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Maintain ordering between variants and aliases

Browse source 
AddFarVariationDependencies takes the first matching variant.  To
maintain sensible behavior on a module with aliases, the ordering
of aliases and module variants needs to be maintained so that
AddFarVariationDependencies can find an earlier matching alias
instead of a more specific variant.

Test: go test .
Change-Id: I78f4e96edd98159f3a62d94e240e5d652667bec4
This commit is contained in:
Colin Cross 2020-08-24 16:18:21 -07:00
parent 39644c0903
commit 5df74a8e38
7 changed files with 299 additions and 253 deletions
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217
context.go
View file

@ -163,16 +163,65 @@ type moduleAlias struct {
target *moduleInfo
}
func (m *moduleAlias) alias() *moduleAlias { return m }
func (m *moduleAlias) module() *moduleInfo { return nil }
func (m *moduleAlias) moduleOrAliasTarget() *moduleInfo { return m.target }
func (m *moduleAlias) moduleOrAliasVariant() variant { return m.variant }
func (m *moduleInfo) alias() *moduleAlias { return nil }
func (m *moduleInfo) module() *moduleInfo { return m }
func (m *moduleInfo) moduleOrAliasTarget() *moduleInfo { return m }
func (m *moduleInfo) moduleOrAliasVariant() variant { return m.variant }
type moduleOrAlias interface {
alias() *moduleAlias
module() *moduleInfo
moduleOrAliasTarget() *moduleInfo
moduleOrAliasVariant() variant
}
type modulesOrAliases []moduleOrAlias
func (l modulesOrAliases) firstModule() *moduleInfo {
for _, moduleOrAlias := range l {
if m := moduleOrAlias.module(); m != nil {
return m
}
}
panic(fmt.Errorf("no first module!"))
}
func (l modulesOrAliases) lastModule() *moduleInfo {
for i := range l {
if m := l[len(l)-1-i].module(); m != nil {
return m
}
}
panic(fmt.Errorf("no last module!"))
}
type moduleGroup struct {
name string
ninjaName string
modules []*moduleInfo
aliases []*moduleAlias
modules modulesOrAliases
namespace Namespace
}
func (group *moduleGroup) moduleOrAliasByVariantName(name string) moduleOrAlias {
for _, module := range group.modules {
if module.moduleOrAliasVariant().name == name {
return module
}
}
return nil
}
func (group *moduleGroup) moduleByVariantName(name string) *moduleInfo {
return group.moduleOrAliasByVariantName(name).module()
}
type moduleInfo struct {
// set during Parse
typeName string
@ -201,8 +250,7 @@ type moduleInfo struct {
waitingCount int
// set during each runMutator
splitModules []*moduleInfo
pendingAliases []pendingAlias
splitModules modulesOrAliases
// set during PrepareBuildActions
actionDefs localBuildActions
@ -1256,14 +1304,14 @@ func newVariant(module *moduleInfo, mutatorName string, variationName string,
}
func (c *Context) createVariations(origModule *moduleInfo, mutatorName string,
defaultVariationName *string, variationNames []string, local bool) ([]*moduleInfo, []error) {
defaultVariationName *string, variationNames []string, local bool) (modulesOrAliases, []error) {
if len(variationNames) == 0 {
panic(fmt.Errorf("mutator %q passed zero-length variation list for module %q",
mutatorName, origModule.Name()))
}
newModules := []*moduleInfo{}
var newModules modulesOrAliases
var errs []error
@ -1312,37 +1360,19 @@ func (c *Context) convertDepsToVariation(module *moduleInfo,
if dep.module.logicModule == nil {
var newDep *moduleInfo
for _, m := range dep.module.splitModules {
if m.variant.variations[mutatorName] == variationName {
newDep = m
if m.moduleOrAliasVariant().variations[mutatorName] == variationName {
newDep = m.moduleOrAliasTarget()
break
}
}
if newDep == nil {
// check aliases against variationNam
for _, a := range dep.module.pendingAliases {
if a.fromVariant.variations[mutatorName] == variationName {
newDep = a.target
break
}
}
}
if newDep == nil && defaultVariationName != nil {
// give it a second chance; match with defaultVariationName
for _, m := range dep.module.splitModules {
if m.variant.variations[mutatorName] == *defaultVariationName {
newDep = m
if m.moduleOrAliasVariant().variations[mutatorName] == *defaultVariationName {
newDep = m.moduleOrAliasTarget()
break
}
}
if newDep == nil {
// check aliases against defaultVariationName
for _, a := range dep.module.pendingAliases {
if a.fromVariant.variations[mutatorName] == *defaultVariationName {
newDep = a.target
break
}
}
}
}
if newDep == nil {
errs = append(errs, &BlueprintError{
@ -1372,14 +1402,14 @@ func (c *Context) prettyPrintVariant(variations variationMap) string {
func (c *Context) prettyPrintGroupVariants(group *moduleGroup) string {
var variants []string
for _, mod := range group.modules {
for _, moduleOrAlias := range group.modules {
if mod := moduleOrAlias.module(); mod != nil {
variants = append(variants, c.prettyPrintVariant(mod.variant.variations))
} else if alias := moduleOrAlias.alias(); alias != nil {
