com.greenpepper.shaded.org.codehaus.janino.UnparseVisitor Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] compiler
*
* Copyright (c) 2001-2010, Arno Unkrig
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package com.greenpepper.shaded.org.codehaus.janino;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.StringReader;
import java.io.Writer;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import com.greenpepper.shaded.org.codehaus.janino.Java.Annotation;
import com.greenpepper.shaded.org.codehaus.janino.Java.Rvalue;
import com.greenpepper.shaded.org.codehaus.janino.util.AutoIndentWriter;
/**
* A visitor that unparses (un-compiles) an AST to a {@link Writer}. See {@link #main(String[])} for a usage example.
*/
@SuppressWarnings({ "rawtypes", "unchecked" }) public
class UnparseVisitor implements Visitor.ComprehensiveVisitor {
/**
* Where the {@code visit...()} methods print their text. Noice that this {@link PrintWriter} does not print to
* the output directly, but through an {@link AutoIndentWriter}.
*/
protected final PrintWriter pw;
/**
* Testing of parsing/unparsing.
*
* Reads compilation units from the files named on the command line
* and unparses them to {@link System#out}.
*/
public static void
main(String[] args) throws Exception {
Writer w = new BufferedWriter(new OutputStreamWriter(System.out));
for (String fileName : args) {
// Parse each compilation unit.
FileReader r = new FileReader(fileName);
Java.CompilationUnit cu;
try {
cu = new Parser(new Scanner(fileName, r)).parseCompilationUnit();
} finally {
r.close();
}
// Unparse each compilation unit.
UnparseVisitor.unparse(cu, w);
}
w.flush();
}
/** Unparses the given {@link Java.CompilationUnit} to the given {@link Writer}. */
public static void
unparse(Java.CompilationUnit cu, Writer w) {
UnparseVisitor uv = new UnparseVisitor(w);
uv.unparseCompilationUnit(cu);
uv.close();
}
public
UnparseVisitor(Writer w) {
this.pw = new PrintWriter(new AutoIndentWriter(w), true);
}
/** Flushes all generated code. */
public void
close() { this.pw.flush(); }
/** @param cu The compilation unit to unparse */
public void
unparseCompilationUnit(Java.CompilationUnit cu) {
if (cu.optionalPackageDeclaration != null) {
this.pw.println();
this.pw.println("package " + cu.optionalPackageDeclaration.packageName + ';');
}
if (!cu.importDeclarations.isEmpty()) {
this.pw.println();
for (Java.CompilationUnit.ImportDeclaration id : cu.importDeclarations) id.accept(this);
}
for (Java.PackageMemberTypeDeclaration pmtd : cu.packageMemberTypeDeclarations) {
this.pw.println();
this.unparseTypeDeclaration(pmtd);
this.pw.println();
}
}
@Override public void
visitSingleTypeImportDeclaration(Java.CompilationUnit.SingleTypeImportDeclaration stid) {
this.pw.println("import " + Java.join(stid.identifiers, ".") + ';');
}
@Override public void
visitTypeImportOnDemandDeclaration(Java.CompilationUnit.TypeImportOnDemandDeclaration tiodd) {
this.pw.println("import " + Java.join(tiodd.identifiers, ".") + ".*;");
}
@Override public void
visitSingleStaticImportDeclaration(Java.CompilationUnit.SingleStaticImportDeclaration ssid) {
this.pw.println("import static " + Java.join(ssid.identifiers, ".") + ';');
}
@Override public void
visitStaticImportOnDemandDeclaration(Java.CompilationUnit.StaticImportOnDemandDeclaration siodd) {
this.pw.println("import static " + Java.join(siodd.identifiers, ".") + ".*;");
}
@Override public void
visitLocalClassDeclaration(Java.LocalClassDeclaration lcd) {
this.unparseNamedClassDeclaration(lcd);
}
@Override public void
visitMemberClassDeclaration(Java.MemberClassDeclaration mcd) {
this.unparseNamedClassDeclaration(mcd);
}
@Override public void
visitMemberInterfaceDeclaration(Java.MemberInterfaceDeclaration mid) {
this.unparseInterfaceDeclaration(mid);
}
@Override public void
