allow dollar in symbol names

Author: emanspeaks

fortls/parsers/internal/parser.py

@@ -2045,9 +2045,9 @@ def replace_defined(line: str):
             out_line = ""
             for match in FRegex.DEFINED.finditer(line):
                 if match.group(1) in defs:
-                    out_line += line[i0 : match.start(0)] + "($@)"
+                    out_line += line[i0 : match.start(0)] + "(@$@)"
                 else:
-                    out_line += line[i0 : match.start(0)] + "($%)"
+                    out_line += line[i0 : match.start(0)] + "(%$%)"
                 i0 = match.end(0)
             if i0 < len(line):
                 out_line += line[i0:]
@@ -2064,8 +2064,8 @@ def replace_vars(line: str):
                 i0 = match.end(0)
             if i0 < len(line):
                 out_line += line[i0:]
-            out_line = out_line.replace("$@", "True")
-            out_line = out_line.replace("$%", "False")
+            out_line = out_line.replace("@$@", "True")
+            out_line = out_line.replace("%$%", "False")
             return out_line
 
         if defs is None:

fortls/regex_patterns.py

@@ -98,7 +98,7 @@ class FortranRegularExpressions:
         r"[ ]*,[ ]*(PUBLIC|PRIVATE|ABSTRACT|EXTENDS\(\w*\))", I
     )
     VIS: Pattern = compile(r"[ ]*\b(PUBLIC|PRIVATE)\b", I)
-    WORD: Pattern = compile(r"[a-z_]\w*", I)
+    WORD: Pattern = compile(r"[a-z_][\w\$]*", I)
     NUMBER: Pattern = compile(
         r"[\+\-]?(\b\d+\.?\d*|\.\d+)(_\w+|d[\+\-]?\d+|e[\+\-]?\d+(_\w+)?)?(?!\w)",
         I,
@@ -146,7 +146,7 @@ class FortranRegularExpressions:
     # Object regex patterns
     CLASS_VAR: Pattern = compile(r"(TYPE|CLASS)[ ]*\(", I)
     DEF_KIND: Pattern = compile(r"(\w*)[ ]*\((?:KIND|LEN)?[ =]*(\w*)", I)
-    OBJBREAK: Pattern = compile(r"[\/\-(.,+*<>=$: ]", I)
+    OBJBREAK: Pattern = compile(r"[\/\-(.,+*<>=: ]", I)
 
 
 # TODO: use this in the main code

test/test_server_hover.py

@@ -70,6 +70,17 @@ def test_hover_parameter():
     validate_hover(results, ref_results)
 
 
+def test_hover_parameter_dollar():
+    """Test that hover parameters with dollar in name are recognized correctly"""
+    string = write_rpc_request(1, "initialize", {"rootPath": str(test_dir)})
+    file_path = test_dir / "hover" / "parameters.f90"
+    string += hover_req(file_path, 20, 31)
+    errcode, results = run_request(string, fortls_args=["--sort_keywords"])
+    assert errcode == 0
+    ref_results = ["```fortran90\nINTEGER(4), PARAMETER :: SIG$ERR = -1\n```"]
+    validate_hover(results, ref_results)
+
+
 def test_hover_parameter_eqnospace():
     """Test that hover parameters display value correctly"""
     string = write_rpc_request(1, "initialize", {"rootPath": str(test_dir)})

test/test_source/hover/parameters.f90

@@ -18,4 +18,5 @@ program params
     INTEGER, PARAMETER :: var_multi2 = 1 *   &
                                         23 + &
                                         2 /1        ! comment
+    INTEGER(4), PARAMETER :: SIG$ERR   = -1
 end program params