chore: start working on issue 2044

harper-core/src/linting/emigrate_immigrate.rs

@@ -0,0 +1,46 @@
+use crate::expr::{Expr, SequenceExpr};
+use crate::linting::ExprLinter;
+use crate::linting::expr_linter::Chunk;
+use crate::{Lint, Token};
+use crate::TokenStringExt;
+
+pub struct EmigrateImmigrate {
+    expr: Box<dyn Expr>,
+}
+
+impl Default for EmigrateImmigrate {
+    fn default() -> Self {
+        Self {
+            expr: Box::new(
+                SequenceExpr::word_set(&[
+                        "emigrate", "immigrate",
+                        "emigrated", "immigrated",
+                        "emigrates", "immigrates",
+                        "emigrating", "immigrating",
+                        "emigration", "immigration",
+                    ])
+                    .t_ws()
+                    .then_preposition(),
+            ),
+        }
+    }
+}
+
+impl ExprLinter for EmigrateImmigrate {
+    type Unit = Chunk;
+
+    fn expr(&self) -> &dyn Expr {
+        self.expr.as_ref()
+    }
+
+    fn match_to_lint(&self, toks: &[Token], _src: &[char]) -> Option<Lint> {
+        Some(Lint {
+            span: toks.span()?,
+            ..Default::default()
+        })
+    }
+
+    fn description(&self) -> &str {
+        "Corrects "
+    }
+}

harper-core/src/linting/lint_group.rs

@@ -53,6 +53,7 @@ use super::double_click::DoubleClick;
 use super::double_modal::DoubleModal;
 use super::ellipsis_length::EllipsisLength;
 use super::else_possessive::ElsePossessive;
+use super::emigrate_immigrate::EmigrateImmigrate;
 use super::everyday::Everyday;
 use super::expand_memory_shorthands::ExpandMemoryShorthands;
 use super::expand_time_shorthands::ExpandTimeShorthands;
@@ -517,6 +518,7 @@ impl LintGroup {
         insert_expr_rule!(DoubleModal, true);
         insert_struct_rule!(EllipsisLength, true);
         insert_expr_rule!(ElsePossessive, true);
+        insert_expr_rule!(EmigrateImmigrate, true);
         insert_expr_rule!(Everyday, true);
         insert_expr_rule!(ExpandMemoryShorthands, true);
         insert_expr_rule!(ExpandTimeShorthands, true);

harper-core/src/linting/mod.rs

@@ -48,6 +48,7 @@ mod double_click;
 mod double_modal;
 mod ellipsis_length;
 mod else_possessive;
+mod emigrate_immigrate;
 mod everyday;
 mod expand_memory_shorthands;
 mod expand_time_shorthands;