visitPackageMemberClassDeclaration(Java.PackageMemberClassDeclaration pmcd) {
this.unparseNamedClassDeclaration(pmcd);
}
@Override public void
visitPackageMemberInterfaceDeclaration(Java.PackageMemberInterfaceDeclaration pmid) {
this.unparseInterfaceDeclaration(pmid);
}
@Override public void
visitConstructorDeclarator(Java.ConstructorDeclarator cd) {
this.unparseDocComment(cd);
this.unparseAnnotations(cd.modifiers.annotations);
this.unparseModifiers(cd.modifiers.flags);
Java.ClassDeclaration declaringClass = cd.getDeclaringClass();
this.pw.print(
declaringClass instanceof Java.NamedClassDeclaration
? ((Java.NamedClassDeclaration) declaringClass).name
: "UNNAMED"
);
this.unparseFunctionDeclaratorRest(cd);
this.pw.print(' ');
if (cd.optionalConstructorInvocation != null) {
this.pw.println('{');
this.pw.print(AutoIndentWriter.INDENT);
this.unparseBlockStatement(cd.optionalConstructorInvocation);
this.pw.println(';');
if (!cd.optionalStatements.isEmpty()) {
this.pw.println();
this.unparseStatements(cd.optionalStatements);
}
this.pw.print(AutoIndentWriter.UNINDENT + "}");
} else
if (cd.optionalStatements.isEmpty()) {
this.pw.print("{}");
} else
{
this.pw.println('{');
this.pw.print(AutoIndentWriter.INDENT);
this.unparseStatements(cd.optionalStatements);
this.pw.print(AutoIndentWriter.UNINDENT + "}");
}
}
@Override public void
visitMethodDeclarator(Java.MethodDeclarator md) {
this.unparseDocComment(md);
this.unparseAnnotations(md.modifiers.annotations);
this.unparseModifiers(md.modifiers.flags);
this.unparseType(md.type);
this.pw.print(' ' + md.name);
this.unparseFunctionDeclaratorRest(md);
if (md.optionalStatements == null) {
this.pw.print(';');
} else
if (md.optionalStatements.isEmpty()) {
this.pw.print(" {}");
} else
{
this.pw.println(" {");
this.pw.print(AutoIndentWriter.INDENT);
this.unparseStatements(md.optionalStatements);
this.pw.print(AutoIndentWriter.UNINDENT);
this.pw.print('}');
}
}
@Override public void
visitFieldDeclaration(Java.FieldDeclaration fd) {
this.unparseDocComment(fd);
this.unparseAnnotations(fd.modifiers.annotations);
this.unparseModifiers(fd.modifiers.flags);
this.unparseType(fd.type);
this.pw.print(' ');
for (int i = 0; i < fd.variableDeclarators.length; ++i) {
if (i > 0) this.pw.print(", ");
this.unparseVariableDeclarator(fd.variableDeclarators[i]);
}
this.pw.print(';');
}
@Override public void
visitInitializer(Java.Initializer i) {
if (i.statiC) this.pw.print("static ");
this.unparseBlockStatement(i.block);
}
@Override public void
visitBlock(Java.Block b) {
if (b.statements.isEmpty()) {
this.pw.print("{}");
return;
}
this.pw.println('{');
this.pw.print(AutoIndentWriter.INDENT);
this.unparseStatements(b.statements);
this.pw.print(AutoIndentWriter.UNINDENT + "}");
}
private void
unparseStatements(List statements) {
int state = -1;
for (Java.BlockStatement bs : statements) {
int x = (
bs instanceof Java.Block ? 1 :
bs instanceof Java.LocalClassDeclarationStatement ? 2 :
bs instanceof Java.LocalVariableDeclarationStatement ? 3 :
bs instanceof Java.SynchronizedStatement ? 4 :
99
);
if (state != -1 && state != x) this.pw.println(AutoIndentWriter.CLEAR_TABULATORS);
state = x;
this.unparseBlockStatement(bs);
this.pw.println();
}
}
@Override public void
visitBreakStatement(Java.BreakStatement bs) {
this.pw.print("break");
if (bs.optionalLabel != null) this.pw.print(' ' + bs.optionalLabel);
this.pw.print(';');
}
@Override public void
visitContinueStatement(Java.ContinueStatement cs) {
this.pw.print("continue");
if (cs.optionalLabel != null) this.pw.print(' ' + cs.optionalLabel);
this.pw.print(';');
}
@Override public void
visitAssertStatement(Java.AssertStatement as) {
this.pw.print("assert ");
this.unparse(as.expression1);
if (as.optionalExpression2 != null) {
this.pw.print(" : ");
this.unparse(as.optionalExpression2);
}
this.pw.print(';');
}
@Override public void
visitDoStatement(Java.DoStatement ds) {
