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misc doc

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R=r
DELTA=50  (28 added, 0 deleted, 22 changed)
OCL=25763
CL=25770
This commit is contained in:
Russ Cox 2009-03-05 13:35:45 -08:00
parent 5b814d02f2
commit 8a7eb77880
3 changed files with 50 additions and 22 deletions
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22
src/lib/regexp/regexp.go
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@ -31,16 +31,18 @@ import (
var debug = false;
// Error codes returned by failures to parse an expression.
var ErrInternal = os.NewError("internal error");
var ErrUnmatchedLpar = os.NewError("unmatched '('");
var ErrUnmatchedRpar = os.NewError("unmatched ')'");
var ErrUnmatchedLbkt = os.NewError("unmatched '['");
var ErrUnmatchedRbkt = os.NewError("unmatched ']'");
var ErrBadRange = os.NewError("bad range in character class");
var ErrExtraneousBackslash = os.NewError("extraneous backslash");
var ErrBadClosure = os.NewError("repeated closure (**, ++, etc.)");
var ErrBareClosure = os.NewError("closure applies to nothing");
var ErrBadBackslash = os.NewError("illegal backslash escape");
var (
ErrInternal = os.NewError("internal error");
ErrUnmatchedLpar = os.NewError("unmatched '('");
ErrUnmatchedRpar = os.NewError("unmatched ')'");
ErrUnmatchedLbkt = os.NewError("unmatched '['");
ErrUnmatchedRbkt = os.NewError("unmatched ']'");
ErrBadRange = os.NewError("bad range in character class");
ErrExtraneousBackslash = os.NewError("extraneous backslash");
ErrBadClosure = os.NewError("repeated closure (**, ++, etc.)");
ErrBareClosure = os.NewError("closure applies to nothing");
ErrBadBackslash = os.NewError("illegal backslash escape");
)
// An instruction executed by the NFA
type instr interface {