Filter out bug pattern tests

.github/workflows/build.yaml

@@ -2,8 +2,8 @@ name: Build and verify
 on:
   pull_request:
   push:
-    branches:
-      - 'master'
+    branches: [$default-branch]
+  workflow_dispatch:
 permissions:
   contents: read
 jobs:

.github/workflows/deploy-website.yaml

@@ -0,0 +1,39 @@
+name: Update `error-prone.picnic.tech` website contents
+on:
+  push:
+    branches: [$default-branch]
+  workflow_dispatch:
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+jobs:
+  build:
+    runs-on: ubuntu-22.04
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3.0.2
+      - name: Configure Github Pages
+        uses: actions/configure-pages@v2.0.0
+      - name: Generate documentation
+        run:  bash ./generate-docs.sh
+      - name: Build website with Jekyll
+        uses: actions/jekyll-build-pages@v1.0.5
+        with:
+          source: website/
+          destination: ./_site
+      - name: Upload website artifact
+        uses: actions/upload-pages-artifact@v1.0.3
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-22.04
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v1.0.9

README.md

@@ -1,10 +1,10 @@
 <div align="center">
-
-<picture>
-  <source media="(prefers-color-scheme: dark)" srcset="logo-dark.svg">
-  <source media="(prefers-color-scheme: light)" srcset="logo.svg">
-  <img alt="Error Prone Support logo" src="logo.svg" width="50%">
-</picture>
+  <picture>
+    <source media="(prefers-color-scheme: dark)" srcset="website/assets/images/logo-dark.svg">
+    <source media="(prefers-color-scheme: light)" srcset="website/assets/images/logo.svg">
+    <img alt="Error Prone Support logo" src="website/assets/images/logo.svg" width="50%">
+  </picture>
+</div>
 
 # Error Prone Support
 
@@ -23,8 +23,6 @@ maintainability, consistency and avoidance of common gotchas.
 [Getting started](#-getting-started) • [Building](#-building) •
 [How it works](#-how-it-works) • [Contributing](#%EF%B8%8F-contributing)
 
-</div>
-
 ---
 
 ## ⚡ Getting started

docgen/pom.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <artifactId>error-prone-support</artifactId>
+        <groupId>tech.picnic.error-prone-support</groupId>
+        <version>0.3.1-SNAPSHOT</version>
+    </parent>
+
+    <artifactId>docgen</artifactId>
+
+
+    <name>Picnic :: Error Prone Support :: Docgen</name>
+    <description>Docgen.</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>${groupId.error-prone}</groupId>
+            <artifactId>error_prone_annotations</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>${groupId.error-prone}</groupId>
+            <artifactId>error_prone_check_api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>${groupId.error-prone}</groupId>
+            <artifactId>error_prone_core</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.auto.service</groupId>
+            <artifactId>auto-service-annotations</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.auto.value</groupId>
+            <artifactId>auto-value-annotations</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.google.code.findbugs</groupId>
+            <artifactId>jsr305</artifactId>
+            <scope>provided</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>

docgen/src/main/java/tech/picnic/errorprone/plugin/BugPatternData.java

@@ -0,0 +1,56 @@
+package tech.picnic.errorprone.plugin;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.BugPattern;
+import com.google.errorprone.BugPattern.LinkType;
+import com.google.errorprone.BugPattern.SeverityLevel;
+import java.util.Arrays;
+
+@AutoValue
+abstract class BugPatternData {
+  static BugPatternData create(BugPattern annotation, String name) {
+    return new AutoValue_BugPatternData(
+        name,
+        Arrays.toString(annotation.altNames()),
+        annotation.linkType(),
+        annotation.link(),
+        Arrays.toString(annotation.tags()),
+        annotation.summary(),
+        annotation.explanation(),
+        annotation.severity(),
+        annotation.disableable());
+  }
+
+  @JsonProperty
+  abstract String name();
+
+  // Should be String[]
+  @JsonProperty
+  abstract String altNames();
+
+  @JsonProperty
+  abstract LinkType linkType();
+
+  @JsonProperty
+  abstract String link();
+
+  @JsonProperty
+  // Should be String[]
+  abstract String tags();
+
+  @JsonProperty
+  abstract String summary();
+
+  @JsonProperty
+  abstract String explanation();
+
+  @JsonProperty
+  abstract SeverityLevel severityLevel();
+
+  @JsonProperty
+  abstract boolean disableable();
+
+  // SuppressionAnnotations?
+  // DocumentSuppression?
+}