this.pw.print("do ");
this.unparseBlockStatement(ds.body);
this.pw.print("while (");
this.unparse(ds.condition);
this.pw.print(");");
}
@Override public void
visitEmptyStatement(Java.EmptyStatement es) {
this.pw.print(';');
}
@Override public void
visitExpressionStatement(Java.ExpressionStatement es) {
this.unparse(es.rvalue);
this.pw.print(';');
}
@Override public void
visitForStatement(Java.ForStatement fs) {
this.pw.print("for (");
if (fs.optionalInit != null) {
this.unparseBlockStatement(fs.optionalInit);
} else {
this.pw.print(';');
}
if (fs.optionalCondition != null) {
this.pw.print(' ');
this.unparse(fs.optionalCondition);
}
this.pw.print(';');
if (fs.optionalUpdate != null) {
this.pw.print(' ');
for (int i = 0; i < fs.optionalUpdate.length; ++i) {
if (i > 0) this.pw.print(", ");
this.unparse(fs.optionalUpdate[i]);
}
}
this.pw.print(") ");
this.unparseBlockStatement(fs.body);
}
@Override public void
visitForEachStatement(Java.ForEachStatement fes) {
this.pw.print("for (");
this.unparseFormalParameter(fes.currentElement, false);
this.pw.print(" : ");
this.unparse(fes.expression);
this.pw.print(") ");
this.unparseBlockStatement(fes.body);
}
@Override public void
visitIfStatement(Java.IfStatement is) {
this.pw.print("if (");
this.unparse(is.condition);
this.pw.print(") ");
this.unparseBlockStatement(is.thenStatement);
if (is.optionalElseStatement != null) {
this.pw.println(" else");
this.unparseBlockStatement(is.optionalElseStatement);
}
}
@Override public void
visitLabeledStatement(Java.LabeledStatement ls) {
this.pw.println(ls.label + ':');
this.unparseBlockStatement(ls.body);
}
@Override public void
visitLocalClassDeclarationStatement(Java.LocalClassDeclarationStatement lcds) {
this.unparseTypeDeclaration(lcds.lcd);
}
@Override public void
visitLocalVariableDeclarationStatement(Java.LocalVariableDeclarationStatement lvds) {
this.unparseAnnotations(lvds.modifiers.annotations);
this.unparseModifiers(lvds.modifiers.flags);
this.unparseType(lvds.type);
this.pw.print(' ');
this.pw.print(AutoIndentWriter.TABULATOR);
this.unparseVariableDeclarator(lvds.variableDeclarators[0]);
for (int i = 1; i < lvds.variableDeclarators.length; ++i) {
this.pw.print(", ");
this.unparseVariableDeclarator(lvds.variableDeclarators[i]);
}
this.pw.print(';');
}
@Override public void
visitReturnStatement(Java.ReturnStatement rs) {
this.pw.print("return");
if (rs.optionalReturnValue != null) {
this.pw.print(' ');
this.unparse(rs.optionalReturnValue);
}
this.pw.print(';');
}
@Override public void
visitSwitchStatement(Java.SwitchStatement ss) {
this.pw.print("switch (");
this.unparse(ss.condition);
this.pw.println(") {");
for (Java.SwitchStatement.SwitchBlockStatementGroup sbsg : ss.sbsgs) {
this.pw.print(AutoIndentWriter.UNINDENT);
try {
for (Java.Rvalue rv : sbsg.caseLabels) {
this.pw.print("case ");
this.unparse(rv);
this.pw.println(':');
}
if (sbsg.hasDefaultLabel) this.pw.println("default:");
} finally {
this.pw.print(AutoIndentWriter.INDENT);
}
for (Java.BlockStatement bs : sbsg.blockStatements) {
this.unparseBlockStatement(bs);
this.pw.println();
}
}
this.pw.print('}');
}
@Override public void
visitSynchronizedStatement(Java.SynchronizedStatement ss) {
this.pw.print("synchronized (");
this.unparse(ss.expression);
this.pw.print(") ");
this.unparseBlockStatement(ss.body);
}
@Override public void
visitThrowStatement(Java.ThrowStatement ts) {
this.pw.print("throw ");
this.unparse(ts.expression);
this.pw.print(';');
}
@Override public void
visitTryStatement(Java.TryStatement ts) {
this.pw.print("try ");
this.unparseBlockStatement(ts.body);
for (Java.CatchClause cc : ts.catchClauses) {
this.pw.print(" catch (");
this.unparseFormalParameter(cc.caughtException, false);
this.pw.print(") ");
this.unparseBlockStatement(cc.body);
}
if (ts.optionalFinally != null) {
this.pw.print(" finally ");
