jdk.nashorn.internal.ir.WhileNode Java Examples

The following examples show how to use jdk.nashorn.internal.ir.WhileNode. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: JSONWriter.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #2
Source File: JSONWriter.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #3
Source File: JSONWriter.java    From openjdk-8-source with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #4
Source File: Parser.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           while ( Expression ) Statement
 *           ...
 *
 * See 12.6
 *
 * Parse while statement.
 */
private void whileStatement() {
    // Capture WHILE token.
    final long whileToken = token;
    // WHILE tested in caller.
    next();

    // Construct WHILE node.
    WhileNode whileNode = new WhileNode(line, whileToken, Token.descPosition(whileToken), false);
    lc.push(whileNode);

    try {
        expect(LPAREN);
        final int whileLine = line;
        final Expression test = expression();
        expect(RPAREN);
        final Block body = getStatement();
        appendStatement(whileNode =
            new WhileNode(whileLine, whileToken, finish, false).
                setTest(lc, test).
                setBody(lc, body));
    } finally {
        lc.pop(whileNode);
    }
}
Example #5
Source File: JSONWriter.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #6
Source File: CodeGenerator.java    From openjdk-8 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    final Expression test          = whileNode.getTest();
    final Block      body          = whileNode.getBody();
    final Label      breakLabel    = whileNode.getBreakLabel();
    final Label      continueLabel = whileNode.getContinueLabel();
    final boolean    isDoWhile     = whileNode.isDoWhile();
    final Label      loopLabel     = new Label("loop");

    if (!isDoWhile) {
        method._goto(continueLabel);
    }

    method.label(loopLabel);
    body.accept(this);
    if (!whileNode.isTerminal()) {
        method.label(continueLabel);
        lineNumber(whileNode);
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
        method.label(breakLabel);
    }

    return false;
}
Example #7
Source File: Parser.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           while ( Expression ) Statement
 *           ...
 *
 * See 12.6
 *
 * Parse while statement.
 */
private void whileStatement() {
    // Capture WHILE token.
    final long whileToken = token;
    // WHILE tested in caller.
    next();

    // Construct WHILE node.
    WhileNode whileNode = new WhileNode(line, whileToken, Token.descPosition(whileToken), false);
    lc.push(whileNode);

    try {
        expect(LPAREN);
        final int whileLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);
        final Block body = getStatement();
        appendStatement(whileNode =
            new WhileNode(whileLine, whileToken, finish, false).
                setTest(lc, test).
                setBody(lc, body));
    } finally {
        lc.pop(whileNode);
    }
}
Example #8
Source File: JSONWriter.java    From jdk8u60 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #9
Source File: Parser.java    From jdk8u_nashorn with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           while ( Expression ) Statement
 *           ...
 *
 * See 12.6
 *
 * Parse while statement.
 */
private void whileStatement() {
    // Capture WHILE token.
    final long whileToken = token;
    // WHILE tested in caller.
    next();

    // Construct WHILE node.
    WhileNode whileNode = new WhileNode(line, whileToken, Token.descPosition(whileToken), false);
    lc.push(whileNode);

    try {
        expect(LPAREN);
        final int whileLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);
        final Block body = getStatement();
        appendStatement(whileNode =
            new WhileNode(whileLine, whileToken, finish, false).
                setTest(lc, test).
                setBody(lc, body));
    } finally {
        lc.pop(whileNode);
    }
}
Example #10
Source File: Parser.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           while ( Expression ) Statement
 *           ...
 *
 * See 12.6
 *
 * Parse while statement.
 */
private void whileStatement() {
    // Capture WHILE token.
    final long whileToken = token;
    // WHILE tested in caller.
    next();

    // Construct WHILE node.
    WhileNode whileNode = new WhileNode(line, whileToken, Token.descPosition(whileToken), false);
    lc.push(whileNode);

    try {
        expect(LPAREN);
        final int whileLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);
        final Block body = getStatement();
        appendStatement(whileNode =
            new WhileNode(whileLine, whileToken, finish, false).
                setTest(lc, test).
                setBody(lc, body));
    } finally {
        lc.pop(whileNode);
    }
}
Example #11
Source File: JSONWriter.java    From nashorn with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #12
Source File: JSONWriter.java    From openjdk-jdk8u with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #13
Source File: CodeGenerator.java    From nashorn with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    lineNumber(whileNode);

    final Expression test          = whileNode.getTest();
    final Block      body          = whileNode.getBody();
    final Label      breakLabel    = whileNode.getBreakLabel();
    final Label      continueLabel = whileNode.getContinueLabel();
    final Label      loopLabel     = new Label("loop");

    if (!whileNode.isDoWhile()) {
        method._goto(continueLabel);
    }

    method.label(loopLabel);
    body.accept(this);
    if (!whileNode.isTerminal()) {
        method.label(continueLabel);
        new BranchOptimizer(this, method).execute(test, loopLabel, true);
        method.label(breakLabel);
    }

    return false;
}
Example #14
Source File: Parser.java    From TencentKona-8 with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           while ( Expression ) Statement
 *           ...
 *
 * See 12.6
 *
 * Parse while statement.
 */
private void whileStatement() {
    // Capture WHILE token.
    final long whileToken = token;
    // WHILE tested in caller.
    next();