variants = append(variants, c.prettyPrintVariant(alias.variant.variations)+
"(alias to "+c.prettyPrintVariant(alias.target.variant.variations)+")")
}
for _, mod := range group.aliases {
variants = append(variants, c.prettyPrintVariant(mod.variant.variations)+
"(alias to "+c.prettyPrintVariant(mod.target.variant.variations)+")")
}
sort.Strings(variants)
return strings.Join(variants, "\n ")
}
@ -1458,7 +1488,7 @@ func (c *Context) addModule(module *moduleInfo) []error {
group := &moduleGroup{
name: name,
modules: []*moduleInfo{module},
modules: modulesOrAliases{module},
}
module.group = group
namespace, errs := c.nameInterface.NewModule(
@ -1546,14 +1576,19 @@ func blueprintDepsMutator(ctx BottomUpMutatorContext) {
// and returns the matching module, or nil if one is not found. A group with exactly one module
// is always considered matching.
func findExactVariantOrSingle(module *moduleInfo, possible *moduleGroup, reverse bool) *moduleInfo {
if len(possible.modules) == 1 {
return possible.modules[0]
} else {
found, _ := findVariant(module, possible, nil, false, reverse)
return found
}
if found == nil {
for _, moduleOrAlias := range possible.modules {
if m := moduleOrAlias.module(); m != nil {
if found != nil {
// more than one possible match, give up
return nil
}
found = m
}
}
}
return found
}
func (c *Context) addDependency(module *moduleInfo, tag DependencyTag, depName string) []error {
@ -1660,21 +1695,12 @@ func findVariant(module *moduleInfo, possibleDeps *moduleGroup, variations []Var
var foundDep *moduleInfo
for _, m := range possibleDeps.modules {
if check(m.variant.variations) {
foundDep = m
if check(m.moduleOrAliasVariant().variations) {
foundDep = m.moduleOrAliasTarget()
break
}
}
if foundDep == nil {
for _, m := range possibleDeps.aliases {
if check(m.variant.variations) {
foundDep = m.target
break
}
}
}
return foundDep, newVariant
}
@ -1689,7 +1715,7 @@ func (c *Context) addVariationDependency(module *moduleInfo, variations []Variat
return c.discoveredMissingDependencies(module, depName)
}
foundDep, newVariant := c.findVariant(module, possibleDeps, variations, far, false)
foundDep, newVariant := findVariant(module, possibleDeps, variations, far, false)
if foundDep == nil {
if c.allowMissingDependencies {
@ -1732,7 +1758,8 @@ func (c *Context) addInterVariantDependency(origModule *moduleInfo, tag Dependen
}
var fromInfo, toInfo *moduleInfo
for _, m := range origModule.splitModules {
for _, moduleOrAlias := range origModule.splitModules {
if m := moduleOrAlias.module(); m != nil {
if m.logicModule == from {
fromInfo = m
}
@ -1743,6 +1770,7 @@ func (c *Context) addInterVariantDependency(origModule *moduleInfo, tag Dependen
}
}
}
}
if fromInfo == nil || toInfo == nil {
panic(fmt.Errorf("AddInterVariantDependency called for module %q on invalid variant",
@ -1971,7 +1999,9 @@ func (c *Context) updateDependencies() (errs []error) {
if dep == module {
break
}
deps[dep] = true
if depModule := dep.module(); depModule != nil {
deps[depModule] = true
}
}
for _, dep := range module.directDeps {
@ -2213,7 +2243,7 @@ func (c *Context) runMutator(config interface{}, mutator *mutatorInfo,
errsCh := make(chan []error)
globalStateCh := make(chan globalStateChange)
newVariationsCh := make(chan []*moduleInfo)
newVariationsCh := make(chan modulesOrAliases)
done := make(chan bool)
c.depsModified = 0
@ -2223,8 +2253,6 @@ func (c *Context) runMutator(config interface{}, mutator *mutatorInfo,
panic("split module found in sorted module list")
}
module.pendingAliases = nil
mctx := &mutatorContext{
baseModuleContext: baseModuleContext{
context: c,
@ -2286,9 +2314,11 @@ func (c *Context) runMutator(config interface{}, mutator *mutatorInfo,
newModules = append(newModules, globalStateChange.newModules...)
deps = append(deps, globalStateChange.deps...)
case newVariations := <-newVariationsCh:
for _, m := range newVariations {
for _, moduleOrAlias := range newVariations {
if m := moduleOrAlias.module(); m != nil {
newModuleInfo[m.logicModule] = m
}
}
case <-done:
return
}
@ -2311,31 +2341,27 @@ func (c *Context) runMutator(config interface{}, mutator *mutatorInfo,
for _, group := range c.moduleGroups {
for i := 0; i < len(group.modules); i++ {
module := group.modules[i]
module := group.modules[i].module()
if module == nil {
// Existing alias, skip it
continue
}
// Update module group to contain newly split variants
if module.splitModules != nil {
group.modules, i = spliceModules(group.modules, i, module.splitModules)
}
// Create any new aliases.
for _, alias := range module.pendingAliases {
group.aliases = append(group.aliases, &moduleAlias{
variant: alias.fromVariant,
target: alias.target,
})
}
// Fix up any remaining dependencies on modules that were split into variants
// by replacing them with the first variant
for j, dep := range module.directDeps {
