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SmiddyPenceSmiddyPence
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‎.gitignore

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lib
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bin
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.manager
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target
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.settings
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*~
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/target
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.project
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.classpath
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.idea/
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*.iml
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release.properties

‎pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.github.javaparser</groupId>
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<artifactId>javaparser-book</artifactId>
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<version>1.0-SNAPSHOT</version>
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<build>
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<plugins>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<dependencies>
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<dependency>
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<groupId>com.github.javaparser</groupId>
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<artifactId>javaparser-core</artifactId>
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<version>3.0.0-RC.3</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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</dependency>
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</dependencies>
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</project>

‎src/.DS_Store

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‎src/main/.DS_Store

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‎src/main/java/.DS_Store

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‎src/main/java/org/javaparser/examples/CommentGenerator.java

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package org.javaparser.examples;
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import com.github.javaparser.JavaParser;
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import com.github.javaparser.ast.CompilationUnit;
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import com.github.javaparser.ast.body.MethodDeclaration;
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import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
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import java.io.FileInputStream;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.regex.Pattern;
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public class CommentGenerator {
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private static final String FILE_PATH = "src/main/java/org/javaparser/examples/ReversePolishNotation.java";
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private static final Pattern FIND_UPPERCASE = Pattern.compile("(.)(\\p{Upper})");
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public static void main(String[] args) throws Exception {
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CompilationUnit cu = JavaParser.parse(new FileInputStream(FILE_PATH));
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List<MethodDeclaration> methodDeclarations = new ArrayList<>();
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VoidVisitorAdapter<List<MethodDeclaration>> unDocumentedMethodCollector = new UnDocumentedMethodCollector();
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unDocumentedMethodCollector.visit(cu, methodDeclarations);
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methodDeclarations.forEach(md -> md.setJavaDocComment(generateJavaDoc(md)));
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System.out.println(cu.toString());
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}
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private static class UnDocumentedMethodCollector extends VoidVisitorAdapter<List<MethodDeclaration>> {
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@Override
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public void visit(MethodDeclaration md, List<MethodDeclaration> collector) {
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super.visit(md, collector);
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if(md.getJavaDoc() != null) {
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collector.add(md);
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}
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}
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}
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private static String generateJavaDoc(MethodDeclaration md){
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return " " + camelCaseToTitleFormat(md.getNameAsString()) + " ";
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}
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private static String camelCaseToTitleFormat(String text){
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String split = FIND_UPPERCASE.matcher(text).replaceAll("$1 $2");
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return split.substring(0,1).toUpperCase() + split.substring(1);
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}
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}

‎src/main/java/org/javaparser/examples/CommentRemover.java

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package org.javaparser.examples;
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import com.github.javaparser.JavaParser;
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import com.github.javaparser.ast.CompilationUnit;
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import com.github.javaparser.ast.Node;
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import com.github.javaparser.ast.comments.Comment;
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import com.github.javaparser.ast.comments.LineComment;
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import java.io.FileInputStream;
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import java.util.List;
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import java.util.stream.Collectors;
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public class CommentRemover {
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private static final String FILE_PATH = "src/main/java/org/javaparser/examples/ReversePolishNotation.java";
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public static void main(String[] args) throws Exception {
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CompilationUnit cu = JavaParser.parse(new FileInputStream(FILE_PATH));
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List<Comment> comments = cu.getAllContainedComments();
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List<Comment> unwantedComments = comments
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.stream()
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.filter(p -> !p.getCommentedNode().isPresent() || p instanceof LineComment)
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.collect(Collectors.toList());
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unwantedComments.forEach(Node::remove);
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System.out.println(cu.toString());
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}
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}

‎src/main/java/org/javaparser/examples/CommentReporter.java

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package org.javaparser.examples;
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import com.github.javaparser.JavaParser;
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import com.github.javaparser.ast.CompilationUnit;
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import java.io.FileInputStream;
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import java.util.List;
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import java.util.stream.Collectors;
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public class CommentReporter {
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private static final String FILE_PATH = "src/main/java/org/javaparser/examples/ReversePolishNotation.java";
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public static void main(String[] args) throws Exception {
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CompilationUnit cu = JavaParser.parse(new FileInputStream(FILE_PATH));
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List<CommentReportEntry> comments = cu.getAllContainedComments()
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.stream()
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.map(p -> new CommentReportEntry(p.getClass().getSimpleName(),
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p.getContent(),
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p.getRange().get().begin.line,
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!p.getCommentedNode().isPresent()))
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.collect(Collectors.toList());
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comments.forEach(System.out::println);
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}
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private static class CommentReportEntry {
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private String type;
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private String text;
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private int lineNumber;
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private boolean isOrphan;
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CommentReportEntry(String type, String text, int lineNumber, boolean isOrphan) {
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this.type = type;
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this.text = text;
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this.lineNumber = lineNumber;
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this.isOrphan = isOrphan;
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}
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@Override
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public String toString() {
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return lineNumber + "|" + type + "|" + isOrphan + "|" + text.replaceAll("\\n","").trim();
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}
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}
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}

