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

                encoder.textToken(m.group().substring(0, 1), TokenType.delimiter);
                if (m.group().length() > 2) {
                    encoder.textToken(m.group().substring(1, m.group().length() - 1), TokenType.content);
                }
                if (m.group().length() >= 2) {
                    encoder.textToken(m.group().substring(m.group().length() - 1), TokenType.delimiter);
                }
                encoder.endGroup(TokenType.string);
            }
            else if ((m = source.scan(FUNCTION)) != null) {
                encoder.beginGroup(TokenType.function);

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                }
                encoder.endGroup(TokenType.string);
            }
            else if ((m = source.scan(FUNCTION)) != null) {
                encoder.beginGroup(TokenType.function);
                Matcher functionMatcher = FUNCTION_NAME.matcher(m.group());
                functionMatcher.lookingAt();
                String start = functionMatcher.group();
                encoder.textToken(start, TokenType.delimiter);
                if (PARENTHESES_END.matcher(m.group().substring(m.group().length() - 1)).matches()) {
                    if (m.group().length() > start.length() + 1) {

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                encoder.beginGroup(TokenType.function);
                Matcher functionMatcher = FUNCTION_NAME.matcher(m.group());
                functionMatcher.lookingAt();
                String start = functionMatcher.group();
                encoder.textToken(start, TokenType.delimiter);
                if (PARENTHESES_END.matcher(m.group().substring(m.group().length() - 1)).matches()) {
                    if (m.group().length() > start.length() + 1) {
                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }

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                encoder.beginGroup(TokenType.function);
                Matcher functionMatcher = FUNCTION_NAME.matcher(m.group());
                functionMatcher.lookingAt();
                String start = functionMatcher.group();
                encoder.textToken(start, TokenType.delimiter);
                if (PARENTHESES_END.matcher(m.group().substring(m.group().length() - 1)).matches()) {
                    if (m.group().length() > start.length() + 1) {
                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }

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                Matcher functionMatcher = FUNCTION_NAME.matcher(m.group());
                functionMatcher.lookingAt();
                String start = functionMatcher.group();
                encoder.textToken(start, TokenType.delimiter);
                if (PARENTHESES_END.matcher(m.group().substring(m.group().length() - 1)).matches()) {
                    if (m.group().length() > start.length() + 1) {
                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }
                else if (m.group().length() > start.length()) {

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                functionMatcher.lookingAt();
                String start = functionMatcher.group();
                encoder.textToken(start, TokenType.delimiter);
                if (PARENTHESES_END.matcher(m.group().substring(m.group().length() - 1)).matches()) {
                    if (m.group().length() > start.length() + 1) {
                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }
                else if (m.group().length() > start.length()) {
                    encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);

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                functionMatcher.lookingAt();
                String start = functionMatcher.group();
                encoder.textToken(start, TokenType.delimiter);
                if (PARENTHESES_END.matcher(m.group().substring(m.group().length() - 1)).matches()) {
                    if (m.group().length() > start.length() + 1) {
                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }
                else if (m.group().length() > start.length()) {
                    encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);

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                    if (m.group().length() > start.length() + 1) {
                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }
                else if (m.group().length() > start.length()) {
                    encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                }
                encoder.endGroup(TokenType.function);
            }
            else if ((m = source.scan(FLOAT)) != null) {

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                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }
                else if (m.group().length() > start.length()) {
                    encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                }
                encoder.endGroup(TokenType.function);
            }
            else if ((m = source.scan(FLOAT)) != null) {
                encoder.textToken(m.group(), TokenType.float_);

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                        encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                        encoder.textToken(")", TokenType.delimiter);
                    }
                }
                else if (m.group().length() > start.length()) {
                    encoder.textToken(m.group().substring(start.length(), m.group().length() - 1), TokenType.content);
                }
                encoder.endGroup(TokenType.function);
            }
            else if ((m = source.scan(FLOAT)) != null) {
                encoder.textToken(m.group(), TokenType.float_);

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