this.unparseBlockStatement(ts.optionalFinally);
}
}
@Override public void
visitWhileStatement(Java.WhileStatement ws) {
this.pw.print("while (");
this.unparse(ws.condition);
this.pw.print(") ");
this.unparseBlockStatement(ws.body);
}
private void
unparseVariableDeclarator(Java.VariableDeclarator vd) {
this.pw.print(vd.name);
for (int i = 0; i < vd.brackets; ++i) this.pw.print("[]");
if (vd.optionalInitializer != null) {
this.pw.print(" = ");
this.unparseArrayInitializerOrRvalue(vd.optionalInitializer);
}
}
private void
unparseFormalParameter(Java.FunctionDeclarator.FormalParameter fp, boolean hasEllipsis) {
if (fp.finaL) this.pw.print("final ");
this.unparseType(fp.type);
if (hasEllipsis) this.pw.write("...");
this.pw.print(" " + AutoIndentWriter.TABULATOR + fp.name);
}
@Override public void
visitMethodInvocation(Java.MethodInvocation mi) {
if (mi.optionalTarget != null) {
this.unparseLhs(mi.optionalTarget, ".");
this.pw.print('.');
}
this.pw.print(mi.methodName);
this.unparseFunctionInvocationArguments(mi.arguments);
}
@Override public void
visitAlternateConstructorInvocation(Java.AlternateConstructorInvocation aci) {
this.pw.print("this");
this.unparseFunctionInvocationArguments(aci.arguments);
}
@Override public void
visitSuperConstructorInvocation(Java.SuperConstructorInvocation sci) {
if (sci.optionalQualification != null) {
this.unparseLhs(sci.optionalQualification, ".");
this.pw.print('.');
}
this.pw.print("super");
this.unparseFunctionInvocationArguments(sci.arguments);
}
@Override public void
visitNewClassInstance(Java.NewClassInstance nci) {
if (nci.optionalQualification != null) {
this.unparseLhs(nci.optionalQualification, ".");
this.pw.print('.');
}
this.pw.print("new " + nci.type.toString());
this.unparseFunctionInvocationArguments(nci.arguments);
}
@Override public void
visitAssignment(Java.Assignment a) {
this.unparseLhs(a.lhs, a.operator);
this.pw.print(' ' + a.operator + ' ');
this.unparseRhs(a.rhs, a.operator);
}
@Override public void
visitAmbiguousName(Java.AmbiguousName an) { this.pw.print(an.toString()); }
@Override public void
visitArrayAccessExpression(Java.ArrayAccessExpression aae) {
this.unparseLhs(aae.lhs, "[ ]");
this.pw.print('[');
this.unparse(aae.index);
this.pw.print(']');
}
@Override public void
visitArrayLength(Java.ArrayLength al) {
this.unparseLhs(al.lhs, ".");
this.pw.print(".length");
}
@Override public void
visitArrayType(Java.ArrayType at) {
this.unparseType(at.componentType);
this.pw.print("[]");
}
@Override public void
visitBasicType(Java.BasicType bt) {
this.pw.print(bt.toString());
}
@Override public void
visitBinaryOperation(Java.BinaryOperation bo) {
this.unparseLhs(bo.lhs, bo.op);
this.pw.print(' ' + bo.op + ' ');
this.unparseRhs(bo.rhs, bo.op);
}
@Override public void
visitCast(Java.Cast c) {
this.pw.print('(');
this.unparseType(c.targetType);
this.pw.print(") ");
this.unparseRhs(c.value, "cast");
}
@Override public void
visitClassLiteral(Java.ClassLiteral cl) {
this.unparseType(cl.type);
this.pw.print(".class");
}
@Override public void
visitConditionalExpression(Java.ConditionalExpression ce) {
this.unparseLhs(ce.lhs, "?:");
this.pw.print(" ? ");
this.unparseLhs(ce.mhs, "?:");
this.pw.print(" : ");
this.unparseRhs(ce.rhs, "?:");
}
@Override public void
visitCrement(Java.Crement c) {
if (c.pre) {
this.pw.print(c.operator);
this.unparseUnaryOperation(c.operand, c.operator + "x");
} else
{
this.unparseUnaryOperation(c.operand, "x" + c.operator);
this.pw.print(c.operator);
}
}
@Override public void
visitFieldAccess(Java.FieldAccess fa) {
this.unparseLhs(fa.lhs, ".");
this.pw.print('.' + fa.field.getName());
}
@Override public void
visitFieldAccessExpression(Java.FieldAccessExpression fae) {
this.unparseLhs(fae.lhs, ".");
this.pw.print('.' + fae.fieldName);
}
@Override public void
