G: pointer types

grammar.ron

@@ -105,6 +105,7 @@ Grammar(
         "TUPLE_TYPE",
         "NEVER_TYPE",
         "PATH_TYPE",
+        "POINTER_TYPE",
 
         "EXTERN_BLOCK",
         "ENUM_VARIANT",

src/parser/grammar/types.rs

@@ -4,6 +4,7 @@ pub(super) fn type_(p: &mut Parser) {
     match p.current() {
         L_PAREN => paren_or_tuple_type(p),
         EXCL => never_type(p),
+        STAR => pointer_type(p),
         IDENT => path_type(p),
         _ => {
             p.error("expected type");
@@ -11,6 +12,10 @@ pub(super) fn type_(p: &mut Parser) {
     }
 }
 
+fn type_no_plus(p: &mut Parser) {
+    type_(p);
+}
+
 fn paren_or_tuple_type(p: &mut Parser) {
     assert!(p.at(L_PAREN));
     let m = p.start();
@@ -53,6 +58,30 @@ fn never_type(p: &mut Parser) {
     m.complete(p, NEVER_TYPE);
 }
 
+fn pointer_type(p: &mut Parser) {
+    assert!(p.at(STAR));
+    let m = p.start();
+    p.bump();
+
+    match p.current() {
+        // test pointer_type_mut
+        // type M = *mut ();
+        // type C = *mut ();
+        MUT_KW | CONST_KW => p.bump(),
+        _ => {
+            // test pointer_type_no_mutability
+            // type T = *();
+            p.error(
+                "expected mut or const in raw pointer type \
+                (use `*mut T` or `*const T` as appropriate)"
+            );
+        }
+    };
+
+    type_no_plus(p);
+    m.complete(p, POINTER_TYPE);
+}
+
 fn path_type(p: &mut Parser) {
     assert!(p.at(IDENT));
     let m = p.start();

src/syntax_kinds.rs

@@ -103,6 +103,7 @@ pub enum SyntaxKind {
     TUPLE_TYPE,
     NEVER_TYPE,
     PATH_TYPE,
+    POINTER_TYPE,
     EXTERN_BLOCK,
     ENUM_VARIANT,
     NAMED_FIELD,
@@ -232,6 +233,7 @@ impl SyntaxKind {
             TUPLE_TYPE => &SyntaxInfo { name: "TUPLE_TYPE" },
             NEVER_TYPE => &SyntaxInfo { name: "NEVER_TYPE" },
             PATH_TYPE => &SyntaxInfo { name: "PATH_TYPE" },
+            POINTER_TYPE => &SyntaxInfo { name: "POINTER_TYPE" },
             EXTERN_BLOCK => &SyntaxInfo { name: "EXTERN_BLOCK" },
             ENUM_VARIANT => &SyntaxInfo { name: "ENUM_VARIANT" },
             NAMED_FIELD => &SyntaxInfo { name: "NAMED_FIELD" },

tests/data/parser/inline/0021_pointer_type_no_mutability.rs

@@ -0,0 +1 @@
+type T = *();

tests/data/parser/inline/0021_pointer_type_no_mutability.txt

@@ -0,0 +1,17 @@
+FILE@[0; 14)
+  TYPE_ITEM@[0; 14)
+    TYPE_KW@[0; 4)
+    NAME@[4; 7)
+      WHITESPACE@[4; 5)
+      IDENT@[5; 6) "T"
+      WHITESPACE@[6; 7)
+    EQ@[7; 8)
+    POINTER_TYPE@[8; 12)
+      WHITESPACE@[8; 9)
+      STAR@[9; 10)
+      err: `expected mut or const in raw pointer type (use `*mut T` or `*const T` as appropriate)`
+      TUPLE_TYPE@[10; 12)
+        L_PAREN@[10; 11)
+        R_PAREN@[11; 12)
+    SEMI@[12; 13)
+    WHITESPACE@[13; 14)

tests/data/parser/inline/0022_pointer_type_mut.rs

@@ -0,0 +1,2 @@
+type M = *mut ();
+type C = *mut ();

tests/data/parser/inline/0022_pointer_type_mut.txt

@@ -0,0 +1,35 @@
+FILE@[0; 36)
+  TYPE_ITEM@[0; 18)
+    TYPE_KW@[0; 4)
+    NAME@[4; 7)
+      WHITESPACE@[4; 5)
+      IDENT@[5; 6) "M"
+      WHITESPACE@[6; 7)
+    EQ@[7; 8)
+    POINTER_TYPE@[8; 16)
+      WHITESPACE@[8; 9)
+      STAR@[9; 10)
+      MUT_KW@[10; 13)
+      TUPLE_TYPE@[13; 16)
+        WHITESPACE@[13; 14)
+        L_PAREN@[14; 15)
+        R_PAREN@[15; 16)
+    SEMI@[16; 17)
+    WHITESPACE@[17; 18)
+  TYPE_ITEM@[18; 36)
+    TYPE_KW@[18; 22)
+    NAME@[22; 25)
+      WHITESPACE@[22; 23)
+      IDENT@[23; 24) "C"
+      WHITESPACE@[24; 25)
+    EQ@[25; 26)
+    POINTER_TYPE@[26; 34)
+      WHITESPACE@[26; 27)
+      STAR@[27; 28)
+      MUT_KW@[28; 31)
+      TUPLE_TYPE@[31; 34)
+        WHITESPACE@[31; 32)
+        L_PAREN@[32; 33)
+        R_PAREN@[33; 34)
+    SEMI@[34; 35)
+    WHITESPACE@[35; 36)

tests/testutils/src/lib.rs

@@ -26,21 +26,20 @@ where
     F: Fn(&str) -> String,
 {
     for path in collect_tests(paths) {
-        let actual = {
+        let input_code = read_text(&path);
-            let text = read_text(&path);
+        let parse_tree = f(&input_code);
-            f(&text)
-        };
         let path = path.with_extension("txt");
         if !path.exists() {
             println!("\nfile: {}", path.display());
-            println!("No .txt file with expected result, creating...");
+            println!("No .txt file with expected result, creating...\n");
-            file::put_text(&path, actual).unwrap();
+            println!("{}\n{}", input_code, parse_tree);
+            file::put_text(&path, parse_tree).unwrap();
             panic!("No expected result")
         }
         let expected = read_text(&path);
         let expected = expected.as_str();
-        let actual = actual.as_str();
+        let parse_tree = parse_tree.as_str();
-        assert_equal_text(expected, actual, &path);
+        assert_equal_text(expected, parse_tree, &path);
     }
 }