func (v *Codegen) genVariableDecl(n *parser.VariableDecl, semicolon bool) llvm.Value {
var res llvm.Value
if v.inFunction() {
mangledName := n.Variable.MangledName(parser.MANGLE_ARK_UNSTABLE)
funcEntry := v.currentLLVMFunction().EntryBasicBlock()
// use this builder() for the variable alloca
// this means all allocas go at the start of the function
// so each variable is only allocated once
allocBuilder := llvm.NewBuilder()
if funcEntry == v.builder().GetInsertBlock() {
allocBuilder.SetInsertPointAtEnd(funcEntry)
} else {
allocBuilder.SetInsertPointBefore(funcEntry.LastInstruction())
}
varType := v.typeToLLVMType(n.Variable.Type)
alloc := allocBuilder.CreateAlloca(varType, mangledName)
allocBuilder.Dispose()
v.variableLookup[n.Variable] = alloc
if n.Assignment != nil {
if value := v.genExpr(n.Assignment); !value.IsNil() {
v.builder().CreateStore(value, alloc)
}
}
} else {
// TODO cbindings
cBinding := false
mangledName := n.Variable.MangledName(parser.MANGLE_ARK_UNSTABLE)
varType := v.typeToLLVMType(n.Variable.Type)
value := llvm.AddGlobal(v.curFile.LlvmModule, varType, mangledName)
// TODO: External by default to export everything, change once we get access specifiers
if !cBinding && !n.IsPublic() {
value.SetLinkage(nonPublicLinkage)
}
value.SetGlobalConstant(!n.Variable.Mutable)
if n.Assignment != nil {
value.SetInitializer(v.genExpr(n.Assignment))
}
v.variableLookup[n.Variable] = value
}
return res
}
func (v *AttributeCheck) CheckVariableDecl(s *SemanticAnalyzer, n *parser.VariableDecl) {
v.CheckAttrsDistanceFromLine(s, n.Variable.Attrs, n.Pos().Line, "variable", n.Variable.Name)
for _, attr := range n.Variable.Attrs {
switch attr.Key {
case "deprecated":
// value is optional, nothing to check
case "unused":
default:
s.Err(attr, "Invalid variable attribute key `%s`", attr.Key)
}
}
}