Merge #68

68: Implement incremental reparsing for remaining braced blocks r=matklad a=darksv

Fixes #66

Co-authored-by: darksv <darek969-12@o2.pl>

crates/libsyntax2/src/grammar/expressions/atom.rs

@@ -287,7 +287,7 @@ fn match_expr(p: &mut Parser) -> CompletedMarker {
     m.complete(p, MATCH_EXPR)
 }
 
-fn match_arm_list(p: &mut Parser) {
+pub(crate) fn match_arm_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.eat(L_CURLY);

crates/libsyntax2/src/grammar/expressions/mod.rs

@@ -2,6 +2,7 @@ mod atom;
 
 use super::*;
 pub(super) use self::atom::{literal, LITERAL_FIRST};
+pub(crate) use self::atom::match_arm_list;
 
 const EXPR_FIRST: TokenSet = LHS_FIRST;
 
@@ -419,7 +420,7 @@ fn path_expr(p: &mut Parser, r: Restrictions) -> CompletedMarker {
 //     S { x, y: 32, };
 //     S { x, y: 32, ..Default::default() };
 // }
-fn named_field_list(p: &mut Parser) {
+pub(crate) fn named_field_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();

crates/libsyntax2/src/grammar/items/mod.rs

@@ -5,7 +5,12 @@ mod traits;
 mod use_item;
 
 use super::*;
-pub(crate) use self::nominal::named_field_def_list;
+pub(crate) use self::{
+    expressions::{named_field_list, match_arm_list},
+    nominal::{enum_variant_list, named_field_def_list},
+    traits::{trait_item_list, impl_item_list},
+    use_item::use_tree_list,
+};
 
 // test mod_contents
 // fn foo() {}
@@ -223,7 +228,7 @@ fn extern_crate_item(p: &mut Parser) {
     p.expect(SEMI);
 }
 
-fn extern_item_list(p: &mut Parser) {
+pub(crate) fn extern_item_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();
@@ -295,7 +300,7 @@ fn type_def(p: &mut Parser) {
     p.expect(SEMI);
 }
 
-fn mod_item(p: &mut Parser) {
+pub(crate) fn mod_item(p: &mut Parser) {
     assert!(p.at(MOD_KW));
     p.bump();
 
@@ -307,7 +312,7 @@ fn mod_item(p: &mut Parser) {
     }
 }
 
-fn mod_item_list(p: &mut Parser) {
+pub(crate) fn mod_item_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();
@@ -343,7 +348,7 @@ pub(super) fn macro_call_after_excl(p: &mut Parser) -> BlockLike {
     flavor
 }
 
-pub(super) fn token_tree(p: &mut Parser) {
+pub(crate) fn token_tree(p: &mut Parser) {
     let closing_paren_kind = match p.current() {
         L_CURLY => R_CURLY,
         L_PAREN => R_PAREN,

crates/libsyntax2/src/grammar/items/nominal.rs

@@ -51,7 +51,7 @@ pub(super) fn enum_def(p: &mut Parser) {
     }
 }
 
-fn enum_variant_list(p: &mut Parser) {
+pub(crate) fn enum_variant_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();

crates/libsyntax2/src/grammar/items/traits.rs

@@ -25,7 +25,7 @@ pub(super) fn trait_def(p: &mut Parser) {
 //     fn foo() {}
 //     fn bar(&self);
 // }
-fn trait_item_list(p: &mut Parser) {
+pub(crate) fn trait_item_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();
@@ -74,7 +74,7 @@ pub(super) fn impl_item(p: &mut Parser) {
 //     fn foo() {}
 //     fn bar(&self) {}
 // }
-fn impl_item_list(p: &mut Parser) {
+pub(crate) fn impl_item_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();

crates/libsyntax2/src/grammar/items/use_item.rs

@@ -53,7 +53,7 @@ fn use_tree(p: &mut Parser) {
     m.complete(p, USE_TREE);
 }
 
-fn use_tree_list(p: &mut Parser) {
+pub(crate) fn use_tree_list(p: &mut Parser) {
     assert!(p.at(L_CURLY));
     let m = p.start();
     p.bump();