visitSuperclassFieldAccessExpression(Java.SuperclassFieldAccessExpression scfae) {
if (scfae.optionalQualification != null) {
this.unparseType(scfae.optionalQualification);
this.pw.print(".super." + scfae.fieldName);
} else
{
this.pw.print("super." + scfae.fieldName);
}
}
@Override public void
visitInstanceof(Java.Instanceof io) {
this.unparseLhs(io.lhs, "instanceof");
this.pw.print(" instanceof ");
this.unparseType(io.rhs);
}
@Override public void visitIntegerLiteral(Java.IntegerLiteral il) { this.pw.print(il.value); }
@Override public void visitFloatingPointLiteral(Java.FloatingPointLiteral fpl) { this.pw.print(fpl.value); }
@Override public void visitBooleanLiteral(Java.BooleanLiteral bl) { this.pw.print(bl.value); }
@Override public void visitCharacterLiteral(Java.CharacterLiteral cl) { this.pw.print(cl.value); }
@Override public void visitStringLiteral(Java.StringLiteral sl) { this.pw.print(sl.value); }
@Override public void visitNullLiteral(Java.NullLiteral nl) { this.pw.print(nl.value); }
@Override public void visitSimpleConstant(Java.SimpleConstant sl) { this.pw.print("[" + sl.value + ']'); } // SUPPRESS CHECKSTYLE LineLength
@Override public void visitLocalVariableAccess(Java.LocalVariableAccess lva) { this.pw.print(lva.toString()); }
@Override public void
visitNewArray(Java.NewArray na) {
this.pw.print("new ");
this.unparseType(na.type);
for (Rvalue dimExpr : na.dimExprs) {
this.pw.print('[');
this.unparse(dimExpr);
this.pw.print(']');
}
for (int i = 0; i < na.dims; ++i) {
this.pw.print("[]");
}
}
@Override public void
visitNewInitializedArray(Java.NewInitializedArray nai) {
this.pw.print("new ");
this.unparseType(nai.arrayType);
this.pw.print(" ");
this.unparseArrayInitializerOrRvalue(nai.arrayInitializer);
}
@Override public void
visitPackage(Java.Package p) { this.pw.print(p.toString()); }
@Override public void
visitParameterAccess(Java.ParameterAccess pa) { this.pw.print(pa.toString()); }
@Override public void
visitQualifiedThisReference(Java.QualifiedThisReference qtr) {
this.unparseType(qtr.qualification);
this.pw.print(".this");
}
@Override public void
visitReferenceType(Java.ReferenceType rt) { this.pw.print(rt.toString()); }
@Override public void
visitRvalueMemberType(Java.RvalueMemberType rmt) { this.pw.print(rmt.toString()); }
@Override public void
visitSimpleType(Java.SimpleType st) { this.pw.print(st.toString()); }
@Override public void
visitSuperclassMethodInvocation(Java.SuperclassMethodInvocation smi) {
this.pw.print("super." + smi.methodName);
this.unparseFunctionInvocationArguments(smi.arguments);
}
@Override public void
visitThisReference(Java.ThisReference tr) { this.pw.print("this"); }
@Override public void
visitUnaryOperation(Java.UnaryOperation uo) {
this.pw.print(uo.operator);
this.unparseUnaryOperation(uo.operand, uo.operator + "x");
}
@Override public void
visitParenthesizedExpression(Java.ParenthesizedExpression pe) {
this.pw.print('(');
this.unparse(pe.value);
this.pw.print(')');
}
// Helpers
private void
unparseBlockStatement(Java.BlockStatement blockStatement) { blockStatement.accept(this); }
private void
unparseTypeDeclaration(Java.TypeDeclaration typeDeclaration) { typeDeclaration.accept(this); }
private void
unparseType(Java.Type type) { ((Java.Atom) type).accept(this); }
private void
unparse(Java.Atom operand) { operand.accept(this); }
/**
* Iff the operand is unnatural for the unaryOperator, enclose the
* operand in parentheses. Example: "a+b" is an unnatural operand for unary "!x".
*
* @param unaryOperator ++x --x +x -x ~x !x x++ x--
*/
private void
unparseUnaryOperation(Java.Rvalue operand, String unaryOperator) {
int cmp = UnparseVisitor.comparePrecedence(unaryOperator, operand);
this.unparse(operand, cmp < 0);
}
/**
* Iff the lhs is unnatural for the binaryOperator, enclose the
* lhs in parentheses. Example: "a+b" is an unnatural lhs for operator "*".
