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#![recursion_limit = "128"]
#[macro_use]
extern crate quote;
extern crate syn;
#[macro_use]
extern crate quick_error;
#[macro_use]
extern crate nom;
extern crate serde;
extern crate serde_derive_internals;
extern crate serde_json;
extern crate chrono;
pub mod date_format;
pub mod elastic_type;
fn get_elastic_meta_items<'a, I>(attrs: I) -> Vec<syn::NestedMetaItem>
where
I: IntoIterator<Item = &'a syn::Attribute> + 'a,
{
attrs
.into_iter()
.filter_map(|attr| match attr.value {
syn::MetaItem::List(ref key, ref list) if key == "elastic" => Some(list),
_ => None,
})
.flat_map(|list| list)
.cloned()
.collect()
}
fn expect_name_value<'a>(name: &str, meta_item: &'a syn::NestedMetaItem) -> Option<&'a syn::Lit> {
match *meta_item {
syn::NestedMetaItem::MetaItem(syn::MetaItem::NameValue(ref key, ref lit))
if key == name =>
{
Some(lit)
}
_ => None,
}
}
fn expect_list<'a>(
name: &str,
meta_item: &'a syn::NestedMetaItem,
) -> Option<&'a [syn::NestedMetaItem]> {
match *meta_item {
syn::NestedMetaItem::MetaItem(syn::MetaItem::List(ref key, ref list)) if key == name => {
Some(list)
}
_ => None,
}
}
fn expect_ident<'a>(name: &str, meta_item: &'a syn::NestedMetaItem) -> bool {
match *meta_item {
syn::NestedMetaItem::MetaItem(syn::MetaItem::Word(ref ident)) if ident == name => true,
_ => false,
}
}
fn get_ident_from_lit(lit: &syn::Lit) -> Result<syn::Ident, &'static str> {
get_str_from_lit(lit).map(Into::into)
}
fn get_tokens_from_lit<'a>(lit: &'a syn::Lit) -> Result<quote::Tokens, &'static str> {
get_str_from_lit(lit).map(|s| {
let mut tokens = quote::Tokens::new();
tokens.append(s);
tokens
})
}
fn get_str_from_lit<'a>(lit: &'a syn::Lit) -> Result<&'a str, &'static str> {
match *lit {
syn::Lit::Str(ref s, _) => Ok(s.as_str()),
_ => {
return Err("Unable to get str from lit");
}
}
}