Repository Analysis

jbeder/yaml-cpp

A YAML parser and emitter in C++

6.6 Low AI signal View on GitHub

Analysis Overview

This report presents the forensic synthetic code analysis of jbeder/yaml-cpp, a C++ project with 6,127 GitHub stars. SynthScan v2.0 examined 88,739 lines of code across 256 source files, recording 585 pattern matches distributed across 12 syntactic categories. The overall adjusted score of 6.6 places this repository in the Low AI signal band.

The scanner applied 160+ deterministic lexical heuristics, multi-line block detectors, abstract syntax tree depth profilers, and a cross-file Jaccard similarity matrix to construct a statistically normalised synthetic code estimate. All matches are individually weighted by severity coefficient and contextual multiplier before summation, and the resulting headline score is temporally discounted to account for the repository's development history relative to the commercial emergence of large language model coding tooling (November 2022 onward).

6.6
Adjusted Score
6.6
Raw Score
100%
Time Factor
2026-07-13
Last Push
6.1K
Stars
C++
Language
88.7K
Lines of Code
256
Files
585
Pattern Hits
2026-07-14
Scan Date
0.04
HC Hit Rate

What These Metrics Mean

Adjusted Score
Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score
The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor
The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits
Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate
High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files
Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

Longitudinal tracking requires multiple scan runs. Once this repository is re-scanned after new commits land, this chart will visualise how the synthetic code signal evolves over time — enabling you to detect whether AI authorship is growing, stabilising, or being actively corrected by human engineers.

No multi-scan history yet — run the scanner again to build trend data.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 11MEDIUM 5LOW 569

