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Implement named constants

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This commit is contained in:
Ayke van Laethem
2018-04-20 14:52:07 +02:00
parent f5f64782ce
commit e436ca7c8d
1 changed files with 13 additions and 2 deletions
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tgo.go
+13 -2
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@@ -666,7 +666,16 @@ func (c *Compiler) parseConst(expr *ssa.Const) (llvm.Value, error) {
strObj := llvm.ConstStruct([]llvm.Value{strLen, strPtr}, false)
return strObj, nil
case constant.Int:
switch expr.Type().(*types.Basic).Kind() {
return c.parseConstInt(expr, expr.Type())
default:
return llvm.Value{}, errors.New("todo: unknown constant")
}
}
func (c *Compiler) parseConstInt(expr *ssa.Const, typ types.Type) (llvm.Value, error) {
switch typ := typ.(type) {
case *types.Basic:
switch typ.Kind() {
case types.Bool:
n, _ := constant.Int64Val(expr.Value)
return llvm.ConstInt(llvm.Int1Type(), uint64(n), false), nil
@@ -694,8 +703,10 @@ func (c *Compiler) parseConst(expr *ssa.Const) (llvm.Value, error) {
default:
return llvm.Value{}, errors.New("todo: unknown integer constant")
}
case *types.Named:
return c.parseConstInt(expr, typ.Underlying())
default:
return llvm.Value{}, errors.New("todo: unknown constant")
return llvm.Value{}, errors.New("todo: unknown constant: " + fmt.Sprintf("%#v", typ))
}
}