Java Code Examples for jdk.nashorn.internal.runtime.regexp.joni.constants.EncloseType#STOP_BACKTRACK

The following examples show how to use jdk.nashorn.internal.runtime.regexp.joni.constants.EncloseType#STOP_BACKTRACK . 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 openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private Node parseExpRepeat(final Node targetp, final boolean group) {
    Node target = targetp;
    while (token.type == TokenType.OP_REPEAT || token.type == TokenType.INTERVAL) { // repeat:
        if (target.isInvalidQuantifier()) {
            throw new SyntaxException(ERR_TARGET_OF_REPEAT_OPERATOR_INVALID);
        }

        final QuantifierNode qtfr = new QuantifierNode(token.getRepeatLower(),
                                                 token.getRepeatUpper(),
                                                 token.type == TokenType.INTERVAL);

        qtfr.greedy = token.getRepeatGreedy();
        final int ret = qtfr.setQuantifier(target, group, env, chars, getBegin(), getEnd());
        Node qn = qtfr;

        if (token.getRepeatPossessive()) {
            final EncloseNode en = new EncloseNode(EncloseType.STOP_BACKTRACK); // node_new_enclose
            en.setTarget(qn);
            qn = en;
        }

        if (ret == 0) {
            target = qn;
        } else if (ret == 2) { /* split case: /abc+/ */
            target = ConsAltNode.newListNode(target, null);
            final ConsAltNode tmp = ((ConsAltNode)target).setCdr(ConsAltNode.newListNode(qn, null));

            fetchToken();
            return parseExpRepeatForCar(target, tmp, group);
        }
        fetchToken(); // goto re_entry
    }
    return target;
}
Example 2
Source File: ArrayCompiler.java    From openjdk-8-source with GNU General Public License v2.0 5 votes vote down vote up 
private int compileLengthEncloseNode(EncloseNode node) {
    if (node.isOption()) {
        return compileLengthOptionNode(node);
    }

    int tlen;
    if (node.target != null) {
        tlen = compileLengthTree(node.target);
    } else {
        tlen = 0;
    }

    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            len = OPSize.MEMORY_START_PUSH;
        } else {
            len = OPSize.MEMORY_START;
        }
        len += tlen + (bsAt(regex.btMemEnd, node.regNum) ? OPSize.MEMORY_END_PUSH : OPSize.MEMORY_END);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            QuantifierNode qn = (QuantifierNode)node.target;
            tlen = compileLengthTree(qn.target);
            len = tlen * qn.lower + OPSize.PUSH + tlen + OPSize.POP + OPSize.JUMP;
        } else {
            len = OPSize.PUSH_STOP_BT + tlen + OPSize.POP_STOP_BT;
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        return 0; // not reached
    } // switch
    return len;
}
Example 3
Source File: ArrayCompiler.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
private int compileLengthEncloseNode(final EncloseNode node) {
    if (node.isOption()) {
        return compileLengthOptionNode(node);
    }

    int tlen;
    if (node.target != null) {
        tlen = compileLengthTree(node.target);
    } else {
        tlen = 0;
    }

    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            len = OPSize.MEMORY_START_PUSH;
        } else {
            len = OPSize.MEMORY_START;
        }
        len += tlen + (bsAt(regex.btMemEnd, node.regNum) ? OPSize.MEMORY_END_PUSH : OPSize.MEMORY_END);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;
            tlen = compileLengthTree(qn.target);
            len = tlen * qn.lower + OPSize.PUSH + tlen + OPSize.POP + OPSize.JUMP;
        } else {
            len = OPSize.PUSH_STOP_BT + tlen + OPSize.POP_STOP_BT;
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        return 0; // not reached
    } // switch
    return len;
}
Example 4
Source File: Parser.java    From nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private Node parseExpRepeat(Node target, boolean group) {
    while (token.type == TokenType.OP_REPEAT || token.type == TokenType.INTERVAL) { // repeat:
        if (target.isInvalidQuantifier()) {
            throw new SyntaxException(ERR_TARGET_OF_REPEAT_OPERATOR_INVALID);
        }

