Repeat less code in Gradient::parse_function
Repeat less code in Gradient::parse_function

SimonSapin/servo,eddyb/servo,avadacatavra/servo,upsuper/servo,emilio/servo,KiChjang/servo,notriddle/servo,emilio/servo,DominoTree/servo,eddyb/servo,larsbergstrom/servo,cbrewster/servo,sadmansk/servo,eddyb/servo,anthgur/servo,SimonSapin/servo,larsbergstrom/servo,cbrewster/servo,saneyuki/servo,thiagopnts/servo,KiChjang/servo,upsuper/servo,dati91/servo,mbrubeck/servo,pyfisch/servo,splav/servo,SimonSapin/servo,pyfisch/servo,dati91/servo,CJ8664/servo,DominoTree/servo,dati91/servo,peterjoel/servo,dati91/servo,mattnenterprise/servo,dsandeephegde/servo,avadacatavra/servo,fiji-flo/servo,rnestler/servo,rnestler/servo,jimberlage/servo,nnethercote/servo,thiagopnts/servo,avadacatavra/servo,paulrouget/servo,peterjoel/servo,splav/servo,saneyuki/servo,splav/servo,jimberlage/servo,mattnenterprise/servo,dsandeephegde/servo,KiChjang/servo,rnestler/servo,mbrubeck/servo,KiChjang/servo,nnethercote/servo,splav/servo,mattnenterprise/servo,SimonSapin/servo,CJ8664/servo,jimberlage/servo,KiChjang/servo,saneyuki/servo,nnethercote/servo,nnethercote/servo,avadacatavra/servo,upsuper/servo,eddyb/servo,thiagopnts/servo,cbrewster/servo,mattnenterprise/servo,emilio/servo,mattnenterprise/servo,ConnorGBrewster/servo,eddyb/servo,anthgur/servo,saneyuki/servo,sadmansk/servo,CJ8664/servo,emilio/servo,pyfisch/servo,rnestler/servo,dati91/servo,ConnorGBrewster/servo,CJ8664/servo,ConnorGBrewster/servo,splav/servo,emilio/servo,emilio/servo,KiChjang/servo,saneyuki/servo,larsbergstrom/servo,splav/servo,mattnenterprise/servo,szeged/servo,splav/servo,mbrubeck/servo,sadmansk/servo,nnethercote/servo,CJ8664/servo,cbrewster/servo,jimberlage/servo,mbrubeck/servo,cbrewster/servo,DominoTree/servo,larsbergstrom/servo,notriddle/servo,sadmansk/servo,paulrouget/servo,saneyuki/servo,nnethercote/servo,dati91/servo,szeged/servo,rnestler/servo,peterjoel/servo,SimonSapin/servo,upsuper/servo,thiagopnts/servo,fiji-flo/servo,pyfisch/servo,larsbergstrom/servo,dsandeephegde/servo,CJ8664/servo,KiChjang/servo,notriddle/servo,fiji-flo/servo,nnethercote/servo,mbrubeck/servo,DominoTree/servo,larsbergstrom/servo,cbrewster/servo,thiagopnts/servo,paulrouget/servo,ConnorGBrewster/servo,ConnorGBrewster/servo,eddyb/servo,DominoTree/servo,ConnorGBrewster/servo,saneyuki/servo,paulrouget/servo,avadacatavra/servo,sadmansk/servo,peterjoel/servo,larsbergstrom/servo,dsandeephegde/servo,notriddle/servo,mbrubeck/servo,thiagopnts/servo,szeged/servo,peterjoel/servo,emilio/servo,canaltinova/servo,notriddle/servo,sadmansk/servo,DominoTree/servo,notriddle/servo,anthgur/servo,pyfisch/servo,peterjoel/servo,eddyb/servo,splav/servo,jimberlage/servo,dati91/servo,KiChjang/servo,rnestler/servo,thiagopnts/servo,notriddle/servo,emilio/servo,pyfisch/servo,anthgur/servo,mattnenterprise/servo,dsandeephegde/servo,DominoTree/servo,upsuper/servo,anthgur/servo,emilio/servo,ConnorGBrewster/servo,mbrubeck/servo,peterjoel/servo,larsbergstrom/servo,upsuper/servo,szeged/servo,canaltinova/servo,sadmansk/servo,fiji-flo/servo,DominoTree/servo,jimberlage/servo,ConnorGBrewster/servo,szeged/servo,jimberlage/servo,mbrubeck/servo,CJ8664/servo,nnethercote/servo,szeged/servo,canaltinova/servo,pyfisch/servo,jimberlage/servo,upsuper/servo,dsandeephegde/servo,anthgur/servo,CJ8664/servo,canaltinova/servo,cbrewster/servo,canaltinova/servo,fiji-flo/servo,fiji-flo/servo,KiChjang/servo,canaltinova/servo,paulrouget/servo,canaltinova/servo,peterjoel/servo,notriddle/servo,splav/servo,dsandeephegde/servo,pyfisch/servo,avadacatavra/servo,thiagopnts/servo,paulrouget/servo,canaltinova/servo,DominoTree/servo,dati91/servo,szeged/servo,dsandeephegde/servo,szeged/servo,szeged/servo,jimberlage/servo,fiji-flo/servo,SimonSapin/servo,upsuper/servo,rnestler/servo,paulrouget/servo,peterjoel/servo,sadmansk/servo,eddyb/servo,avadacatavra/servo,emilio/servo,larsbergstrom/servo,larsbergstrom/servo,paulrouget/servo,cbrewster/servo,paulrouget/servo,nnethercote/servo,KiChjang/servo,notriddle/servo,SimonSapin/servo,avadacatavra/servo,saneyuki/servo,mattnenterprise/servo,paulrouget/servo,rnestler/servo,anthgur/servo,nnethercote/servo,DominoTree/servo,peterjoel/servo,splav/servo,szeged/servo,fiji-flo/servo,notriddle/servo,pyfisch/servo,saneyuki/servo,anthgur/servo,SimonSapin/servo,saneyuki/servo,pyfisch/servo