/**
* Programmatic interface for main function.
*
* @param args The command line parameters.
*/
public int compile(
String[] args,
Context context,
List<JavaFileObject> fileObjects,
Iterable<? extends Processor> processors) {
if (options == null) options = Options.instance(context); // creates a new one
filenames = new ListBuffer<File>();
classnames = new ListBuffer<String>();
JavaCompiler comp = null;
/*
* TODO: Logic below about what is an acceptable command line
* should be updated to take annotation processing semantics
* into account.
*/
try {
if (args.length == 0 && fileObjects.isEmpty()) {
help();
return EXIT_CMDERR;
}
List<File> files;
try {
files = processArgs(CommandLine.parse(args));
if (files == null) {
// null signals an error in options, abort
return EXIT_CMDERR;
} else if (files.isEmpty() && fileObjects.isEmpty() && classnames.isEmpty()) {
// it is allowed to compile nothing if just asking for help or version info
if (options.get("-help") != null
|| options.get("-X") != null
|| options.get("-version") != null
|| options.get("-fullversion") != null) return EXIT_OK;
error("err.no.source.files");
return EXIT_CMDERR;
}
} catch (java.io.FileNotFoundException e) {
Log.printLines(
out, ownName + ": " + getLocalizedString("err.file.not.found", e.getMessage()));
return EXIT_SYSERR;
}
boolean forceStdOut = options.get("stdout") != null;
if (forceStdOut) {
out.flush();
out = new PrintWriter(System.out, true);
}
context.put(Log.outKey, out);
// allow System property in following line as a Mustang legacy
boolean batchMode =
(options.get("nonBatchMode") == null && System.getProperty("nonBatchMode") == null);
if (batchMode) CacheFSInfo.preRegister(context);
fileManager = context.get(JavaFileManager.class);
comp = JavaCompiler.instance(context);
if (comp == null) return EXIT_SYSERR;
if (!files.isEmpty()) {
// add filenames to fileObjects
comp = JavaCompiler.instance(context);
List<JavaFileObject> otherFiles = List.nil();
JavacFileManager dfm = (JavacFileManager) fileManager;
for (JavaFileObject fo : dfm.getJavaFileObjectsFromFiles(files))
otherFiles = otherFiles.prepend(fo);
for (JavaFileObject fo : otherFiles) fileObjects = fileObjects.prepend(fo);
}
comp.compile(fileObjects, classnames.toList(), processors);
if (comp.errorCount() != 0) return EXIT_ERROR;
} catch (IOException ex) {
ioMessage(ex);
return EXIT_SYSERR;
} catch (OutOfMemoryError ex) {
resourceMessage(ex);
return EXIT_SYSERR;
} catch (StackOverflowError ex) {
resourceMessage(ex);
return EXIT_SYSERR;
} catch (FatalError ex) {
feMessage(ex);
return EXIT_SYSERR;
} catch (AnnotationProcessingError ex) {
apMessage(ex);
return EXIT_SYSERR;
} catch (ClientCodeException ex) {
// as specified by javax.tools.JavaCompiler#getTask
// and javax.tools.JavaCompiler.CompilationTask#call
throw new RuntimeException(ex.getCause());
} catch (PropagatedException ex) {
throw ex.getCause();
} catch (Throwable ex) {
// Nasty. If we've already reported an error, compensate
// for buggy compiler error recovery by swallowing thrown
// exceptions.
if (comp == null || comp.errorCount() == 0 || options == null || options.get("dev") != null)
bugMessage(ex);
return EXIT_ABNORMAL;
} finally {
if (comp != null) comp.close();
filenames = null;
options = null;
}
return EXIT_OK;
}
/**
* Prints out a tree as an indented Java source program.
*
* <p>
*
* <p><b>This is NOT part of any supported API. If you write code that depends on this, you do so at
* your own risk. This code and its internal interfaces are subject to change or deletion without
* notice.</b>
*/
public class Pretty extends JCTree.Visitor {
public Pretty(Writer out, boolean sourceOutput) {
this.out = out;
this.sourceOutput = sourceOutput;
}
/**
* Set when we are producing source output. If we're not producing source output, we can sometimes
* give more detail in the output even though that detail would not be valid java soruce.
