ref: 7c8d32ab48f53ff465f1aae8bc0ec45df49e23d5
dir: /waflib/Tools/d_scan.py/
#! /usr/bin/env python
# encoding: utf-8
# WARNING! Do not edit! http://waf.googlecode.com/git/docs/wafbook/single.html#_obtaining_the_waf_file
import re
from waflib import Utils,Logs
def filter_comments(filename):
txt=Utils.readf(filename)
i=0
buf=[]
max=len(txt)
begin=0
while i<max:
c=txt[i]
if c=='"'or c=="'":
buf.append(txt[begin:i])
delim=c
i+=1
while i<max:
c=txt[i]
if c==delim:break
elif c=='\\':
i+=1
i+=1
i+=1
begin=i
elif c=='/':
buf.append(txt[begin:i])
i+=1
if i==max:break
c=txt[i]
if c=='+':
i+=1
nesting=1
c=None
while i<max:
prev=c
c=txt[i]
if prev=='/'and c=='+':
nesting+=1
c=None
elif prev=='+'and c=='/':
nesting-=1
if nesting==0:break
c=None
i+=1
elif c=='*':
i+=1
c=None
while i<max:
prev=c
c=txt[i]
if prev=='*'and c=='/':break
i+=1
elif c=='/':
i+=1
while i<max and txt[i]!='\n':
i+=1
else:
begin=i-1
continue
i+=1
begin=i
buf.append(' ')
else:
i+=1
buf.append(txt[begin:])
return buf
class d_parser(object):
def __init__(self,env,incpaths):
self.allnames=[]
self.re_module=re.compile("module\s+([^;]+)")
self.re_import=re.compile("import\s+([^;]+)")
self.re_import_bindings=re.compile("([^:]+):(.*)")
self.re_import_alias=re.compile("[^=]+=(.+)")
self.env=env
self.nodes=[]
self.names=[]
self.incpaths=incpaths
def tryfind(self,filename):
found=0
for n in self.incpaths:
found=n.find_resource(filename.replace('.','/')+'.d')
if found:
self.nodes.append(found)
self.waiting.append(found)
break
if not found:
if not filename in self.names:
self.names.append(filename)
def get_strings(self,code):
self.module=''
lst=[]
mod_name=self.re_module.search(code)
if mod_name:
self.module=re.sub('\s+','',mod_name.group(1))
import_iterator=self.re_import.finditer(code)
if import_iterator:
for import_match in import_iterator:
import_match_str=re.sub('\s+','',import_match.group(1))
bindings_match=self.re_import_bindings.match(import_match_str)
if bindings_match:
import_match_str=bindings_match.group(1)
matches=import_match_str.split(',')
for match in matches:
alias_match=self.re_import_alias.match(match)
if alias_match:
match=alias_match.group(1)
lst.append(match)
return lst
def start(self,node):
self.waiting=[node]
while self.waiting:
nd=self.waiting.pop(0)
self.iter(nd)
def iter(self,node):
path=node.abspath()
code="".join(filter_comments(path))
names=self.get_strings(code)
for x in names:
if x in self.allnames:continue
self.allnames.append(x)
self.tryfind(x)
def scan(self):
env=self.env
gruik=d_parser(env,self.generator.includes_nodes)
node=self.inputs[0]
gruik.start(node)
nodes=gruik.nodes
names=gruik.names
if Logs.verbose:
Logs.debug('deps: deps for %s: %r; unresolved %r'%(str(node),nodes,names))
return(nodes,names)