354 lines
12 KiB
Python
354 lines
12 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Contains the worker classes/functions executed on the server side.
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"""
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import logging
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import os
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import tempfile
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import jedi
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def _logger():
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"""
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Returns the module's logger
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"""
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return logging.getLogger(__name__)
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def calltips(request_data):
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"""
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Worker that returns a list of calltips.
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A calltips is a tuple made of the following parts:
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- module_name: name of the module of the function invoked
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- call_name: name of the function that is being called
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- params: the list of parameter names.
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- index: index of the current parameter
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- bracket_start
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:returns tuple(module_name, call_name, params)
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"""
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code = request_data['code']
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line = request_data['line'] + 1
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column = request_data['column']
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path = request_data['path']
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# encoding = request_data['encoding']
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encoding = 'utf-8'
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# use jedi to get call signatures
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script = jedi.Script(code, line, column, path, encoding)
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signatures = script.call_signatures()
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for sig in signatures:
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results = (str(sig.module_name), str(sig.name),
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[p.description for p in sig.params], sig.index,
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sig.bracket_start, column)
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# todo: add support for multiple signatures, for that we need a custom
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# widget for showing calltips.
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return results
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return []
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def goto_assignments(request_data):
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"""
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Go to assignements worker.
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"""
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code = request_data['code']
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line = request_data['line'] + 1
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column = request_data['column']
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path = request_data['path']
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# encoding = request_data['encoding']
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encoding = 'utf-8'
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script = jedi.Script(code, line, column, path, encoding)
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try:
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definitions = script.goto_assignments()
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except jedi.NotFoundError:
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pass
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else:
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ret_val = [(d.module_path, d.line - 1 if d.line else None,
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d.column, d.full_name)
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for d in definitions]
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return ret_val
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_old_definitions = {}
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class Definition(object):
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"""
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Represents a defined name in a python source code (import, function, class,
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method). Definition usually form a tree limited to 2 levels (we stop at the
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method level).
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"""
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def __init__(self, name='', icon='', line=1, column=0, full_name=''):
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#: Icon resource name associated with the definition, can be None
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self.icon = icon
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#: Definition name (name of the class, method, variable)
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self.name = name
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#: The line of the definition in the current editor text
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self.line = line
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#: The column of the definition in the current editor text
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self.column = column
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#: Symbol name + parent name (for methods and class variables)
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self.full_name = full_name
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#: Possible list of children (only classes have children)
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self.children = []
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if self.full_name == "":
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self.full_name = self.name
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def add_child(self, definition):
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"""
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Adds a child definition
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"""
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self.children.append(definition)
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def to_dict(self):
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"""
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Serialises a definition to a dictionary, ready for json.
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Children are serialised recursively.
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"""
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ddict = {'name': self.name, 'icon': self.icon,
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'line': self.line, 'column': self.column,
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'full_name': self.full_name, 'children': []}
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for child in self.children:
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ddict['children'].append(child.to_dict())
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return ddict
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def from_dict(self, ddict):
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"""
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Deserialise the definition from a simple dict.
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"""
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self.name = ddict['name']
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self.icon = ddict['icon']
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self.line = ddict['line']
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self.column = ddict['column']
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self.full_name = ddict['full_name']
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self.children[:] = []
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for child_dict in ddict['children']:
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self.children.append(Definition().from_dict(child_dict))
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return self
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def __repr__(self):
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return 'Definition(%r, %r, %r, %r)' % (self.name, self.icon,
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self.line, self.column)
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def _extract_def(d):
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d_line, d_column = d.start_pos
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# use full name for import type
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if d.type == 'function':
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try:
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params = [p.name for p in d.params]
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name = d.name + '(' + ', '.join(params) + ')'
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except AttributeError:
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name = d.name
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else:
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name = d.name
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definition = Definition(name, icon_from_typename(d.name, d.type),
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d_line - 1, d_column, d.full_name)
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# check for methods in class or nested methods/classes
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if d.type == "class" or d.type == 'function':
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try:
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sub_definitions = d.defined_names()
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for sub_d in sub_definitions:
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if (d.type == 'function' and sub_d.type == 'function') or \
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d.type == 'class':
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definition.add_child(_extract_def(sub_d))
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except AttributeError:
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pass
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return definition
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def defined_names(request_data):
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"""
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Returns the list of defined names for the document.
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"""
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global _old_definitions
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ret_val = []
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path = request_data['path']
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toplvl_definitions = jedi.defined_names(
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request_data['code'], path, 'utf-8')
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for d in toplvl_definitions:
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definition = _extract_def(d)
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if d.type != 'import':
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ret_val.append(definition)
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_logger().debug("Document structure changed %s")
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ret_val = [d.to_dict() for d in ret_val]
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return ret_val
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def quick_doc(request_data):
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"""
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Worker that returns the documentation of the symbol under cursor.
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"""
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code = request_data['code']
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line = request_data['line'] + 1
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column = request_data['column']
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path = request_data['path']
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# encoding = 'utf-8'
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encoding = 'utf-8'
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script = jedi.Script(code, line, column, path, encoding)
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try:
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definitions = script.goto_definitions()
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except jedi.NotFoundError:
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return []
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else:
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ret_val = [d.doc for d in definitions]
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return ret_val
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def run_pep8(request_data):
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"""
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Worker that run the pep8 tool on the current editor text.