if dep.module.logicModule == nil {
module.directDeps[j].module = dep.module.splitModules[0]
module.directDeps[j].module = dep.module.splitModules.firstModule()
}
}
if module.createdBy != nil && module.createdBy.logicModule == nil {
module.createdBy = module.createdBy.splitModules[0]
module.createdBy = module.createdBy.splitModules.firstModule()
}
// Add in any new direct dependencies that were added by the mutator
@ -2344,30 +2370,34 @@ func (c *Context) runMutator(config interface{}, mutator *mutatorInfo,
}
findAliasTarget := func(variant variant) *moduleInfo {
for _, alias := range group.aliases {
for _, moduleOrAlias := range group.modules {
if alias := moduleOrAlias.alias(); alias != nil {
if alias.variant.variations.equal(variant.variations) {
return alias.target
}
}
}
return nil
}
// Forward or delete any dangling aliases.
for i := 0; i < len(group.aliases); i++ {
alias := group.aliases[i]
// Use a manual loop instead of range because len(group.modules) can
// change inside the loop
for i := 0; i < len(group.modules); i++ {
if alias := group.modules[i].alias(); alias != nil {
if alias.target.logicModule == nil {
newTarget := findAliasTarget(alias.target.variant)
if newTarget != nil {
alias.target = newTarget
} else {
// The alias was left dangling, remove it.
group.aliases = append(group.aliases[:i], group.aliases[i+1:]...)
group.modules = append(group.modules[:i], group.modules[i+1:]...)
i--
}
}
}
}
}
// Add in any new reverse dependencies that were added by the mutator
for module, deps := range reverseDeps {
@ -2438,15 +2468,15 @@ func (c *Context) cloneModules() {
// Removes modules[i] from the list and inserts newModules... where it was located, returning
// the new slice and the index of the last inserted element
func spliceModules(modules []*moduleInfo, i int, newModules []*moduleInfo) ([]*moduleInfo, int) {
func spliceModules(modules modulesOrAliases, i int, newModules modulesOrAliases) (modulesOrAliases, int) {
spliceSize := len(newModules)
newLen := len(modules) + spliceSize - 1
var dest []*moduleInfo
var dest modulesOrAliases
if cap(modules) >= len(modules)-1+len(newModules) {
// We can fit the splice in the existing capacity, do everything in place
dest = modules[:newLen]
} else {
dest = make([]*moduleInfo, newLen)
dest = make(modulesOrAliases, newLen)
copy(dest, modules[:i])
}
@ -2703,14 +2733,8 @@ func (c *Context) moduleMatchingVariant(module *moduleInfo, name string) *module
}
for _, m := range group.modules {
if module.variant.name == m.variant.name {
return m
}
}
for _, m := range group.aliases {
if module.variant.name == m.variant.name {
return m.target
if module.variant.variations.equal(m.moduleOrAliasVariant().variations) {
return m.moduleOrAliasTarget()
}
}
@ -2807,10 +2831,12 @@ func (c *Context) visitAllModules(visit func(Module)) {
}()
for _, moduleGroup := range c.sortedModuleGroups() {
for _, module = range moduleGroup.modules {
for _, moduleOrAlias := range moduleGroup.modules {
if module = moduleOrAlias.module(); module != nil {
visit(module.logicModule)
}
}
}
}
func (c *Context) visitAllModulesIf(pred func(Module) bool,
@ -2826,12 +2852,14 @@ func (c *Context) visitAllModulesIf(pred func(Module) bool,
}()
for _, moduleGroup := range c.sortedModuleGroups() {
for _, module := range moduleGroup.modules {
for _, moduleOrAlias := range moduleGroup.modules {
if module = moduleOrAlias.module(); module != nil {
if pred(module.logicModule) {
visit(module.logicModule)
}
}
}
}
}
func (c *Context) visitAllModuleVariants(module *moduleInfo,
@ -2846,9 +2874,11 @@ func (c *Context) visitAllModuleVariants(module *moduleInfo,
}
}()
for _, variant = range module.group.modules {
for _, moduleOrAlias := range module.group.modules {
if variant = moduleOrAlias.module(); variant != nil {
visit(variant.logicModule)
}
}
}
func (c *Context) requireNinjaVersion(major, minor, micro int) {
@ -3191,12 +3221,11 @@ func (c *Context) VisitDepsDepthFirstIf(module Module, pred func(Module) bool, v
}
func (c *Context) PrimaryModule(module Module) Module {
return c.moduleInfo[module].group.modules[0].logicModule
return c.moduleInfo[module].group.modules.firstModule().logicModule
}
func (c *Context) FinalModule(module Module) Module {
modules := c.moduleInfo[module].group.modules
return modules[len(modules)-1].logicModule
return c.moduleInfo[module].group.modules.lastModule().logicModule
}
func (c *Context) VisitAllModuleVariants(module Module,
@ -3756,15 +3785,15 @@ func (c *Context) writeLocalBuildActions(nw *ninjaWriter,
return nil
}
func beforeInModuleList(a, b *moduleInfo, list []*moduleInfo) bool {
func beforeInModuleList(a, b *moduleInfo, list modulesOrAliases) bool {
found := false
if a == b {
return false
}
for _, l := range list {
if l == a {
if l.module() == a {
found = true
} else if l == b {
} else if l.module() == b {
return found
}
}

