Add unused stubs for tracking parser state.
Add unused stubs for tracking parser state.

begray/intellij-haskforce,charleso/intellij-haskforce,begray/intellij-haskforce,KasperJanssens/intellij-haskforce,carymrobbins/intellij-haskforce,begray/intellij-haskforce,carymrobbins/intellij-haskforce,charleso/intellij-haskforce,carymrobbins/intellij-haskforce,KasperJanssens/intellij-haskforce,charleso/intellij-haskforce