        QuantifierNode qtfr = new QuantifierNode(token.getRepeatLower(),
                                                 token.getRepeatUpper(),
                                                 token.type == TokenType.INTERVAL);

        qtfr.greedy = token.getRepeatGreedy();
        int ret = qtfr.setQuantifier(target, group, env, chars, getBegin(), getEnd());
        Node qn = qtfr;

        if (token.getRepeatPossessive()) {
            EncloseNode en = new EncloseNode(EncloseType.STOP_BACKTRACK); // node_new_enclose
            en.setTarget(qn);
            qn = en;
        }

        if (ret == 0) {
            target = qn;
        } else if (ret == 2) { /* split case: /abc+/ */
            target = ConsAltNode.newListNode(target, null);
            ConsAltNode tmp = ((ConsAltNode)target).setCdr(ConsAltNode.newListNode(qn, null));

            fetchToken();
            return parseExpRepeatForCar(target, tmp, group);
        }
        fetchToken(); // goto re_entry
    }
    return target;
}
Example 5
Source File: Parser.java    From jdk8u60 with GNU General Public License v2.0 5 votes vote down vote up 
private Node parseExpRepeat(final Node targetp, final boolean group) {
    Node target = targetp;
    while (token.type == TokenType.OP_REPEAT || token.type == TokenType.INTERVAL) { // repeat:
        if (target.isInvalidQuantifier()) {
            throw new SyntaxException(ERR_TARGET_OF_REPEAT_OPERATOR_INVALID);
        }

        final QuantifierNode qtfr = new QuantifierNode(token.getRepeatLower(),
                                                 token.getRepeatUpper(),
                                                 token.type == TokenType.INTERVAL);

        qtfr.greedy = token.getRepeatGreedy();
        final int ret = qtfr.setQuantifier(target, group, env, chars, getBegin(), getEnd());
        Node qn = qtfr;

        if (token.getRepeatPossessive()) {
            final EncloseNode en = new EncloseNode(EncloseType.STOP_BACKTRACK); // node_new_enclose
            en.setTarget(qn);
            qn = en;
        }

        if (ret == 0) {
            target = qn;
        } else if (ret == 2) { /* split case: /abc+/ */
            target = ConsAltNode.newListNode(target, null);
            final ConsAltNode tmp = ((ConsAltNode)target).setCdr(ConsAltNode.newListNode(qn, null));

            fetchToken();
            return parseExpRepeatForCar(target, tmp, group);
        }
        fetchToken(); // goto re_entry
    }
    return target;
}
Example 6
Source File: ArrayCompiler.java    From openjdk-8 with GNU General Public License v2.0 5 votes vote down vote up 
private int compileLengthEncloseNode(EncloseNode node) {
    if (node.isOption()) {
        return compileLengthOptionNode(node);
    }

    int tlen;
    if (node.target != null) {
        tlen = compileLengthTree(node.target);
    } else {
        tlen = 0;
    }

    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            len = OPSize.MEMORY_START_PUSH;
        } else {
            len = OPSize.MEMORY_START;
        }
        len += tlen + (bsAt(regex.btMemEnd, node.regNum) ? OPSize.MEMORY_END_PUSH : OPSize.MEMORY_END);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            QuantifierNode qn = (QuantifierNode)node.target;
            tlen = compileLengthTree(qn.target);
            len = tlen * qn.lower + OPSize.PUSH + tlen + OPSize.POP + OPSize.JUMP;
        } else {
            len = OPSize.PUSH_STOP_BT + tlen + OPSize.POP_STOP_BT;
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        return 0; // not reached
    } // switch
    return len;
}
Example 7
Source File: ArrayCompiler.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
private int compileLengthEncloseNode(final EncloseNode node) {
    if (node.isOption()) {
        return compileLengthOptionNode(node);
    }

    int tlen;
    if (node.target != null) {
        tlen = compileLengthTree(node.target);
    } else {
        tlen = 0;
    }

