRange, scpi_token_t * valueFrom, scpi_token_t * valueTo )

static

Parse one range or single value

Parameters

state	lexer state
isRange	return true if parsed expression is range
valueFrom	return parsed value from
valueTo	return parsed value to

Returns

SCPI_EXPR_OK - parsing was succesful SCPI_EXPR_ERROR - parser error SCPI_EXPR_NO_MORE - no more data

Definition at line 52 of file expression.c.

SCPI_ExprChannelListEntry()

scpi_expr_result_t SCPI_ExprChannelListEntry	(	scpi_t *	context,
		scpi_parameter_t *	param,
		int	index,
		scpi_bool_t *	isRange,
		int32_t *	valuesFrom,
		int32_t *	valuesTo,
		size_t	length,
		size_t *	dimensions )

Parse one list entry at specific position e.g. "1!2:5!6"

Parameters

context
param
index
isRange	return true if it is range
valuesFrom	return array of values from
valuesTo	return array of values to
length	length of values arrays
dimensions	real number of dimensions

Definition at line 266 of file expression.c.

SCPI_ExprNumericListEntry()

scpi_expr_result_t SCPI_ExprNumericListEntry	(	scpi_t *	context,
		scpi_parameter_t *	param,
		int	index,
		scpi_bool_t *	isRange,
		scpi_parameter_t *	valueFrom,
		scpi_parameter_t *	valueTo )

Parse entry on specified position

Parameters

context	scpi context
param	input parameter
index	index of position (start from 0)
isRange	return true if expression at index was range
valueFrom	return value from
valueTo	return value to

Returns

SCPI_EXPR_OK - parsing was succesful SCPI_EXPR_ERROR - parser error SCPI_EXPR_NO_MORE - no more data

See also

SCPI_ExprNumericListEntryInt, SCPI_ExprNumericListEntryDouble

Definition at line 83 of file expression.c.

SCPI_ExprNumericListEntryDouble()

scpi_expr_result_t SCPI_ExprNumericListEntryDouble	(	scpi_t *	context,
		scpi_parameter_t *	param,
		int	index,
		scpi_bool_t *	isRange,
		double *	valueFrom,
		double *	valueTo )

Parse entry on specified position and convert result to double

Parameters

context	scpi context
param	input parameter
index	index of position (start from 0)
isRange	return true if expression at index was range
valueFrom	return value from
valueTo	return value to

Returns

SCPI_EXPR_OK - parsing was succesful SCPI_EXPR_ERROR - parser error SCPI_EXPR_NO_MORE - no more data

See also

SCPI_ExprNumericListEntry, SCPI_ExprNumericListEntryInt

Definition at line 165 of file expression.c.

SCPI_ExprNumericListEntryInt()

scpi_expr_result_t SCPI_ExprNumericListEntryInt	(	scpi_t *	context,
		scpi_parameter_t *	param,
		int	index,
		scpi_bool_t *	isRange,
		int32_t *	valueFrom,
		int32_t *	valueTo )

Parse entry on specified position and convert result to int32_t

Parameters

context	scpi context
param	input parameter
index	index of position (start from 0)
isRange	return true if expression at index was range
valueFrom	return value from
valueTo	return value to

Returns

SCPI_EXPR_OK - parsing was succesful SCPI_EXPR_ERROR - parser error SCPI_EXPR_NO_MORE - no more data

See also

SCPI_ExprNumericListEntry, SCPI_ExprNumericListEntryDouble

Definition at line 134 of file expression.c.