Java Code Examples for jdk.nashorn.internal.runtime.regexp.joni.ast.QuantifierNode#REPEAT_INFINITE

The following examples show how to use jdk.nashorn.internal.runtime.regexp.joni.ast.QuantifierNode#REPEAT_INFINITE . 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: Lexer.java    From TencentKona-8 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 2
Source File: Lexer.java    From jdk8u60 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 3
Source File: Lexer.java    From openjdk-jdk8u with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 4
Source File: Lexer.java    From openjdk-jdk8u-backup with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 5
Source File: Lexer.java    From openjdk-jdk9 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 6
Source File: Lexer.java    From hottub with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 7
Source File: Lexer.java    From openjdk-8-source with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        } else {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) return invalidRangeQuantifier(synAllow);

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) return invalidRangeQuantifier(synAllow);
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) return invalidRangeQuantifier(synAllow);
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) return invalidRangeQuantifier(synAllow);
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) return invalidRangeQuantifier(synAllow);
        fetch();
    }

    if (c != '}') return invalidRangeQuantifier(synAllow);

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 8
Source File: Lexer.java    From openjdk-8 with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        } else {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) return invalidRangeQuantifier(synAllow);

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) return invalidRangeQuantifier(synAllow);
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) return invalidRangeQuantifier(synAllow);
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) return invalidRangeQuantifier(synAllow);
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) return invalidRangeQuantifier(synAllow);
        fetch();
    }

    if (c != '}') return invalidRangeQuantifier(synAllow);

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 9
Source File: Lexer.java    From jdk8u_nashorn with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    final boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        }
        throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        final int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) {
                return invalidRangeQuantifier(synAllow);
            }
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) {
            return invalidRangeQuantifier(synAllow);
        }
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) {
        return invalidRangeQuantifier(synAllow);
    }
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) {
            return invalidRangeQuantifier(synAllow);
        }
        fetch();
    }

    if (c != '}') {
        return invalidRangeQuantifier(synAllow);
    }

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}
Example 10
Source File: Lexer.java    From nashorn with GNU General Public License v2.0 4 votes vote down vote up 
/**
 * @return 0: normal {n,m}, 2: fixed {n}
 * !introduce returnCode here
 */
private int fetchRangeQuantifier() {
    mark();
    boolean synAllow = syntax.allowInvalidInterval();

    if (!left()) {
        if (synAllow) {
            return 1; /* "....{" : OK! */
        } else {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    if (!synAllow) {
        c = peek();
        if (c == ')' || c == '(' || c == '|') {
            throw new SyntaxException(ERR_END_PATTERN_AT_LEFT_BRACE);
        }
    }

    int low = scanUnsignedNumber();
    if (low < 0) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }
    if (low > Config.MAX_REPEAT_NUM) {
        throw new SyntaxException(ErrorMessages.ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
    }

    boolean nonLow = false;
    if (p == _p) { /* can't read low */
        if (syntax.allowIntervalLowAbbrev()) {
            low = 0;
            nonLow = true;
        } else {
            return invalidRangeQuantifier(synAllow);
        }
    }

    if (!left()) return invalidRangeQuantifier(synAllow);

    fetch();
    int up;
    int ret = 0;
    if (c == ',') {
        int prev = p; // ??? last
        up = scanUnsignedNumber();
        if (up < 0) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }
        if (up > Config.MAX_REPEAT_NUM) {
            throw new ValueException(ERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE);
        }

        if (p == prev) {
            if (nonLow) return invalidRangeQuantifier(synAllow);
            up = QuantifierNode.REPEAT_INFINITE; /* {n,} : {n,infinite} */
        }
    } else {
        if (nonLow) return invalidRangeQuantifier(synAllow);
        unfetch();
        up = low; /* {n} : exact n times */
        ret = 2; /* fixed */
    }

    if (!left()) return invalidRangeQuantifier(synAllow);
    fetch();

    if (syntax.opEscBraceInterval()) {
        if (c != syntax.metaCharTable.esc) return invalidRangeQuantifier(synAllow);
        fetch();
    }

    if (c != '}') return invalidRangeQuantifier(synAllow);

    if (!isRepeatInfinite(up) && low > up) {
        throw new ValueException(ERR_UPPER_SMALLER_THAN_LOWER_IN_REPEAT_RANGE);
    }

    token.type = TokenType.INTERVAL;
    token.setRepeatLower(low);
    token.setRepeatUpper(up);

    return ret; /* 0: normal {n,m}, 2: fixed {n} */
}