121
context_test.go
View file

@ -238,7 +238,7 @@ func TestWalkDeps(t *testing.T) {
t.FailNow()
}
topModule := ctx.moduleGroupFromName("A", nil).modules[0]
topModule := ctx.moduleGroupFromName("A", nil).modules.firstModule()
outputDown, outputUp := walkDependencyGraph(ctx, topModule, false)
if outputDown != "BCEFG" {
t.Errorf("unexpected walkDeps behaviour: %s\ndown should be: BCEFG", outputDown)
@ -319,7 +319,7 @@ func TestWalkDepsDuplicates(t *testing.T) {
t.FailNow()
}
topModule := ctx.moduleGroupFromName("A", nil).modules[0]
topModule := ctx.moduleGroupFromName("A", nil).modules.firstModule()
outputDown, outputUp := walkDependencyGraph(ctx, topModule, true)
if outputDown != "BCEGHFGG" {
t.Errorf("unexpected walkDeps behaviour: %s\ndown should be: BCEGHFGG", outputDown)
@ -386,7 +386,7 @@ func TestWalkDepsDuplicates_IgnoreFirstPath(t *testing.T) {
t.FailNow()
}
topModule := ctx.moduleGroupFromName("A", nil).modules[0]
topModule := ctx.moduleGroupFromName("A", nil).modules.firstModule()
outputDown, outputUp := walkDependencyGraph(ctx, topModule, true)
expectedDown := "BDCDE"
if outputDown != expectedDown {
@ -432,10 +432,10 @@ func TestCreateModule(t *testing.T) {
t.FailNow()
}
a := ctx.moduleGroupFromName("A", nil).modules[0].logicModule.(*fooModule)
b := ctx.moduleGroupFromName("B", nil).modules[0].logicModule.(*barModule)
c := ctx.moduleGroupFromName("C", nil).modules[0].logicModule.(*barModule)
d := ctx.moduleGroupFromName("D", nil).modules[0].logicModule.(*fooModule)
a := ctx.moduleGroupFromName("A", nil).modules.firstModule().logicModule.(*fooModule)
b := ctx.moduleGroupFromName("B", nil).modules.firstModule().logicModule.(*barModule)
c := ctx.moduleGroupFromName("C", nil).modules.firstModule().logicModule.(*barModule)
d := ctx.moduleGroupFromName("D", nil).modules.firstModule().logicModule.(*fooModule)
checkDeps := func(m Module, expected string) {
var deps []string
@ -622,28 +622,42 @@ func Test_findVariant(t *testing.T) {
}
type alias struct {
variations variationMap
variant variant
target int
}
makeDependencyGroup := func(modules []*moduleInfo, aliases []alias) *moduleGroup {
makeDependencyGroup := func(in ...interface{}) *moduleGroup {
group := &moduleGroup{
name: "dep",
modules: modules,
}
for _, alias := range aliases {
group.aliases = append(group.aliases, &moduleAlias{
variant: variant{
variations: alias.variations,
},
target: group.modules[alias.target],
})
}
for _, m := range group.modules {
for _, x := range in {
switch m := x.(type) {
case *moduleInfo:
m.group = group
group.modules = append(group.modules, m)
case alias:
// aliases may need to target modules that haven't been processed
// yet, put an empty alias in for now.
group.modules = append(group.modules, nil)
default:
t.Fatalf("unexpected type %T", x)
}
}
for i, x := range in {
switch m := x.(type) {
case *moduleInfo:
// already added in the first pass
case alias:
group.modules[i] = &moduleAlias{
variant: m.variant,
target: group.modules[m.target].moduleOrAliasTarget(),
}
default:
t.Fatalf("unexpected type %T", x)
}
}
return group
}
@ -658,8 +672,8 @@ func Test_findVariant(t *testing.T) {
{
name: "AddVariationDependencies(nil)",
// A dependency that matches the non-local variations of the module
possibleDeps: makeDependencyGroup([]*moduleInfo{
{
possibleDeps: makeDependencyGroup(
&moduleInfo{
variant: variant{
name: "normal",
variations: variationMap{
@ -667,7 +681,7 @@ func Test_findVariant(t *testing.T) {
},
},
},
}, nil),
),
variations: nil,
far: false,
reverse: false,
@ -676,8 +690,17 @@ func Test_findVariant(t *testing.T) {
{
name: "AddVariationDependencies(nil) to alias",
// A dependency with an alias that matches the non-local variations of the module
possibleDeps: makeDependencyGroup([]*moduleInfo{
{
possibleDeps: makeDependencyGroup(
alias{
variant: variant{
name: "normal",
variations: variationMap{
"normal": "normal",
},
},
target: 1,
},
&moduleInfo{
variant: variant{
name: "normal_a",
variations: variationMap{
@ -686,14 +709,7 @@ func Test_findVariant(t *testing.T) {
},
},
},
}, []alias{
{
variations: variationMap{
"normal": "normal",
},
target: 0,
},
}),
),
variations: nil,
far: false,
reverse: false,
@ -702,8 +718,8 @@ func Test_findVariant(t *testing.T) {
{
name: "AddVariationDependencies(a)",
// A dependency with local variations
possibleDeps: makeDependencyGroup([]*moduleInfo{
{
possibleDeps: makeDependencyGroup(
&moduleInfo{
variant: variant{
name: "normal_a",
variations: variationMap{
@ -712,7 +728,7 @@ func Test_findVariant(t *testing.T) {
},
},
},
}, nil),
),
variations: []Variation{{"a", "a"}},
far: false,
reverse: false,
@ -721,8 +737,8 @@ func Test_findVariant(t *testing.T) {
{
name: "AddFarVariationDependencies(far)",
// A dependency with far variations
possibleDeps: makeDependencyGroup([]*moduleInfo{
{
possibleDeps: makeDependencyGroup(
&moduleInfo{
variant: variant{
name: "far",
variations: variationMap{
@ -730,7 +746,7 @@ func Test_findVariant(t *testing.T) {
},
},
},
}, nil),
),
variations: []Variation{{"far", "far"}},
far: true,
reverse: false,
@ -739,8 +755,17 @@ func Test_findVariant(t *testing.T) {
{
name: "AddFarVariationDependencies(far) to alias",
// A dependency with far variations and aliases
possibleDeps: makeDependencyGroup([]*moduleInfo{
{
possibleDeps: makeDependencyGroup(
alias{
variant: variant{
name: "far",
variations: variationMap{
"far": "far",
},
},
target: 2,
},
&moduleInfo{
variant: variant{
name: "far_a",
variations: variationMap{
@ -749,18 +774,20 @@ func Test_findVariant(t *testing.T) {
},
},
},
}, []alias{
{
&moduleInfo{
variant: variant{
name: "far_b",
variations: variationMap{
"far": "far",
"b": "b",
},
target: 0,
},
}),
},
),
variations: []Variation{{"far", "far"}},
far: true,
reverse: false,
want: "far_a",
want: "far_b",
},
}
for _, tt := range tests {

