// mergeWriteBytes merges adjacent opWB operations into a single WB
func (p *program) mergeWriteBytes() {
removedReferences := make(map[valType]struct{})
for name, code := range p.code {
wb := -1
ii := 0
checkWBMerge := func() {
if wb >= 0 {
// We had a WB sequence, check its length
// and merge it if appropriate
count := ii - wb
if count > 1 {
var buf bytes.Buffer
var refs []valType
for c := wb; c < ii; c++ {
wbInst := code[c]
removedReferences[wbInst.val] = struct{}{}
refs = append(refs, wbInst.val)
buf.Write(p.bytesValue(wbInst.val))
}
repl := []inst{
inst{op: opWB, val: p.internBytes(buf.Bytes())},
}
code = instructions(code).replace(wb, count, repl)
compilerDebugf("merged %d WB instructions with byte slice refs %v at PC %d (new ref %d)\n",
count, refs, wb, repl[0].val)
}
}
}
for ; ii < len(code); ii++ {
v := code[ii]
if v.op == opWB {
if wb < 0 {
wb = ii
}
} else {
checkWBMerge()
wb = -1
}
}
checkWBMerge()
p.code[name] = code
}
// Sort references from higher to lower, so we
// don't invalidate them while they're being removed
sortedReferences := make([]valType, 0, len(removedReferences))
for r := range removedReferences {
sortedReferences = append(sortedReferences, r)
}
generic.SortFunc(sortedReferences, func(a, b valType) bool {
return a > b
})
compilerDebugln("candidates for byte slice removal", sortedReferences)
for _, r := range sortedReferences {
if !p.referencesBytes(r) {
compilerDebugln("will remove byte slice reference", r)
p.removeInternedBytes(r)
}
}
}
func sortArticles(articles []*article.Article) {
generic.SortFunc(articles, func(a1, a2 *article.Article) bool {
if a1.Priority < a2.Priority {
return true
}
if a1.Created().Sub(a2.Created()) > 0 {
return true
}
return a1.Title() < a2.Title()
})
}
func (d *appData) enabledSocialAccountTypes() []*socialAccountType {
if d.socialAccountTypes == nil {
st := make([]*socialAccountType, 0)
if d.opts.FacebookApp != nil {
st = append(st, socialAccountTypes[SocialAccountTypeFacebook])
}
if d.opts.TwitterApp != nil {
st = append(st, socialAccountTypes[SocialAccountTypeTwitter])
}
if d.opts.GoogleApp != nil {
st = append(st, socialAccountTypes[SocialAccountTypeGoogle])
}
if d.opts.GithubApp != nil {
st = append(st, socialAccountTypes[SocialAccountTypeGithub])
}
positions := make(map[SocialAccountType]int)
for k := range socialAccountTypes {
positions[k] = -1
}
for ii, k := range d.opts.SocialAccountsOrder {
positions[k] = ii
}
generic.SortFunc(st, func(s1, s2 *socialAccountType) bool {
p1, p2 := positions[s1.Name], positions[s2.Name]
if p1 == -1 {
return false
}
if p2 == -1 {
return true
}
return p1 < p2
})
d.socialAccountTypes = st
}
return d.socialAccountTypes
}