Examples of java.util.regex.MatchResult.group()

java.util.regex.MatchResult.group()
Returns the input subsequence matched by the previous match.
For a matcher m with input sequence s, the expressions m.group() and s.substring(m.start(), m.end()) are equivalent.

Note that some patterns, for example a*, match the empty string. This method will return the empty string when the pattern successfully matches the empty string in the input.
@return The (possibly empty) subsequence matched by the previous match,in string form @throws IllegalStateException If no match has yet been attempted, or if the previous match operation failed


    private boolean value(StringScanner source, Encoder encoder, Context context) {
        MatchResult m;


        if ((m = source.scan(OPERATOR)) != null) {
            if (context.state == State.colon && (m.group().equals(":") | m.group().equals("-"))) {
                context.state = State.value;
            }
            else if (context.state == State.initial && m.group().equals("-")) {
                context.state = State.value;
            }

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    private boolean value(StringScanner source, Encoder encoder, Context context) {
        MatchResult m;


        if ((m = source.scan(OPERATOR)) != null) {
            if (context.state == State.colon && (m.group().equals(":") | m.group().equals("-"))) {
                context.state = State.value;
            }
            else if (context.state == State.initial && m.group().equals("-")) {
                context.state = State.value;
            }

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        if ((m = source.scan(OPERATOR)) != null) {
            if (context.state == State.colon && (m.group().equals(":") | m.group().equals("-"))) {
                context.state = State.value;
            }
            else if (context.state == State.initial && m.group().equals("-")) {
                context.state = State.value;
            }
            encoder.textToken(m.group(), TokenType.operator);
            return true;
        }

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                context.state = State.value;
            }
            else if (context.state == State.initial && m.group().equals("-")) {
                context.state = State.value;
            }
            encoder.textToken(m.group(), TokenType.operator);
            return true;
        }
        else if ((m = source.scan(OPERATOR_BRACKETS)) != null) {
            encoder.textToken(m.group(), TokenType.operator);
            return true;

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            }
            encoder.textToken(m.group(), TokenType.operator);
            return true;
        }
        else if ((m = source.scan(OPERATOR_BRACKETS)) != null) {
            encoder.textToken(m.group(), TokenType.operator);
            return true;
        }
        else if (context.state == State.initial && (m = source.scan(KEY)) != null) {
            encoder.textToken(m.group(), TokenType.key);
            context.key_indent = source.column(source.index() - m.group().length()) - 1;

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        else if ((m = source.scan(OPERATOR_BRACKETS)) != null) {
            encoder.textToken(m.group(), TokenType.operator);
            return true;
        }
        else if (context.state == State.initial && (m = source.scan(KEY)) != null) {
            encoder.textToken(m.group(), TokenType.key);
            context.key_indent = source.column(source.index() - m.group().length()) - 1;
            context.state = State.colon;
            return true;
        }
        else if ((m = source.scan(KEY_2)) != null) {

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            encoder.textToken(m.group(), TokenType.operator);
            return true;
        }
        else if (context.state == State.initial && (m = source.scan(KEY)) != null) {
            encoder.textToken(m.group(), TokenType.key);
            context.key_indent = source.column(source.index() - m.group().length()) - 1;
            context.state = State.colon;
            return true;
        }
        else if ((m = source.scan(KEY_2)) != null) {
            encoder.beginGroup(TokenType.key);

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            context.state = State.colon;
            return true;
        }
        else if ((m = source.scan(KEY_2)) != null) {
            encoder.beginGroup(TokenType.key);
            String match = m.group();
            encoder.textToken(match.substring(0, 1), TokenType.delimiter);
            if (match.length() > 2) {
                encoder.textToken(match.substring(1, match.length() - 1), TokenType.content);
            }
            encoder.textToken(match.substring(match.length() - 1), TokenType.delimiter);

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            context.key_indent = source.column(source.index() - match.length()) - 1;
            context.state = State.colon;
            return true;
        }
        else if ((m = source.scan(TYPE_EXP)) != null) {
            encoder.textToken(m.group(1), TokenType.type);
            if (m.group(2) != null) {
                encoder.textToken(":", TokenType.operator);
                encoder.textToken(m.group(3), TokenType.class_);
            }
            return true;

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            context.state = State.colon;
            return true;
        }
        else if ((m = source.scan(TYPE_EXP)) != null) {
            encoder.textToken(m.group(1), TokenType.type);
            if (m.group(2) != null) {
                encoder.textToken(":", TokenType.operator);
                encoder.textToken(m.group(3), TokenType.class_);
            }
            return true;
        }

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