48
module_ctx.go
View file

@ -643,11 +643,11 @@ func (m *baseModuleContext) WalkDeps(visit func(child, parent Module) bool) {
}
func (m *baseModuleContext) PrimaryModule() Module {
return m.module.group.modules[0].logicModule
return m.module.group.modules.firstModule().logicModule
}
func (m *baseModuleContext) FinalModule() Module {
return m.module.group.modules[len(m.module.group.modules)-1].logicModule
return m.module.group.modules.lastModule().logicModule
}
func (m *baseModuleContext) VisitAllModuleVariants(visit func(Module)) {
@ -722,7 +722,7 @@ type mutatorContext struct {
reverseDeps []reverseDep
rename []rename
replace []replace
newVariations []*moduleInfo // new variants of existing modules
newVariations modulesOrAliases // new variants of existing modules
newModules []*moduleInfo // brand new modules
defaultVariation *string
}
@ -921,7 +921,7 @@ func (mctx *mutatorContext) createVariations(variationNames []string, local bool
}
for _, module := range modules {
ret = append(ret, module.logicModule)
ret = append(ret, module.module().logicModule)
}
if mctx.newVariations != nil {
@ -937,25 +937,30 @@ func (mctx *mutatorContext) createVariations(variationNames []string, local bool
}
func (mctx *mutatorContext) AliasVariation(variationName string) {
for _, alias := range mctx.module.pendingAliases {
if alias.fromVariant.variations.equal(mctx.module.variant.variations) {
for _, moduleOrAlias := range mctx.module.splitModules {
if alias := moduleOrAlias.alias(); alias != nil {
if alias.variant.variations.equal(mctx.module.variant.variations) {
panic(fmt.Errorf("AliasVariation already called"))
}
}
}
for _, variant := range mctx.newVariations {
if variant.variant.variations[mctx.name] == variationName {
mctx.module.pendingAliases = append(mctx.module.pendingAliases, pendingAlias{
fromVariant: mctx.module.variant,
target: variant,
})
if variant.moduleOrAliasVariant().variations[mctx.name] == variationName {
alias := &moduleAlias{
variant: mctx.module.variant,
target: variant.moduleOrAliasTarget(),
}
// Prepend the alias so that AddFarVariationDependencies subset match matches
// the alias before matching the first variation.
mctx.module.splitModules = append(modulesOrAliases{alias}, mctx.module.splitModules...)
return
}
}
var foundVariations []string
for _, variant := range mctx.newVariations {
foundVariations = append(foundVariations, variant.variant.variations[mctx.name])
foundVariations = append(foundVariations, variant.moduleOrAliasVariant().variations[mctx.name])
}
panic(fmt.Errorf("no %q variation in module variations %q", variationName, foundVariations))
}
@ -963,17 +968,22 @@ func (mctx *mutatorContext) AliasVariation(variationName string) {
func (mctx *mutatorContext) CreateAliasVariation(aliasVariationName, targetVariationName string) {
newVariant := newVariant(mctx.module, mctx.name, aliasVariationName, false)
for _, alias := range mctx.module.pendingAliases {
if alias.fromVariant.variations.equal(newVariant.variations) {
for _, moduleOrAlias := range mctx.module.splitModules {
if moduleOrAlias.moduleOrAliasVariant().variations.equal(newVariant.variations) {
if alias := moduleOrAlias.alias(); alias != nil {
panic(fmt.Errorf("can't alias %q to %q, already aliased to %q", aliasVariationName, targetVariationName, alias.target.variant.name))
} else {
panic(fmt.Errorf("can't alias %q to %q, there is already a variant with that name", aliasVariationName, targetVariationName))
}
}
}
for _, variant := range mctx.newVariations {
if variant.variant.variations[mctx.name] == targetVariationName {
mctx.module.pendingAliases = append(mctx.module.pendingAliases, pendingAlias{
fromVariant: newVariant,
target: variant,
if variant.moduleOrAliasVariant().variations[mctx.name] == targetVariationName {
// Append the alias here so that it comes after any aliases created by AliasVariation.
mctx.module.splitModules = append(mctx.module.splitModules, &moduleAlias{
variant: newVariant,
target: variant.moduleOrAliasTarget(),
})
return
}
@ -981,7 +991,7 @@ func (mctx *mutatorContext) CreateAliasVariation(aliasVariationName, targetVaria
var foundVariations []string
for _, variant := range mctx.newVariations {
foundVariations = append(foundVariations, variant.variant.variations[mctx.name])
foundVariations = append(foundVariations, variant.moduleOrAliasVariant().variations[mctx.name])
}
panic(fmt.Errorf("no %q variation in module variations %q", targetVariationName, foundVariations))
}

