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101 lines
3.7 KiB
101 lines
3.7 KiB
#
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# Copyright (C) 2016 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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"""Generates coverage reports using outputs from GCC.
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The GenerateCoverageReport() function returns HTML to display the coverage
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at each line of code in a provided source file. Coverage information is
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parsed from .gcno and .gcda file contents and combined with the source file
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to reconstruct a coverage report. GenerateLineCoverageVector() is a helper
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function that produces a vector of line counts and GenerateCoverageHTML()
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uses the vector and source to produce the HTML coverage report.
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"""
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import cgi
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import io
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import logging
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import os
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from vts.utils.python.coverage import gcda_parser
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from vts.utils.python.coverage import gcno_parser
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GEN_TAG = "/gen/"
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def GenerateLineCoverageVector(gcno_file_summary, exclude_paths, coverage_dict):
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"""Process the gcno_file_summary and update the coverage dictionary.
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Create a coverage vector for each source file contained in gcno_file_summary
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and update the corresponding item in coverage_dict.
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Args:
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gcno_file_summary: FileSummary object after gcno and gcda files have
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been parsed.
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exclude_paths: a list of paths should be ignored in the coverage report.
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coverage_dict: a dictionary for each source file and its corresponding
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coverage vector.
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"""
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for ident in gcno_file_summary.functions:
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func = gcno_file_summary.functions[ident]
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file_name = func.src_file_name
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if GEN_TAG in file_name:
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logging.debug("Skip generated source file %s.", file_name)
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continue
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skip_file = False
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for path in exclude_paths:
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if file_name.startswith(path):
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skip_file = True
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break
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if skip_file:
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logging.debug("Skip excluded source file %s.", file_name)
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continue
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src_lines_counts = coverage_dict[file_name] if file_name in coverage_dict else []
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for block in func.blocks:
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for line in block.lines:
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if line > len(src_lines_counts):
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src_lines_counts.extend([-1] *
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(line - len(src_lines_counts)))
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if src_lines_counts[line - 1] < 0:
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src_lines_counts[line - 1] = 0
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src_lines_counts[line - 1] += block.count
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coverage_dict[file_name] = src_lines_counts
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def GetCoverageStats(src_lines_counts):
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"""Returns the coverage stats.
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Args:
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src_lines_counts: A list of non-negative integers or -1 representing
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the number of times the i-th line was executed.
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-1 indicates a line that is not executable.
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Returns:
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integer, the number of lines instrumented for coverage measurement
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integer, the number of executed or covered lines
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"""
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total = 0
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covered = 0
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if not src_lines_counts or not isinstance(src_lines_counts, list):
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logging.error("GetCoverageStats: input invalid.")
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return total, covered
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for line in src_lines_counts:
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if line < 0:
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continue
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total += 1
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if line > 0:
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covered += 1
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return total, covered
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