#!/usr/bin/env python
"""

Build 'use others module data' mechanism for f2py2e.

Unfinished.

Copyright 2000 Pearu Peterson all rights reserved,
Pearu Peterson <pearu@ioc.ee>
Permission to use, modify, and distribute this software is given under the
terms of the NumPy License.

NO WARRANTY IS EXPRESSED OR IMPLIED.  USE AT YOUR OWN RISK.
$Date: 2000/09/10 12:35:43 $
Pearu Peterson

"""
from __future__ import division, absolute_import, print_function

__version__ = "$Revision: 1.3 $"[10:-1]

f2py_version='See `f2py -v`'

import pprint
import sys
errmess=sys.stderr.write
outmess=sys.stdout.write
show=pprint.pprint

from .auxfuncs import *
##############

usemodule_rules={
    'body':"""
#begintitle#
static char doc_#apiname#[] = \"\\\nVariable wrapper signature:\\n\\
\t #name# = get_#name#()\\n\\
Arguments:\\n\\
#docstr#\";
extern F_MODFUNC(#usemodulename#,#USEMODULENAME#,#realname#,#REALNAME#);
static PyObject *#apiname#(PyObject *capi_self, PyObject *capi_args) {
/*#decl#*/
\tif (!PyArg_ParseTuple(capi_args, \"\")) goto capi_fail;
printf(\"c: %d\\n\",F_MODFUNC(#usemodulename#,#USEMODULENAME#,#realname#,#REALNAME#));
\treturn Py_BuildValue(\"\");
capi_fail:
\treturn NULL;
}
""",
    'method':'\t{\"get_#name#\",#apiname#,METH_VARARGS|METH_KEYWORDS,doc_#apiname#},',
    'need':['F_MODFUNC']
    }

################

def buildusevars(m, r):
    ret={}
    outmess('\t\tBuilding use variable hooks for module "%s" (feature only for F90/F95)...\n'%(m['name']))
    varsmap={}
    revmap={}
    if 'map' in r:
        for k in r['map'].keys():
            if r['map'][k] in revmap:
                outmess('\t\t\tVariable "%s<=%s" is already mapped by "%s". Skipping.\n'%(r['map'][k], k, revmap[r['map'][k]]))
            else:
                revmap[r['map'][k]]=k
    if 'only' in r and r['only']:
        for v in r['map'].keys():
            if r['map'][v] in m['vars']:

                if revmap[r['map'][v]]==v:
                    varsmap[v]=r['map'][v]
                else:
                    outmess('\t\t\tIgnoring map "%s=>%s". See above.\n'%(v, r['map'][v]))
            else:
                outmess('\t\t\tNo definition for variable "%s=>%s". Skipping.\n'%(v, r['map'][v]))
    else:
        for v in m['vars'].keys():
            if v in revmap:
                varsmap[v]=revmap[v]
            else:
                varsmap[v]=v
    for v in varsmap.keys():
        ret=dictappend(ret, buildusevar(v, varsmap[v], m['vars'], m['name']))
    return ret
def buildusevar(name, realname, vars, usemodulename):
    outmess('\t\t\tConstructing wrapper function for variable "%s=>%s"...\n'%(name, realname))
    ret={}
    vrd={'name':name,
         'realname':realname,
         'REALNAME':realname.upper(),
         'usemodulename':usemodulename,
         'USEMODULENAME':usemodulename.upper(),
         'texname':name.replace('_', '\\_'),
         'begintitle':gentitle('%s=>%s'%(name, realname)),
         'endtitle':gentitle('end of %s=>%s'%(name, realname)),
         'apiname':'#modulename#_use_%s_from_%s'%(realname, usemodulename)
         }
    nummap={0:'Ro',1:'Ri',2:'Rii',3:'Riii',4:'Riv',5:'Rv',6:'Rvi',7:'Rvii',8:'Rviii',9:'Rix'}
    vrd['texnamename']=name
    for i in nummap.keys():
        vrd['texnamename']=vrd['texnamename'].replace(repr(i), nummap[i])
    if hasnote(vars[realname]): vrd['note']=vars[realname]['note']
    rd=dictappend({}, vrd)
    var=vars[realname]

    print(name, realname, vars[realname])
    ret=applyrules(usemodule_rules, rd)
    return ret
