starting with expressions

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
new stuff

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
new stuff

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
reorganized things

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
beginning of parser

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
new parser

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
refactoring

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>
tested things

Signed-off-by: Daniel Fagnan <dnfagnan@gmail.com>