    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            len = OPSize.MEMORY_START_PUSH;
        } else {
            len = OPSize.MEMORY_START;
        }
        len += tlen + (bsAt(regex.btMemEnd, node.regNum) ? OPSize.MEMORY_END_PUSH : OPSize.MEMORY_END);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;
            tlen = compileLengthTree(qn.target);
            len = tlen * qn.lower + OPSize.PUSH + tlen + OPSize.POP + OPSize.JUMP;
        } else {
            len = OPSize.PUSH_STOP_BT + tlen + OPSize.POP_STOP_BT;
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        return 0; // not reached
    } // switch
    return len;
}
Example 8
Source File: ArrayCompiler.java    From jdk8u_nashorn with GNU General Public License v2.0 5 votes vote down vote up 
private int compileLengthEncloseNode(final EncloseNode node) {
    if (node.isOption()) {
        return compileLengthOptionNode(node);
    }

    int tlen;
    if (node.target != null) {
        tlen = compileLengthTree(node.target);
    } else {
        tlen = 0;
    }

    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            len = OPSize.MEMORY_START_PUSH;
        } else {
            len = OPSize.MEMORY_START;
        }
        len += tlen + (bsAt(regex.btMemEnd, node.regNum) ? OPSize.MEMORY_END_PUSH : OPSize.MEMORY_END);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;
            tlen = compileLengthTree(qn.target);
            len = tlen * qn.lower + OPSize.PUSH + tlen + OPSize.POP + OPSize.JUMP;
        } else {
            len = OPSize.PUSH_STOP_BT + tlen + OPSize.POP_STOP_BT;
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        return 0; // not reached
    } // switch
    return len;
}
Example 9
Source File: Parser.java    From hottub with GNU General Public License v2.0 5 votes vote down vote up 
private Node parseExpRepeat(final Node targetp, final boolean group) {
    Node target = targetp;
    while (token.type == TokenType.OP_REPEAT || token.type == TokenType.INTERVAL) { // repeat:
        if (target.isInvalidQuantifier()) {
            throw new SyntaxException(ERR_TARGET_OF_REPEAT_OPERATOR_INVALID);
        }

        final QuantifierNode qtfr = new QuantifierNode(token.getRepeatLower(),
                                                 token.getRepeatUpper(),
                                                 token.type == TokenType.INTERVAL);

        qtfr.greedy = token.getRepeatGreedy();
        final int ret = qtfr.setQuantifier(target, group, env, chars, getBegin(), getEnd());
        Node qn = qtfr;

        if (token.getRepeatPossessive()) {
            final EncloseNode en = new EncloseNode(EncloseType.STOP_BACKTRACK); // node_new_enclose
            en.setTarget(qn);
            qn = en;
        }

        if (ret == 0) {
            target = qn;
        } else if (ret == 2) { /* split case: /abc+/ */
            target = ConsAltNode.newListNode(target, null);
            final ConsAltNode tmp = ((ConsAltNode)target).setCdr(ConsAltNode.newListNode(qn, null));

            fetchToken();
            return parseExpRepeatForCar(target, tmp, group);
        }
        fetchToken(); // goto re_entry
    }
    return target;
}
Example 10
Source File: Parser.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 5 votes vote down vote up 
private Node parseExpRepeat(final Node targetp, final boolean group) {
    Node target = targetp;
    while (token.type == TokenType.OP_REPEAT || token.type == TokenType.INTERVAL) { // repeat:
        if (target.isInvalidQuantifier()) {
            throw new SyntaxException(ERR_TARGET_OF_REPEAT_OPERATOR_INVALID);
        }

        final QuantifierNode qtfr = new QuantifierNode(token.getRepeatLower(),
                                                 token.getRepeatUpper(),
                                                 token.type == TokenType.INTERVAL);

