318 lines
13 KiB
Python
318 lines
13 KiB
Python
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# Note: Work in progress
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from __future__ import absolute_import
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import os
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import os.path
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import re
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import codecs
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import textwrap
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from datetime import datetime
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from functools import partial
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from collections import defaultdict
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from xml.sax.saxutils import escape as html_escape
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try:
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from StringIO import StringIO
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except ImportError:
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from io import StringIO # does not support writing 'str' in Py2
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from . import Version
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from .Code import CCodeWriter
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from .. import Utils
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class AnnotationCCodeWriter(CCodeWriter):
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def __init__(self, create_from=None, buffer=None, copy_formatting=True):
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CCodeWriter.__init__(self, create_from, buffer, copy_formatting=copy_formatting)
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if create_from is None:
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self.annotation_buffer = StringIO()
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self.last_annotated_pos = None
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# annotations[filename][line] -> [(column, AnnotationItem)*]
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self.annotations = defaultdict(partial(defaultdict, list))
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# code[filename][line] -> str
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self.code = defaultdict(partial(defaultdict, str))
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# scopes[filename][line] -> set(scopes)
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self.scopes = defaultdict(partial(defaultdict, set))
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else:
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# When creating an insertion point, keep references to the same database
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self.annotation_buffer = create_from.annotation_buffer
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self.annotations = create_from.annotations
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self.code = create_from.code
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self.scopes = create_from.scopes
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self.last_annotated_pos = create_from.last_annotated_pos
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def create_new(self, create_from, buffer, copy_formatting):
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return AnnotationCCodeWriter(create_from, buffer, copy_formatting)
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def write(self, s):
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CCodeWriter.write(self, s)
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self.annotation_buffer.write(s)
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def mark_pos(self, pos, trace=True):
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if pos is not None:
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CCodeWriter.mark_pos(self, pos, trace)
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if self.funcstate and self.funcstate.scope:
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# lambdas and genexprs can result in multiple scopes per line => keep them in a set
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self.scopes[pos[0].filename][pos[1]].add(self.funcstate.scope)
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if self.last_annotated_pos:
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source_desc, line, _ = self.last_annotated_pos
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pos_code = self.code[source_desc.filename]
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pos_code[line] += self.annotation_buffer.getvalue()
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self.annotation_buffer = StringIO()
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self.last_annotated_pos = pos
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def annotate(self, pos, item):
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self.annotations[pos[0].filename][pos[1]].append((pos[2], item))
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def _css(self):
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"""css template will later allow to choose a colormap"""
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css = [self._css_template]
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for i in range(255):
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color = u"FFFF%02x" % int(255/(1+i/10.0))
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css.append('.cython.score-%d {background-color: #%s;}' % (i, color))
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try:
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from pygments.formatters import HtmlFormatter
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except ImportError:
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pass
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else:
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css.append(HtmlFormatter().get_style_defs('.cython'))
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return '\n'.join(css)
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_css_template = textwrap.dedent("""
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body.cython { font-family: courier; font-size: 12; }
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.cython.tag { }
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.cython.line { margin: 0em }
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.cython.code { font-size: 9; color: #444444; display: none; margin: 0px 0px 0px 8px; border-left: 8px none; }
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.cython.line .run { background-color: #B0FFB0; }
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.cython.line .mis { background-color: #FFB0B0; }
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.cython.code.run { border-left: 8px solid #B0FFB0; }
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.cython.code.mis { border-left: 8px solid #FFB0B0; }
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.cython.code .py_c_api { color: red; }
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.cython.code .py_macro_api { color: #FF7000; }
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.cython.code .pyx_c_api { color: #FF3000; }
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.cython.code .pyx_macro_api { color: #FF7000; }
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.cython.code .refnanny { color: #FFA000; }
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.cython.code .trace { color: #FFA000; }
