func buildPkgSym(b *builder, m *tast.MemberExpr, pkg *types.Pkg) *ref {
sym := m.Symbol
if pkg.Lang == "asm8" {
switch sym.Type {
case asm8.SymVar:
if m.Type() != types.Uint {
panic("bug")
}
ptr := b.newTemp(types.Uint)
s := ir.NewHeapSym(sym.Pkg(), sym.Name(), 0, false, false)
b.b.Arith(ptr.IR(), nil, "&", s)
return ptr
case asm8.SymFunc:
if !types.SameType(m.Type(), types.VoidFunc) {
panic("bug")
}
return newRef(
types.VoidFunc,
ir.NewFuncSym(sym.Pkg(), sym.Name(), ir.VoidFuncSig),
)
}
panic("bug")
}
switch sym.Type {
case tast.SymConst:
return sym.Obj.(*objConst).ref
case tast.SymVar:
return sym.Obj.(*objVar).ref
case tast.SymFunc:
return sym.Obj.(*objFunc).ref
}
panic("bug")
}
func fillFuncAlias(funcs []*tast.FuncAlias) {
for _, f := range funcs {
sym := f.Sym
name := sym.Name()
t := sym.ObjType.(*types.Func)
sig := makeFuncSig(t)
fsym := ir.NewFuncSym(f.Of.Pkg(), f.Of.Name(), sig)
f.Sym.Obj = &objFunc{
name: name,
ref: newRef(t, fsym),
isAlias: true,
}
}
}
func declareBuiltin(b *builder, builtin *link8.Pkg) {
path := builtin.Path()
e := b.p.HookBuiltin(builtin)
if e != nil {
b.Errorf(nil, e.Error())
return
}
o := func(name, as string, t *types.Func) ir.Ref {
sym := builtin.SymbolByName(name)
if sym == nil {
b.Errorf(nil, "builtin symbol %s missing", name)
return nil
} else if sym.Type != link8.SymFunc {
b.Errorf(nil, "builtin symbol %s is not a function", name)
return nil
}
ref := ir.NewFuncSym(path, name, makeFuncSig(t))
obj := &objFunc{name: as, ref: newRef(t, ref)}
s := sym8.Make(b.path, as, tast.SymFunc, obj, t, nil)
pre := b.scope.Declare(s)
if pre != nil {
b.Errorf(nil, "builtin symbol %s declare failed", name)
return nil
}
return ref
}
// TODO: export these as generic function pointer symbols, and convert
// them into G functions in g files, rather than inside here in the
// compiler.
o("PrintInt32", "printInt", types.NewVoidFunc(types.Int))
o("PrintUint32", "printUint", types.NewVoidFunc(types.Uint))
o("PrintChar", "printChar", types.NewVoidFunc(types.Int8))
b.panicFunc = o("Panic", "panic", types.VoidFunc)
bi := func(name string) {
t := types.NewBuiltInFunc(name)
obj := &objFunc{name: name, ref: newRef(t, nil)}
s := sym8.Make(b.path, name, tast.SymFunc, obj, t, nil)
pre := b.scope.Declare(s)
if pre != nil {
b.Errorf(nil, "builtin symbol %s declare failed", name)
}
}
bi("len")
bi("make")
c := func(name string, r *ref) {
// TODO: declare these as typed consts
obj := &objConst{name, r}
s := sym8.Make(b.path, name, tast.SymConst, obj, r.Type(), nil)
pre := b.scope.Declare(s)
if pre != nil {
b.Errorf(nil, "builtin symbol %s declare failed", name)
}
}
c("true", refTrue)
c("false", refFalse)
c("nil", refNil)
t := func(name string, t types.T) {
s := sym8.Make(b.path, name, tast.SymType, nil, &types.Type{t}, nil)
pre := b.scope.Declare(s)
if pre != nil {
b.Errorf(nil, "builtin symbol %s declare failed", name)
}
}
t("int", types.Int)
t("uint", types.Uint)
t("int32", types.Int)
t("uint32", types.Uint)
t("int8", types.Int8)
t("uint8", types.Uint8)
t("char", types.Int8)
t("byte", types.Uint8)
t("bool", types.Bool)
t("float", types.Float32)
t("string", types.String)
// t("ptr", &types.Pointer{types.Uint8})
// t("float32", types.Float32)
// t("string", types.String)
}