func buildConst(b *builder, c *tast.Const) *ref {
if _, ok := types.NumConst(c.T); ok {
// untyped consts are just types.
return newRef(c.T, nil)
}
if t, ok := c.T.(types.Basic); ok {
v := c.ConstValue.(int64)
switch t {
case types.Int, types.Uint:
return newRef(c.T, ir.Num(uint32(v)))
case types.Int8, types.Uint8, types.Bool:
return newRef(c.T, ir.Byt(uint8(v)))
default:
panic("other basic types not supported yet")
}
}
if c.T == types.String {
s := c.ConstValue.(string)
ret := b.newTemp(c.T)
b.b.Arith(ret.IR(), nil, "makeStr", b.p.NewString(s))
return ret
}
panic("other const types not supported")
}
func constNumIr(v int64, t types.T) ir.Ref {
b, ok := t.(types.Basic)
if ok {
switch b {
case types.Int:
return ir.Snum(int32(v))
case types.Uint:
return ir.Num(uint32(v))
case types.Int8, types.Uint8:
return ir.Byt(uint8(v))
}
}
panic("expect an integer type")
}
package g8
import (
"e8vm.io/e8vm/g8/ir"
"e8vm.io/e8vm/g8/tast"
"e8vm.io/e8vm/g8/types"
"e8vm.io/e8vm/link8"
"e8vm.io/e8vm/sym8"
)
var (
refTrue = newRef(types.Bool, ir.Byt(1))
refFalse = newRef(types.Bool, ir.Byt(0))
refNil = newRef(types.Nil(), nil)
)
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)