*
* @param binaryOperator = +=... ?: || && | ^ & == != < > <= >= instanceof << >> >>> + - * / % cast
*/
private void
unparseLhs(Java.Atom lhs, String binaryOperator) {
int cmp = UnparseVisitor.comparePrecedence(binaryOperator, lhs);
this.unparse(lhs, cmp < 0 || (cmp == 0 && UnparseVisitor.isLeftAssociate(binaryOperator)));
}
/**
* Iff the rhs is unnatural for the binaryOperator, enclose the
* rhs in parentheses. Example: "a+b" is an unnatural rhs for operator "*".
*/
private void
unparseRhs(Java.Rvalue rhs, String binaryOperator) {
int cmp = UnparseVisitor.comparePrecedence(binaryOperator, rhs);
this.unparse(rhs, cmp < 0 || (cmp == 0 && UnparseVisitor.isRightAssociate(binaryOperator)));
}
private void
unparse(Java.Atom operand, boolean natural) {
if (!natural) this.pw.print("((( ");
this.unparse(operand);
if (!natural) this.pw.print(" )))");
}
/**
* Return true iff operator is right associative e.g. a = b = c evaluates as
* a = (b = c).
*
* @return Return true iff operator is right associative
*/
private static boolean
isRightAssociate(String op) { return UnparseVisitor.RIGHT_ASSOCIATIVE_OPERATORS.contains(op); }
/**
* Return true iff operator is left associative e.g. a - b - c evaluates as
* (a - b) - c.
*
* @return Return true iff operator is left associative
*/
private static boolean
isLeftAssociate(String op) { return UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS.contains(op); }
/**
* Returns a value
*
* - < 0 iff the
operator has lower precedence than the operand
* - ==; 0 iff the
operator has equal precedence than the operand
* - > 0 iff the
operator has higher precedence than the operand
*
*/
private static int
comparePrecedence(String operator, Java.Atom operand) {
if (operand instanceof Java.BinaryOperation) {
return (
UnparseVisitor.getOperatorPrecedence(operator)
- UnparseVisitor.getOperatorPrecedence(((Java.BinaryOperation) operand).op)
);
} else
if (operand instanceof Java.UnaryOperation) {
return (
UnparseVisitor.getOperatorPrecedence(operator)
- UnparseVisitor.getOperatorPrecedence(((Java.UnaryOperation) operand).operator + "x")
);
} else
if (operand instanceof Java.ConditionalExpression) {
return UnparseVisitor.getOperatorPrecedence(operator) - UnparseVisitor.getOperatorPrecedence("?:");
} else
if (operand instanceof Java.Instanceof) {
return UnparseVisitor.getOperatorPrecedence(operator) - UnparseVisitor.getOperatorPrecedence("instanceof");
} else
if (operand instanceof Java.Cast) {
return UnparseVisitor.getOperatorPrecedence(operator) - UnparseVisitor.getOperatorPrecedence("cast");
} else
if (operand instanceof Java.MethodInvocation || operand instanceof Java.FieldAccess) {
return UnparseVisitor.getOperatorPrecedence(operator) - UnparseVisitor.getOperatorPrecedence(".");
} else
if (operand instanceof Java.NewArray) {
return UnparseVisitor.getOperatorPrecedence(operator) - UnparseVisitor.getOperatorPrecedence("new");
} else
if (operand instanceof Java.Crement) {
Java.Crement c = (Java.Crement) operand;
return (
UnparseVisitor.getOperatorPrecedence(operator)
- UnparseVisitor.getOperatorPrecedence(c.pre ? c.operator + "x" : "x" + c.operator)
);
} else
{
// All other rvalues (e.g. literal) have higher precedence than any operator.