docgen/src/main/java/tech/picnic/errorprone/plugin/Docgen.java

@@ -0,0 +1,25 @@
+package tech.picnic.errorprone.plugin;
+
+import com.google.auto.service.AutoService;
+import com.sun.source.util.JavacTask;
+import com.sun.source.util.Plugin;
+import com.sun.tools.javac.api.BasicJavacTask;
+
+/**
+ * A variant of {@code com.google.errorprone.refaster.RefasterRuleCompiler} that outputs a {@code
+ * fully/qualified/Class.refaster} file for each compiled {@code fully.qualified.Class} that
+ * contains a Refaster template.
+ */
+@AutoService(Plugin.class)
+public final class Docgen implements Plugin {
+  @Override
+  public String getName() {
+    return getClass().getSimpleName();
+  }
+
+  @Override
+  public void init(JavacTask javacTask, String... args) {
+    javacTask.addTaskListener(
+        new DocgenTaskListener(((BasicJavacTask) javacTask).getContext(), args[0]));
+  }
+}

docgen/src/main/java/tech/picnic/errorprone/plugin/DocgenTaskListener.java

@@ -0,0 +1,74 @@
+package tech.picnic.errorprone.plugin;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.google.errorprone.BugPattern;
+import com.google.errorprone.util.ASTHelpers;
+import com.sun.source.tree.ClassTree;
+import com.sun.source.tree.Tree;
+import com.sun.source.tree.VariableTree;
+import com.sun.source.util.TaskEvent;
+import com.sun.source.util.TaskEvent.Kind;
+import com.sun.source.util.TaskListener;
+import com.sun.tools.javac.api.JavacTrees;
+import com.sun.tools.javac.main.JavaCompiler;
+import com.sun.tools.javac.util.Context;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+
+/** XXX: Fill in. */
+final class DocgenTaskListener implements TaskListener {
+  private final Context context;
+
+  private final String basePath;
+
+  private final ObjectMapper mapper =
+      new ObjectMapper()
+          .configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false)
+          .configure(JsonGenerator.Feature.AUTO_CLOSE_TARGET, false);
+
+  DocgenTaskListener(Context context, String path) {
+    this.context = context;
+    this.basePath = path.substring(path.indexOf('=') + 1);
+  }
+
+  @Override
+  @SuppressWarnings("SystemOut")
+  public void finished(TaskEvent taskEvent) {
+    if (taskEvent.getKind() != Kind.ANALYZE || JavaCompiler.instance(context).errorCount() > 0) {
+      return;
+    }
+
+    ClassTree tree = JavacTrees.instance(context).getTree(taskEvent.getTypeElement());
+    if (tree == null || !isBugPatternTest(tree)) {
+      return;
+    }
+
+    BugPattern annotation = taskEvent.getTypeElement().getAnnotation(BugPattern.class);
+    BugPatternData bugPatternData =
+        BugPatternData.create(annotation, taskEvent.getTypeElement().getSimpleName().toString());
+
+    System.out.println("Analysing: " + taskEvent.getTypeElement().getSimpleName());
+    File file = new File(basePath + "/bugpattern-data.jsonl");
+
+    try (FileWriter fileWriter = new FileWriter(file, true)) {
+      mapper.writeValue(fileWriter, bugPatternData);
+      fileWriter.write("\n");
+    } catch (IOException e) {
+      e.printStackTrace();
+    }
+  }
+
+  private static boolean isBugPattern(ClassTree tree) {
+    return ASTHelpers.hasDirectAnnotationWithSimpleName(tree, BugPattern.class.getSimpleName());
+  }
+
+  private static boolean isBugPatternTest(ClassTree tree) {
+    return tree.getMembers().stream()
+        .filter(VariableTree.class::isInstance)
+        .map(VariableTree.class::cast)
+        .anyMatch(member -> member.getType().toString().equals("BugCheckerRefactoringTestHelper"));
+  }
+}