40
module_ctx_test.go
View file

@ -131,12 +131,8 @@ func TestAliasVariation(t *testing.T) {
run(ctx)
foo := ctx.moduleGroupFromName("foo", nil).modules[0]
barB := ctx.moduleGroupFromName("bar", nil).modules[1]
if g, w := barB.variant.name, "b"; g != w {
t.Fatalf("expected bar.modules[1] variant to be %q, got %q", w, g)
}
foo := ctx.moduleGroupFromName("foo", nil).moduleByVariantName("")
barB := ctx.moduleGroupFromName("bar", nil).moduleByVariantName("b")
if g, w := foo.forwardDeps, []*moduleInfo{barB}; !reflect.DeepEqual(g, w) {
t.Fatalf("expected foo deps to be %q, got %q", w, g)
@ -155,12 +151,8 @@ func TestAliasVariation(t *testing.T) {
run(ctx)
foo := ctx.moduleGroupFromName("foo", nil).modules[0]
barBB := ctx.moduleGroupFromName("bar", nil).modules[3]
if g, w := barBB.variant.name, "b_b"; g != w {
t.Fatalf("expected bar.modules[3] variant to be %q, got %q", w, g)
}
foo := ctx.moduleGroupFromName("foo", nil).moduleByVariantName("")
barBB := ctx.moduleGroupFromName("bar", nil).moduleByVariantName("b_b")
if g, w := foo.forwardDeps, []*moduleInfo{barBB}; !reflect.DeepEqual(g, w) {
t.Fatalf("expected foo deps to be %q, got %q", w, g)
@ -179,12 +171,8 @@ func TestAliasVariation(t *testing.T) {
run(ctx)
foo := ctx.moduleGroupFromName("foo", nil).modules[0]
barAB := ctx.moduleGroupFromName("bar", nil).modules[1]
if g, w := barAB.variant.name, "a_b"; g != w {
t.Fatalf("expected bar.modules[1] variant to be %q, got %q", w, g)
}
foo := ctx.moduleGroupFromName("foo", nil).moduleByVariantName("")
barAB := ctx.moduleGroupFromName("bar", nil).moduleByVariantName("a_b")
if g, w := foo.forwardDeps, []*moduleInfo{barAB}; !reflect.DeepEqual(g, w) {
t.Fatalf("expected foo deps to be %q, got %q", w, g)
@ -270,12 +258,8 @@ func TestCreateAliasVariations(t *testing.T) {
run(ctx)
foo := ctx.moduleGroupFromName("foo", nil).modules[0]
barB := ctx.moduleGroupFromName("bar", nil).modules[1]
if g, w := barB.variant.name, "b"; g != w {
t.Fatalf("expected bar.modules[1] variant to be %q, got %q", w, g)
}
foo := ctx.moduleGroupFromName("foo", nil).moduleByVariantName("")
barB := ctx.moduleGroupFromName("bar", nil).moduleByVariantName("b")
if g, w := foo.forwardDeps, []*moduleInfo{barB}; !reflect.DeepEqual(g, w) {
t.Fatalf("expected foo deps to be %q, got %q", w, g)
@ -294,12 +278,8 @@ func TestCreateAliasVariations(t *testing.T) {
run(ctx)
foo := ctx.moduleGroupFromName("foo", nil).modules[0]
barBB := ctx.moduleGroupFromName("bar", nil).modules[3]
if g, w := barBB.variant.name, "b_b"; g != w {
t.Fatalf("expected bar.modules[3] variant to be %q, got %q", w, g)
}
foo := ctx.moduleGroupFromName("foo", nil).moduleByVariantName("")
barBB := ctx.moduleGroupFromName("bar", nil).moduleByVariantName("b_b")
if g, w := foo.forwardDeps, []*moduleInfo{barBB}; !reflect.DeepEqual(g, w) {
t.Fatalf("expected foo deps to be %q, got %q", w, g)

4
name_interface.go
View file

@ -109,7 +109,7 @@ func (s *SimpleNameInterface) NewModule(ctx NamespaceContext, group ModuleGroup,
return nil, []error{
// seven characters at the start of the second line to align with the string "error: "
fmt.Errorf("module %q already defined\n"+
" %s <-- previous definition here", name, group.modules[0].pos),
" %s <-- previous definition here", name, group.modules.firstModule().pos),
}
}
@ -130,7 +130,7 @@ func (s *SimpleNameInterface) Rename(oldName string, newName string, namespace N
// seven characters at the start of the second line to align with the string "error: "
fmt.Errorf("renaming module %q to %q conflicts with existing module\n"+
" %s <-- existing module defined here",
oldName, newName, existingGroup.modules[0].pos),
oldName, newName, existingGroup.modules.firstModule().pos),
}
}