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 585 distinct pattern matches across 12 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block533 hits · 474 pts
SeverityFileLineSnippetContext
LOWtest/integration/emitter_test.cpp1441 ExpectEmit("[null, NULL, Null, ~]");COMMENT
LOWtest/googletest-1.16.0/ci/macos-presubmit.sh1#!/bin/bashCOMMENT
LOWtest/googletest-1.16.0/ci/macos-presubmit.sh21# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOTCOMMENT
LOWtest/googletest-1.16.0/ci/linux-presubmit.sh1#!/bin/bashCOMMENT
LOWtest/googletest-1.16.0/docs/advanced.md941COMMENT
LOWtest/googletest-1.16.0/googletest/CMakeLists.txt1########################################################################COMMENT
LOWtest/googletest-1.16.0/googletest/CMakeLists.txt181########################################################################COMMENT
LOW…st-1.16.0/googletest/test/gtest_xml_output_unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…st-1.16.0/googletest/test/googletest-param-test-test.h1// Copyright 2008, Google Inc.COMMENT
LOW…st-1.16.0/googletest/test/googletest-param-test-test.h21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHTCOMMENT
LOW…etest-1.16.0/googletest/test/googletest-output-test.py1#!/usr/bin/env pythonCOMMENT
LOW…etest/test/googletest-param-test-invalid-name1-test.py1#!/usr/bin/env pythonCOMMENT
LOW…t/googletest-1.16.0/googletest/test/gtest_help_test.py1#!/usr/bin/env pythonCOMMENT
LOW…t/googletest-1.16.0/googletest/test/gtest_help_test.py21# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOTCOMMENT
LOW…gletest/test/googletest-global-environment-unittest.py1# Copyright 2021 Google Inc. All Rights Reserved.COMMENT
LOW…/googletest-1.16.0/googletest/test/gtest_test_utils.py1# Copyright 2006, Google Inc.COMMENT
LOW…letest-1.16.0/googletest/test/gtest_json_test_utils.py1# Copyright 2018, Google Inc.COMMENT
LOW…etest/test/googletest-param-test-invalid-name2-test.py1#!/usr/bin/env pythonCOMMENT
LOW…6.0/googletest/test/googletest-json-output-unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…oogletest/test/googletest-break-on-failure-unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…16.0/googletest/test/googletest-setuptestsuite-test.py1#!/usr/bin/env pythonCOMMENT
LOW…16.0/googletest/test/googletest-list-tests-unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…test-1.16.0/googletest/test/googletest-env-var-test.py1#!/usr/bin/env pythonCOMMENT
LOW…test-1.16.0/googletest/test/gtest_xml_outfiles_test.py1#!/usr/bin/env pythonCOMMENT
LOW…gletest-1.16.0/googletest/test/gtest-typed-test_test.h1// Copyright 2008 Google Inc.COMMENT
LOW…gletest-1.16.0/googletest/test/gtest-typed-test_test.h21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHTCOMMENT
LOW…t-1.16.0/googletest/test/gtest_list_output_unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…gletest-1.16.0/googletest/test/gtest_xml_test_utils.py1# Copyright 2006, Google Inc.COMMENT
LOWtest/googletest-1.16.0/googletest/test/production.h1// Copyright 2006, Google Inc.COMMENT
LOWtest/googletest-1.16.0/googletest/test/production.h21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHTCOMMENT
LOW…letest-1.16.0/googletest/test/googletest-color-test.py1#!/usr/bin/env pythonCOMMENT
LOW…t-1.16.0/googletest/test/googletest-filter-unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…1.16.0/googletest/test/gtest_skip_check_output_test.py1#!/usr/bin/env pythonCOMMENT
LOW…letest-1.16.0/googletest/test/gtest_testbridge_test.py1#!/usr/bin/env pythonCOMMENT
LOW….0/googletest/test/googletest-throw-on-failure-test.py1#!/usr/bin/env pythonCOMMENT
LOW…test-1.16.0/googletest/test/googletest-shuffle-test.py1#!/usr/bin/env pythonCOMMENT
LOW…test-1.16.0/googletest/test/googletest-shuffle-test.py21# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FORCOMMENT
LOW….16.0/googletest/test/googletest-uninitialized-test.py1#!/usr/bin/env pythonCOMMENT
LOW….0/googletest/test/googletest-catch-exceptions-test.py1#!/usr/bin/env pythonCOMMENT
LOW….16.0/googletest/test/googletest-json-outfiles-test.py1#!/usr/bin/env pythonCOMMENT
LOW…etest/test/gtest_skip_environment_check_output_test.py1#!/usr/bin/env pythonCOMMENT
LOW…1.16.0/googletest/test/googletest-failfast-unittest.py1#!/usr/bin/env pythonCOMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h1// Copyright 2007, Google Inc.COMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHTCOMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h41COMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h61 4251 GTEST_MAYBE_5046_ /* class A needs to have dll-interface to be used byCOMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h141 public:COMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h161 // "is empty" matcher probably only needs to explain what the actualCOMMENT
LOW…etest-1.16.0/googletest/include/gtest/gtest-matchers.h601 return os;COMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h1// Copyright 2005, Google Inc.COMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHTCOMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h41#define GOOGLETEST_INCLUDE_GTEST_GTEST_DEATH_TEST_H_COMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h61// tests. IMPORTANT: This is an internal utility. Using it may break theCOMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h81//COMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h101//COMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h121// learn wherever you come from. In the following: 'A' denotes aCOMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h141// A* matches 0 or many occurrences of ACOMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h161// simplicity, the current implementation doesn't search the PATHCOMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h221// since the sideeffects of the call are only visible in opt mode, and notCOMMENT
LOW…est-1.16.0/googletest/include/gtest/gtest-death-test.h241// // opt-mode has sideeffect visible.COMMENT
473 more matches not shown…
Cross-File Repetition10 hits · 50 pts
