G2 code generation used after benchmarking.
style benchmark old ns/op new ns/op delta
T0 BenchmarkParser 672 5631 +737.95%
T1 BenchmarkParser 672 5579 +730.21%
G0 BenchmarkParser 672 4049 +502.53%
G1 BenchmarkParser 672 3868 +475.60%
G2 BenchmarkParser 672 3543 +427.23%
F0 and F1 create massive Go source (6.0M) and so were not tested.
Invalid tests removed, additional tests for invalid input to be added
later.