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.cython.code .error_goto { color: #FFA000; }
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.cython.code .coerce { color: #008000; border: 1px dotted #008000 }
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.cython.code .py_attr { color: #FF0000; font-weight: bold; }
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.cython.code .c_attr { color: #0000FF; }
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.cython.code .py_call { color: #FF0000; font-weight: bold; }
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.cython.code .c_call { color: #0000FF; }
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""")
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# on-click toggle function to show/hide C source code
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_onclick_attr = ' onclick="{0}"'.format((
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"(function(s){"
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" s.display = s.display === 'block' ? 'none' : 'block'"
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"})(this.nextElementSibling.style)"
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).replace(' ', '') # poor dev's JS minification
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)
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def save_annotation(self, source_filename, target_filename, coverage_xml=None):
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with Utils.open_source_file(source_filename) as f:
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code = f.read()
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generated_code = self.code.get(source_filename, {})
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c_file = Utils.decode_filename(os.path.basename(target_filename))
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html_filename = os.path.splitext(target_filename)[0] + ".html"
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with codecs.open(html_filename, "w", encoding="UTF-8") as out_buffer:
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out_buffer.write(self._save_annotation(code, generated_code, c_file, source_filename, coverage_xml))
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def _save_annotation_header(self, c_file, source_filename, coverage_timestamp=None):
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coverage_info = ''
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if coverage_timestamp:
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coverage_info = u' with coverage data from {timestamp}'.format(
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timestamp=datetime.fromtimestamp(int(coverage_timestamp) // 1000))
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outlist = [
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textwrap.dedent(u'''\
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<!DOCTYPE html>
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<!-- Generated by Cython {watermark} -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Cython: {filename}</title>
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<style type="text/css">
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{css}
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</style>
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</head>
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<body class="cython">
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<p><span style="border-bottom: solid 1px grey;">Generated by Cython {watermark}</span>{more_info}</p>
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<p>
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<span style="background-color: #FFFF00">Yellow lines</span> hint at Python interaction.<br />
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Click on a line that starts with a "<code>+</code>" to see the C code that Cython generated for it.
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</p>
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''').format(css=self._css(), watermark=Version.watermark,
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filename=os.path.basename(source_filename) if source_filename else '',
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more_info=coverage_info)
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]
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if c_file:
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outlist.append(u'<p>Raw output: <a href="%s">%s</a></p>\n' % (c_file, c_file))
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return outlist
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def _save_annotation_footer(self):
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return (u'</body></html>\n',)
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def _save_annotation(self, code, generated_code, c_file=None, source_filename=None, coverage_xml=None):
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"""
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lines : original cython source code split by lines
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generated_code : generated c code keyed by line number in original file
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target filename : name of the file in which to store the generated html
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c_file : filename in which the c_code has been written
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"""
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if coverage_xml is not None and source_filename:
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coverage_timestamp = coverage_xml.get('timestamp', '').strip()
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covered_lines = self._get_line_coverage(coverage_xml, source_filename)
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else:
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coverage_timestamp = covered_lines = None
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annotation_items = dict(self.annotations[source_filename])
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scopes = dict(self.scopes[source_filename])
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outlist = []
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outlist.extend(self._save_annotation_header(c_file, source_filename, coverage_timestamp))
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outlist.extend(self._save_annotation_body(code, generated_code, annotation_items, scopes, covered_lines))
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outlist.extend(self._save_annotation_footer())
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return ''.join(outlist)
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def _get_line_coverage(self, coverage_xml, source_filename):
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coverage_data = None
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for entry in coverage_xml.iterfind('.//class'):
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if not entry.get('filename'):
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continue
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if (entry.get('filename') == source_filename or
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os.path.abspath(entry.get('filename')) == source_filename):
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coverage_data = entry
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break
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elif source_filename.endswith(entry.get('filename')):
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coverage_data = entry # but we might still find a better match...
