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use itertools::Itertools;
use crate::generator::dart::dart_comments;
use crate::generator::dart::ty::*;
use crate::ir::*;
use crate::target::Acc;
use crate::type_dart_generator_struct;
type_dart_generator_struct!(TypeEnumRefGenerator, IrTypeEnumRef);
impl TypeDartGeneratorTrait for TypeEnumRefGenerator<'_> {
fn api2wire_body(&self) -> Acc<Option<String>> {
let variants = (self.ir.get(self.context.ir_file).variants())
.iter()
.enumerate()
.map(|(idx, variant)| {
let fields = match &variant.kind {
IrVariantKind::Value => vec![],
IrVariantKind::Struct(st) => (st.fields)
.iter()
.map(|field| {
format!(
",api2wire_{}(raw.{})",
field.ty.safe_ident(),
field.name.dart_style()
)
})
.collect(),
}
.join("");
format!(
"if (raw is {variant}) {{
return [{} {}];
}}",
idx,
fields,
variant = variant.wrapper_name.rust_style(),
)
})
.join("\n");
Acc {
wasm: Some(format!(
"{}
throw Exception('unreachable');",
variants,
)),
..Default::default()
}
}
fn api_fill_to_wire_body(&self) -> Option<String> {
Some(
self.ir
.get(self.context.ir_file)
.variants()
.iter()
.enumerate()
.map(|(idx, variant)| {
if let IrVariantKind::Value = &variant.kind {
format!(
"if (apiObj is {}) {{ wireObj.tag = {}; return; }}",
variant.wrapper_name, idx
)
} else {
let pre_field: Vec<_> = match &variant.kind {
IrVariantKind::Struct(st) => st
.fields
.iter()
.map(|field| {
format!(
"var pre_{} = api2wire_{}(apiObj.{});",
field.name.rust_style(),
field.ty.safe_ident(),
field.name.dart_style()
)
})
.collect(),
_ => unreachable!(),
};
let r = format!("wireObj.kind.ref.{}.ref", variant.name);
let body: Vec<_> = match &variant.kind {
IrVariantKind::Struct(st) => st
.fields
.iter()
.map(|field| {
format!(
"{}.{name} = pre_{name};",
r,
name = field.name.rust_style(),
)
})
.collect(),
_ => unreachable!(),
};
format!(
"if (apiObj is {5}) {{
{3}
wireObj.tag = {1};
wireObj.kind = inner.inflate_{2}_{0}();
{4}
return;
}}",
variant.name,
idx,
self.ir.name,
pre_field.join("\n"),
body.join("\n"),
variant.wrapper_name
)
}
})
.join("\n"),
)
}
fn wire2api_body(&self) -> String {
let enu = self.ir.get(self.context.ir_file);
assert!(enu.is_struct());
let variants = enu
.variants()
.iter()
.enumerate()
.map(|(idx, variant)| {
let args = match &variant.kind {
IrVariantKind::Value => "".to_owned(),
IrVariantKind::Struct(st) => st
.fields
.iter()
.enumerate()
.map(|(idx, field)| {
let val =
format!("_wire2api_{}(raw[{}]),", field.ty.safe_ident(), idx + 1);
if st.is_fields_named {
format!("{}: {}", field.name.dart_style(), val)
} else {
val
}
})
.collect::<Vec<_>>()
.join(""),
};
format!("case {}: return {}({});", idx, variant.wrapper_name, args)
})
.collect::<Vec<_>>();
format!(
"switch (raw[0]) {{
{}
default: throw Exception(\"unreachable\");
}}",
variants.join("\n"),
)
}
fn structs(&self) -> String {
let src = self.ir.get(self.context.ir_file);
let comments = dart_comments(&src.comments);
if src.is_struct() {
let variants = src
.variants()
.iter()
.map(|variant| {
let args = match &variant.kind {
IrVariantKind::Value => "".to_owned(),
IrVariantKind::Struct(IrStruct {
is_fields_named: false,
fields,
..
}) => {
let types = fields.iter().map(|field| &field.ty).collect::<Vec<_>>();
let split = optional_boundary_index(&types);
let types = fields
.iter()
.map(|field| {
format!(
"{}{} {},",
dart_comments(&field.comments),
field.ty.dart_api_type(),
field.name.dart_style()
)
})
.collect::<Vec<_>>();
if let Some(idx) = split {
let before = &types[..idx];
let after = &types[idx..];
format!("{}[{}]", before.join(""), after.join(""))
} else {
types.join("")
}
}
IrVariantKind::Struct(st) => {
let fields = st
.fields
.iter()
.map(|field| {
format!(
"{}{}{} {},",
dart_comments(&field.comments),
field.ty.dart_required_modifier(),
field.ty.dart_api_type(),
field.name.dart_style()
)
})
.collect::<Vec<_>>();
format!("{{ {} }}", fields.join(""))
}
};
format!(
"{}const factory {}.{}({}) = {};",
dart_comments(&variant.comments),
self.ir.name,
variant.name.dart_style(),
args,
variant.wrapper_name.rust_style(),
)
})
.collect::<Vec<_>>();
format!(
"@freezed
class {0} with _${0} {{
{1}
}}",
self.ir.name,
variants.join("\n")
)
} else {
let variants = src
.variants()
.iter()
.map(|variant| {
format!(
"{}{},",
dart_comments(&variant.comments),
variant.name.rust_style()
)
})
.collect::<Vec<_>>()
.join("\n");
format!(
"{}enum {} {{
{}
}}",
comments, self.ir.name, variants
)
}
}
}