X7ROOT File Manager
Current Path:
/usr/share/doc/python-ply-3.4/example/hedit
usr
/
share
/
doc
/
python-ply-3.4
/
example
/
hedit
/
📁
..
📄
hedit.py
(1.07 KB)
Editing: hedit.py
# ----------------------------------------------------------------------------- # hedit.py # # Paring of Fortran H Edit descriptions (Contributed by Pearu Peterson) # # These tokens can't be easily tokenized because they are of the following # form: # # nHc1...cn # # where n is a positive integer and c1 ... cn are characters. # # This example shows how to modify the state of the lexer to parse # such tokens # ----------------------------------------------------------------------------- import sys sys.path.insert(0,"../..") tokens = ( 'H_EDIT_DESCRIPTOR', ) # Tokens t_ignore = " \t\n" def t_H_EDIT_DESCRIPTOR(t): r"\d+H.*" # This grabs all of the remaining text i = t.value.index('H') n = eval(t.value[:i]) # Adjust the tokenizing position t.lexer.lexpos -= len(t.value) - (i+1+n) t.value = t.value[i+1:i+1+n] return t def t_error(t): print("Illegal character '%s'" % t.value[0]) t.lexer.skip(1) # Build the lexer import ply.lex as lex lex.lex() lex.runmain()
Upload File
Create Folder