44 lines
852 B
C
44 lines
852 B
C
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#ifndef SQLLEXER_H
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#define SQLLEXER_H
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#include <QString>
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enum class BasicTokenType {
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None,
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End, // End of input
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Symbol, // can be many things, keyword, object name, operator, ..
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Comment,
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QuotedString,
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DollarQuotedString,
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QuotedIdentifier
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};
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enum class LexerState {
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Null,
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InDollarQuotedString
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};
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class SqlLexer {
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public:
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SqlLexer(const QString &block, LexerState currentstate);
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QChar nextChar();
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QChar peekChar();
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/**
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* @brief NextBasicToken
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* @param in
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* @param ofs
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* @param start
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* @param length
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* @return false when input seems invalid, it will return what it did recognize but something wasn't right, parser should try to recover
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*/
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bool nextBasicToken(int &startpos, int &length, BasicTokenType &tokentype, QString &out);
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private:
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QString m_block;
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int m_pos = 0;
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LexerState m_state;
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};
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#endif // SQLLEXER_H
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