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use super::KeywordsEscaper;
use crate::field_mapper::base::field_seg::FieldSeg;
use crate::{FieldDef};
use proc_macro2::TokenStream;
use quote::format_ident;
use std::borrow::Cow;
#[derive(Clone, Copy)]
pub enum ConnectOp {
Comma,
And,
Or,
}
impl Default for ConnectOp {
fn default() -> Self {
ConnectOp::Comma
}
}
impl ConnectOp {
pub fn as_str(&self) -> &'static str {
match self {
ConnectOp::Comma => ",",
ConnectOp::And => " AND ",
ConnectOp::Or => " OR ",
}
}
}
#[derive(Clone, Debug, Copy)]
pub enum LeadingCommaType {
Leading,
NoLeading,
CheckedLeading,
}
pub trait SingleFieldMapper {
fn map_static<'a>(
&'a self,
field: &'a FieldDef<'a>,
escaper: &dyn KeywordsEscaper,
) -> Cow<'a, str> {
panic!("_map_static is not implemented")
}
fn map_static_indexed<'a>(
&'a self,
field: &'a FieldDef<'a>,
escaper: &dyn KeywordsEscaper,
index: usize,
) -> Cow<'a, str> {
self.map_static(field, escaper)
}
fn map_dynamic<'a>(
&'a self,
field: &'a FieldDef<'a>,
escaper: &dyn KeywordsEscaper,
) -> Cow<'a, str> {
self.map_static(field, escaper)
}
fn map_dynamic_indexed<'a>(
&'a self,
field: &'a FieldDef<'a>,
escaper: &dyn KeywordsEscaper,
) -> Cow<'a, str> {
self.map_dynamic(field, escaper)
}
fn map_single<'a>(
&'a self,
field: &'a FieldDef<'a>,
escaper: &dyn KeywordsEscaper,
is_optional: bool,
indexed: bool,
leading_comma_type: LeadingCommaType,
connect_op: ConnectOp,
is_enum: bool,
is_cond: bool,
) -> TokenStream {
let ident = format_ident!("{}", field.struct_field.get_name());
let seg = if indexed {
if is_cond && !field.is_location_expr() {
self.map_static_indexed(field, escaper, 0)
} else {
self.map_dynamic_indexed(field, escaper)
}
} else {
if is_cond && !field.is_location_expr() {
self.map_static(field, escaper)
} else {
self.map_dynamic(field, escaper)
}
};
let seg = FieldSeg::from(seg, Some(ident), indexed, field.is_location_expr());
seg.translate(leading_comma_type, connect_op, is_optional, is_enum)
}
fn map_single_optional<'a>(
&'a self,
field: &'a FieldDef<'a>,
escaper: &dyn KeywordsEscaper,
indexed: bool,
leading_comma_type: LeadingCommaType,
connect_op: ConnectOp,
is_enum: bool,
static_cond: bool,
) -> TokenStream {
self.map_single(field, escaper, true, indexed, leading_comma_type, connect_op, is_enum, static_cond)
}
// fn get_value_name(&self) -> &'static str;
//
// fn map_compile_time<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// index: Option<usize>,
// leading_comma: bool,
// ) -> Cow<'a, str> {
// if let Some(index) = index {
// if leading_comma {
// self.map_indexed(field, escaper, LeadingCommaType::Leading, index)
// } else {
// self.map_indexed(field, escaper, LeadingCommaType::NoLeading, index)
// }
// } else {
// if leading_comma {
// self.map(field, escaper, LeadingCommaType::Leading)
// } else {
// self.map(field, escaper, LeadingCommaType::NoLeading)
// }
// }
// }
//
// fn map_runtime_time<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// indexed: bool,
// leading_comma: bool,
// ) -> TokenStream {
// if indexed {
// if leading_comma {
// self.map_dynamic_indexed_with_leading_comma(field, escaper)
// } else {
// self.map_dynamic_indexed(field, escaper)
// }
// } else {
// if leading_comma {
// self.map_dynamic(field, escaper, LeadingCommaType::Leading, false)
// } else {
// self.map_dynamic(field, escaper, LeadingCommaType::NoLeading, false)
// }
// }
// }
//
// fn transform(
// &self,
// check_prev: bool,
// indexed: bool,
// optional_name: Option<&str>,
// is_first_required: bool,
// origin: TokenStream,
// ) -> TokenStream {
// // release mode, "xxx".as_ref() will be optimized to "xxx"
// // so add #origin.as_ref() will be zero overhead
// let mut stream = if check_prev {
// quote! {
// if has_prev {
// s.push(',');
// } else {
// has_prev = true;
// }
// s.push_str(#origin.as_ref());
// }
// } else {
// quote! {
// s.push_str(#origin.as_ref());
// }
// };
//
// // if dynamic indexed, add index + 1
// if indexed {
// stream.extend(quote! {
// index = index + 1;
// });
// }
//
// // if is optional, wrap it