return -1;
}
}
private static int
getOperatorPrecedence(String operator) {
return ((Integer) UnparseVisitor.OPERATOR_PRECEDENCE.get(operator)).intValue();
}
private static final Set LEFT_ASSOCIATIVE_OPERATORS = new HashSet();
private static final Set RIGHT_ASSOCIATIVE_OPERATORS = new HashSet();
private static final Set UNARY_OPERATORS = new HashSet();
private static final Map OPERATOR_PRECEDENCE = new HashMap();
static {
Object[] ops = {
UnparseVisitor.RIGHT_ASSOCIATIVE_OPERATORS, "=", "*=", "/=", "%=", "+=", "-=", "<<=", ">>=", ">>>=",
"&=", "^=", "|=", // SUPPRESS CHECKSTYLE WrapAndIndent
UnparseVisitor.RIGHT_ASSOCIATIVE_OPERATORS, "?:",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "||",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "&&",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "|",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "^",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "&",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "==", "!=",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "<", ">", "<=", ">=", "instanceof",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "<<", ">>", ">>>",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "+", "-",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "*", "/", "%",
UnparseVisitor.RIGHT_ASSOCIATIVE_OPERATORS, "cast",
UnparseVisitor.UNARY_OPERATORS, "++x", "--x", "+x", "-x", "~x", "!x",
UnparseVisitor.UNARY_OPERATORS, "x++", "x--",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, "new",
UnparseVisitor.LEFT_ASSOCIATIVE_OPERATORS, ".", "[ ]",
};
int precedence = 0;
LOOP1: for (int i = 0;;) {
final Set s = (Set) ops[i++];
final Integer pi = new Integer(++precedence);
for (;;) {
if (i == ops.length) break LOOP1;
if (!(ops[i] instanceof String)) break;
String op = (String) ops[i++];
s.add(op);
UnparseVisitor.OPERATOR_PRECEDENCE.put(op, pi);
}
}
}
private void
unparseNamedClassDeclaration(Java.NamedClassDeclaration ncd) {
this.unparseDocComment(ncd);
this.unparseAnnotations(ncd.getAnnotations());
this.unparseModifiers(ncd.getModifierFlags());
this.pw.print("class " + ncd.name);
if (ncd.optionalExtendedType != null) {
this.pw.print(" extends ");
this.unparseType(ncd.optionalExtendedType);
}
if (ncd.implementedTypes.length > 0) this.pw.print(" implements " + Java.join(ncd.implementedTypes, ", "));
this.pw.println(" {");
this.pw.print(AutoIndentWriter.INDENT);
this.unparseClassDeclarationBody(ncd);
this.pw.print(AutoIndentWriter.UNINDENT + "}");
}
private void
unparseArrayInitializerOrRvalue(Java.ArrayInitializerOrRvalue aiorv) {
if (aiorv instanceof Java.Rvalue) {
this.unparse((Java.Rvalue) aiorv);
} else
if (aiorv instanceof Java.ArrayInitializer) {
Java.ArrayInitializer ai = (Java.ArrayInitializer) aiorv;
if (ai.values.length == 0) {
this.pw.print("{}");
} else
{
this.pw.print("{ ");
this.unparseArrayInitializerOrRvalue(ai.values[0]);
for (int i = 1; i < ai.values.length; ++i) {
this.pw.print(", ");
this.unparseArrayInitializerOrRvalue(ai.values[i]);
}
this.pw.print(" }");
}
} else
{
throw new JaninoRuntimeException(
"Unexpected array initializer or rvalue class "
+ aiorv.getClass().getName()
);
}
}
@Override public void
visitAnonymousClassDeclaration(Java.AnonymousClassDeclaration acd) {
this.unparseType(acd.baseType);
this.pw.println(" {");
this.pw.print(AutoIndentWriter.INDENT);
this.unparseClassDeclarationBody(acd);
this.pw.print(AutoIndentWriter.UNINDENT + "}");
}
@Override public void
visitNewAnonymousClassInstance(Java.NewAnonymousClassInstance naci) {
if (naci.optionalQualification != null) {
this.unparseLhs(naci.optionalQualification, ".");
this.pw.print('.');
}
this.pw.print("new " + naci.anonymousClassDeclaration.baseType.toString() + '(');
for (int i = 0; i < naci.arguments.length; ++i) {
if (i > 0) this.pw.print(", ");
this.unparse(naci.arguments[i]);
}
this.pw.println(") {");
this.pw.print(AutoIndentWriter.INDENT);
this.unparseClassDeclarationBody(naci.anonymousClassDeclaration);
this.pw.print(AutoIndentWriter.UNINDENT + "}");
}
// Multi-line!