        qtfr.greedy = token.getRepeatGreedy();
        final int ret = qtfr.setQuantifier(target, group, env, chars, getBegin(), getEnd());
        Node qn = qtfr;

        if (token.getRepeatPossessive()) {
            final EncloseNode en = new EncloseNode(EncloseType.STOP_BACKTRACK); // node_new_enclose
            en.setTarget(qn);
            qn = en;
        }

        if (ret == 0) {
            target = qn;
        } else if (ret == 2) { /* split case: /abc+/ */
            target = ConsAltNode.newListNode(target, null);
            final ConsAltNode tmp = ((ConsAltNode)target).setCdr(ConsAltNode.newListNode(qn, null));

            fetchToken();
            return parseExpRepeatForCar(target, tmp, group);
        }
        fetchToken(); // goto re_entry
    }
    return target;
}
Example 11
Source File: ArrayCompiler.java    From nashorn with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}
Example 12
Source File: Analyser.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up 
private int getMinMatchLength(final Node node) {
    int min = 0;

    switch (node.getType()) {
    case NodeType.BREF:
        final BackRefNode br = (BackRefNode)node;
        if (br.isRecursion()) {
            break;
        }

        if (br.backRef > env.numMem) {
            throw new ValueException(ERR_INVALID_BACKREF);
        }
        min = getMinMatchLength(env.memNodes[br.backRef]);

        break;

    case NodeType.LIST:
        ConsAltNode can = (ConsAltNode)node;
        do {
            min += getMinMatchLength(can.car);
        } while ((can = can.cdr) != null);
        break;

    case NodeType.ALT:
        ConsAltNode y = (ConsAltNode)node;
        do {
            final Node x = y.car;
            final int tmin = getMinMatchLength(x);
            if (y == node) {
                min = tmin;
            } else if (min > tmin) {
                min = tmin;
            }
        } while ((y = y.cdr) != null);
        break;

    case NodeType.STR:
        min = ((StringNode)node).length();
        break;

    case NodeType.CTYPE:
        min = 1;
        break;

    case NodeType.CCLASS:
    case NodeType.CANY:
        min = 1;
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.lower > 0) {
            min = getMinMatchLength(qn.target);
            min = MinMaxLen.distanceMultiply(min, qn.lower);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            if (en.isMinFixed()) {
                min = en.minLength;
            } else {
                min = getMinMatchLength(en.target);
                en.minLength = min;
                en.setMinFixed();
            }
            break;

        case EncloseType.OPTION:
        case EncloseType.STOP_BACKTRACK:
            min = getMinMatchLength(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return min;
}
Example 13
Source File: ArrayCompiler.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}
Example 14
Source File: Analyser.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
private int getMinMatchLength(final Node node) {
    int min = 0;

    switch (node.getType()) {
    case NodeType.BREF:
        final BackRefNode br = (BackRefNode)node;
        if (br.isRecursion()) {
            break;
        }

        if (br.backRef > env.numMem) {
            throw new ValueException(ERR_INVALID_BACKREF);
        }
        min = getMinMatchLength(env.memNodes[br.backRef]);

        break;

    case NodeType.LIST:
        ConsAltNode can = (ConsAltNode)node;
        do {
            min += getMinMatchLength(can.car);
        } while ((can = can.cdr) != null);
        break;

    case NodeType.ALT:
        ConsAltNode y = (ConsAltNode)node;
        do {
            final Node x = y.car;
            final int tmin = getMinMatchLength(x);
            if (y == node) {
                min = tmin;
            } else if (min > tmin) {
                min = tmin;
            }
        } while ((y = y.cdr) != null);
        break;

    case NodeType.STR:
        min = ((StringNode)node).length();
        break;

    case NodeType.CTYPE:
        min = 1;
        break;

