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cmd/compile: remove dead code

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Get rid of residue after removing old parser.

Change-Id: I0dace1037d50959071a082c276f9f374eef6edb2
Reviewed-on: https://go-review.googlesource.com/17179
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Robert Griesemer 2015-11-23 16:48:31 -08:00
parent 9216d3e344
commit 8f931e49f5
2 changed files with 3 additions and 83 deletions
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85
src/cmd/compile/internal/gc/lex.go
View file

@ -21,10 +21,6 @@ import (
"unicode/utf8" "unicode/utf8"
) )
var yyprev int
var yylast int
var imported_unsafe bool var imported_unsafe bool
var ( var (
@ -308,7 +304,6 @@ func Main() {
lexinit() lexinit()
typeinit() typeinit()
lexinit1() lexinit1()
// TODO(rsc): Restore yytinit?
blockgen = 1 blockgen = 1
dclcontext = PEXTERN dclcontext = PEXTERN
@ -347,7 +342,7 @@ func Main() {
imported_unsafe = false imported_unsafe = false
yyparse() parse_file()
if nsyntaxerrors != 0 { if nsyntaxerrors != 0 {
errorexit() errorexit()
} }
@ -972,7 +967,6 @@ const (
LVAR LVAR
LANDAND LANDAND
LANDNOT LANDNOT
LBODY
LCOMM LCOMM
LDEC LDEC
LEQ LEQ
@ -1898,26 +1892,8 @@ func pragcgo(text string) {
} }
} }
type yy struct{}
func (yy) Lex(v *yySymType) int {
return int(yylex(v))
}
func (yy) Error(msg string) {
Yyerror("%s", msg)
}
var parsing bool
func yyparse() {
parsing = true
parse_file()
parsing = false
}
func yylex(yylval *yySymType) int32 { func yylex(yylval *yySymType) int32 {
lx := int(_yylex(yylval)) lx := _yylex(yylval)
if curio.nlsemi && lx == EOF { if curio.nlsemi && lx == EOF {
// Treat EOF as "end of line" for the purposes // Treat EOF as "end of line" for the purposes
@ -1943,11 +1919,7 @@ func yylex(yylval *yySymType) int32 {
curio.nlsemi = false curio.nlsemi = false
} }
// Track last two tokens returned by yylex. return lx
yyprev = yylast
yylast = lx
return int32(lx)
} }
func getc() int { func getc() int {
@ -2533,57 +2505,6 @@ func lexname(lex int) string {
return fmt.Sprintf("LEX-%d", lex) return fmt.Sprintf("LEX-%d", lex)
} }
var yytfix = map[string]string{
"$end": "EOF",
"LASOP": "op=",
"LBREAK": "break",
"LCASE": "case",
"LCHAN": "chan",
"LCOLAS": ":=",
"LCONST": "const",
"LCONTINUE": "continue",
"LDDD": "...",
"LDEFAULT": "default",
"LDEFER": "defer",
"LELSE": "else",
"LFALL": "fallthrough",
"LFOR": "for",
"LFUNC": "func",
"LGO": "go",
"LGOTO": "goto",
"LIF": "if",
"LIMPORT": "import",
"LINTERFACE": "interface",
"LMAP": "map",
"LNAME": "name",
"LPACKAGE": "package",
"LRANGE": "range",
"LRETURN": "return",
"LSELECT": "select",
"LSTRUCT": "struct",
"LSWITCH": "switch",
"LTYPE": "type",
"LVAR": "var",
"LANDAND": "&&",
"LANDNOT": "&^",
"LBODY": "{",
"LCOMM": "<-",
"LDEC": "--",
"LINC": "++",
"LEQ": "==",
"LGE": ">=",
"LGT": ">",
"LLE": "<=",
"LLT": "<",
"LLSH": "<<",
"LRSH": ">>",
"LOROR": "||",
"LNE": "!=",
// spell out to avoid confusion with punctuation in error messages
"';'": "semicolon or newline",
"','": "comma",
}
func pkgnotused(lineno int, path string, name string) { func pkgnotused(lineno int, path string, name string) {
// If the package was imported with a name other than the final // If the package was imported with a name other than the final
// import path element, show it explicitly in the error message. // import path element, show it explicitly in the error message.

1
src/cmd/compile/internal/gc/parser.go
View file

@ -261,7 +261,6 @@ var tokstrings = map[int32]string{
LVAR: "var", LVAR: "var",
LANDAND: "&&", LANDAND: "&&",
LANDNOT: "&^", LANDNOT: "&^",
LBODY: "LBODY", // we should never see this one
LCOMM: "<-", LCOMM: "<-",
LDEC: "--", LDEC: "--",
LEQ: "==", LEQ: "==",