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#!/usr/bin/env python
#coding=UTF-8
# Copyright © 2011 Intel Corporation
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Authors:
# Chen, Yangyang <yangyang.chen@intel.com>
# Han, Haofu <haofu.han@intel.com>
#
import sys
class Block:
def __init__(self, ln=0, s=None):
assert type(ln) == int
assert type(s) == str or s == None
self.lineno = ln
self.text = s
self.subblocks = []
def append(self, block):
self.subblocks.append(block)
def checkfor(self, line):
import re
p = r'\$\s*for\s*'
if re.match(p, line) == None:
raise Exception(self.__errmsg('syntax error'))
tail = line.split('(', 1)[1].rsplit(')', 1)
conds = tail[0].split(';')
lb = tail[1]
if lb.strip() != '{':
raise Exception(self.__errmsg('missing "{"'))
if len(conds) != 3:
raise Exception(self.__errmsg('syntax error(miss ";"?)'))
init = conds[0]
cond = conds[1]
step = conds[2]
self.__parse_init(init)
self.__parse_cond(cond)
self.__parse_step(step)
def __parse_init(self, init):
inits = init.split(',')
self.param_init = []
for ini in inits:
try:
val = eval(ini)
self.param_init.append(val)
except:
raise Exception(self.__errmsg('non an exp: %s'%ini))
self.param_num = len(inits)
def __parse_cond(self, cond):
cond = cond.strip()
if cond[0] in ['<', '>']:
if cond[1] == '=':
self.param_op = cond[:2]
limit = cond[2:]
else:
self.param_op = cond[0]
limit = cond[1:]
try:
self.param_limit = eval(limit)
except:
raise Exception(self.__errmsg('non an exp: %s'%limit))
else:
raise Exception(self.__errmsg('syntax error'))
def __parse_step(self, step):
steps = step.split(',')
if len(steps) != self.param_num:
raise Exception(self.__errmsg('params number no match'))
self.param_step = []
for st in steps:
try:
val = eval(st)
self.param_step.append(val)
except:
raise Exception(self.__errmsg('non an exp: %s'%st))
def __errmsg(self, msg=''):
return '%d: %s' % (self.lineno, msg)
def readlines(f):
lines = f.readlines()
buf = []
for line in lines:
if '\\n' in line:
tmp = line.split('\\n')
buf.extend(tmp)
else:
buf.append(line)
return buf
def parselines(lines):
root = Block(0)
stack = [root]
lineno = 0
for line in lines:
lineno += 1
line = line.strip()
if line.startswith('$'):
block = Block(lineno)
block.checkfor(line)
stack[-1].append(block)
stack.append(block)
elif line.startswith('}'):
stack.pop()
elif line and not line.startswith('#'):
stack[-1].append(Block(lineno, line))
return root
def writeblocks(outfile, blocks):
buf = []
def check_cond(op, cur, lim):
assert op in ['<', '>', '<=', '>=']
assert type(cur) == int
assert type(lim) == int
return eval('%d %s %d' % (cur, op, lim))
def do_writeblock(block, curs):
if block.text != None:
import re
p = r'\%(\d+)'
newline = block.text
params = set(re.findall(p, block.text))
for param in params:
index = int(param) - 1
if index >= len(curs):
raise Exception('%d: too many param(%%%d)'%(block.lineno, index+1))
newline = newline.replace('%%%d'%(index+1), str(curs[index]))
if newline and \
not newline.startswith('.') and \
not newline.endswith(':') and \
not newline.endswith(';'):
newline += ';'
buf.append(newline)
else:
for_curs = block.param_init
while check_cond(block.param_op, for_curs[0], block.param_limit):
for sblock in block.subblocks:
do_writeblock(sblock, for_curs)
for i in range(0, block.param_num):
for_curs[i] += block.param_step[i]
for block in blocks.subblocks:
do_writeblock(block, [])
outfile.write('\n'.join(buf))
outfile.write('\n')
if __name__ == '__main__':
argc = len(sys.argv)
if argc == 1:
print >>sys.stderr, 'no input file'
sys.exit(0)
try:
infile = open(sys.argv[1], 'r')
except IOError:
print >>sys.stderr, 'can not open %s' % sys.argv[1]
sys.exit(1)
if argc == 2:
outfile = sys.stdout
else:
try:
outfile = open(sys.argv[2], 'w')
except IOError:
print >>sys.stderr, 'can not write to %s' % sys.argv[2]
sys.exit(1)
lines = readlines(infile)
try:
infile.close()
except IOError:
pass
blocks = parselines(lines)
writeblocks(outfile, blocks)
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