// Create looks for identifier in symboltable and creates a pointer if missing.
func (s *SymbolTable) Create(q *ast.QuestionNode) {
identifier := q.Identifier()
label := q.Label()
qType := q.Type()
pos := q.Pos()
primitive := q.Primitive()
_, ok := s.symbolExistP(identifier)
if ok {
s.appendErrf("%s:symboltable error: duplicated identifier found at symbol table: %s",
pos, identifier)
return
}
var symbol interface{}
switch qType {
case ast.ScalarQuestionType:
newSymbol, err := scalarQuestionFactory(primitive)
if err != nil {
s.appendErrf("%s:symboltable error: %s", pos,
err.Error())
}
symbol = newSymbol
case ast.ComputedQuestionType:
symbol = new(ComputedQuestion)
}
s.upsert(identifier, symbol)
s.detectRepeatedLabel(identifier, label)
}