*/
private final boolean sourceOutput;
/** The output stream on which trees are printed. */
Writer out;
/** Indentation width (can be reassigned from outside). */
public int width = 4;
/** The current left margin. */
int lmargin = 0;
/** The enclosing class name. */
Name enclClassName;
/** A hashtable mapping trees to their documentation comments (can be null) */
Map<JCTree, String> docComments = null;
/** Align code to be indented to left margin. */
void align() throws IOException {
for (int i = 0; i < lmargin; i++) out.write(" ");
}
/** Increase left margin by indentation width. */
void indent() {
lmargin = lmargin + width;
}
/** Decrease left margin by indentation width. */
void undent() {
lmargin = lmargin - width;
}
/**
* Enter a new precedence level. Emit a `(' if new precedence level is less than precedence level
* so far.
*
* @param contextPrec The precedence level in force so far.
* @param ownPrec The new precedence level.
*/
void open(int contextPrec, int ownPrec) throws IOException {
if (ownPrec < contextPrec) out.write("(");
}
/**
* Leave precedence level. Emit a `(' if inner precedence level is less than precedence level we
* revert to.
*
* @param contextPrec The precedence level we revert to.
* @param ownPrec The inner precedence level.
*/
void close(int contextPrec, int ownPrec) throws IOException {
if (ownPrec < contextPrec) out.write(")");
}
/** Print string, replacing all non-ascii character with unicode escapes. */
public void print(Object s) throws IOException {
out.write(Convert.escapeUnicode(s.toString()));
}
/** Print new line. */
public void println() throws IOException {
out.write(lineSep);
}
String lineSep = System.getProperty("line.separator");
/**
* ************************************************************************ Traversal methods
* ***********************************************************************
*/
/** Exception to propogate IOException through visitXXX methods */
private static class UncheckedIOException extends Error {
static final long serialVersionUID = -4032692679158424751L;
UncheckedIOException(IOException e) {
super(e.getMessage(), e);
}
}
/** Visitor argument: the current precedence level. */
int prec;
/**
* Visitor method: print expression tree.
*
* @param prec The current precedence level.
*/
public void printExpr(JCTree tree, int prec) throws IOException {
int prevPrec = this.prec;
try {
this.prec = prec;
if (tree == null) print("/*missing*/");
else {
tree.accept(this);
}
} catch (UncheckedIOException ex) {
IOException e = new IOException(ex.getMessage());
e.initCause(ex);
throw e;
} finally {
this.prec = prevPrec;
}
}
/** Derived visitor method: print expression tree at minimum precedence level for expression. */
public void printExpr(JCTree tree) throws IOException {
printExpr(tree, TreeInfo.noPrec);
}
/** Derived visitor method: print statement tree. */
public void printStat(JCTree tree) throws IOException {
printExpr(tree, TreeInfo.notExpression);
}
/**
* Derived visitor method: print list of expression trees, separated by given string.
*
* @param sep the separator string
*/
public <T extends JCTree> void printExprs(List<T> trees, String sep) throws IOException {
if (trees.nonEmpty()) {
printExpr(trees.head);
for (List<T> l = trees.tail; l.nonEmpty(); l = l.tail) {
print(sep);
printExpr(l.head);
}
}
}
/** Derived visitor method: print list of expression trees, separated by commas. */
public <T extends JCTree> void printExprs(List<T> trees) throws IOException {
printExprs(trees, ", ");
}
/** Derived visitor method: print list of statements, each on a separate line. */
public void printStats(List<? extends JCTree> trees) throws IOException {
for (List<? extends JCTree> l = trees; l.nonEmpty(); l = l.tail) {
align();
printStat(l.head);
println();
}
}
/** Print a set of modifiers. */
public void printFlags(long flags) throws IOException {
if ((flags & SYNTHETIC) != 0) print("/*synthetic*/ ");
print(TreeInfo.flagNames(flags));
if ((flags & StandardFlags) != 0) print(" ");
if ((flags & ANNOTATION) != 0) print("@");
}
public void printAnnotations(List<JCAnnotation> trees) throws IOException {
for (List<JCAnnotation> l = trees; l.nonEmpty(); l = l.tail) {
printStat(l.head);
println();
align();
}
}
/**
* Print documentation comment, if it exists
*
* @param tree The tree for which a documentation comment should be printed.
