539aa05a64
Always reading runes (rather than bytes) has negligible overhead (a simple if at the moment - it can be eliminated eventually) but simplifies the lexer logic and opens up the door for speedups. In the process remove many int conversions that are now not needed anymore. Also, because identifiers are now more easily recognized, remove talph label and move identifier lexing "in place". Also, instead of accepting all chars < 0x80 and then check for "frogs", only permit valid characters in the first place. Removes an extra call for common simple tokens and leads to simpler logic. `time go build -a net/http` (best of 5 runs) seems 1% faster. Assuming this is in the noise, there is no noticeable performance degradation with this change. Change-Id: I3454c9bf8b91808188cf7a5f559341749da9a1eb Reviewed-on: https://go-review.googlesource.com/19847 Reviewed-by: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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The Go Programming Language
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Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this file). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install-source.html). You should also add the Go binary directory $GOROOT/bin to your shell's path.
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