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use chrono::NaiveDateTime;
use lazy_static::lazy_static;
use proc_macro2::TokenTree;
use lowertest::{
deserialize_optional, GenericTestDeserializeContext, MzReflect, ReflectedTypeInfo,
};
use ore::str::StrExt;
use repr::adt::numeric::Numeric;
use repr::{ColumnType, Datum, Row, RowArena, ScalarType};
lazy_static! {
pub static ref RTI: ReflectedTypeInfo = {
let mut rti = ReflectedTypeInfo::default();
ColumnType::add_to_reflected_type_info(&mut rti);
rti
};
}
fn parse_litval<'a, F>(litval: &'a str, littyp: &str) -> Result<F, String>
where
F: std::str::FromStr,
F::Err: ToString,
{
litval.parse::<F>().map_err(|e| {
format!(
"error when parsing {} into {}: {}",
litval,
littyp,
e.to_string()
)
})
}
pub fn test_spec_to_row<'a, I>(datum_iter: I) -> Result<Row, String>
where
I: Iterator<Item = (&'a str, &'a ScalarType)>,
{
let temp_storage = RowArena::new();
Row::try_pack(datum_iter.map(|(litval, littyp)| {
if litval == "null" {
Ok(Datum::Null)
} else {
match littyp {
ScalarType::Bool => Ok(Datum::from(parse_litval::<bool>(litval, "bool")?)),
ScalarType::Numeric { .. } => {
Ok(Datum::from(parse_litval::<Numeric>(litval, "Numeric")?))
}
ScalarType::Int16 => Ok(Datum::from(parse_litval::<i16>(litval, "i16")?)),
ScalarType::Int32 => Ok(Datum::from(parse_litval::<i32>(litval, "i32")?)),
ScalarType::Int64 => Ok(Datum::from(parse_litval::<i64>(litval, "i64")?)),
ScalarType::Float32 => Ok(Datum::from(parse_litval::<f32>(litval, "f32")?)),
ScalarType::Float64 => Ok(Datum::from(parse_litval::<f64>(litval, "f64")?)),
ScalarType::String => Ok(Datum::from(
temp_storage.push_string(lowertest::unquote(litval)),
)),
ScalarType::Timestamp => {
let datetime = if litval.contains('.') {
NaiveDateTime::parse_from_str(litval, "\"%Y-%m-%d %H:%M:%S%.f\"")
} else {
NaiveDateTime::parse_from_str(litval, "\"%Y-%m-%d %H:%M:%S\"")
};
Ok(Datum::from(datetime.map_err(|e| {
format!("Error while parsing NaiveDateTime: {}", e)
})?))
}
_ => Err(format!("Unsupported literal type {:?}", littyp)),
}
}
}))
}
pub fn datum_to_test_spec(datum: Datum) -> String {
let result = format!("{}", datum);
match datum {
Datum::Timestamp(_) => result.quoted().to_string(),
_ => result,
}
}
pub fn get_scalar_type_or_default<I>(
litval: &str,
scalar_type_stream: &mut I,
) -> Result<ScalarType, String>
where
I: Iterator<Item = TokenTree>,
{
let typ: Option<ScalarType> = deserialize_optional(
scalar_type_stream,
"ScalarType",
&RTI,
&mut GenericTestDeserializeContext::default(),
)?;
match typ {
Some(typ) => Ok(typ),
None => {
if ["true", "false", "null"].contains(&litval) {
Ok(ScalarType::Bool)
} else if litval.starts_with('\"') {
Ok(ScalarType::String)
} else if litval.contains('.') {
Ok(ScalarType::Float64)
} else {
Ok(ScalarType::Int64)
}
}
}
}
pub fn extract_literal_string<I>(
first_arg: &TokenTree,
rest_of_stream: &mut I,
) -> Result<Option<String>, String>
where
I: Iterator<Item = TokenTree>,
{
match first_arg {
TokenTree::Ident(ident) => {
if ["true", "false", "null"].contains(&&ident.to_string()[..]) {
Ok(Some(ident.to_string()))
} else {
Ok(None)
}
}
TokenTree::Literal(literal) => Ok(Some(literal.to_string())),
TokenTree::Punct(punct) if punct.as_char() == '-' => {
match rest_of_stream.next() {
Some(TokenTree::Literal(literal)) => {
Ok(Some(format!("{}{}", punct.as_char(), literal)))
}
None => Ok(None),
Some(other) => Err(format!(
"{}{:?} is not a valid literal",
punct.as_char(),
other
)),
}
}
_ => Ok(None),
}
}
pub fn parse_vec_of_literals(token: &TokenTree) -> Result<Vec<String>, String> {
match token {
TokenTree::Group(group) => {
let mut inner_iter = group.stream().into_iter();
let mut result = Vec::new();
while let Some(symbol) = inner_iter.next() {
match extract_literal_string(&symbol, &mut inner_iter)? {
Some(dat) => result.push(dat),
None => {
return Err(format!("{:?} cannot be interpreted as a literal.", symbol));
}
}
}
Ok(result)
}
invalid => Err(format!(
"{:?} cannot be parsed as a vec of literals",
invalid
)),
}
}