crates/libsyntax2/src/grammar/mod.rs

@@ -37,8 +37,21 @@ use {
     SyntaxKind::{self, *},
 };
 pub(crate) use self::{
-    expressions::block,
-    items::named_field_def_list,
+    expressions::{
+        block,
+    },
+    items::{
+        enum_variant_list,
+        extern_item_list,
+        impl_item_list,
+        match_arm_list,
+        mod_item_list,
+        named_field_def_list,
+        named_field_list,
+        token_tree,
+        trait_item_list,
+        use_tree_list,
+    },
 };
 
 pub(crate) fn root(p: &mut Parser) {

crates/libsyntax2/src/lib.rs

@@ -144,6 +144,21 @@ fn find_reparsable_node(node: SyntaxNodeRef, range: TextRange) -> Option<(Syntax
         let res = match node.kind() {
             BLOCK => grammar::block,
             NAMED_FIELD_DEF_LIST => grammar::named_field_def_list,
+            NAMED_FIELD_LIST => grammar::named_field_list,
+            ENUM_VARIANT_LIST => grammar::enum_variant_list,
+            MATCH_ARM_LIST => grammar::match_arm_list,
+            USE_TREE_LIST => grammar::use_tree_list,
+            EXTERN_ITEM_LIST => grammar::extern_item_list,
+            TOKEN_TREE if node.first_child().unwrap().kind() == L_CURLY => grammar::token_tree,
+            ITEM_LIST => {
+                let parent = node.parent().unwrap();
+                match parent.kind() {
+                    IMPL_ITEM => grammar::impl_item_list,
+                    TRAIT_DEF => grammar::trait_item_list,
+                    MODULE => grammar::mod_item_list,
+                    _ => return None,
+                }
+            },
             _ => return None,
         };
         Some(res)

crates/libsyntax2/tests/test/main.rs

@@ -23,21 +23,6 @@ fn lexer_tests() {
     })
 }
 
-#[test]
-fn parser_tests() {
-    dir_tests(&["parser/inline", "parser/ok", "parser/err"], |text| {
-        let file = File::parse(text);
-        dump_tree(file.syntax())
-    })
-}
-
-#[test]
-fn parser_fuzz_tests() {
-    for (_, text) in collect_tests(&["parser/fuzz-failures"]) {
-        check_fuzz_invariants(&text)
-    }
-}
-
 #[test]
 fn reparse_test() {
     fn do_check(before: &str, replace_with: &str) {
@@ -73,6 +58,57 @@ fn foo {
     <|>92<|>;
 }
 ", "62");
+    do_check(r"
+mod foo {
+    fn <|><|>
+}
+", "bar");
+    do_check(r"
+trait Foo {
+    type <|>Foo<|>;
+}
+", "Output");
+    do_check(r"
+impl IntoIterator<Item=i32> for Foo {
+    f<|><|>
+}
+", "n next(");
+    do_check(r"
+use a::b::{foo,<|>,bar<|>};
+    ", "baz");
+    do_check(r"
+pub enum A {
+    Foo<|><|>
+}
+", "\nBar;\n");
+    do_check(r"
+foo!{a, b<|><|> d}
+", ", c[3]");
+    do_check(r"
+fn foo() {
+    vec![<|><|>]
+}
+", "123");
+    do_check(r"
+extern {
+    fn<|>;<|>
+}
+", " exit(code: c_int)");
+}
+
+#[test]
+fn parser_tests() {
+    dir_tests(&["parser/inline", "parser/ok", "parser/err"], |text| {
+        let file = File::parse(text);
+        dump_tree(file.syntax())
+    })
+}
+
+#[test]
+fn parser_fuzz_tests() {
+    for (_, text) in collect_tests(&["parser/fuzz-failures"]) {
+        check_fuzz_invariants(&text)
+    }
 }