func printProgram(prog *loader.Program) {
// Created packages are the initial packages specified by a call
// to CreateFromFilenames or CreateFromFiles.
var names []string
for _, info := range prog.Created {
names = append(names, info.Pkg.Path())
}
fmt.Printf("created: %s\n", names)
// Imported packages are the initial packages specified by a
// call to Import or ImportWithTests.
names = nil
for _, info := range prog.Imported {
names = append(names, info.Pkg.Path())
}
sort.Strings(names)
fmt.Printf("imported: %s\n", names)
// InitialPackages contains the union of created and imported.
names = nil
for _, info := range prog.InitialPackages() {
names = append(names, info.Pkg.Path())
}
sort.Strings(names)
fmt.Printf("initial: %s\n", names)
// AllPackages contains all initial packages and their dependencies.
names = nil
for pkg := range prog.AllPackages {
names = append(names, pkg.Path())
}
sort.Strings(names)
fmt.Printf("all: %s\n", names)
}
// Create a pointer.Config whose scope is the initial packages of lprog
// and their dependencies.
func setupPTA(prog *ssa.Program, lprog *loader.Program, ptaLog io.Writer, reflection bool) (*pointer.Config, error) {
// TODO(adonovan): the body of this function is essentially
// duplicated in all go/pointer clients. Refactor.
// For each initial package (specified on the command line),
// if it has a main function, analyze that,
// otherwise analyze its tests, if any.
var testPkgs, mains []*ssa.Package
for _, info := range lprog.InitialPackages() {
initialPkg := prog.Package(info.Pkg)
// Add package to the pointer analysis scope.
if initialPkg.Func("main") != nil {
mains = append(mains, initialPkg)
} else {
testPkgs = append(testPkgs, initialPkg)
}
}
if testPkgs != nil {
if p := prog.CreateTestMainPackage(testPkgs...); p != nil {
mains = append(mains, p)
}
}
if mains == nil {
return nil, fmt.Errorf("analysis scope has no main and no tests")
}
return &pointer.Config{
Log: ptaLog,
Reflection: reflection,
Mains: mains,
}, nil
}
// FindMains returns the set of all packages loaded into the given
// loader.Program which contain main functions
func FindMains(p *loader.Program, s *ssa.Program) []*ssa.Package {
ips := p.InitialPackages()
mains := make([]*ssa.Package, 0, len(ips))
for _, info := range ips {
ssaPkg := s.Package(info.Pkg)
if ssaPkg.Func("main") != nil {
mains = append(mains, ssaPkg)
}
}
return mains
}
func newOracle(iprog *loader.Program, ptalog io.Writer, needs int, reflection bool) (*Oracle, error) {
o := &Oracle{fset: iprog.Fset}
// Retain type info for all ASTs in the program.
if needs&needRetainTypeInfo != 0 {
o.typeInfo = iprog.AllPackages
}
// Create SSA package for the initial packages and their dependencies.
if needs&needSSA != 0 {
var mode ssa.BuilderMode
if needs&needSSADebug != 0 {
mode |= ssa.GlobalDebug
}
prog := ssa.Create(iprog, mode)
// For each initial package (specified on the command line),
// if it has a main function, analyze that,
// otherwise analyze its tests, if any.
var testPkgs, mains []*ssa.Package
for _, info := range iprog.InitialPackages() {
initialPkg := prog.Package(info.Pkg)
// Add package to the pointer analysis scope.
if initialPkg.Func("main") != nil {
mains = append(mains, initialPkg)
} else {
testPkgs = append(testPkgs, initialPkg)
}
}
if testPkgs != nil {
if p := prog.CreateTestMainPackage(testPkgs...); p != nil {
mains = append(mains, p)
}
}
if mains == nil {
return nil, fmt.Errorf("analysis scope has no main and no tests")
}
o.ptaConfig.Log = ptalog
o.ptaConfig.Reflection = reflection
o.ptaConfig.Mains = mains
o.prog = prog
}
return o, nil
}
// Create a pointer.Config whose scope is the initial packages of lprog
// and their dependencies.
func setupPTA(prog *ssa.Program, lprog *loader.Program, ptaLog io.Writer, reflection bool) (*pointer.Config, error) {
// For each initial package (specified on the command line),
// if it has a main function, analyze that,
// otherwise analyze its tests, if any.
var mains []*ssa.Package
for _, info := range lprog.InitialPackages() {
p := prog.Package(info.Pkg)
// Add package to the pointer analysis scope.
if p.Pkg.Name() == "main" && p.Func("main") != nil {
mains = append(mains, p)
} else if main := prog.CreateTestMainPackage(p); main != nil {
mains = append(mains, main)
}
}
if mains == nil {
return nil, fmt.Errorf("analysis scope has no main and no tests")
}
return &pointer.Config{
Log: ptaLog,
Reflection: reflection,
Mains: mains,
}, nil
}