docgen/src/main/java/tech/picnic/errorprone/plugin/RefasterTemplateData.java

@@ -0,0 +1,25 @@
+package tech.picnic.errorprone.plugin;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.google.auto.value.AutoValue;
+import com.google.errorprone.BugPattern.SeverityLevel;
+
+@AutoValue
+abstract class RefasterTemplateData {
+  static RefasterTemplateData create(
+      String name, String description, String link, SeverityLevel severityLevel) {
+    return new AutoValue_RefasterTemplateData(name, description, link, severityLevel);
+  }
+
+  @JsonProperty
+  abstract String name();
+
+  @JsonProperty
+  abstract String description();
+
+  @JsonProperty
+  abstract String link();
+
+  @JsonProperty
+  abstract SeverityLevel severityLevel();
+}

docgen/src/main/java/tech/picnic/errorprone/plugin/package-info.java

@@ -0,0 +1,4 @@
+/** A Java compiler plugin that XXX: fill in. */
+@com.google.errorprone.annotations.CheckReturnValue
+@javax.annotation.ParametersAreNonnullByDefault
+package tech.picnic.errorprone.plugin;

generate-docs.sh

@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+WEBSITE_FOLDER="website"
+HOMEPAGE="${WEBSITE_FOLDER}/index.md"
+
+configure() {
+    cd "$(git rev-parse --show-toplevel || echo .)"
+    mkdir "${BUGPATTERN_FOLDER}" 2>/dev/null
+    mkdir "${REFASTER_FOLDER}" 2>/dev/null
+}
+
+generate_homepage() {
+    echo "Generating ${HOMEPAGE}"
+    cat > "${HOMEPAGE}" << EOF
+---
+layout: default
+title: Home
+nav_order: 1
+---
+EOF
+
+    cat "README.md" >> ${HOMEPAGE}
+
+    SEDOPTION="-i"
+    if [[ "$OSTYPE" == "darwin"* ]]; then
+        SEDOPTION="-i .bak"
+    fi
+    sed $SEDOPTION 's/src="website\//src="/g' ${HOMEPAGE}
+    sed $SEDOPTION 's/srcset="website\//srcset="/g' ${HOMEPAGE}
+}
+
+# Do it
+configure
+generate_homepage

pom.xml

@@ -39,6 +39,7 @@
     </developers>
 
     <modules>
+        <module>docgen</module>
         <module>error-prone-contrib</module>
         <module>refaster-compiler</module>
         <module>refaster-runner</module>
@@ -820,6 +821,11 @@
                                 <artifactId>error_prone_core</artifactId>
                                 <version>${version.error-prone}</version>
                             </path>
+                            <path>
+                                <groupId>com.google.auto.value</groupId>
+                                <artifactId>auto-value</artifactId>
+                                <version>${version.auto-value}</version>
+                            </path>
                             <path>
                                 <groupId>com.google.auto.service</groupId>
                                 <artifactId>auto-service</artifactId>
@@ -1299,6 +1305,31 @@
     </build>
 
     <profiles>
+        <profile>
+            <id>docgen</id>
+            <build>
+                <pluginManagement>
+                    <plugins>
+                        <plugin>
+                            <groupId>org.apache.maven.plugins</groupId>
+                            <artifactId>maven-compiler-plugin</artifactId>
+                            <configuration>
+                                <annotationProcessorPaths combine.children="append">
+                                    <path>
+                                        <groupId>${project.groupId}</groupId>
+                                        <artifactId>docgen</artifactId>
+                                        <version>${project.version}</version>
+                                    </path>
+                                </annotationProcessorPaths>
+                                <compilerArgs combine.children="append">
+                                    <arg>-Xplugin:Docgen -XdocsOutputDirectory=${project.build.directory}</arg>
+                                </compilerArgs>
+                            </configuration>
+                        </plugin>
+                    </plugins>
+                </pluginManagement>
+            </build>
+        </profile>
         <profile>
             <id>error-prone-fork</id>
             <properties>

