Java Code Examples for jdk.nashorn.internal.ir.SwitchNode#setCases()

The following examples show how to use jdk.nashorn.internal.ir.SwitchNode#setCases() . 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: Parser.java    From TencentKona-8 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 2
Source File: Parser.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 3
Source File: Parser.java    From openjdk-jdk8u with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 4
Source File: Parser.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 5
Source File: Parser.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 6
Source File: Parser.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 7
Source File: Attr.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public Node leaveSwitchNode(final SwitchNode switchNode) {
    Type type = Type.UNKNOWN;

    final List<CaseNode> newCases = new ArrayList<>();
    for (final CaseNode caseNode : switchNode.getCases()) {
        final Node test = caseNode.getTest();

        CaseNode newCaseNode = caseNode;
        if (test != null) {
            if (test instanceof LiteralNode) {
                //go down to integers if we can
                final LiteralNode<?> lit = (LiteralNode<?>)test;
                if (lit.isNumeric() && !(lit.getValue() instanceof Integer)) {
                    if (JSType.isRepresentableAsInt(lit.getNumber())) {
                        newCaseNode = caseNode.setTest((Expression)LiteralNode.newInstance(lit, lit.getInt32()).accept(this));
                    }
                }
            } else {
                // the "all integer" case that CodeGenerator optimizes for currently assumes literals only
                type = Type.OBJECT;
            }

            final Type newCaseType = newCaseNode.getTest().getType();
            if (newCaseType.isBoolean()) {
                type = Type.OBJECT; //booleans and integers aren't assignment compatible
            } else {
                type = Type.widest(type, newCaseType);
            }
        }

        newCases.add(newCaseNode);
    }

    //only optimize for all integers
    if (!type.isInteger()) {
        type = Type.OBJECT;
    }

    switchNode.setTag(newInternal(lc.getCurrentFunction().uniqueName(SWITCH_TAG_PREFIX.symbolName()), type));

    end(switchNode);

    return switchNode.setCases(lc, newCases);
}
Example 8
Source File: Parser.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 9
Source File: Attr.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public Node leaveSwitchNode(final SwitchNode switchNode) {
    Type type = Type.UNKNOWN;

    final List<CaseNode> newCases = new ArrayList<>();
    for (final CaseNode caseNode : switchNode.getCases()) {
        final Node test = caseNode.getTest();

        CaseNode newCaseNode = caseNode;
        if (test != null) {
            if (test instanceof LiteralNode) {
                //go down to integers if we can
                final LiteralNode<?> lit = (LiteralNode<?>)test;
                if (lit.isNumeric() && !(lit.getValue() instanceof Integer)) {
                    if (JSType.isRepresentableAsInt(lit.getNumber())) {
                        newCaseNode = caseNode.setTest((Expression)LiteralNode.newInstance(lit, lit.getInt32()).accept(this));
                    }
                }
            } else {
                // the "all integer" case that CodeGenerator optimizes for currently assumes literals only
                type = Type.OBJECT;
            }

            final Type newCaseType = newCaseNode.getTest().getType();
            if (newCaseType.isBoolean()) {
                type = Type.OBJECT; //booleans and integers aren't assignment compatible
            } else {
                type = Type.widest(type, newCaseType);
            }
        }

        newCases.add(newCaseNode);
    }

    //only optimize for all integers
    if (!type.isInteger()) {
        type = Type.OBJECT;
    }

    switchNode.setTag(newInternal(lc.getCurrentFunction().uniqueName(SWITCH_TAG_PREFIX.symbolName()), type));

    end(switchNode);

    return switchNode.setCases(lc, newCases);
}
Example 10
Source File: Parser.java    From jdk8u_nashorn with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 11
Source File: Parser.java    From nashorn with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * SwitchStatement :
 *      switch ( Expression ) CaseBlock
 *
 * CaseBlock :
 *      { CaseClauses? }
 *      { CaseClauses? DefaultClause CaseClauses }
 *
 * CaseClauses :
 *      CaseClause
 *      CaseClauses CaseClause
 *
 * CaseClause :
 *      case Expression : StatementList?
 *
 * DefaultClause :
 *      default : StatementList?
 *
 * See 12.11
 *
 * Parse SWITCH statement.
 */
private void switchStatement() {
    final int  switchLine  = line;
    final long switchToken = token;
    // SWITCH tested in caller.
    next();

    // Create and add switch statement.
    SwitchNode switchNode = new SwitchNode(switchLine, switchToken, Token.descPosition(switchToken), null, new ArrayList<CaseNode>(), null);
    lc.push(switchNode);

    try {
        expect(LPAREN);
        switchNode = switchNode.setExpression(lc, expression());
        expect(RPAREN);

        expect(LBRACE);

        // Prepare to accumulate cases.
        final List<CaseNode> cases = new ArrayList<>();
        CaseNode defaultCase = null;

        while (type != RBRACE) {
            // Prepare for next case.
            Expression caseExpression = null;
            final long caseToken = token;

            switch (type) {
            case CASE:
                next();
                caseExpression = expression();
                break;

            case DEFAULT:
                if (defaultCase != null) {
                    throw error(AbstractParser.message("duplicate.default.in.switch"));
                }
                next();
                break;

            default:
                // Force an error.
                expect(CASE);
                break;
            }

            expect(COLON);

            // Get CASE body.
            final Block statements = getBlock(false);
            final CaseNode caseNode = new CaseNode(caseToken, finish, caseExpression, statements);
            statements.setFinish(finish);

            if (caseExpression == null) {
                defaultCase = caseNode;
            }

            cases.add(caseNode);
        }

        switchNode = switchNode.setCases(lc, cases, defaultCase);
        next();
        switchNode.setFinish(finish);

        appendStatement(switchNode);
    } finally {
        lc.pop(switchNode);
    }
}
Example 12
Source File: Attr.java    From nashorn with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public Node leaveSwitchNode(final SwitchNode switchNode) {
    Type type = Type.UNKNOWN;

    final List<CaseNode> newCases = new ArrayList<>();
    for (final CaseNode caseNode : switchNode.getCases()) {
        final Node test = caseNode.getTest();

        CaseNode newCaseNode = caseNode;
        if (test != null) {
            if (test instanceof LiteralNode) {
                //go down to integers if we can
                final LiteralNode<?> lit = (LiteralNode<?>)test;
                if (lit.isNumeric() && !(lit.getValue() instanceof Integer)) {
                    if (JSType.isRepresentableAsInt(lit.getNumber())) {
                        newCaseNode = caseNode.setTest((Expression)LiteralNode.newInstance(lit, lit.getInt32()).accept(this));
                    }
                }
            } else {
                // the "all integer" case that CodeGenerator optimizes for currently assumes literals only
                type = Type.OBJECT;
            }

            final Type newCaseType = newCaseNode.getTest().getType();
            if (newCaseType.isBoolean()) {
                type = Type.OBJECT; //booleans and integers aren't assignment compatible
            } else {
                type = Type.widest(type, newCaseType);
            }
        }

        newCases.add(newCaseNode);
    }

    //only optimize for all integers
    if (!type.isInteger()) {
        type = Type.OBJECT;
    }

    switchNode.setTag(newInternal(lc.getCurrentFunction().uniqueName(SWITCH_TAG_PREFIX.symbolName()), type));

    end(switchNode);

    return switchNode.setCases(lc, newCases);
}