John Stiles 8d3642e200 Add checkpointing functionality to the Parser. ... This allows us to roll the Parser back to an earlier state if we need to do so. This includes: - rewinding the lexer - restoring the previous Pushback node - backing out AST nodes - backing out errors This functionality is used to back out of parsing a vardecl if we discover mid-stream that it is actually an expression statement that coincidentally starts with the name of a type. Change-Id: Ia5feb45019693931c1e6870e3ff7a5398924c863 Bug: skia:11198 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/356997 Commit-Queue: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com> Auto-Submit: John Stiles <johnstiles@google.com>		2021-01-22 16:42:33 +00:00
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golden	Fix overzealous optimization of short-circuits.	2021-01-20 20:24:27 +00:00
BoolFolding.sksl	Implement constant folding for (bool == bool) and (bool != bool).	2021-01-20 14:22:35 +00:00
FloatFolding.sksl	Migrate constant folding tests into a separate directory.	2021-01-11 18:05:18 +00:00
IntFolding.sksl	Update tests which mix int and float types without casts.	2021-01-13 19:47:13 +00:00
MatrixFolding.sksl	Migrate constant folding tests into a separate directory.	2021-01-11 18:05:18 +00:00
ShortCircuitBoolFolding.sksl	Add checkpointing functionality to the Parser.	2021-01-22 16:42:33 +00:00
VectorScalarFolding.sksl	Update tests which mix int and float types without casts.	2021-01-13 19:47:13 +00:00
VectorVectorFolding.sksl	Update tests which mix int and float types without casts.	2021-01-13 19:47:13 +00:00