Merge #2615

2615: Fix wrong path parsing for macro call in pattern position r=edwin0cheng a=edwin0cheng

The parser incorrectly insert a `PathPat` inside `MacroCall` syntax node when parsing inside a pattern position, for example : 

```rust
let foo!() = 0;
```

become:

```
 MACRO_CALL@[60; 66)
    PATH_PAT@[60; 63)     <------------- It should not exist
      PATH@[60; 63)
        PATH_SEGMENT@[60; 63)
          NAME_REF@[60; 63)
            IDENT@[60; 63) "foo"
    EXCL@[63; 64) "!"
    TOKEN_TREE@[64; 66)
      L_PAREN@[64; 65) "("
      R_PAREN@[65; 66) ")"
```

This PR fix this bug and add some test to make sure goto-defintion works for macro inside pattern.


Co-authored-by: Edwin Cheng <[email protected]>

1 files changed, 4 insertions, 5 deletions

diff --git a/crates/ra_syntax/test_data/parser/inline/ok/0129_marco_pat.txt b/crates/ra_syntax/test_data/parser/inline/ok/0129_marco_pat.txt
index 4a714ad6b..b05ccc0ed 100644
--- a/crates/ra_syntax/test_data/parser/inline/ok/0129_marco_pat.txt
+++ b/crates/ra_syntax/test_data/parser/inline/ok/0129_marco_pat.txt
@@ -16,11 +16,10 @@ SOURCE_FILE@[0; 33)
           LET_KW@[16; 19) "let"
           WHITESPACE@[19; 20) " "
           MACRO_CALL@[20; 25)
-            PATH_PAT@[20; 21)
-              PATH@[20; 21)
-                PATH_SEGMENT@[20; 21)
-                  NAME_REF@[20; 21)
-                    IDENT@[20; 21) "m"
+            PATH@[20; 21)
+              PATH_SEGMENT@[20; 21)
+                NAME_REF@[20; 21)
+                  IDENT@[20; 21) "m"
             EXCL@[21; 22) "!"
             TOKEN_TREE@[22; 25)
               L_PAREN@[22; 23) "("