org.jooq.util.JavaWriter Maven / Gradle / Ivy
Show all versions of jooq-codegen Show documentation
package org.jooq.util;
import java.io.File;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.jooq.tools.StringUtils;
/**
* A wrapper for a {@link PrintWriter}
*
* This wrapper adds Java printing features to the general
* {@link GeneratorWriter}
*
* @author Lukas Eder
*/
public class JavaWriter extends GeneratorWriter {
private static final String SERIAL_STATEMENT = "__SERIAL_STATEMENT__";
private static final String IMPORT_STATEMENT = "__IMPORT_STATEMENT__";
private final Pattern fullyQualifiedTypes;
private final Set qualifiedTypes = new TreeSet();
private final Map unqualifiedTypes = new TreeMap();
private final String className;
private final boolean isJava;
private final boolean isScala;
private final Pattern REF_PATTERN = Pattern.compile("((?:[\\p{L}_$][\\p{L}\\p{N}_$]*\\.)*[\\p{L}_$][\\p{L}\\p{N}_$]*)((?:<.*>|\\[.*\\])*)");
private final Pattern PLAIN_GENERIC_TYPE_PATTERN = Pattern.compile("[<\\[]((?:[\\p{L}_$][\\p{L}\\p{N}_$]*\\.)*[\\p{L}_$][\\p{L}\\p{N}_$]*)[>\\]]");
public JavaWriter(File file, String fullyQualifiedTypes) {
this(file, fullyQualifiedTypes, null);
}
public JavaWriter(File file, String fullyQualifiedTypes, String encoding) {
super(file, encoding);
this.className = file.getName().replaceAll("\\.(java|scala)$", "");
this.isJava = file.getName().endsWith(".java");
this.isScala = file.getName().endsWith(".scala");
this.fullyQualifiedTypes = fullyQualifiedTypes == null ? null : Pattern.compile(fullyQualifiedTypes);
if (isJava)
tabString(" ");
else if (isScala)
tabString(" ");
}
public JavaWriter print(Class clazz) {
printClass(clazz.getCanonicalName());
return this;
}
public JavaWriter printClass(String clazz) {
print(ref(clazz));
return this;
}
public JavaWriter javadoc(String string, Object... args) {
final int t = tab();
// [#3450] [#4575] Must not print */ inside Javadoc
String escaped = escapeJavadoc(string);
Object[] escapedArgs = Arrays.copyOf(args, args.length);
for (int i = 0; i < escapedArgs.length; i++)
if (escapedArgs[i] instanceof String)
escapedArgs[i] = escapeJavadoc((String) escapedArgs[i]);
tab(t).println();
tab(t).println("/**");
tab(t).println(" * " + escaped, escapedArgs);
tab(t).println(" */");
return this;
}
private String escapeJavadoc(String string) {
// [#3450] [#4880] Must not print */ inside Javadoc
return string.replace("/*", "/ *").replace("*/", "* /");
}
public JavaWriter header(String header, Object... args) {
int t = tab();
tab(t).println();
tab(t).println("// -------------------------------------------------------------------------");
tab(t).println("// " + header, args);
tab(t).println("// -------------------------------------------------------------------------");
return this;
}
public JavaWriter override() {
println("@Override");
return this;
}
public JavaWriter overrideIf(boolean override) {
if (override) {
println("@Override");
}
return this;
}
public JavaWriter overrideInherit() {
final int t = tab();
tab(t).javadoc("{@inheritDoc}");
tab(t).println("@Override");
return this;
}
public void printSerial() {
if (isJava) {
println();
println("\tprivate static final long serialVersionUID = %s;", SERIAL_STATEMENT);
}
}
public void printImports() {
println(IMPORT_STATEMENT);
}
@Override
protected String beforeClose(String string) {
StringBuilder importString = new StringBuilder();
String pkg = "";
Matcher m = Pattern.compile("(?s:^.*?[\\r\\n]+package\\s+(.*?);?[\\r\\n]+.*?$)").matcher(string);
if (m.find())
pkg = m.group(1);
Pattern samePackagePattern = Pattern.compile(pkg + "\\.[^\\.]+");
String previous = "";
for (String imp : qualifiedTypes) {
// [#4021] For Scala interoperability, we better also import
// java.lang types
if (isJava && imp.startsWith("java.lang."))
continue;
// Don't import the class itself
if (imp.endsWith("." + className))
continue;
// [#4229] [#4531] Avoid warnings due to unnecessary same-package imports
if (pkg.length() > 0 && samePackagePattern.matcher(imp).matches())
continue;
String topLevelPackage = imp.split("\\.")[0];
if (!topLevelPackage.equals(previous))
importString.append("\n");
importString.append("import ")
.append(imp)
.append(isScala ? "\n" : ";\n");
previous = topLevelPackage;
}
string = string.replaceAll(IMPORT_STATEMENT, Matcher.quoteReplacement(importString.toString()));
string = string.replaceAll(SERIAL_STATEMENT, Matcher.quoteReplacement(String.valueOf(string.hashCode())));
return string;
}
@Override
protected List ref(List clazz, int keepSegments) {
List result = new ArrayList();
if (clazz != null) {
for (String c : clazz) {
// Skip unqualified and primitive types
if (c.contains(".")) {
// com.example.Table.TABLE.COLUMN (with keepSegments = 3)
if (fullyQualifiedTypes == null || !fullyQualifiedTypes.matcher(c).matches()) {
Matcher m = REF_PATTERN.matcher(c);
if (m.find()) {
// [com, example, Table, TABLE, COLUMN]
List split = Arrays.asList(m.group(1).split("\\."));
// com.example.Table
String qualifiedType = StringUtils.join(split.subList(0, split.size() - keepSegments + 1).toArray(), ".");
// Table
String unqualifiedType = split.get(split.size() - keepSegments);
// Table.TABLE.COLUMN
String remainder = StringUtils.join(split.subList(split.size() - keepSegments, split.size()).toArray(), ".");
if (!className.equals(unqualifiedType) &&
(!unqualifiedTypes.containsKey(unqualifiedType) || qualifiedType.equals(unqualifiedTypes.get(unqualifiedType)))) {
unqualifiedTypes.put(unqualifiedType, qualifiedType);
qualifiedTypes.add(qualifiedType);
String generic = m.group(2);
// Consider importing generic type arguments, recursively
c = remainder
+ (PLAIN_GENERIC_TYPE_PATTERN.matcher(generic).matches()
? generic.substring(0, 1) + ref(generic.substring(1, generic.length() - 1)) + generic.substring(generic.length() - 1)
: generic);
}
}
}
}
// If any of the above tests fail, c will remain the unchanged,
// fully qualified type name.
result.add(c);
}
}
return result;
}
}