‎src/main/java/org/javaparser/examples/ModifyingVisitorExample.java

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package org.javaparser.examples;
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import com.github.javaparser.JavaParser;
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import com.github.javaparser.ast.CompilationUnit;
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import com.github.javaparser.ast.body.FieldDeclaration;
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import com.github.javaparser.ast.expr.IntegerLiteralExpr;
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import com.github.javaparser.ast.visitor.ModifierVisitor;
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import java.io.FileInputStream;
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import java.util.regex.Pattern;
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public class ModifyingVisitorExample {
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private static final String FILE_PATH = "src/main/java/org/javaparser/examples/ReversePolishNotation.java";
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private static final Pattern LOOK_AHEAD_THREE = Pattern.compile("(\\d)(?=(\\d{3})+$)");
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public static void main(String[] args) throws Exception {
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CompilationUnit cu = JavaParser.parse(new FileInputStream(FILE_PATH));
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ModifierVisitor<?> numericLiteralVisitor = new IntegerLiteralModifier();
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numericLiteralVisitor.visit(cu, null);
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System.out.println(cu.toString());
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}
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private static class IntegerLiteralModifier extends ModifierVisitor<Void> {
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@Override
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public FieldDeclaration visit(FieldDeclaration fd, Void arg) {
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super.visit(fd, arg);
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fd.getVariables().forEach(v ->
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v.getInitializer().ifPresent(i -> {
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if (i instanceof IntegerLiteralExpr) {
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v.setInitializer(formatWithUnderscores(((IntegerLiteralExpr) i).getValue()));
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}
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}));
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return fd;
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}
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}
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static String formatWithUnderscores(String value) {
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String withoutUnderscores = value.replaceAll("_", "");
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return LOOK_AHEAD_THREE.matcher(withoutUnderscores).replaceAll("$1_");
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}
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}

‎src/main/java/org/javaparser/examples/ReversePolishNotation.java

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package org.javaparser.examples;
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import java.util.Stack;
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import java.util.stream.Stream;
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/**
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* A Simple Reverse Polish Notation calculator with memory function.
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*/
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public class ReversePolishNotation {
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// What does this do?
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public static int ONE_BILLION = 1000000000;
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private double memory = 0;
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/**
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* Takes reverse polish notation style string and returns the resulting calculation.
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*
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* @param input mathematical expression in the reverse Polish notation format
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* @return the calculation result
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*/
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public Double calc(String input) {
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String[] tokens = input.split(" ");
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Stack<Double> numbers = new Stack<>();
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Stream.of(tokens).forEach(t -> {
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double a;
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double b;
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switch(t){
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case "+":
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b = numbers.pop();
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a = numbers.pop();
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numbers.push(a + b);
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break;
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case "/":
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b = numbers.pop();
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a = numbers.pop();
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numbers.push(a / b);
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break;
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case "-":
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b = numbers.pop();
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a = numbers.pop();
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numbers.push(a - b);
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break;
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case "*":
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b = numbers.pop();
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a = numbers.pop();
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numbers.push(a * b);
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break;
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default:
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numbers.push(Double.valueOf(t));
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}
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});
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return numbers.pop();
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}
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/**
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* Memory Recall uses the number in stored memory, defaulting to 0.
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*
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* @return the double
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*/
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public double memoryRecall(){
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return memory;
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}
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/**
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* Memory Clear sets the memory to 0.
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*/
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public void memoryClear(){
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memory = 0;
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}
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public void memoryStore(double value){
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memory = value;
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}
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}
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/* EOF */

‎src/main/java/org/javaparser/examples/TimePrinter.java

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package org.javaparser.examples;
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import java.time.LocalDateTime;
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public class TimePrinter {
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public static void main(String args[]){
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System.out.print(LocalDateTime.now());
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}
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}

‎src/main/java/org/javaparser/examples/VoidVisitorExample.java

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package org.javaparser.examples;
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import com.github.javaparser.JavaParser;
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import com.github.javaparser.ast.CompilationUnit;
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import com.github.javaparser.ast.body.MethodDeclaration;
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import com.github.javaparser.ast.visitor.VoidVisitor;
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import com.github.javaparser.ast.visitor.VoidVisitorAdapter;
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import java.io.FileInputStream;
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import java.util.ArrayList;
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import java.util.List;
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public class VoidVisitorExample {
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private static final String FILE_PATH = "src/main/java/org/javaparser/examples/ReversePolishNotation.java";
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public static void main(String[] args) throws Exception {
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CompilationUnit cu = JavaParser.parse(new FileInputStream(FILE_PATH));
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VoidVisitor<?> methodNameVisitor = new MethodNamePrinter();
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methodNameVisitor.visit(cu, null);
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List<String> methodNames = new ArrayList<>();
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VoidVisitor<List<String>> methodNameCollector = new MethodNameCollector();
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methodNameCollector.visit(cu, methodNames);
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methodNames.forEach(n -> System.out.println("Method Name Collected: " + n));
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}
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private static class MethodNamePrinter extends VoidVisitorAdapter<Void> {
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@Override
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public void visit(MethodDeclaration md, Void arg) {
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super.visit(md, arg);
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System.out.println("Method Name Printed: " + md.getName());
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}
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}
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private static class MethodNameCollector extends VoidVisitorAdapter<List<String>> {
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@Override
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public void visit(MethodDeclaration md, List<String> collector) {
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super.visit(md, collector);
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collector.add(md.getNameAsString());
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}
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}
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}

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