DESCRIPTION

This syntax summary attempts to present all the built-in keywords, operators and commands of spec. The grammar rules listed below are very similar to those given in the standard manuals describing the C language. Operators are listed in order of precedence, with the highest precedence operators listed first.

The following terms are used:

lvalue

"left value", something that can go on the left side of the equals sign.

binop

binary operator (+, -, etc.)

asgnop

assignment operator (=, +=, etc.)

identifier

a variable

identifier-list

a space- or comma-separated list of identifiers

pattern

An alphanumeric string possibly containing the meta characters ? or *.

pattern-list-opt

An optional space-separated list of patterns.

expr-opt

an optional expression

expr-list-opt

an optional expression list

[;]

A semicolon or a newline. (A semicolon after a statement is optional if the statement is followed by a newline.)

EXPRESSIONS

expression:

lvalue

numeric-constant

string-constant

( expression )

function ( expression-list )

- expression

! expression

~ expression

++ lvalue

-- lvalue

lvalue ++

lvalue --

expression ? expression : expression

expression binop expression

lvalue asgnop expression

expression-list:

expression , expression

lvalue:

identifier

identifier [ expression ]

binop:

* /  %

+ -

>> <<

> <  <=  >=

== !=

&

^

|

&&

||

asgnop:

= +=  -=  *=  /=  %=  >>=  <<=  &=  ^=  |=

array_type:

byte

ubyte

short

ushort

long

ulong

float

double

string

array_decl:

[ array_type ] array identifier ] [ expr ]

[ array_type ] array identifier ] [ expr ] [ expr ]

array_decl-list:

array_decl [ , ] array_decl

Statements

compound-statement:

{ statement-list }

statement-list:

statement-list

statement statement-list

statement:

compound-statement

expression [ ; ]

if ( expression ) statement

if ( expression ) statement else statement

while ( expression ) statement

for ( expr-list-opt; expr-opt; expr-list-opt ) statement

for ( identifier in identifier ) statement

break [ ; ]

continue [ ; ]

exit [ ; ]

return expr-opt [ ; ]

history expr-opt [ ; ]

lscmd pattern-list-op [ ; ]

syms pattern-list-op [ ; ]

print expression-list [ ; ]

eprint expression-list [ ; ]

global identifier-list [ ; ]

constant identifier expression [ ; ]

unglobal identifier-list [ ; ]

local identifier-list [ ; ]

delete identifier [ expression ] [ ; ]

array_decl-list [ ; ]

local array_decl-list [ ; ]

global array_decl-list [ ; ]

shared array_decl-list [ ; ]

extern shared array_decl-list [ ; ]

def identifier string-constant [ ; ]

rdef identifier expression [ ; ]

undef identifier-list [ ; ]

prdef pattern-list-op [ ; ]

lsdef pattern-list-op [ ; ]

memstat [ ; ]

savstate [ ; ]

reconfig [ ; ]

getcounts [ ; ]

move_all [ ; ]

move_cnt [ ; ]

sync [ ; ]

quit [ ; ]

FUNCTIONS

0 or 1 arguments:

0 to 2 arguments:

date()

0 to 3 arguments:

unix()

1 argument:

1 or more arguments:

array_dump() array_op() array_plot() data_dump() data_plot() eprintf() printf() sock_io() sock_par() sprintf() vme_get() vme_get32()

1 or 2 arguments:

anka_par() ca_cntl() calc() dofile() em_io() eval() fbus_get() file_info() getline() getsval() getval() gpib_get() mca_sel() qdofile() read_motors() remote_poll() remote_stat() ser_get() sock_get() spec_par() whatis() yesno()

1 to 3 arguments:

epics_get() epics_put() mca_par()

1 to 4 arguments:

array_pipe() cdef() data_pipe() esrf_dc() mca_get() mca_put()

1 to 5 arguments:

esrf_io()

1 to 17 arguments:

fbus_put()

2 arguments:

array_read() atan2() ca_get() chg_offset() clone() data_info() dial() fmt_close() get_lim() gpib_cntl() image_get() image_put() index() port_put() port_putw() pow() prop_get() prop_watch() remote_cmd() remote_eval() user()

2 or more arguments:

array_fit() data_fit() fprintf() prop_send() sscanf() vme_move() vme_put() vme_put32()

2 or 3 arguments:

chg_dial() epics_par() esrf_db() gpib_put() remote_async() ser_par() ser_put() sock_put() split() substr() tty_move()

2 to 4 arguments:

counter_par() data_read() mca_spar() motor_par() plot_move()

2 to 5 arguments:

mca_sget() mca_sput()

2 to 6 arguments:

image_par()

3 arguments:

ca_put() data_get() data_grp() prop_put() set_lim()

3 or more arguments:

data_nput()

3 or 4 arguments:

anka_get() ca_fna()

3 to 5 arguments:

fmt_read() fmt_write()

4 arguments:

data_put() plot_range() tty_fmt()

4 or 5 arguments:

anka_put()

5 or 6 arguments:

data_uop()

6 or 7 arguments:

data_anal()

7 arguments:

data_bop()