    // Construct WHILE node.
    WhileNode whileNode = new WhileNode(line, whileToken, Token.descPosition(whileToken), false);
    lc.push(whileNode);

    try {
        expect(LPAREN);
        final int whileLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);
        final Block body = getStatement();
        appendStatement(whileNode =
            new WhileNode(whileLine, whileToken, finish, false).
                setTest(lc, test).
                setBody(lc, body));
    } finally {
        lc.pop(whileNode);
    }
}
Example #15
Source File: Parser.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 6 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           while ( Expression ) Statement
 *           ...
 *
 * See 12.6
 *
 * Parse while statement.
 */
private void whileStatement() {
    // Capture WHILE token.
    final long whileToken = token;
    // WHILE tested in caller.
    next();

    // Construct WHILE node.
    WhileNode whileNode = new WhileNode(line, whileToken, Token.descPosition(whileToken), false);
    lc.push(whileNode);

    try {
        expect(LPAREN);
        final int whileLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);
        final Block body = getStatement();
        appendStatement(whileNode =
            new WhileNode(whileLine, whileToken, finish, false).
                setTest(lc, test).
                setBody(lc, body));
    } finally {
        lc.pop(whileNode);
    }
}
Example #16
Source File: JSONWriter.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    enterDefault(whileNode);

    type(whileNode.isDoWhile() ? "DoWhileStatement" : "WhileStatement");
    comma();

    if (whileNode.isDoWhile()) {
        property("body");
        whileNode.getBody().accept(this);
        comma();

        property("test");
        whileNode.getTest().accept(this);
    } else {
        property("test");
        whileNode.getTest().accept(this);
        comma();

        property("body");
        whileNode.getBody().accept(this);
    }

    return leave();
}
Example #17
Source File: PrintVisitor.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    if (whileNode.isDoWhile()) {
        sb.append("do");
        whileNode.getBody().accept(this);
        sb.append(' ');
        whileNode.toString(sb);
    } else {
        whileNode.toString(sb);
        whileNode.getBody().accept(this);
    }

    return false;
}
Example #18
Source File: FinalizeTypes.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    if (test != null) {
        return whileNode.setTest(lc, convert(test, Type.BOOLEAN));
    }
    return whileNode;
}
Example #19
Source File: LocalVariableTypesCalculator.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    if(!reachable) {
        return false;
    }
    if(whileNode.isDoWhile()) {
        enterDoWhileLoop(whileNode);
    } else {
        enterTestFirstLoop(whileNode, null, null, false);
    }
    return false;
}
Example #20
Source File: PrintVisitor.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    if (whileNode.isDoWhile()) {
        sb.append("do");
        whileNode.getBody().accept(this);
        sb.append(' ');
        whileNode.toString(sb);
    } else {
        whileNode.toString(sb);
        whileNode.getBody().accept(this);
    }

    return false;
}
Example #21
Source File: Parser.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           do Statement while( Expression ) ;
 *           ...
 *
 * See 12.6
 *
 * Parse DO WHILE statement.
 */
private void doStatement() {
    // Capture DO token.
    final long doToken = token;
    // DO tested in the caller.
    next();

    WhileNode doWhileNode = new WhileNode(-1, doToken, Token.descPosition(doToken), true);
    lc.push(doWhileNode);

    try {
       // Get DO body.
        final Block body = getStatement();

        expect(WHILE);
        expect(LPAREN);
        final int doLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);

        if (type == SEMICOLON) {
            endOfLine();
        }
        doWhileNode.setFinish(finish);

        //line number is last
        appendStatement(doWhileNode =
            new WhileNode(doLine, doToken, finish, true).
                setBody(lc, body).
                setTest(lc, test));
    } finally {
        lc.pop(doWhileNode);
    }
}
Example #22
Source File: PrintVisitor.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    printLocalVariableConversion(whileNode);
    if (whileNode.isDoWhile()) {
        sb.append("do");
        whileNode.getBody().accept(this);
        sb.append(' ');
        whileNode.toString(sb, printTypes);
    } else {
        whileNode.toString(sb, printTypes);
        whileNode.getBody().accept(this);
    }

    return false;
}
Example #23
Source File: PrintVisitor.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    if (whileNode.isDoWhile()) {
        sb.append("do");
        whileNode.getBody().accept(this);
        sb.append(' ');
        whileNode.toString(sb);
    } else {
        whileNode.toString(sb);
        whileNode.getBody().accept(this);
    }