*/
public void printDocComment(JCTree tree) throws IOException {
if (docComments != null) {
String dc = docComments.get(tree);
if (dc != null) {
print("/**");
println();
int pos = 0;
int endpos = lineEndPos(dc, pos);
while (pos < dc.length()) {
align();
print(" *");
if (pos < dc.length() && dc.charAt(pos) > ' ') print(" ");
print(dc.substring(pos, endpos));
println();
pos = endpos + 1;
endpos = lineEndPos(dc, pos);
}
align();
print(" */");
println();
align();
}
}
}
// where
static int lineEndPos(String s, int start) {
int pos = s.indexOf('\n', start);
if (pos < 0) pos = s.length();
return pos;
}
/** If type parameter list is non-empty, print it enclosed in "<...>" brackets. */
public void printTypeParameters(List<JCTypeParameter> trees) throws IOException {
if (trees.nonEmpty()) {
print("<");
printExprs(trees);
print(">");
}
}
/** Print a block. */
public void printBlock(List<? extends JCTree> stats) throws IOException {
print("{");
println();
indent();
printStats(stats);
undent();
align();
print("}");
}
/** Print a block. */
public void printEnumBody(List<JCTree> stats) throws IOException {
print("{");
println();
indent();
boolean first = true;
for (List<JCTree> l = stats; l.nonEmpty(); l = l.tail) {
if (isEnumerator(l.head)) {
if (!first) {
print(",");
println();
}
align();
printStat(l.head);
first = false;
}
}
print(";");
println();
for (List<JCTree> l = stats; l.nonEmpty(); l = l.tail) {
if (!isEnumerator(l.head)) {
align();
printStat(l.head);
println();
}
}
undent();
align();
print("}");
}
/** Is the given tree an enumerator definition? */
boolean isEnumerator(JCTree t) {
return t.getTag() == JCTree.VARDEF && (((JCVariableDecl) t).mods.flags & ENUM) != 0;
}
/**
* Print unit consisting of package clause and import statements in toplevel, followed by class
* definition. if class definition == null, print all definitions in toplevel.
*
* @param tree The toplevel tree
* @param cdef The class definition, which is assumed to be part of the toplevel tree.
*/
public void printUnit(JCCompilationUnit tree, JCClassDecl cdef) throws IOException {
docComments = tree.docComments;
printDocComment(tree);
if (tree.pid != null) {
print("package ");
printExpr(tree.pid);
print(";");
println();
}
boolean firstImport = true;
for (List<JCTree> l = tree.defs;
l.nonEmpty() && (cdef == null || l.head.getTag() == JCTree.IMPORT);
l = l.tail) {
if (l.head.getTag() == JCTree.IMPORT) {
JCImport imp = (JCImport) l.head;
Name name = TreeInfo.name(imp.qualid);
if (name == name.table.asterisk
|| cdef == null
|| isUsed(TreeInfo.symbol(imp.qualid), cdef)) {
if (firstImport) {
firstImport = false;
println();
}
printStat(imp);
}
} else {
printStat(l.head);
}
}
if (cdef != null) {
printStat(cdef);
println();
}
}
// where
boolean isUsed(final Symbol t, JCTree cdef) {
class UsedVisitor extends TreeScanner {
public void scan(JCTree tree) {
if (tree != null && !result) tree.accept(this);
}
boolean result = false;
public void visitIdent(JCIdent tree) {
if (tree.sym == t) result = true;
}
}
UsedVisitor v = new UsedVisitor();
v.scan(cdef);
return v.result;
}
/**
* ************************************************************************ Visitor methods
* ***********************************************************************
*/
public void visitTopLevel(JCCompilationUnit tree) {
try {
printUnit(tree, null);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitImport(JCImport tree) {
try {
print("import ");
if (tree.staticImport) print("static ");
printExpr(tree.qualid);
print(";");
println();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitClassDef(JCClassDecl tree) {
try {
println();
align();
printDocComment(tree);
printAnnotations(tree.mods.annotations);
printFlags(tree.mods.flags & ~INTERFACE);
Name enclClassNamePrev = enclClassName;
