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[dev.inline] cmd/compile: reorganize file parsing logic

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Preparation for concurrent parsing. No behavior change.

Change-Id: Ic1ec45fc3cb316778c29065cf055c82e92ffa874
Reviewed-on: https://go-review.googlesource.com/35125
Reviewed-by: Robert Griesemer <gri@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Matthew Dempsky 2017-01-11 15:31:48 -08:00
parent e48919bcde
commit b90aed020d
2 changed files with 22 additions and 16 deletions
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11
src/cmd/compile/internal/gc/main.go
View File

@ -325,16 +325,7 @@ func Main() {
loadsys()
timings.Start("fe", "parse")
var lines uint
for _, infile := range flag.Args() {
block = 1
iota_ = -1000000
imported_unsafe = false
lines += parseFile(infile)
if nsyntaxerrors != 0 {
errorexit()
}
}
lines := parseFiles(flag.Args())
timings.Stop()
timings.AddEvent(int64(lines), "lines")

27
src/cmd/compile/internal/gc/noder.go
View File

@ -16,6 +16,17 @@ import (
"cmd/internal/src"
)
func parseFiles(filenames []string) uint {
var lines uint
for _, filename := range filenames {
lines += parseFile(filename)
if nsyntaxerrors != 0 {
errorexit()
}
}
return lines
}
func parseFile(filename string) uint {
f, err := os.Open(filename)
if err != nil {
@ -30,12 +41,6 @@ func parseFile(filename string) uint {
p.file(file)
if !imported_unsafe {
for _, pos := range p.linknames {
p.error(syntax.Error{Pos: pos, Msg: "//go:linkname only allowed in Go files that import \"unsafe\""})
}
}
if nsyntaxerrors == 0 {
testdclstack()
}
@ -55,11 +60,21 @@ type noder struct {
}
func (p *noder) file(file *syntax.File) {
block = 1
iota_ = -1000000
imported_unsafe = false
p.lineno(file.PkgName)
mkpackage(file.PkgName.Value)
xtop = append(xtop, p.decls(file.DeclList)...)
if !imported_unsafe {
for _, pos := range p.linknames {
p.error(syntax.Error{Pos: pos, Msg: "//go:linkname only allowed in Go files that import \"unsafe\""})
}
}
// For compatibility with old code only (comparisons w/ toolstash):
// The old line number tracking simply continued incrementing the
// virtual line number (lexlineno) and using it also for lineno.