private void
unparseClassDeclarationBody(Java.ClassDeclaration cd) {
for (Java.ConstructorDeclarator ctord : cd.constructors) {
this.pw.println();
ctord.accept(this);
this.pw.println();
}
this.unparseAbstractTypeDeclarationBody(cd);
for (Java.BlockStatement vdoi : cd.variableDeclaratorsAndInitializers) {
this.pw.println();
vdoi.accept(this);
this.pw.println();
}
}
private void
unparseInterfaceDeclaration(Java.InterfaceDeclaration id) {
this.unparseDocComment(id);
this.unparseAnnotations(id.getAnnotations());
this.unparseModifiers(id.getModifierFlags());
//make sure we print "interface", even if it wasn't in the modifiers
if (!Mod.isInterface(id.getModifierFlags())) this.pw.print("interface ");
this.pw.print(id.name);
if (id.extendedTypes.length > 0) this.pw.print(" extends " + Java.join(id.extendedTypes, ", "));
this.pw.println(" {");
this.pw.print(AutoIndentWriter.INDENT);
this.unparseAbstractTypeDeclarationBody(id);
for (Java.TypeBodyDeclaration cnstd : id.constantDeclarations) {
cnstd.accept(this);
this.pw.println();
}
this.pw.print(AutoIndentWriter.UNINDENT + "}");
}
// Multi-line!
private void
unparseAbstractTypeDeclarationBody(Java.AbstractTypeDeclaration atd) {
for (Java.MethodDeclarator md : atd.getMethodDeclarations()) {
this.pw.println();
md.accept(this);
this.pw.println();
}
for (Java.MemberTypeDeclaration mtd : atd.getMemberTypeDeclarations()) {
this.pw.println();
((Java.TypeBodyDeclaration) mtd).accept(this);
this.pw.println();
}
}
private void
unparseFunctionDeclaratorRest(Java.FunctionDeclarator fd) {
boolean big = fd.formalParameters.parameters.length >= 4;
this.pw.print('(');
if (big) { this.pw.println(); this.pw.print(AutoIndentWriter.INDENT); }
for (int i = 0; i < fd.formalParameters.parameters.length; ++i) {
if (i > 0) {
if (big) {
this.pw.println(',');
} else
{
this.pw.print(", ");
}
}
this.unparseFormalParameter(
fd.formalParameters.parameters[i],
i == fd.formalParameters.parameters.length - 1 && fd.formalParameters.variableArity
);
}
if (big) { this.pw.println(); this.pw.print(AutoIndentWriter.UNINDENT); }
this.pw.print(')');
if (fd.thrownExceptions.length > 0) this.pw.print(" throws " + Java.join(fd.thrownExceptions, ", "));
}
private void
unparseDocComment(Java.DocCommentable dc) {
String optionalDocComment = dc.getDocComment();
if (optionalDocComment != null) {
this.pw.print("/**");
BufferedReader br = new BufferedReader(new StringReader(optionalDocComment));
for (;;) {
String line;
try {
line = br.readLine();
} catch (IOException e) {
throw new JaninoRuntimeException(null, e);
}
if (line == null) break;
this.pw.println(line);
this.pw.print(" *");
}
this.pw.println("/");
}
}
private void
unparseAnnotations(Java.Annotation[] annotations) {
for (Annotation a : annotations) a.accept(this);
}
private void
unparseModifiers(short modifiers) {
if (modifiers != 0) {
this.pw.print(Mod.shortToString(modifiers) + ' ');
}
}
private void
unparseFunctionInvocationArguments(Java.Rvalue[] arguments) {
boolean big = arguments.length >= 5;
this.pw.print('(');
if (big) { this.pw.println(); this.pw.print(AutoIndentWriter.INDENT); }
for (int i = 0; i < arguments.length; ++i) {
if (i > 0) {
if (big) {
this.pw.println(',');
} else
{
this.pw.print(", ");
}
}
this.unparse(arguments[i]);
}
if (big) { this.pw.println(); this.pw.print(AutoIndentWriter.UNINDENT); }
this.pw.print(')');
}
@Override public void
visitMarkerAnnotation(Java.MarkerAnnotation ma) {
this.pw.append('@').append(ma.type.toString()).append(' ');
}
@Override public void
visitNormalAnnotation(Java.NormalAnnotation na) {
this.pw.append('@').append(na.type.toString()).append('(');
for (Java.ElementValuePair evp : na.elementValuePairs) {
this.pw.append(evp.identifier).append(" = ");
evp.elementValue.accept(this);
}
this.pw.append(") ");
}
@Override public void
visitSingleElementAnnotation(Java.SingleElementAnnotation sea) {
this.pw.append('@').append(sea.type.toString()).append('(');
sea.elementValue.accept(this);
this.pw.append(") ");
}
@Override public void
visitElementValueArrayInitializer(Java.ElementValueArrayInitializer evai) {
if (evai.elementValues.length == 0) {
this.pw.append("{}");
return;
}
this.pw.append("{ ");
evai.elementValues[0].accept(this);
for (int i = 1; i < evai.elementValues.length; i++) {
this.pw.append(", ");
evai.elementValues[i].accept(this);
}
this.pw.append(" }");
}
}