enclClassName = tree.name;
if ((tree.mods.flags & INTERFACE) != 0) {
print("interface " + tree.name);
printTypeParameters(tree.typarams);
if (tree.implementing.nonEmpty()) {
print(" extends ");
printExprs(tree.implementing);
}
} else {
if ((tree.mods.flags & ENUM) != 0) print("enum " + tree.name);
else print("class " + tree.name);
printTypeParameters(tree.typarams);
if (tree.extending != null) {
print(" extends ");
printExpr(tree.extending);
}
if (tree.implementing.nonEmpty()) {
print(" implements ");
printExprs(tree.implementing);
}
}
print(" ");
if ((tree.mods.flags & ENUM) != 0) {
printEnumBody(tree.defs);
} else {
printBlock(tree.defs);
}
enclClassName = enclClassNamePrev;
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitMethodDef(JCMethodDecl tree) {
try {
// when producing source output, omit anonymous constructors
if (tree.name == tree.name.table.init && enclClassName == null && sourceOutput) return;
println();
align();
printDocComment(tree);
printExpr(tree.mods);
printTypeParameters(tree.typarams);
if (tree.name == tree.name.table.init) {
print(enclClassName != null ? enclClassName : tree.name);
} else {
printExpr(tree.restype);
print(" " + tree.name);
}
print("(");
printExprs(tree.params);
print(")");
if (tree.thrown.nonEmpty()) {
print(" throws ");
printExprs(tree.thrown);
}
if (tree.body != null) {
print(" ");
printStat(tree.body);
} else {
print(";");
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitVarDef(JCVariableDecl tree) {
try {
if (docComments != null && docComments.get(tree) != null) {
println();
align();
}
printDocComment(tree);
if ((tree.mods.flags & ENUM) != 0) {
print("/*public static final*/ ");
print(tree.name);
if (tree.init != null) {
print(" /* = ");
printExpr(tree.init);
print(" */");
}
} else {
printExpr(tree.mods);
if ((tree.mods.flags & VARARGS) != 0) {
printExpr(((JCArrayTypeTree) tree.vartype).elemtype);
print("... " + tree.name);
} else {
printExpr(tree.vartype);
print(" " + tree.name);
}
if (tree.init != null) {
print(" = ");
printExpr(tree.init);
}
if (prec == TreeInfo.notExpression) print(";");
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitSkip(JCSkip tree) {
try {
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitBlock(JCBlock tree) {
try {
printFlags(tree.flags);
printBlock(tree.stats);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitDoLoop(JCDoWhileLoop tree) {
try {
print("do ");
printStat(tree.body);
align();
print(" while ");
if (tree.cond.getTag() == JCTree.PARENS) {
printExpr(tree.cond);
} else {
print("(");
printExpr(tree.cond);
print(")");
}
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitWhileLoop(JCWhileLoop tree) {
try {
print("while ");
if (tree.cond.getTag() == JCTree.PARENS) {
printExpr(tree.cond);
} else {
print("(");
printExpr(tree.cond);
print(")");
}
print(" ");
printStat(tree.body);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitForLoop(JCForLoop tree) {
try {
print("for (");
if (tree.init.nonEmpty()) {
if (tree.init.head.getTag() == JCTree.VARDEF) {
printExpr(tree.init.head);
for (List<JCStatement> l = tree.init.tail; l.nonEmpty(); l = l.tail) {
JCVariableDecl vdef = (JCVariableDecl) l.head;
print(", " + vdef.name + " = ");
printExpr(vdef.init);
}
} else {
printExprs(tree.init);
}
}
print("; ");
if (tree.cond != null) printExpr(tree.cond);
print("; ");
printExprs(tree.step);
print(") ");
printStat(tree.body);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitForeachLoop(JCEnhancedForLoop tree) {
try {
print("for (");
printExpr(tree.var);
print(" : ");
printExpr(tree.expr);
print(") ");
printStat(tree.body);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitLabelled(JCLabeledStatement tree) {
try {
print(tree.label + ": ");
