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com.epam.deltix.util.jcg.scg.JExprImplBase Maven / Gradle / Ivy
/*
* Copyright 2021 EPAM Systems, Inc
*
* See the NOTICE file distributed with this work for additional information
* regarding copyright ownership. Licensed under the Apache License,
* Version 2.0 (the "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package com.epam.deltix.util.jcg.scg;
import com.epam.deltix.util.jcg.*;
import java.io.IOException;
import static com.epam.deltix.util.jcg.scg.JavaSrcGenContext.*;
/**
*
*/
abstract class JExprImplBase implements JExpr, Printable {
final JContextImpl context;
public JExprImplBase (JContextImpl context) {
this.context = context;
}
@Override
public final void print (SourceCodePrinter out)
throws IOException
{
print (JavaOpPriority.OPEN, out);
}
abstract void print (int outerPriority, SourceCodePrinter out)
throws IOException;
protected final void printBinary (
int outerPriority,
JExprImplBase left,
String infix,
int thisPriority,
InfixAssociation thisAssociation,
JExprImplBase right,
SourceCodePrinter out
)
throws IOException
{
boolean parenthesize = outerPriority > thisPriority;
if (parenthesize)
out.print ("(");
left.print (thisAssociation == InfixAssociation.LEFT ? thisPriority : thisPriority + 1, out);
out.print (infix);
right.print (thisAssociation == InfixAssociation.RIGHT ? thisPriority : thisPriority + 1, out);
if (parenthesize)
out.print (")");
}
protected final void printPrefix (
int outerPriority,
String prefix,
int thisPriority,
JExprImplBase right,
SourceCodePrinter out
)
throws IOException
{
int intPriority;
boolean parenthesize = outerPriority > thisPriority;
if (parenthesize) {
out.print ("(");
intPriority = JavaOpPriority.OPEN;
}
else
intPriority = thisPriority;
out.print (prefix);
right.print (intPriority, out);
if (parenthesize)
out.print (")");
}
protected final void printPostfix (
int outerPriority,
JExprImplBase left,
String postfix,
int thisPriority,
SourceCodePrinter out
)
throws IOException
{
int intPriority;
boolean parenthesize = outerPriority > thisPriority;
if (parenthesize) {
out.print ("(");
intPriority = JavaOpPriority.OPEN;
}
else
intPriority = thisPriority;
left.print (intPriority, out);
out.print (postfix);
if (parenthesize)
out.print (")");
}
abstract static class X2 extends JExprImplBase {
protected final JExpr arg;
public X2 (JExprImplBase arg) {
super (arg.context);
this.arg = arg;
}
}
@Override
public JExpr cast (final Class toClass) {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out)
throws IOException
{
boolean parenthesize = outerPriority > JavaOpPriority.CAST;
int intPriority;
if (parenthesize) {
out.print ("(");
intPriority = JavaOpPriority.OPEN;
}
else
intPriority = JavaOpPriority.CAST;
out.print ("(");
out.printRefClassName (context.cn1 (toClass));
out.print (")");
((JExprImplBase) arg).print (intPriority, out);
if (parenthesize)
out.print (")");
}
}
);
}
@Override
public JExpr incAndGet () {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPrefix (
outerPriority,
"++",
JavaOpPriority.UNARY,
(JExprImplBase) arg,
out
);
}
}
);
}
@Override
public JExpr decAndGet () {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPrefix (
outerPriority,
"--",
JavaOpPriority.UNARY,
(JExprImplBase) arg,
out
);
}
}
);
}
@Override
public JExpr getAndInc () {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPostfix (
outerPriority,
(JExprImplBase) arg,
"++",
JavaOpPriority.POSTFIX,
out
);
}
}
);
}
@Override
public JExpr getAndDec () {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPostfix (
outerPriority,
(JExprImplBase) arg,
"--",
JavaOpPriority.POSTFIX,
out
);
}
}
);
}
@Override
public JStatement inc () {
return (
new JStatementImplBase (context) {
@Override
public void printElement (SourceCodePrinter out) throws IOException {