    case NodeType.CCLASS:
    case NodeType.CANY:
        min = 1;
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.lower > 0) {
            min = getMinMatchLength(qn.target);
            min = MinMaxLen.distanceMultiply(min, qn.lower);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            if (en.isMinFixed()) {
                min = en.minLength;
            } else {
                min = getMinMatchLength(en.target);
                en.minLength = min;
                en.setMinFixed();
            }
            break;

        case EncloseType.OPTION:
        case EncloseType.STOP_BACKTRACK:
            min = getMinMatchLength(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return min;
}
Example 15
Source File: ArrayCompiler.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(final EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}
Example 16
Source File: ArrayCompiler.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(final EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}
Example 17
Source File: ArrayCompiler.java    From openjdk-jdk8u with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(final EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}
Example 18
Source File: Analyser.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up 
private int getMinMatchLength(final Node node) {
    int min = 0;

    switch (node.getType()) {
    case NodeType.BREF:
        final BackRefNode br = (BackRefNode)node;
        if (br.isRecursion()) {
            break;
        }

        if (br.backRef > env.numMem) {
            throw new ValueException(ERR_INVALID_BACKREF);
        }
        min = getMinMatchLength(env.memNodes[br.backRef]);

        break;

    case NodeType.LIST:
        ConsAltNode can = (ConsAltNode)node;
        do {
            min += getMinMatchLength(can.car);
        } while ((can = can.cdr) != null);
        break;

    case NodeType.ALT:
        ConsAltNode y = (ConsAltNode)node;
        do {
            final Node x = y.car;
            final int tmin = getMinMatchLength(x);
            if (y == node) {
                min = tmin;
            } else if (min > tmin) {
                min = tmin;
            }
        } while ((y = y.cdr) != null);
        break;

    case NodeType.STR:
        min = ((StringNode)node).length();
        break;

    case NodeType.CTYPE:
        min = 1;
        break;

    case NodeType.CCLASS:
    case NodeType.CANY:
        min = 1;
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.lower > 0) {
            min = getMinMatchLength(qn.target);
            min = MinMaxLen.distanceMultiply(min, qn.lower);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            if (en.isMinFixed()) {
                min = en.minLength;
            } else {
                min = getMinMatchLength(en.target);
                en.minLength = min;
                en.setMinFixed();
            }
            break;

        case EncloseType.OPTION:
        case EncloseType.STOP_BACKTRACK:
            min = getMinMatchLength(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return min;
}
Example 19
Source File: ArrayCompiler.java    From jdk8u_nashorn with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(final EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}
Example 20
Source File: ArrayCompiler.java    From TencentKona-8 with GNU General Public License v2.0 4 votes vote down vote up 
@Override
protected void compileEncloseNode(final EncloseNode node) {
    int len;
    switch (node.type) {
    case EncloseType.MEMORY:
        if (bsAt(regex.btMemStart, node.regNum)) {
            addOpcode(OPCode.MEMORY_START_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_START);
        }

        addMemNum(node.regNum);
        compileTree(node.target);

        if (bsAt(regex.btMemEnd, node.regNum)) {
            addOpcode(OPCode.MEMORY_END_PUSH);
        } else {
            addOpcode(OPCode.MEMORY_END);
        }
        addMemNum(node.regNum);
        break;

    case EncloseType.STOP_BACKTRACK:
        if (node.isStopBtSimpleRepeat()) {
            final QuantifierNode qn = (QuantifierNode)node.target;

            compileTreeNTimes(qn.target, qn.lower);

            len = compileLengthTree(qn.target);
            addOpcodeRelAddr(OPCode.PUSH, len + OPSize.POP + OPSize.JUMP);
            compileTree(qn.target);
            addOpcode(OPCode.POP);
            addOpcodeRelAddr(OPCode.JUMP, -(OPSize.PUSH + len + OPSize.POP + OPSize.JUMP));
        } else {
            addOpcode(OPCode.PUSH_STOP_BT);
            compileTree(node.target);
            addOpcode(OPCode.POP_STOP_BT);
        }
        break;

    default:
        newInternalException(ERR_PARSER_BUG);
        break;
    } // switch
}