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package ast
import "fmt"
func VariableListElementTypesAreHomogenous(variableName string, list []Variable) (Type, error) {
if len(list) == 0 {
return TypeInvalid, fmt.Errorf("list %q does not have any elements so cannot determine type.", variableName)
}
elemType := TypeUnknown
for _, v := range list {
if v.Type == TypeUnknown {
continue
}
if elemType == TypeUnknown {
elemType = v.Type
continue
}
if v.Type != elemType {
return TypeInvalid, fmt.Errorf(
"list %q does not have homogenous types. found %s and then %s",
variableName,
elemType, v.Type,
)
}
elemType = v.Type
}
return elemType, nil
}
func VariableMapValueTypesAreHomogenous(variableName string, vmap map[string]Variable) (Type, error) {
if len(vmap) == 0 {
return TypeInvalid, fmt.Errorf("map %q does not have any elements so cannot determine type.", variableName)
}
elemType := TypeUnknown
for _, v := range vmap {
if v.Type == TypeUnknown {
continue
}
if elemType == TypeUnknown {
elemType = v.Type
continue
}
if v.Type != elemType {
return TypeInvalid, fmt.Errorf(
"map %q does not have homogenous types. found %s and then %s",
variableName,
elemType, v.Type,
)
}
elemType = v.Type
}
return elemType, nil
}
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