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:returns a list of tuples (msg, msg_type, line_number)
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"""
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import pep8
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from pyqode.python.backend.pep8utils import CustomChecker
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WARNING = 1
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code = request_data['code']
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path = request_data['path']
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# setup our custom style guide with our custom checker which returns a list
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# of strings instread of spitting the results at stdout
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pep8style = pep8.StyleGuide(parse_argv=False, config_file=True,
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checker_class=CustomChecker)
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try:
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results = pep8style.input_file(path, lines=code.splitlines(True))
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except Exception:
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_logger().exception('Failed to run PEP8 analysis with data=%r'
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% request_data)
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return []
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else:
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messages = []
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for line_number, offset, code, text, doc in results:
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messages.append(('[PEP8] %s' % text, WARNING, line_number - 1))
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return messages
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def run_frosted(request_data):
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"""
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Worker that run a frosted (the fork of pyflakes) code analysis on the
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current editor text.
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"""
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global prev_results
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from frosted import checker
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import _ast
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WARNING = 1
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ERROR = 2
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ret_val = []
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code = request_data['code']
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path = request_data['path']
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encoding = request_data['encoding']
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if not encoding:
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encoding = 'utf-8'
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if not path:
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path = os.path.join(tempfile.gettempdir(), 'temp.py')
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if not code:
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return []
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else:
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# First, compile into an AST and handle syntax errors.
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try:
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tree = compile(code.encode(encoding), path, "exec",
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_ast.PyCF_ONLY_AST)
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except SyntaxError as value:
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msg = '[pyFlakes] %s' % value.args[0]
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(lineno, offset, text) = value.lineno - 1, value.offset, value.text
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# If there's an encoding problem with the file, the text is None
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if text is None:
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# Avoid using msg, since for the only known case, it
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# contains a bogus message that claims the encoding the
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# file declared was unknown.s
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_logger().warning("[SyntaxError] %s: problem decoding source",
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path)
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else:
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ret_val.append((msg, ERROR, lineno))
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else:
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# Okay, it's syntactically valid. Now check it.
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w = checker.Checker(tree, os.path.split(path)[1])
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w.messages.sort(key=lambda m: m.lineno)
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for warning in w.messages:
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msg = "[pyFlakes] %s: %s" % (
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warning.type.error_code, warning.message.split(':')[-1])
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line = warning.lineno - 1
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status = (WARNING if warning.type.error_code.startswith('W')
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else ERROR)
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ret_val.append((msg, status, line))
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prev_results = ret_val
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return ret_val
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def icon_from_typename(name, icon_type):
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"""
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Returns the icon resource filename that corresponds to the given typename.
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:param name: name of the completion. Use to make the distinction between
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public and private completions (using the count of starting '_')
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:pram typename: the typename reported by jedi
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:returns: The associate icon resource filename or None.
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"""
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ICONS = {'CLASS': ':/pyqode_python_icons/rc/class.png',
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'IMPORT': ':/pyqode_python_icons/rc/namespace.png',
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'STATEMENT': ':/pyqode_python_icons/rc/var.png',
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'FORFLOW': ':/pyqode_python_icons/rc/var.png',
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'MODULE': ':/pyqode_python_icons/rc/namespace.png',
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'KEYWORD': ':/pyqode_python_icons/rc/keyword.png',
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'PARAM': ':/pyqode_python_icons/rc/var.png',
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'ARRAY': ':/pyqode_python_icons/rc/var.png',
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'INSTANCEELEMENT': ':/pyqode_python_icons/rc/var.png',
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'INSTANCE': ':/pyqode_python_icons/rc/var.png',
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'PARAM-PRIV': ':/pyqode_python_icons/rc/var.png',
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'PARAM-PROT': ':/pyqode_python_icons/rc/var.png',
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'FUNCTION': ':/pyqode_python_icons/rc/func.png',
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'DEF': ':/pyqode_python_icons/rc/func.png',
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'FUNCTION-PRIV': ':/pyqode_python_icons/rc/func_priv.png',
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'FUNCTION-PROT': ':/pyqode_python_icons/rc/func_prot.png'}
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ret_val = None
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icon_type = icon_type.upper()
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# jedi 0.8 introduced NamedPart class, which have a string instead of being
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# one
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if hasattr(name, "string"):
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name = name.string
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if icon_type == "FORFLOW" or icon_type == "STATEMENT":
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icon_type = "PARAM"
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if icon_type == "PARAM" or icon_type == "FUNCTION":
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if name.startswith("__"):
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icon_type += "-PRIV"
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elif name.startswith("_"):
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icon_type += "-PROT"
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if icon_type in ICONS:
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ret_val = ICONS[icon_type]
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elif icon_type:
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_logger().warning("Unimplemented completion icon_type: %s", icon_type)
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return ret_val
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class JediCompletionProvider:
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"""
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Provides code completion using the awesome `jedi`_ library
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.. _`jedi`: https://github.com/davidhalter/jedi
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"""
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@staticmethod
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def complete(code, line, column, path, encoding, prefix):
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"""
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Completes python code using `jedi`_.
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:returns: a list of completion.
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"""
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ret_val = []
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try:
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script = jedi.Script(code, line + 1, column, path, encoding)
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completions = script.completions()
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print('completions: %r' % completions)
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except jedi.NotFoundError:
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completions = []
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for completion in completions:
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ret_val.append({
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'name': completion.name,
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'icon': icon_from_typename(
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completion.name, completion.type),
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'tooltip': completion.description})
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return ret_val
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