58
splice_modules_test.go
View file

@ -29,82 +29,82 @@ var (
)
var spliceModulesTestCases = []struct {
in []*moduleInfo
in modulesOrAliases
at int
with []*moduleInfo
out []*moduleInfo
with modulesOrAliases
out modulesOrAliases
outAt int
reallocate bool
}{
{
// Insert at the beginning
in: []*moduleInfo{testModuleA, testModuleB, testModuleC},
in: modulesOrAliases{testModuleA, testModuleB, testModuleC},
at: 0,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleD, testModuleE, testModuleB, testModuleC},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleD, testModuleE, testModuleB, testModuleC},
outAt: 1,
reallocate: true,
},
{
// Insert in the middle
in: []*moduleInfo{testModuleA, testModuleB, testModuleC},
in: modulesOrAliases{testModuleA, testModuleB, testModuleC},
at: 1,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleA, testModuleD, testModuleE, testModuleC},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleA, testModuleD, testModuleE, testModuleC},
outAt: 2,
reallocate: true,
},
{
// Insert at the end
in: []*moduleInfo{testModuleA, testModuleB, testModuleC},
in: modulesOrAliases{testModuleA, testModuleB, testModuleC},
at: 2,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleA, testModuleB, testModuleD, testModuleE},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleA, testModuleB, testModuleD, testModuleE},
outAt: 3,
reallocate: true,
},
{
// Insert over a single element
in: []*moduleInfo{testModuleA},
in: modulesOrAliases{testModuleA},
at: 0,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleD, testModuleE},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleD, testModuleE},
outAt: 1,
reallocate: true,
},
{
// Insert at the beginning without reallocating
in: []*moduleInfo{testModuleA, testModuleB, testModuleC, nil}[0:3],
in: modulesOrAliases{testModuleA, testModuleB, testModuleC, nil}[0:3],
at: 0,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleD, testModuleE, testModuleB, testModuleC},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleD, testModuleE, testModuleB, testModuleC},
outAt: 1,
reallocate: false,
},
{
// Insert in the middle without reallocating
in: []*moduleInfo{testModuleA, testModuleB, testModuleC, nil}[0:3],
in: modulesOrAliases{testModuleA, testModuleB, testModuleC, nil}[0:3],
at: 1,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleA, testModuleD, testModuleE, testModuleC},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleA, testModuleD, testModuleE, testModuleC},
outAt: 2,
reallocate: false,
},
{
// Insert at the end without reallocating
in: []*moduleInfo{testModuleA, testModuleB, testModuleC, nil}[0:3],
in: modulesOrAliases{testModuleA, testModuleB, testModuleC, nil}[0:3],
at: 2,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleA, testModuleB, testModuleD, testModuleE},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleA, testModuleB, testModuleD, testModuleE},
outAt: 3,
reallocate: false,
},
{
// Insert over a single element without reallocating
in: []*moduleInfo{testModuleA, nil}[0:1],
in: modulesOrAliases{testModuleA, nil}[0:1],
at: 0,
with: []*moduleInfo{testModuleD, testModuleE},
out: []*moduleInfo{testModuleD, testModuleE},
with: modulesOrAliases{testModuleD, testModuleE},
out: modulesOrAliases{testModuleD, testModuleE},
outAt: 1,
reallocate: false,
},
@ -112,7 +112,7 @@ var spliceModulesTestCases = []struct {
func TestSpliceModules(t *testing.T) {
for _, testCase := range spliceModulesTestCases {
in := make([]*moduleInfo, len(testCase.in), cap(testCase.in))
in := make(modulesOrAliases, len(testCase.in), cap(testCase.in))
copy(in, testCase.in)
origIn := in
got, gotAt := spliceModules(in, testCase.at, testCase.with)
@ -139,6 +139,6 @@ func TestSpliceModules(t *testing.T) {
}
}
func sameArray(a, b []*moduleInfo) bool {
func sameArray(a, b modulesOrAliases) bool {
return &a[0:cap(a)][cap(a)-1] == &b[0:cap(b)][cap(b)-1]
}

4
visit_test.go
View file

@ -149,13 +149,13 @@ func setupVisitTest(t *testing.T) *Context {
func TestVisit(t *testing.T) {
ctx := setupVisitTest(t)
topModule := ctx.moduleGroupFromName("A", nil).modules[0].logicModule.(*visitModule)
topModule := ctx.moduleGroupFromName("A", nil).modules.firstModule().logicModule.(*visitModule)
assertString(t, topModule.properties.VisitDepsDepthFirst, "FEDCB")
assertString(t, topModule.properties.VisitDepsDepthFirstIf, "FEDC")
assertString(t, topModule.properties.VisitDirectDeps, "B")
assertString(t, topModule.properties.VisitDirectDepsIf, "")
eModule := ctx.moduleGroupFromName("E", nil).modules[0].logicModule.(*visitModule)
eModule := ctx.moduleGroupFromName("E", nil).modules.firstModule().logicModule.(*visitModule)
assertString(t, eModule.properties.VisitDepsDepthFirst, "F")
assertString(t, eModule.properties.VisitDepsDepthFirstIf, "F")
assertString(t, eModule.properties.VisitDirectDeps, "FF")