    return false;
}
Example #24
Source File: IRTranslator.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    final ExpressionTree condTree = translateExpr(whileNode.getTest());
    final StatementTree statTree = translateBlock(whileNode.getBody());

    if (whileNode.isDoWhile()) {
        curStat = new DoWhileLoopTreeImpl(whileNode, condTree, statTree);
    } else {
        curStat = new WhileLoopTreeImpl(whileNode, condTree, statTree);
    }

    return false;
}
Example #25
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public boolean enterWhileNode(final WhileNode whileNode) {
    if(!reachable) {
        return false;
    }
    if(whileNode.isDoWhile()) {
        enterDoWhileLoop(whileNode);
    } else {
        enterTestFirstLoop(whileNode, null, null, false);
    }
    return false;
}
Example #26
Source File: LocalVariableTypesCalculator.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private void enterDoWhileLoop(final WhileNode loopNode) {
    assertTypeStackIsEmpty();
    final JoinPredecessorExpression test = loopNode.getTest();
    final Block body = loopNode.getBody();
    final Label continueLabel = loopNode.getContinueLabel();
    final Label breakLabel = loopNode.getBreakLabel();
    final Map<Symbol, LvarType> beforeLoopTypes = localVariableTypes;
    final Label repeatLabel = new Label("");
    for(;;) {
        jumpToLabel(loopNode, repeatLabel, beforeLoopTypes);
        final Map<Symbol, LvarType> beforeRepeatTypes = localVariableTypes;
        body.accept(this);
        if(reachable) {
            jumpToLabel(body, continueLabel);
        }
        joinOnLabel(continueLabel);
        if(!reachable) {
            break;
        }
        visitExpressionOnEmptyStack(test);
        jumpToLabel(test, breakLabel);
        if(isAlwaysFalse(test)) {
            break;
        }
        jumpToLabel(test, repeatLabel);
        joinOnLabel(repeatLabel);
        if(localVariableTypes.equals(beforeRepeatTypes)) {
            break;
        }
        resetJoinPoint(continueLabel);
        resetJoinPoint(breakLabel);
        resetJoinPoint(repeatLabel);
    }

    if(isAlwaysTrue(test)) {
        doesNotContinueSequentially();
    }

    leaveBreakable(loopNode);
}
Example #27
Source File: Lower.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Expression test = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (isAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), body, 0).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example #28
Source File: Lower.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
@Override
public Node leaveWhileNode(final WhileNode whileNode) {
    final Node test  = whileNode.getTest();
    final Block body = whileNode.getBody();

    if (conservativeAlwaysTrue(test)) {
        //turn it into a for node without a test.
        final ForNode forNode = (ForNode)new ForNode(whileNode.getLineNumber(), whileNode.getToken(), whileNode.getFinish(), null, null, body, null, ForNode.IS_FOR).accept(this);
        lc.replace(whileNode, forNode);
        return forNode;
    }

     return addStatement(checkEscape(whileNode));
}
Example #29
Source File: Parser.java    From TencentKona-8 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           do Statement while( Expression ) ;
 *           ...
 *
 * See 12.6
 *
 * Parse DO WHILE statement.
 */
private void doStatement() {
    // Capture DO token.
    final long doToken = token;
    // DO tested in the caller.
    next();

    WhileNode doWhileNode = new WhileNode(-1, doToken, Token.descPosition(doToken), true);
    lc.push(doWhileNode);

    try {
       // Get DO body.
        final Block body = getStatement();

        expect(WHILE);
        expect(LPAREN);
        final int doLine = line;
        final JoinPredecessorExpression test = joinPredecessorExpression();
        expect(RPAREN);

        if (type == SEMICOLON) {
            endOfLine();
        }
        doWhileNode.setFinish(finish);

        //line number is last
        appendStatement(doWhileNode =
            new WhileNode(doLine, doToken, finish, true).
                setBody(lc, body).
                setTest(lc, test));
    } finally {
        lc.pop(doWhileNode);
    }
}
Example #30
Source File: Parser.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * ...IterationStatement :
 *           ...
 *           do Statement while( Expression ) ;
 *           ...
 *
 * See 12.6
 *
 * Parse DO WHILE statement.
 */
private void doStatement() {
    // Capture DO token.
    final int  doLine  = line;
    final long doToken = token;
    // DO tested in the caller.
    next();

    WhileNode doWhileNode = new WhileNode(doLine, doToken, Token.descPosition(doToken), true);
    lc.push(doWhileNode);

    try {
       // Get DO body.
        doWhileNode = doWhileNode.setBody(lc, getStatement());

        expect(WHILE);
        expect(LPAREN);
        doWhileNode = doWhileNode.setTest(lc, expression());
        expect(RPAREN);

        if (type == SEMICOLON) {
            endOfLine();
        }
        doWhileNode.setFinish(finish);
        appendStatement(doWhileNode);
    } finally {
        lc.pop(doWhileNode);
    }
}