pyraf.clscan

Module clscan

cl tokenizer/scanner using John Aycock's little languages (SPARK) framework

This version uses a context-sensitive pattern stack

$Id: clscan.py 783 2007-04-04 20:19:54Z rij $

R. White, 1999 September 10

Classes

[hide private]

_BasicScanner_1
Scanner class for tokens that can be recognized late

_BasicScanner_2
Scanner class for tokens that must be recognized before those defined in the _BasicScanner_1 class.

_BasicScanner_3
Scanner class for Tokens that must be recognized before those defined in the _BasicScanner_2 or _BasicScanner_1 classes.

_LaxScanner

_StartScanner_1

_StrictStartScanner
Strict scanner class for tokens recognized in start-line mode

_StartScanner
Scanner class for tokens recognized in start-line mode

_CommandScanner_1

_CommandScanner_2

_StrictCommandScanner
Strict scanner class for tokens recognized in command mode

_CommandScanner
Scanner class for tokens recognized in command mode

_ComputeStartScanner_1

_ComputeStartScanner_2

_StrictComputeStartScanner
Strict scanner class for tokens recognized in initial compute mode (similar to command mode)

_ComputeStartScanner
Scanner class for tokens recognized in initial compute mode (similar to command mode)

_ComputeEqnScanner_1

_ComputeEqnScanner_2

_StrictComputeEqnScanner
Strict scanner class for tokens recognized in compute equation mode

_ComputeEqnScanner
Scanner class for tokens recognized in compute mode

_ComputeScanner_1

_ComputeScanner_2

_StrictComputeScanner
Strict scanner class for tokens recognized in compute mode

_ComputeScanner
Scanner class for tokens recognized in compute mode

_StrictSwallowNewlineScanner
Strict scanner class where embedded newlines allowed

_SwallowNewlineScanner
Strict scanner class where embedded newlines allowed

_StrictAcceptRedirScanner
Strict scanner class where redirection is allowed

_AcceptRedirScanner
Scanner class where redirection is allowed

CLScanner
CL scanner class

Functions

[hide private]

filterEscapes(instr)
Turn all backslashes that aren't special character for IRAF into double backslashes

source code

_getScannerDict()

source code

_getStrictScannerDict()

source code

_countNewlines(s)
Return number of newlines in string

source code

scan(f)

source code

toklist(tlist, filename=None)

source code

Variables

[hide private]

_START_LINE_MODE = 0

_COMMAND_MODE = 1

_COMPUTE_START_MODE = 2

_COMPUTE_EQN_MODE = 3

_COMPUTE_MODE = 4

_SWALLOW_NEWLINE_MODE = 5

_ACCEPT_REDIR_MODE = 6

comment_pat = re.compile(r'\\\s*\n\s*#.*\n\s*')

special_escapes = re.compile(r'[\\\\]*(\\[^fnrt\\\'"\d])')

_keywordDict = {'begin': 1, 'break': 1, 'case': 1, 'default': ...

_typeDict = {'bool': 1, 'char': 1, 'file': 1, 'gcur': 1, 'imcu...

_boolDict = {'yes': 1, 'no': 1,}

_scannerDict = None

_strictScannerDict = None

Variables Details

[hide private]

_keywordDict

Value:

{'begin': 1, 'break': 1, 'case': 1, 'default': 1, 'else': 1, 'end': 1,
 'for': 1, 'goto': 1, 'if': 1, 'next': 1, 'procedure': 1, 'return': 1,
 'switch': 1, 'while': 1,}

_typeDict

Value:

{'bool': 1, 'char': 1, 'file': 1, 'gcur': 1, 'imcur': 1, 'int': 1, 'ps
et': 1, 'real': 1, 'string': 1, 'struct': 1, 'ukey': 1,}