A simple query parser generated by flex and bison

This is a simple query parser that recognizes logic queries like:

• this that // Parsed as "this AND that"
• this AND that
• this AND NOT that
• this AND NOT (he AND her)

• $ mkdir build
• $ cd build
• $ cmake ..
• $ make

./parser "this AND that"

This parser is not thread-safe since it uses global variables while parsing.

For those who may want to embed a thread-safe parser into their own application, please see SimpleQueryParser++

This is a toy project. I tried three methods to build a query parser. You can find the other two:

• SimpleQueryParserPlusPlus : A simple query parser generated by flex and bison (C++ Language)
• SimpleQueryParserSpirit : A simple query parser written in Boost.Spirit (C++ Language)