printStat(tree.body);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitSwitch(JCSwitch tree) {
try {
print("switch ");
if (tree.selector.getTag() == JCTree.PARENS) {
printExpr(tree.selector);
} else {
print("(");
printExpr(tree.selector);
print(")");
}
print(" {");
println();
printStats(tree.cases);
align();
print("}");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitCase(JCCase tree) {
try {
if (tree.pat == null) {
print("default");
} else {
print("case ");
printExpr(tree.pat);
}
print(": ");
println();
indent();
printStats(tree.stats);
undent();
align();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitSynchronized(JCSynchronized tree) {
try {
print("synchronized ");
if (tree.lock.getTag() == JCTree.PARENS) {
printExpr(tree.lock);
} else {
print("(");
printExpr(tree.lock);
print(")");
}
print(" ");
printStat(tree.body);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTry(JCTry tree) {
try {
print("try ");
printStat(tree.body);
for (List<JCCatch> l = tree.catchers; l.nonEmpty(); l = l.tail) {
printStat(l.head);
}
if (tree.finalizer != null) {
print(" finally ");
printStat(tree.finalizer);
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitCatch(JCCatch tree) {
try {
print(" catch (");
printExpr(tree.param);
print(") ");
printStat(tree.body);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitConditional(JCConditional tree) {
try {
open(prec, TreeInfo.condPrec);
printExpr(tree.cond, TreeInfo.condPrec);
print(" ? ");
printExpr(tree.truepart, TreeInfo.condPrec);
print(" : ");
printExpr(tree.falsepart, TreeInfo.condPrec);
close(prec, TreeInfo.condPrec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitIf(JCIf tree) {
try {
print("if ");
if (tree.cond.getTag() == JCTree.PARENS) {
printExpr(tree.cond);
} else {
print("(");
printExpr(tree.cond);
print(")");
}
print(" ");
printStat(tree.thenpart);
if (tree.elsepart != null) {
print(" else ");
printStat(tree.elsepart);
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitExec(JCExpressionStatement tree) {
try {
printExpr(tree.expr);
if (prec == TreeInfo.notExpression) print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitBreak(JCBreak tree) {
try {
print("break");
if (tree.label != null) print(" " + tree.label);
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitContinue(JCContinue tree) {
try {
print("continue");
if (tree.label != null) print(" " + tree.label);
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitReturn(JCReturn tree) {
try {
print("return");
if (tree.expr != null) {
print(" ");
printExpr(tree.expr);
}
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitThrow(JCThrow tree) {
try {
print("throw ");
printExpr(tree.expr);
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitAssert(JCAssert tree) {
try {
print("assert ");
printExpr(tree.cond);
if (tree.detail != null) {
print(" : ");
printExpr(tree.detail);
}
print(";");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitApply(JCMethodInvocation tree) {
try {
if (!tree.typeargs.isEmpty()) {
if (tree.meth.getTag() == JCTree.SELECT) {
JCFieldAccess left = (JCFieldAccess) tree.meth;
printExpr(left.selected);
print(".<");
printExprs(tree.typeargs);
print(">" + left.name);
} else {
print("<");
printExprs(tree.typeargs);
print(">");
printExpr(tree.meth);
}
} else {
printExpr(tree.meth);
}
print("(");
printExprs(tree.args);
print(")");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitNewClass(JCNewClass tree) {
try {
if (tree.encl != null) {
printExpr(tree.encl);
print(".");
}
print("new ");
if (!tree.typeargs.isEmpty()) {
print("<");
printExprs(tree.typeargs);
print(">");
}
printExpr(tree.clazz);
print("(");
printExprs(tree.args);
print(")");
if (tree.def != null) {
Name enclClassNamePrev = enclClassName;
enclClassName =
tree.def.name != null
? tree.def.name