out.print (JExprImplBase.this, "++;");
}
}
);
}
@Override
public JStatement assign (final JExpr value) {
return (
new JStatementImplBase (context) {
@Override
public void printElement (SourceCodePrinter out) throws IOException {
out.print (JExprImplBase.this, " = ", value, ";");
}
}
);
}
@Override
public JExpr assignExpr (final JExpr value) {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printBinary (
outerPriority,
JExprImplBase.this,
" = ",
JavaOpPriority.ASSIGNMENT,
InfixAssociation.RIGHT,
(JExprImplBase) value,
out
);
}
}
);
}
@Override
public JStatement dec () {
return (
new JStatementImplBase (context) {
@Override
public void printElement (SourceCodePrinter out) throws IOException {
out.print (JExprImplBase.this, "--;");
}
}
);
}
@Override
public JStatement alter (final String op, final JExpr arg) {
return (
new JStatementImplBase (context) {
@Override
public void printElement (SourceCodePrinter out) throws IOException {
out.print (JExprImplBase.this, " ", op, " ", arg, ";");
}
}
);
}
@Override
public JExpr cast (final JType toClass) {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
boolean parenthesize = outerPriority > JavaOpPriority.CAST;
int intPriority;
if (parenthesize) {
out.print ("(");
intPriority = JavaOpPriority.OPEN;
}
else
intPriority = JavaOpPriority.CAST;
out.print ("(");
out.printRefClassName (cn (toClass));
out.print (")");
((JExprImplBase) arg).print (intPriority, out);
if (parenthesize)
out.print (")");
}
}
);
}
@Override
public JExpr not () {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPrefix (outerPriority, "!", JavaOpPriority.UNARY, (JExprImplBase) arg, out);
}
}
);
}
@Override
public JExpr negate() {
return new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPrefix(outerPriority, "-", JavaOpPriority.UNARY, (JExprImplBase) arg, out);
}
};
}
@Override
public JStatement throwStmt () {
return (
new JStatementImplBase (context) {
@Override
public void printElement (SourceCodePrinter out) throws IOException {
out.print ("throw ", JExprImplBase.this, ";");
}
}
);
}
@Override
public JStatement returnStmt () {
return (
new JStatementImplBase (context) {
@Override
public void printElement (SourceCodePrinter out) throws IOException {
out.print ("return ", JExprImplBase.this, ";");
}
}
);
}
@Override
public JStatement asStmt () {
return (etos (this));
}
@Override
public JExpr call (final String method, final JExpr ... args) {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
int intPriority;
boolean parenthesize = outerPriority > JavaOpPriority.POSTFIX;
if (parenthesize) {
out.print ("(");
intPriority = JavaOpPriority.OPEN;
}
else
intPriority = JavaOpPriority.POSTFIX;
((JExprImplBase) arg).print (intPriority, out);
out.print (".", method, " (");
px (out, args);
out.print (")");
if (parenthesize)
out.print (")");
}
}
);
}
@Override
public JExpr index (final JExpr index) {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
int intPriority;
boolean parenthesize = outerPriority > JavaOpPriority.POSTFIX;
if (parenthesize) {
out.print ("(");
intPriority = JavaOpPriority.OPEN;
}
else
intPriority = JavaOpPriority.POSTFIX;
((JExprImplBase) arg).print (intPriority, out);
out.print ("[", index, "]");
if (parenthesize)
out.print (")");
}
}
);
}
@Override
public JExpr index (final int index) {
return (index (context.mkint (index)));
}
@Override
public JExpr field (final String fieldId) {
return (
new X2 (this) {
@Override
public void print (int outerPriority, SourceCodePrinter out) throws IOException {
printPostfix (
outerPriority,
(JExprImplBase) arg,
"." + fieldId,
JavaOpPriority.POSTFIX,
out
);
}
}
);
}
@Override
public JSwitchStatement switchStmt () {
return (switchStmt (null));
}
@Override
public JSwitchStatement switchStmt (String label) {
return (new JSwitchStatementImpl (label, this));
}
}
