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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use crate::swc_ecma_ast;
use super::ts_type::ts_type_ann_to_def;
use super::ParamDef;
use super::ParamKind;
use crate::swc_ecma_ast::Pat;
use crate::swc_ecma_ast::TsFnParam;
pub fn ident_to_param_def(ident: &swc_ecma_ast::Ident) -> ParamDef {
let ts_type = ident.type_ann.as_ref().map(|rt| ts_type_ann_to_def(rt));
ParamDef {
name: ident.sym.to_string(),
kind: ParamKind::Identifier,
optional: ident.optional,
ts_type,
}
}
fn rest_pat_to_param_def(rest_pat: &swc_ecma_ast::RestPat) -> ParamDef {
let name = match &*rest_pat.arg {
Pat::Ident(ident) => ident.sym.to_string(),
_ => "<TODO>".to_string(),
};
let ts_type = rest_pat.type_ann.as_ref().map(|rt| ts_type_ann_to_def(rt));
ParamDef {
name,
kind: ParamKind::Rest,
optional: false,
ts_type,
}
}
fn object_pat_to_param_def(object_pat: &swc_ecma_ast::ObjectPat) -> ParamDef {
let ts_type = object_pat
.type_ann
.as_ref()
.map(|rt| ts_type_ann_to_def(rt));
ParamDef {
name: "".to_string(),
kind: ParamKind::Object,
optional: object_pat.optional,
ts_type,
}
}
fn array_pat_to_param_def(array_pat: &swc_ecma_ast::ArrayPat) -> ParamDef {
let ts_type = array_pat.type_ann.as_ref().map(|rt| ts_type_ann_to_def(rt));
ParamDef {
name: "".to_string(),
kind: ParamKind::Array,
optional: array_pat.optional,
ts_type,
}
}
pub fn assign_pat_to_param_def(
assign_pat: &swc_ecma_ast::AssignPat,
) -> ParamDef {
pat_to_param_def(&*assign_pat.left)
}
pub fn pat_to_param_def(pat: &swc_ecma_ast::Pat) -> ParamDef {
match pat {
Pat::Ident(ident) => ident_to_param_def(ident),
Pat::Array(array_pat) => array_pat_to_param_def(array_pat),
Pat::Rest(rest_pat) => rest_pat_to_param_def(rest_pat),
Pat::Object(object_pat) => object_pat_to_param_def(object_pat),
Pat::Assign(assign_pat) => assign_pat_to_param_def(assign_pat),
_ => unreachable!(),
}
}
pub fn ts_fn_param_to_param_def(
ts_fn_param: &swc_ecma_ast::TsFnParam,
) -> ParamDef {
match ts_fn_param {
TsFnParam::Ident(ident) => ident_to_param_def(ident),
TsFnParam::Array(array_pat) => array_pat_to_param_def(array_pat),
TsFnParam::Rest(rest_pat) => rest_pat_to_param_def(rest_pat),
TsFnParam::Object(object_pat) => object_pat_to_param_def(object_pat),
}
}
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