// if let Some(name) = optional_name {
// assert!(!is_first_required);
// let ident = format_ident!("{}", name);
// quote! {
// if !self.#ident.is_none() {
// #stream
// }
// }
// } else {
// if is_first_required {
// quote! {
// #stream
// has_prev = true;
// }
// } else {
// stream
// }
// }
// }
//
// fn transform_dynamic<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// indexed: bool,
// index: usize,
// group_index: usize,
// first_required_group_index: usize,
// ) -> TokenStream {
// if !field.struct_field.is_optional {
// if index == 0 && group_index == 0 {
// assert_eq!(first_required_group_index, 0);
// // Required;
// let stream = self.map_runtime_time(field, escaper, indexed, false);
// return self.transform(false, indexed, None, true, stream);
// }
// if index == 0 && group_index <= first_required_group_index {
// assert_eq!(group_index, first_required_group_index);
// assert_ne!(group_index, 0);
// // RequiredCheckPrev;
// let stream = self.map_runtime_time(field, escaper, indexed, false);
// return self.transform(true, indexed, None, true, stream);
// }
// // RequiredLeadingComma
// let stream = self.map_runtime_time(field, escaper, indexed, true);
// return self.transform(false, indexed, None, false, stream);
// } else {
// if index == 0 && group_index == 0 {
// assert_ne!(first_required_group_index, 0);
// // StreamType::Optional;
// let stream = self.map_runtime_time(field, escaper, indexed, false);
// return self.transform(
// false,
// indexed,
// Some(&field.struct_field.name),
// false,
// stream,
// );
// }
// if group_index < first_required_group_index {
// // Optional Check Prev
// let stream = self.map_runtime_time(field, escaper, indexed, false);
// return self.transform(
// true,
// indexed,
// Some(&field.struct_field.name),
// false,
// stream,
// );
// } else {
// assert_ne!(group_index, first_required_group_index);
// // Optional Leading Comma
// let stream = self.map_runtime_time(field, escaper, indexed, true);
// return self.transform(
// false,
// indexed,
// Some(&field.struct_field.name),
// false,
// stream,
// );
// }
// }
// }
// fn map_single_compiled<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// index: Option<usize>,
// ) -> Cow<'a, str> {
// if let Some(idx) = index {
// let field_seg = self.map_single(field, escaper, true);
// assert_eq!(field_seg.is_expr(), false);
// assert_eq!(field_seg.is_indexed(), true);
// Cow::Owned(format!(field_seg.get_value())
// } else {
// let field_seg = self.map_single(field, escaper, false);
// assert_eq!(field_seg.is_expr(), false);
// assert_eq!(field_seg.is_indexed(), false);
// Cow::Borrowed(field_seg.get_value())
// }
// }
// fn map_single<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// indexed: bool,
// ) -> FieldSeg<'a>;
// fn map<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// leading_comma: LeadingCommaType,
// ) -> Cow<'a, str>;
//
// fn map_indexed<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// leading_comma: LeadingCommaType,
// index: usize,
// ) -> Cow<'a, str>;
// fn translate_dynamic<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// leading_comma: LeadingCommaType,
// indexed: bool,
// ) -> TokenStream {
// let ident = format_ident!("{}", field.struct_field.name);
// let field_seg = FieldSeg::from_str()
// }
// fn map_with_leading_comma<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// ) -> Cow<'a, str>;
// fn map_indexed_with_leading_comma<'a>(
// &'a self,
// field: &'a FieldDef<'a>,
// escaper: &dyn KeywordsEscaper,
// index: usize,
// ) -> Cow<'a, str>;
// fn map_dynamic(
// &self,
// field: &FieldDef,
// escaper: &dyn KeywordsEscaper,
// leading_comma_type: LeadingCommaType,
// indexed: bool,
// ) -> TokenStream;
//
// fn map_dynamic_with_leading_comma(
// &self,
// field: &FieldDef,
// escaper: &dyn KeywordsEscaper,
// ) -> TokenStream;
//
// fn map_dynamic_indexed(&self, field: &FieldDef, escaper: &dyn KeywordsEscaper) -> TokenStream;
// fn map_dynamic_indexed_with_leading_comma(
// &self,
// field: &FieldDef,
// escaper: &dyn KeywordsEscaper,
// ) -> TokenStream;
}