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cmd/internal/gc: expand DBG macro in lex.go

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The dummy implementation was causing lots of argument lists
to be prepared and thrown away.

Change-Id: Id0040dec6b0937f3daa8a8d8911fa3280123e863
Reviewed-on: https://go-review.googlesource.com/5700
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
This commit is contained in:
Russ Cox 2015-02-23 17:34:49 -05:00
parent 88cbe09202
commit 6eaa095012
2 changed files with 33 additions and 13 deletions
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2
src/cmd/internal/gc/go.go
View File

@ -753,8 +753,6 @@ var namebuf string
var lexbuf bytes.Buffer
var strbuf bytes.Buffer
func DBG(...interface{}) {}
var litbuf string
var Debug [256]int

44
src/cmd/internal/gc/lex.go
View File

@ -861,7 +861,9 @@ l0:
if yy_isspace(c) {
if c == '\n' && curio.nlsemi != 0 {
ungetc(c)
DBG("lex: implicit semi\n")
if Debug['x'] != 0 {
fmt.Printf("lex: implicit semi\n")
}
return ';'
}
@ -983,7 +985,9 @@ l0:
yylval.val.U.Xval = new(Mpint)
Mpmovecfix(yylval.val.U.Xval, v)
yylval.val.Ctype = CTRUNE
DBG("lex: codepoint literal\n")
if Debug['x'] != 0 {
fmt.Printf("lex: codepoint literal\n")
}
litbuf = "string literal"
return LLITERAL
@ -1229,7 +1233,9 @@ l0:
case '{':
if loophack == 1 {
DBG("%L lex: LBODY\n", lexlineno)
if Debug['x'] != 0 {
fmt.Printf("%v lex: LBODY\n", Ctxt.Line(int(lexlineno)))
}
loophack = 0
return LBODY
}
@ -1244,9 +1250,13 @@ l0:
lx:
if c > 0xff {
DBG("%L lex: TOKEN %s\n", lexlineno, lexname(c))
if Debug['x'] != 0 {
fmt.Printf("%v lex: TOKEN %s\n", Ctxt.Line(int(lexlineno)), lexname(c))
}
} else {
DBG("%L lex: TOKEN '%c'\n", lexlineno, c)
if Debug['x'] != 0 {
fmt.Printf("%v lex: TOKEN '%c'\n", Ctxt.Line(int(lexlineno)), c)
}
}
if isfrog(c) {
Yyerror("illegal character 0x%x", uint(c))
@ -1262,7 +1272,9 @@ lx:
asop:
yylval.i = c // rathole to hold which asop
DBG("lex: TOKEN ASOP %c\n", c)
if Debug['x'] != 0 {
fmt.Printf("lex: TOKEN ASOP %c\n", c)
}
return LASOP
/*
@ -1303,7 +1315,9 @@ talph:
loophack = 1 // see comment about loophack above
}
DBG("lex: %S %s\n", s, lexname(int(s.Lexical)))
if Debug['x'] != 0 {
fmt.Printf("lex: %s %s\n", Sconv(s, 0), lexname(int(s.Lexical)))
}
yylval.sym = s
return int32(s.Lexical)
@ -1399,7 +1413,9 @@ ncu:
}
yylval.val.Ctype = CTINT
DBG("lex: integer literal\n")
if Debug['x'] != 0 {
fmt.Printf("lex: integer literal\n")
}
litbuf = "literal "
litbuf += lexbuf.String()
return LLITERAL
@ -1454,7 +1470,9 @@ casei:
}
yylval.val.Ctype = CTCPLX
DBG("lex: imaginary literal\n")
if Debug['x'] != 0 {
fmt.Printf("lex: imaginary literal\n")
}
litbuf = "literal "
litbuf += lexbuf.String()
return LLITERAL
@ -1471,7 +1489,9 @@ caseout:
}
yylval.val.Ctype = CTFLT
DBG("lex: floating literal\n")
if Debug['x'] != 0 {
fmt.Printf("lex: floating literal\n")
}
litbuf = "literal "
litbuf += lexbuf.String()
return LLITERAL
@ -1479,7 +1499,9 @@ caseout:
strlit:
yylval.val.U.Sval = &Strlit{S: cp.String()}
yylval.val.Ctype = CTSTR
DBG("lex: string literal\n")
if Debug['x'] != 0 {
fmt.Printf("lex: string literal\n")
}
litbuf = "string literal"
return LLITERAL
}