feat(version-scanner): implement targeted namespaced ignore pragmas

Author: chalmerlowe

scripts/version_scanner/tests/unit/test_version_scanner.py

@@ -148,6 +148,38 @@ def test_scan_file_ignores_pragma(tmp_path):
     results = scan_file(str(test_file), rules)
     assert len(results) == 0
 
+
+def test_scan_file_ignores_targeted_pragma(tmp_path):
+    test_file = tmp_path / "test.py"
+    test_file.write_text("python_requires = '>=3.7'  # version-scanner: ignore-rule=python_requires_check:3.7\n")
+    
+    rules = [
+        {
+            "name": "python_requires_check", 
+            "pattern": re.compile(r"python_requires\s*=\s*['\"]>=3\.7['\"]"),
+            "version": "3.7"
+        }
+    ]
+    
+    results = scan_file(str(test_file), rules)
+    assert len(results) == 0
+
+
+def test_scan_file_does_not_ignore_mismatched_targeted_pragma(tmp_path):
+    test_file = tmp_path / "test.py"
+    test_file.write_text("python_requires = '>=3.7'  # version-scanner: ignore-rule=python_requires_check:3.8\n")
+    
+    rules = [
+        {
+            "name": "python_requires_check", 
+            "pattern": re.compile(r"python_requires\s*=\s*['\"]>=3\.7['\"]"),
+            "version": "3.7"
+        }
+    ]
+    
+    results = scan_file(str(test_file), rules)
+    assert len(results) == 1
+
 def test_scan_file_ignores_next_line(tmp_path):
     test_file = tmp_path / "test.py"
     test_file.write_text("# version-scanner: ignore-next-line\npython_requires = '>=3.7'\n")

scripts/version_scanner/version_scanner.py

@@ -214,11 +214,16 @@ def scan_file(file_path: str, compiled_rules: List[Dict[str, re.Pattern]]) -> Li
                 if "version-scanner: ignore-next-line" in line:
                     skip_next = True
                     continue
-                if "version-scanner: ignore" in line:
+                if "version-scanner: ignore" in line and "version-scanner: ignore-rule" not in line and "version-scanner: ignore-next-line" not in line:
                     continue
                 for rule in compiled_rules:
                     match = rule["pattern"].search(line)
                     if match:
+                        version = rule.get("version")
+                        if version:
+                            pragma_pattern = rf"version-scanner\s*:\s*ignore-rule\s*=\s*{re.escape(rule['name'])}\s*:\s*{re.escape(version)}"
+                            if re.search(pragma_pattern, line, re.IGNORECASE):
+                                continue
                         results.append({
                             "rule_name": rule["name"],
                             "line_number": line_num,