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linker.py
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linker.py
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import os
from pyjs import linker
from pyjs import util
PLATFORM='pyv8'
APP_TEMPLATE = """
var $wnd = new Object();
$wnd.document = new Object();
var $doc = $wnd.document;
var $moduleName = "%(app_name)s";
var $pyjs = new Object();
var $p = null;
$pyjs.__modules__ = {};
$pyjs.modules = {};
$pyjs.modules_hash = {};
$pyjs.available_modules = %(available_modules)s;
$pyjs.loaded_modules = {};
$pyjs.options = new Object();
$pyjs.options.set_all = function (v) {
$pyjs.options.arg_ignore = v;
$pyjs.options.arg_count = v;
$pyjs.options.arg_is_instance = v;
$pyjs.options.arg_instance_type = v;
$pyjs.options.arg_kwarg_dup = v;
$pyjs.options.arg_kwarg_unexpected_keyword = v;
$pyjs.options.arg_kwarg_multiple_values = v;
};
$pyjs.options.set_all(true);
$pyjs.trackstack = [];
$pyjs.track = {module:'__main__', lineno: 1};
$pyjs.trackstack.push($pyjs.track);
$pyjs.__last_exception_stack__ = null;
$pyjs.__last_exception__ = null;
/*
* prepare app system vars
*/
$pyjs.platform = 'pyv8';
$pyjs.appname = %(app_name)r;
$pyjs.loadpath = './';
pyv8_load(%(module_files)s);
pyv8_load(%(js_lib_files)s);
/* late static js libs */
%(late_static_js_libs)s
//try {
$p = $pyjs.loaded_modules['pyjslib'];
$p('pyjslib');
$pyjs.__modules__.pyjslib = $p['pyjslib']
$pyjs.loaded_modules['pyjslib'].___import___('%(app_name)s', '%(app_name)s', '__main__');
//} catch(exception)
//{
// var fullMessage = exception.name + ': ' + exception.message;
// var uri = exception.fileName;
// //var stack = exception.stack;
// var line = exception.lineNumber;
// fullMessage += "\\n at " + uri + ": " + line;
// print (fullMessage );
// //print (stack.toString() );
//}
"""
def tostrlist(l):
l = map(lambda x: repr(x), l)
return "[%s]" % ', '.join(l)
class PyV8Linker(linker.BaseLinker):
"""PyV8 linker, which links together files by using the
load function of the spidermonkey shell."""
# we derive from mozilla
platform_parents = {
PLATFORM:['mozilla', 'array_extras']
}
def __init__(self, *args, **kwargs):
kwargs['platforms'] = [PLATFORM]
super(PyV8Linker, self).__init__(*args, **kwargs)
def visit_start(self):
super(PyV8Linker, self).visit_start()
self.js_libs.append('_pyjs.js')
self.merged_public = set()
def merge_resources(self, dir_name):
"""find the absolute paths of js includes"""
if not self.js_libs or dir_name in self.merged_public:
return
public_folder = os.path.join(dir_name, 'public')
if not os.path.isdir(public_folder):
return
for i, js_lib in enumerate(self.js_libs):
p = os.path.join(public_folder, js_lib)
if os.path.isfile(p):
self.js_libs[i] = p
def visit_end(self):
def static_code(libs, msg = None):
code = []
for lib in libs:
fname = lib
if not os.path.isfile(fname):
fname = os.path.join(self.output, lib)
if not os.path.isfile(fname):
raise RuntimeError('File not found %r' % lib)
if fname[len_ouput_dir:] == self.output:
name = fname[len_ouput_dir:]
else:
name = os.path.basename(lib)
if not msg is None:
code.append("/* start %s: %s */" % (msg, name))
f = file(fname)
code.append(f.read())
if not msg is None:
code.append("/* end %s */" % (name,))
self.remove_files[fname] = True
fname = fname.split('.')
if fname[-2] == '__%s__' % platform_name:
del fname[-2]
fname = '.'.join(fname)
if os.path.isfile(fname):
self.remove_files[fname] = True
return "\n".join(code)
done = self.done[PLATFORM]
# locals - go into template via locals()
module_files=tostrlist(done)
#print "module_files", module_files
js_lib_files=tostrlist(self.js_libs)
early_static_js_libs=str(self.js_libs)[1:-1]
late_static_js_libs = [] + self.late_static_js_libs
late_static_js_libs = static_code(late_static_js_libs, "javascript lib")
app_name = self.top_module
available_modules = self.visited_modules[PLATFORM]
self.out_file_mod = os.path.join(self.output, self.top_module + '.js')
out_file = open(self.out_file_mod , 'w')
out_file.write(APP_TEMPLATE % locals())
out_file.close()
add_linker_options = linker.add_linker_options