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if coverage_data is None:
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return None
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return dict(
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(int(line.get('number')), int(line.get('hits')))
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for line in coverage_data.iterfind('lines/line')
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)
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def _htmlify_code(self, code):
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try:
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from pygments import highlight
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from pygments.lexers import CythonLexer
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from pygments.formatters import HtmlFormatter
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except ImportError:
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# no Pygments, just escape the code
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return html_escape(code)
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html_code = highlight(
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code, CythonLexer(stripnl=False, stripall=False),
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HtmlFormatter(nowrap=True))
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return html_code
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def _save_annotation_body(self, cython_code, generated_code, annotation_items, scopes, covered_lines=None):
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outlist = [u'<div class="cython">']
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pos_comment_marker = u'/* \N{HORIZONTAL ELLIPSIS} */\n'
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new_calls_map = dict(
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(name, 0) for name in
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'refnanny trace py_macro_api py_c_api pyx_macro_api pyx_c_api error_goto'.split()
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).copy
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self.mark_pos(None)
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def annotate(match):
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group_name = match.lastgroup
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calls[group_name] += 1
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return u"<span class='%s'>%s</span>" % (
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group_name, match.group(group_name))
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lines = self._htmlify_code(cython_code).splitlines()
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lineno_width = len(str(len(lines)))
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if not covered_lines:
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covered_lines = None
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for k, line in enumerate(lines, 1):
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try:
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c_code = generated_code[k]
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except KeyError:
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c_code = ''
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else:
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c_code = _replace_pos_comment(pos_comment_marker, c_code)
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if c_code.startswith(pos_comment_marker):
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c_code = c_code[len(pos_comment_marker):]
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c_code = html_escape(c_code)
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calls = new_calls_map()
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c_code = _parse_code(annotate, c_code)
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score = (5 * calls['py_c_api'] + 2 * calls['pyx_c_api'] +
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calls['py_macro_api'] + calls['pyx_macro_api'])
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if c_code:
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onclick = self._onclick_attr
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expandsymbol = '+'
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else:
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onclick = ''
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expandsymbol = ' '
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covered = ''
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if covered_lines is not None and k in covered_lines:
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hits = covered_lines[k]
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if hits is not None:
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covered = 'run' if hits else 'mis'
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outlist.append(
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u'<pre class="cython line score-{score}"{onclick}>'
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# generate line number with expand symbol in front,
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# and the right number of digit
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u'{expandsymbol}<span class="{covered}">{line:0{lineno_width}d}</span>: {code}</pre>\n'.format(
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score=score,
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expandsymbol=expandsymbol,
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covered=covered,
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lineno_width=lineno_width,
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line=k,
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code=line.rstrip(),
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onclick=onclick,
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))
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if c_code:
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outlist.append(u"<pre class='cython code score-{score} {covered}'>{code}</pre>".format(
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score=score, covered=covered, code=c_code))
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outlist.append(u"</div>")
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return outlist
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_parse_code = re.compile((
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br'(?P<refnanny>__Pyx_X?(?:GOT|GIVE)REF|__Pyx_RefNanny[A-Za-z]+)|'
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br'(?P<trace>__Pyx_Trace[A-Za-z]+)|'
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br'(?:'
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br'(?P<pyx_macro_api>__Pyx_[A-Z][A-Z_]+)|'
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br'(?P<pyx_c_api>(?:__Pyx_[A-Z][a-z_][A-Za-z_]*)|__pyx_convert_[A-Za-z_]*)|'
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br'(?P<py_macro_api>Py[A-Z][a-z]+_[A-Z][A-Z_]+)|'
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br'(?P<py_c_api>Py[A-Z][a-z]+_[A-Z][a-z][A-Za-z_]*)'
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br')(?=\()|' # look-ahead to exclude subsequent '(' from replacement
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br'(?P<error_goto>(?:(?<=;) *if [^;]* +)?__PYX_ERR\([^)]+\))'
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).decode('ascii')).sub
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_replace_pos_comment = re.compile(
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# this matches what Cython generates as code line marker comment
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br'^\s*/\*(?:(?:[^*]|\*[^/])*\n)+\s*\*/\s*\n'.decode('ascii'),
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re.M
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).sub
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class AnnotationItem(object):
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def __init__(self, style, text, tag="", size=0):
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self.style = style
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self.text = text
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self.tag = tag
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self.size = size
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def start(self):
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return u"<span class='cython tag %s' title='%s'>%s" % (self.style, self.text, self.tag)
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def end(self):
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return self.size, u"</span>"
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