website/.gitignore

@@ -0,0 +1,14 @@
+### Jekyll ###
+_site/
+.sass-cache/
+.jekyll-cache/
+.jekyll-metadata
+Gemfile.lock
+
+# Ignore folders generated by Bundler
+.bundle/
+vendor/
+
+# Generated content
+*.bak
+index.md

website/404.md

@@ -0,0 +1,11 @@
+---
+layout: default
+title: Page not found
+permalink: /404.html
+nav_exclude: true
+search_exclude: true
+---
+
+## Page not found :(
+
+The requested page could not be found.

website/Gemfile

@@ -0,0 +1,3 @@
+source "https://rubygems.org"
+gem "github-pages", "~> 227"
+gem "rake", "~> 13.0" # Required for "just-the-docs" theme

website/README.md

@@ -0,0 +1,44 @@
+# Error Prone Support website
+
+This directory contains the majority of the source code that powers
+[error-prone.picnic.tech][error-prone-support-website]. The website is
+statically generated using [Jekyll][jekyll].
+
+# Local development
+
+To view the website on `localhost`, first follow the [Jekyll installation
+instructions][jekyll-docs-installation]. Once done, in this directory execute:
+
+```sh
+bundle install
+../generate-docs.sh && bundle exec jekyll serve --livereload
+```
+
+The website will now be [available][localhost-port-4000] on port 4000. Source
+code modifications will automatically be reflected. (An exception is
+`_config.yml`: changes to this file require a server restart.) Subsequent
+server restarts do not require running `bundle install`, unless `Gemfile` has
+been updated in the interim.
+
+Documentation can be regenerated whist jekyll is running, by executing:
+
+```sh
+../generate-docs.sh
+```
+
+If you are not familiar with Jekyll, be sure to check out its
+[documentation][jekyll-docs]. It is recommended to follow the provided
+step-by-step tutorial.
+
+# Deployment
+
+The website is regenerated and deployed using the
+[`deploy-website.yaml`][error-prone-support-website-deploy-workflow] GitHub
+Actions workflow any time a change is merged to `master`.
+
+[error-prone-support-website]: https://error-prone.picnic.tech
+[error-prone-support-website-deploy-workflow]: https://github.com/PicnicSupermarket/error-prone-support/actions/workflows/deploy-website.yaml
+[jekyll]: https://jekyllrb.com
+[jekyll-docs]: https://jekyllrb.com/docs/
+[jekyll-docs-installation]: https://jekyllrb.com/docs/installation/
+[localhost-port-4000]: http://127.0.0.1:4000

website/_config.yml

@@ -0,0 +1,42 @@
+# General configuration.
+title: Error Prone Support
+logo: assets/images/favicon.svg
+url: https://error-prone.picnic.tech/
+description: >-
+  Error Prone Support is a Picnic-opinionated extension of Google's Error
+  Prone. It aims to improve code quality, focussing on maintainability,
+  consistency and avoidance of common gotchas.
+
+remote_theme: just-the-docs/just-the-docs
+plugins:
+- jekyll-remote-theme
+
+# Do not deploy through GitHub pages.
+exclude:
+  - Gemfile
+  - Gemfile.lock
+  - README.md
+  - vendor
+
+permalink: pretty # Use /doc/ vs. /doc.html
+
+# Theme configuration.
+search_enabled: true
+heading_anchors: true
+
+nav_external_links:
+  - title: Error Prone Support on GitHub
+    url: https://github.com/PicnicSupermarket/error-prone-support
+    hide_icon: false
+
+# Author configuration.
+twitter:
+  username: picnic
+  card: summary
+
+social:
+  name: Picnic
+  links:
+    - https://github.com/PicnicSupermarket
+    - https://twitter.com/picnic
+    - https://www.linkedin.com/company/picnictechnologies

