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

The following examples show how to use jdk.nashorn.internal.runtime.regexp.joni.constants.EncloseType#MEMORY . 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: 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 2
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 3
Source File: ArrayCompiler.java    From openjdk-jdk8u-backup 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: 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 5
Source File: Analyser.java    From jdk8u_nashorn 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 6
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 7
Source File: Analyser.java    From openjdk-jdk9 with GNU General Public License v2.0 4 votes vote down vote up 
private int quantifiersMemoryInfo(final Node node) {
    int info = 0;

    switch(node.getType()) {
    case NodeType.LIST:
    case NodeType.ALT:
        ConsAltNode can = (ConsAltNode)node;
        do {
            final int v = quantifiersMemoryInfo(can.car);
            if (v > info) {
                info = v;
            }
        } while ((can = can.cdr) != null);
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.upper != 0) {
            info = quantifiersMemoryInfo(qn.target);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            return TargetInfo.IS_EMPTY_MEM;

        case EncloseType.OPTION:
        case EncloseNode.STOP_BACKTRACK:
            info = quantifiersMemoryInfo(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.BREF:
    case NodeType.STR:
    case NodeType.CTYPE:
    case NodeType.CCLASS:
    case NodeType.CANY:
    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return info;
}
Example 8
Source File: ArrayCompiler.java    From openjdk-jdk9 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 9
Source File: Analyser.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up 
private int getMinMatchLength(Node node) {
    int min = 0;

    switch (node.getType()) {
    case NodeType.BREF:
        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 {
            Node x = y.car;
            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:
        QuantifierNode qn = (QuantifierNode)node;
        if (qn.lower > 0) {
            min = getMinMatchLength(qn.target);
            min = MinMaxLen.distanceMultiply(min, qn.lower);
        }
        break;

    case NodeType.ENCLOSE:
        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;
        } // inner switch
        break;

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

    return min;
}
Example 10
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 11
Source File: Analyser.java    From nashorn with GNU General Public License v2.0 4 votes vote down vote up 
private int quantifiersMemoryInfo(Node node) {
    int info = 0;

    switch(node.getType()) {
    case NodeType.LIST:
    case NodeType.ALT:
        ConsAltNode can = (ConsAltNode)node;
        do {
            int v = quantifiersMemoryInfo(can.car);
            if (v > info) info = v;
        } while ((can = can.cdr) != null);
        break;

    case NodeType.QTFR:
        QuantifierNode qn = (QuantifierNode)node;
        if (qn.upper != 0) {
            info = quantifiersMemoryInfo(qn.target);
        }
        break;

    case NodeType.ENCLOSE:
        EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            return TargetInfo.IS_EMPTY_MEM;

        case EncloseType.OPTION:
        case EncloseNode.STOP_BACKTRACK:
            info = quantifiersMemoryInfo(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.BREF:
    case NodeType.STR:
    case NodeType.CTYPE:
    case NodeType.CCLASS:
    case NodeType.CANY:
    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return info;
}
Example 12
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 13
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 14
Source File: Analyser.java    From jdk8u_nashorn with GNU General Public License v2.0 4 votes vote down vote up 
private int quantifiersMemoryInfo(final Node node) {
    int info = 0;

    switch(node.getType()) {
    case NodeType.LIST:
    case NodeType.ALT:
        ConsAltNode can = (ConsAltNode)node;
        do {
            final int v = quantifiersMemoryInfo(can.car);
            if (v > info) {
                info = v;
            }
        } while ((can = can.cdr) != null);
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.upper != 0) {
            info = quantifiersMemoryInfo(qn.target);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            return TargetInfo.IS_EMPTY_MEM;

        case EncloseType.OPTION:
        case EncloseNode.STOP_BACKTRACK:
            info = quantifiersMemoryInfo(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.BREF:
    case NodeType.STR:
    case NodeType.CTYPE:
    case NodeType.CCLASS:
    case NodeType.CANY:
    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return info;
}
Example 15
Source File: Analyser.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up 
private int quantifiersMemoryInfo(final Node node) {
    int info = 0;

    switch(node.getType()) {
    case NodeType.LIST:
    case NodeType.ALT:
        ConsAltNode can = (ConsAltNode)node;
        do {
            final int v = quantifiersMemoryInfo(can.car);
            if (v > info) {
                info = v;
            }
        } while ((can = can.cdr) != null);
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.upper != 0) {
            info = quantifiersMemoryInfo(qn.target);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            return TargetInfo.IS_EMPTY_MEM;

        case EncloseType.OPTION:
        case EncloseNode.STOP_BACKTRACK:
            info = quantifiersMemoryInfo(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.BREF:
    case NodeType.STR:
    case NodeType.CTYPE:
    case NodeType.CCLASS:
    case NodeType.CANY:
    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return info;
}
Example 16
Source File: ArrayCompiler.java    From jdk8u60 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: Analyser.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
private int getMinMatchLength(Node node) {
    int min = 0;

    switch (node.getType()) {
    case NodeType.BREF:
        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 {
            Node x = y.car;
            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:
        QuantifierNode qn = (QuantifierNode)node;
        if (qn.lower > 0) {
            min = getMinMatchLength(qn.target);
            min = MinMaxLen.distanceMultiply(min, qn.lower);
        }
        break;

    case NodeType.ENCLOSE:
        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;
        } // inner switch
        break;

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

    return min;
}
Example 18
Source File: Analyser.java    From TencentKona-8 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: Analyser.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up 
private int quantifiersMemoryInfo(final Node node) {
    int info = 0;

    switch(node.getType()) {
    case NodeType.LIST:
    case NodeType.ALT:
        ConsAltNode can = (ConsAltNode)node;
        do {
            final int v = quantifiersMemoryInfo(can.car);
            if (v > info) {
                info = v;
            }
        } while ((can = can.cdr) != null);
        break;

    case NodeType.QTFR:
        final QuantifierNode qn = (QuantifierNode)node;
        if (qn.upper != 0) {
            info = quantifiersMemoryInfo(qn.target);
        }
        break;

    case NodeType.ENCLOSE:
        final EncloseNode en = (EncloseNode)node;
        switch (en.type) {
        case EncloseType.MEMORY:
            return TargetInfo.IS_EMPTY_MEM;

        case EncloseType.OPTION:
        case EncloseNode.STOP_BACKTRACK:
            info = quantifiersMemoryInfo(en.target);
            break;

        default:
            break;
        } // inner switch
        break;

    case NodeType.BREF:
    case NodeType.STR:
    case NodeType.CTYPE:
    case NodeType.CCLASS:
    case NodeType.CANY:
    case NodeType.ANCHOR:
    default:
        break;
    } // switch

    return info;
}