: tree.type != null && tree.type.tsym.name != tree.type.tsym.name.table.empty
? tree.type.tsym.name
: null;
if ((tree.def.mods.flags & Flags.ENUM) != 0) print("/*enum*/");
printBlock(tree.def.defs);
enclClassName = enclClassNamePrev;
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitNewArray(JCNewArray tree) {
try {
if (tree.elemtype != null) {
print("new ");
JCTree elem = tree.elemtype;
if (elem instanceof JCArrayTypeTree) printBaseElementType((JCArrayTypeTree) elem);
else printExpr(elem);
for (List<JCExpression> l = tree.dims; l.nonEmpty(); l = l.tail) {
print("[");
printExpr(l.head);
print("]");
}
if (elem instanceof JCArrayTypeTree) printBrackets((JCArrayTypeTree) elem);
}
if (tree.elems != null) {
if (tree.elemtype != null) print("[]");
print("{");
printExprs(tree.elems);
print("}");
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitParens(JCParens tree) {
try {
print("(");
printExpr(tree.expr);
print(")");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitAssign(JCAssign tree) {
try {
open(prec, TreeInfo.assignPrec);
printExpr(tree.lhs, TreeInfo.assignPrec + 1);
print(" = ");
printExpr(tree.rhs, TreeInfo.assignPrec);
close(prec, TreeInfo.assignPrec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public String operatorName(int tag) {
switch (tag) {
case JCTree.POS:
return "+";
case JCTree.NEG:
return "-";
case JCTree.NOT:
return "!";
case JCTree.COMPL:
return "~";
case JCTree.PREINC:
return "++";
case JCTree.PREDEC:
return "--";
case JCTree.POSTINC:
return "++";
case JCTree.POSTDEC:
return "--";
case JCTree.NULLCHK:
return "<*nullchk*>";
case JCTree.OR:
return "||";
case JCTree.AND:
return "&&";
case JCTree.EQ:
return "==";
case JCTree.NE:
return "!=";
case JCTree.LT:
return "<";
case JCTree.GT:
return ">";
case JCTree.LE:
return "<=";
case JCTree.GE:
return ">=";
case JCTree.BITOR:
return "|";
case JCTree.BITXOR:
return "^";
case JCTree.BITAND:
return "&";
case JCTree.SL:
return "<<";
case JCTree.SR:
return ">>";
case JCTree.USR:
return ">>>";
case JCTree.PLUS:
return "+";
case JCTree.MINUS:
return "-";
case JCTree.MUL:
return "*";
case JCTree.DIV:
return "/";
case JCTree.MOD:
return "%";
default:
throw new Error();
}
}
public void visitAssignop(JCAssignOp tree) {
try {
open(prec, TreeInfo.assignopPrec);
printExpr(tree.lhs, TreeInfo.assignopPrec + 1);
print(" " + operatorName(tree.getTag() - JCTree.ASGOffset) + "= ");
printExpr(tree.rhs, TreeInfo.assignopPrec);
close(prec, TreeInfo.assignopPrec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitUnary(JCUnary tree) {
try {
int ownprec = TreeInfo.opPrec(tree.getTag());
String opname = operatorName(tree.getTag());
open(prec, ownprec);
if (tree.getTag() <= JCTree.PREDEC) {
print(opname);
printExpr(tree.arg, ownprec);
} else {
printExpr(tree.arg, ownprec);
print(opname);
}
close(prec, ownprec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitBinary(JCBinary tree) {
try {
int ownprec = TreeInfo.opPrec(tree.getTag());
String opname = operatorName(tree.getTag());
open(prec, ownprec);
printExpr(tree.lhs, ownprec);
print(" " + opname + " ");
printExpr(tree.rhs, ownprec + 1);
close(prec, ownprec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTypeCast(JCTypeCast tree) {
try {
open(prec, TreeInfo.prefixPrec);
print("(");
printExpr(tree.clazz);
print(")");
printExpr(tree.expr, TreeInfo.prefixPrec);
close(prec, TreeInfo.prefixPrec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTypeTest(JCInstanceOf tree) {
try {
open(prec, TreeInfo.ordPrec);
printExpr(tree.expr, TreeInfo.ordPrec);
print(" instanceof ");
printExpr(tree.clazz, TreeInfo.ordPrec + 1);
close(prec, TreeInfo.ordPrec);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitIndexed(JCArrayAccess tree) {
try {
printExpr(tree.indexed, TreeInfo.postfixPrec);
print("[");
