src.templates.gderived.py Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jython Show documentation
Show all versions of jython Show documentation
Jython is an implementation of the high-level, dynamic, object-oriented
language Python written in 100% Pure Java, and seamlessly integrated with
the Java platform. It thus allows you to run Python on any Java platform.
# copyright 2004-2005 Samuele Pedroni
import sys
import os
import re
scriptdir = os.path.dirname(__file__)
import directives
import java_parser
import java_templating
from java_templating import JavaTemplate,jast_make,jast
org_python_dir = os.path.join(os.path.dirname(os.path.abspath(scriptdir)),
'org', 'python')
core_dir = os.path.join(org_python_dir, 'core')
DERIVED_HEADER = """\
/* Generated file, do not modify. See jython/src/templates/gderived.py. */
package org.python.%s;
import java.io.Serializable;
import org.python.core.*;"""
modif_re = re.compile(r"(?:\((\w+)\))?(\w+)")
# os.path.samefile unavailable on Windows before Python v3.2
if hasattr(os.path,"samefile"):
# Good: available on this platform
os_path_samefile = os.path.samefile
else:
def os_path_samefile(a,b):
'Files are considered the same if their absolute paths are equal'
return os.path.abspath(a)==os.path.abspath(b)
class Gen:
priority_order = ['require','define','base_class',
'want_dict',
'ctr',
'incl',
'unary1',
'binary', 'ibinary',
'rest',
'no_toString'
]
def __init__(self,bindings=None,priority_order=None):
if bindings is None:
self.global_bindings = { 'csub': java_templating.csub,
'concat': java_templating.concat,
'strfy': java_templating.strfy }
else:
self.global_bindings = bindings
if priority_order:
self.priority_order = priority_order
self.decls = JavaTemplate("")
self.auxiliary = None
self.base_class = None
self.want_dict = None
self.no_toString = False
self.ctr_done = 0
def debug(self,bindings):
for name,val in bindings.items():
if isinstance(val,JavaTemplate):
print "%s:" % name
print val.texpand({})
def invalid(self,dire,value):
raise Exception,"invalid '%s': %s" % (dire,value)
def get_aux(self,name):
if self.auxiliary is None:
aux_gen = Gen(priority_order=['require','define'])
directives.execute(directives.load(os.path.join(scriptdir,'gderived-defs')),aux_gen)
self.auxiliary = aux_gen.global_bindings
return self.auxiliary[name]
def dire_require(self,name,parm,body):
if body is not None:
self.invalid('require','non-empty body')
sub_gen = Gen(bindings=self.global_bindings, priority__order=['require','define'])
directives.execute(directives.load(parm.strip()),sub_gen)
def dire_define(self,name,parm,body):
parms = parm.split()
if not parms:
self.invalid('define',parm)
parsed_name = modif_re.match(parms[0])
if not parsed_name:
self.invalid('define',parm)
templ_kind = parsed_name.group(1)
templ_name = parsed_name.group(2)
if templ_kind is None:
templ_kind = 'Fragment'
templ = JavaTemplate(body,
parms=':'.join(parms[1:]),
bindings = self.global_bindings,
start = templ_kind)
self.global_bindings[templ_name] = templ
def dire_base_class(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
if self.base_class is None:
self.base_class = JavaTemplate(parm.strip())
self.global_bindings['base'] = self.base_class
def dire_want_dict(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
if self.want_dict is None:
self.want_dict = {"true": 1, "false": 0}[parm.strip()]
def dire_no_toString(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
self.no_toString = True
def dire_incl(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
directives.execute(directives.load(parm.strip()+'.derived'),self)
def dire_ctr(self,name,parm,body):
if self.ctr_done:
return
if body is not None:
self.invalid(name,"non-empty body")
if self.want_dict:
self.add_decl(self.get_aux('userdict'))
ctr = self.get_aux('ctr_userdict')
else:
ctr = self.get_aux('ctr')
extraargs = JavaTemplate(parm.strip(),start="FormalParameterListOpt")
def visit(node):
if isinstance(node, jast.VariableDeclaratorId):
yield node.Identifier
elif hasattr(node, 'children'):
for child in node.children:
for x in visit(child):
yield x
extra = jast_make(jast.Expressions, [jast_make(jast.Primary,Identifier=x,ArgumentsOpt=None) for x in visit(extraargs.fragment)])
extra = JavaTemplate(extra)
self.add_decl(ctr.tbind({'base': self.base_class, 'extraargs': extraargs, 'extra': extra}))
self.ctr_done = 1
def add_decl(self,templ):
pair = self.get_aux('pair')
self.decls = pair.tbind({'trailer': self.decls, 'last': templ})
def dire_unary1(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
parms = parm.split()
if len(parms) not in (1,2,3):
self.invalid(name,parm)
meth_name = parms[0]
if len(parms) == 1:
unary_body = self.get_aux('unary')
self.add_decl(unary_body.tbind({'unary': JavaTemplate(meth_name)}))
else:
rettype_name = parms[1]
if len(parms) == 3:
rettype_class = parms[2]
else:
rettype_class = 'Py'+rettype_name[0].upper()+rettype_name[1:]
unary_body = self.get_aux('typed_unary')
self.add_decl(unary_body.tbind({'unary': JavaTemplate(meth_name),
'rettype_name':
JavaTemplate(java_parser.make_qualid(rettype_name)),
'rettype': JavaTemplate(rettype_class)}))
def dire_binary(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
meth_names = parm.split()
binary_body = self.get_aux('binary')
for meth_name in meth_names:
self.add_decl(binary_body.tbind({'binary': JavaTemplate(meth_name)}))
def dire_ibinary(self,name,parm,body):
if body is not None:
self.invalid(name,'non-empty body')
meth_names = parm.split()
binary_body = self.get_aux('ibinary')
for meth_name in meth_names:
self.add_decl(binary_body.tbind({'binary': JavaTemplate(meth_name)}))
def dire_rest(self,name,parm,body):
if parm:
self.invalid(name,'non-empty parm')
if body is None:
return
self.add_decl(JavaTemplate(body,start='ClassBodyDeclarations'))
def generate(self):
if not self.no_toString:
self.add_decl(self.get_aux('toString'))
derived_templ = self.get_aux('derived_class')
return derived_templ.texpand({'base': self.base_class, 'decls': self.decls })
def process(fn, outfile, lazy=False):
if lazy and os.stat(fn).st_mtime < os.stat(outfile).st_mtime:
return
print 'Processing %s into %s' % (fn, outfile)
gen = Gen()
directives.execute(directives.load(fn),gen)
result = gen.generate()
result = hack_derived_header(outfile, result)
print >> open(outfile, 'w'), result
#gen.debug()
def hack_derived_header(fn, result):
"""Fix the package and import headers for derived classes outside of
org.python.core
"""
parent = os.path.dirname(fn)
if os_path_samefile(parent, core_dir):
return result
print 'Fixing header for: %s' % fn
dirs = []
while True:
parent, tail = os.path.split(parent)
dirs.insert(0, tail)
if os_path_samefile(parent, org_python_dir) or not tail:
break
result = result.splitlines()
for num, line in enumerate(result):
if line.startswith('public class '):
header = DERIVED_HEADER % '.'.join(dirs)
result[0:num - 1] = header.splitlines()
break
return '\n'.join(result)
if __name__ == '__main__':
from gexpose import load_mappings, usage
lazy = False
if len(sys.argv) > 4:
usage()
sys.exit(1)
if len(sys.argv) >= 2:
if '--help' in sys.argv:
usage()
sys.exit(0)
elif '--lazy' in sys.argv:
lazy = True
sys.argv.remove('--lazy')
if len(sys.argv) == 1:
for template, mapping in load_mappings().items():
if template.endswith('derived'):
process(mapping[0], mapping[1], lazy)
elif len(sys.argv) == 2:
mapping = load_mappings()[sys.argv[1]]
process(mapping[0], mapping[1], lazy)
else:
process(sys.argv[1], sys.argv[2], lazy)