website/_includes/footer_custom.html

@@ -0,0 +1,5 @@
+<img src="/assets/images/picnic-logo@2x.png" alt="Picnic Logo" id="logo" />
+
+<p align="center">
+    Copyright &copy; 2017-2022 Picnic Technologies BV
+</p>

website/_includes/head_custom.html

@@ -0,0 +1,17 @@
+<!-- Generated from https://realfavicongenerator.net/ -->
+<link rel="apple-touch-icon" sizes="180x180" href="/assets/images/apple-touch-icon.png">
+<link rel="icon" type="image/png" sizes="32x32" href="/assets/images/favicon-32x32.png">
+<link rel="icon" type="image/png" sizes="16x16" href="/assets/images/favicon-16x16.png">
+<link rel="manifest" href="/assets/images/site.webmanifest">
+<link rel="mask-icon" href="/assets/images/safari-pinned-tab.svg" color="#5bbad5">
+<link rel="shortcut icon" href="/assets/images/favicon.ico">
+<meta name="msapplication-TileColor" content="#da532c">
+<meta name="msapplication-config" content="/assets/images/browserconfig.xml">
+<meta name="theme-color" content="#ffffff">
+
+<!-- Support light and dark mode, as it's not natively supported.
+    See: https://github.com/just-the-docs/just-the-docs/issues/234 -->
+<link rel="stylesheet" href="{{ '/assets/css/just-the-docs-light.css' | relative_url }}"
+    media="(prefers-color-scheme: light)">
+<link rel="stylesheet" href="{{ '/assets/css/just-the-docs-dark.css' | relative_url }}"
+    media="(prefers-color-scheme: dark)">

website/_sass/custom/custom.scss

@@ -0,0 +1,24 @@
+// We should override $nav-width(-md), however this breaks code highlighting and other styles.
+// This appears an issue wrt the recommended way.
+// See: https://github.com/just-the-docs/just-the-docs/issues/982
+@include mq(lg) {
+    .side-bar {
+        min-width: 400px;
+    }
+
+    .site-nav, .site-header {
+        width: 400px;
+    }
+}
+
+// Add support for external anchor icons.
+.external > svg {
+    width: 1rem;
+    vertical-align: text-bottom;
+}
+
+footer > img#logo {
+    width: 2rem;
+    margin: 0 auto;
+    display: block;
+}

website/assets/images/browserconfig.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<browserconfig>
+    <msapplication>
+        <tile>
+            <square150x150logo src="/assets/images/mstile-150x150.png"/>
+            <TileColor>#da532c</TileColor>
+        </tile>
+    </msapplication>
+</browserconfig>

website/assets/images/safari-pinned-tab.svg

@@ -0,0 +1,88 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
+ "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg version="1.0" xmlns="http://www.w3.org/2000/svg"
+ width="2623.000000pt" height="2623.000000pt" viewBox="0 0 2623.000000 2623.000000"
+ preserveAspectRatio="xMidYMid meet">
+<metadata>
+Created by potrace 1.14, written by Peter Selinger 2001-2017
+</metadata>
+<g transform="translate(0.000000,2623.000000) scale(0.100000,-0.100000)"
+fill="#000000" stroke="none">
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website/assets/images/site.webmanifest

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+{
+    "name": "",
+    "short_name": "",
+    "icons": [
+        {
+            "src": "/assets/images/android-chrome-192x192.png",
+            "sizes": "192x192",
+            "type": "image/png"
+        },
+        {
+            "src": "/assets/images/android-chrome-512x512.png",
+            "sizes": "512x512",
+            "type": "image/png"
+        }
+    ],
+    "theme_color": "#ffffff",
+    "background_color": "#ffffff",
+    "display": "standalone"
+}

website/bugpatterns.md

@@ -0,0 +1,8 @@
+---
+layout: default
+title: Bug Patterns
+nav_order: 2
+has_children: true
+---
+
+# Bug Patterns

website/refastertemplates.md

@@ -0,0 +1,8 @@
+---
+layout: default
+title: Refaster templates
+nav_order: 2
+has_children: true
+---
+
+# Refaster templates