printExpr(tree.index);
print("]");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitSelect(JCFieldAccess tree) {
try {
printExpr(tree.selected, TreeInfo.postfixPrec);
print("." + tree.name);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitIdent(JCIdent tree) {
try {
print(tree.name);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitLiteral(JCLiteral tree) {
try {
switch (tree.typetag) {
case TypeTags.INT:
print(tree.value.toString());
break;
case TypeTags.LONG:
print(tree.value + "L");
break;
case TypeTags.FLOAT:
print(tree.value + "F");
break;
case TypeTags.DOUBLE:
print(tree.value.toString());
break;
case TypeTags.CHAR:
print(
"\'" + Convert.quote(String.valueOf((char) ((Number) tree.value).intValue())) + "\'");
break;
case TypeTags.BOOLEAN:
print(((Number) tree.value).intValue() == 1 ? "true" : "false");
break;
case TypeTags.BOT:
print("null");
break;
default:
print("\"" + Convert.quote(tree.value.toString()) + "\"");
break;
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTypeIdent(JCPrimitiveTypeTree tree) {
try {
switch (tree.typetag) {
case TypeTags.BYTE:
print("byte");
break;
case TypeTags.CHAR:
print("char");
break;
case TypeTags.SHORT:
print("short");
break;
case TypeTags.INT:
print("int");
break;
case TypeTags.LONG:
print("long");
break;
case TypeTags.FLOAT:
print("float");
break;
case TypeTags.DOUBLE:
print("double");
break;
case TypeTags.BOOLEAN:
print("boolean");
break;
case TypeTags.VOID:
print("void");
break;
default:
print("error");
break;
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTypeArray(JCArrayTypeTree tree) {
try {
printBaseElementType(tree);
printBrackets(tree);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
// Prints the inner element type of a nested array
private void printBaseElementType(JCArrayTypeTree tree) throws IOException {
JCTree elem = tree.elemtype;
while (elem instanceof JCWildcard) elem = ((JCWildcard) elem).inner;
if (elem instanceof JCArrayTypeTree) printBaseElementType((JCArrayTypeTree) elem);
else printExpr(elem);
}
// prints the brackets of a nested array in reverse order
private void printBrackets(JCArrayTypeTree tree) throws IOException {
JCTree elem;
while (true) {
elem = tree.elemtype;
print("[]");
if (!(elem instanceof JCArrayTypeTree)) break;
tree = (JCArrayTypeTree) elem;
}
}
public void visitTypeApply(JCTypeApply tree) {
try {
printExpr(tree.clazz);
print("<");
printExprs(tree.arguments);
print(">");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTypeParameter(JCTypeParameter tree) {
try {
print(tree.name);
if (tree.bounds.nonEmpty()) {
print(" extends ");
printExprs(tree.bounds, " & ");
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
@Override
public void visitWildcard(JCWildcard tree) {
try {
print(tree.kind);
if (tree.kind.kind != BoundKind.UNBOUND) printExpr(tree.inner);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
@Override
public void visitTypeBoundKind(TypeBoundKind tree) {
try {
print(String.valueOf(tree.kind));
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitErroneous(JCErroneous tree) {
try {
print("(ERROR)");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitLetExpr(LetExpr tree) {
try {
print("(let " + tree.defs + " in " + tree.expr + ")");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitModifiers(JCModifiers mods) {
try {
printAnnotations(mods.annotations);
printFlags(mods.flags);
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitAnnotation(JCAnnotation tree) {
try {
print("@");
printExpr(tree.annotationType);
print("(");
printExprs(tree.args);
print(")");
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
public void visitTree(JCTree tree) {
try {
print("(UNKNOWN: " + tree + ")");
println();
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
}