--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/Pretty.java Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,1224 @@
+/*
+ * Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation. Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ */
+
+package com.sun.tools.javac.tree;
+
+import java.io.*;
+import java.util.*;
+
+import com.sun.tools.javac.util.*;
+import com.sun.tools.javac.util.List;
+import com.sun.tools.javac.code.*;
+
+import com.sun.tools.javac.code.Symbol.*;
+import com.sun.tools.javac.tree.JCTree.*;
+
+import static com.sun.tools.javac.code.Flags.*;
+
+/** Prints out a tree as an indented Java source program.
+ *
+ * <p><b>This is NOT part of any API supported by Sun Microsystems. 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);
+ }
+ }
+}