loader: switch to custom program loader

loader/ssa.go

@@ -0,0 +1,18 @@
+package loader
+
+import (
+	"golang.org/x/tools/go/ssa"
+)
+
+// LoadSSA constructs the SSA form of the loaded packages.
+//
+// The program must already be parsed and type-checked with the .Parse() method.
+func (p *Program) LoadSSA() *ssa.Program {
+	prog := ssa.NewProgram(p.fset, ssa.SanityCheckFunctions|ssa.BareInits|ssa.GlobalDebug)
+
+	for _, pkg := range p.Sorted() {
+		prog.CreatePackage(pkg.Pkg, pkg.Files, &pkg.Info, true)
+	}
+
+	return prog
+}