SeverityFileLineSnippetContext
HIGH…etest/test/googletest-param-test-invalid-name1-test.py0verifies that google test warns the user when not initialized properly.STRING
HIGH…etest/test/googletest-param-test-invalid-name2-test.py0verifies that google test warns the user when not initialized properly.STRING
HIGH….16.0/googletest/test/googletest-uninitialized-test.py0verifies that google test warns the user when not initialized properly.STRING
HIGH…etest/test/googletest-param-test-invalid-name1-test.py0runs the given command and verifies its exit code and output.STRING
HIGH…etest/test/googletest-param-test-invalid-name2-test.py0runs the given command and verifies its exit code and output.STRING
HIGH….16.0/googletest/test/googletest-uninitialized-test.py0runs the given command and verifies its exit code and output.STRING
HIGH…test-1.16.0/googletest/test/googletest-env-var-test.py0sets the env variable to 'value'; unsets it when 'value' is none.STRING
HIGH…letest-1.16.0/googletest/test/googletest-color-test.py0sets the env variable to 'value'; unsets it when 'value' is none.STRING
HIGH…t-1.16.0/googletest/test/googletest-filter-unittest.py0sets the env variable to 'value'; unsets it when 'value' is none.STRING
HIGH…1.16.0/googletest/test/googletest-failfast-unittest.py0sets the env variable to 'value'; unsets it when 'value' is none.STRING
AI Slop Vocabulary5 hits · 15 pts
SeverityFileLineSnippetContext
MEDIUM…est-1.16.0/googletest/include/gtest/gtest-death-test.h152// This implementation is *not* meant to be as highly tuned or robustCOMMENT
MEDIUM…est-1.16.0/googletest/include/gtest/gtest-death-test.h224// In practice, this can be used to test functions that utilize theCOMMENT
MEDIUMsrc/contrib/dragonbox.h1227 // Without the bound on n_max (which compilers these days never leverage), theCOMMENT
MEDIUMsrc/contrib/dragonbox.h1237 // Without the bound on n_max (which compilers these days never leverage), theCOMMENT
MEDIUMsrc/contrib/dragonbox.h1250 // Without the bound on n_max (which compilers these days never leverage), theCOMMENT
Verbosity Indicators9 hits · 14 pts
SeverityFileLineSnippetContext
LOWsrc/contrib/dragonbox.h3390 // Step 1: Schubfach multiplier calculation.COMMENT
LOWsrc/contrib/dragonbox.h3426 // Step 2: Try larger divisor; remove trailing zeros if necessary.COMMENT
LOWsrc/contrib/dragonbox.h3484 // Step 3: Find the significand with the smaller divisor.COMMENT
LOWsrc/contrib/dragonbox.h3587 // Step 1: Schubfach multiplier calculation.COMMENT
LOWsrc/contrib/dragonbox.h3626 // Step 2: Try larger divisor; remove trailing zeros if necessary.COMMENT
LOWsrc/contrib/dragonbox.h3683 // Step 3: Find the significand with the smaller divisor.COMMENT
LOWsrc/contrib/dragonbox.h3731 // Step 1: Schubfach multiplier calculation.COMMENT
LOWsrc/contrib/dragonbox.h3757 // Step 2: Try larger divisor; remove trailing zeros if necessary.COMMENT
LOWsrc/contrib/dragonbox.h3791 // Step 3: Find the significand with the small divisor.COMMENT
Structural Annotation Overuse9 hits · 13 pts
SeverityFileLineSnippetContext
LOWsrc/contrib/dragonbox.h3390 // Step 1: Schubfach multiplier calculation.COMMENT
LOWsrc/contrib/dragonbox.h3426 // Step 2: Try larger divisor; remove trailing zeros if necessary.COMMENT
LOWsrc/contrib/dragonbox.h3484 // Step 3: Find the significand with the smaller divisor.COMMENT
LOWsrc/contrib/dragonbox.h3587 // Step 1: Schubfach multiplier calculation.COMMENT
LOWsrc/contrib/dragonbox.h3626 // Step 2: Try larger divisor; remove trailing zeros if necessary.COMMENT
LOWsrc/contrib/dragonbox.h3683 // Step 3: Find the significand with the smaller divisor.COMMENT
LOWsrc/contrib/dragonbox.h3731 // Step 1: Schubfach multiplier calculation.COMMENT
LOWsrc/contrib/dragonbox.h3757 // Step 2: Try larger divisor; remove trailing zeros if necessary.COMMENT
LOWsrc/contrib/dragonbox.h3791 // Step 3: Find the significand with the small divisor.COMMENT
Deep Nesting7 hits · 7 pts
SeverityFileLineSnippetContext
LOWtest/create-emitter-tests.py8CODE
LOWtest/create-emitter-tests.py123CODE
LOWtest/create-emitter-tests.py174CODE
LOW…letest-1.16.0/googletest/test/gtest_json_test_utils.py35CODE
LOW…letest-1.16.0/googletest/test/gtest_json_test_utils.py46CODE
LOW…gletest-1.16.0/googletest/test/gtest_xml_test_utils.py131CODE
LOW…gletest-1.16.0/googletest/test/gtest_xml_test_utils.py186CODE
Docstring Block Structure1 hit · 5 pts
SeverityFileLineSnippetContext
HIGH…/googletest-1.16.0/googletest/test/gtest_test_utils.py200Changes into a specified directory, if provided, and executes a command. Restores the old directory afterwards. STRING
Fake / Example Data3 hits · 3 pts
SeverityFileLineSnippetContext
LOWtest/integration/emitter_test.cpp1243 "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed eiusmod "CODE
LOWtest/integration/emitter_test.cpp1243 "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed eiusmod "CODE
LOWtest/googletest-1.16.0/docs/reference/mocking.md278 .WillRepeatedly(Return("John Doe")); // Return "John Doe" on all callsCODE
Hyper-Verbose Identifiers3 hits · 3 pts
SeverityFileLineSnippetContext
LOW…t/googletest-1.16.0/googletest/test/gtest_help_test.py130 def test_prints_help_with_full_flag(self):CODE
LOW…t/googletest-1.16.0/googletest/test/gtest_help_test.py157 def test_runs_tests_without_help_flag(self):CODE
LOW…t/googletest-1.16.0/googletest/test/gtest_help_test.py168 def test_runs_tests_with_gtest_internal_flag(self):CODE
AI Structural Patterns2 hits · 2 pts
SeverityFileLineSnippetContext
LOW…etest-1.16.0/googletest/test/googletest-output-test.py215CODE
LOW…googletest-1.16.0/googlemock/test/gmock_output_test.py72CODE
Unused Imports2 hits · 2 pts
SeverityFileLineSnippetContext
LOW…test-1.16.0/googletest/test/gtest_xml_outfiles_test.py35CODE
LOW…gletest-1.16.0/googletest/test/gtest_xml_test_utils.py33CODE
Redundant / Tautological Comments1 hit · 2 pts
SeverityFileLineSnippetContext
LOW…t-1.16.0/googletest/test/googletest-filter-unittest.py69# Check if this platform can unset environment variables in child processes.COMMENT