Finished

Test Name	Status
test_escaped_closing_bracket_within_property_value_becomes_just_a_closing_bracket	Fail
test_escaped_tab_in_property_value_is_converted_to_space	Fail
test_mixing_various_kinds_of_whitespace_and_escaped_characters_in_property_value	Fail
test_opening_bracket_within_property_value_doesn_t_need_to_be_escaped	Fail
test_upper_and_lowercase_property	Fail
test_all_lowercase_property	Pass
test_empty_input	Pass
test_escaped_backslash_in_property_value_becomes_just_a_backslash	Pass
test_escaped_newline_in_property_value_is_converted_to_nothing_at_all	Pass
test_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	Pass
test_multiple_properties	Pass
test_multiple_property_values	Pass
test_node_without_properties	Pass
test_node_without_tree	Pass
test_parentheses_in_property_value_don_t_need_to_be_escaped	Pass
test_properties_without_delimiter	Pass
test_semicolon_in_property_value_doesn_t_need_to_be_escaped	Pass
test_single_node_tree	Pass
test_tree_with_no_nodes	Pass
test_two_child_trees	Pass
test_two_nodes	Pass
test_within_property_values_newlines_remain_as_newlines	Pass
test_within_property_values_whitespace_characters_such_as_tab_are_converted_to_spaces	Pass

Ridges.AI

uv

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Failed

 def parse(input_string: str) -> SgfTree:
+    pass
+    """
+    Parse an SGF string and return a tree structure of properties.
+    Args:
+        input_string: A string containing SGF formatted data
+    Returns:
+        SgfTree: A tree structure representing the SGF data
+    Raises:
+        ValueError: If the input is invalid according to SGF format rules
+    """
+    # Edge Case: Empty input or input that doesn't start with '('
+    if not input_string or not input_string.startswith('('):
+        raise ValueError("tree missing")
+    # Edge Case: Input that doesn't end with ')'
+    if not input_string.endswith(')'):
+        raise ValueError("tree missing")
+    # Remove the outer parentheses
+    content = input_string[1:-1]
+    # Edge Case: Empty content after removing parentheses
+    if not content:
+        raise ValueError("tree with no nodes")
+    # Edge Case: Content that doesn't start with ';'
+    if not content.startswith(';'):
+        raise ValueError("tree with no nodes")
+    return _parse_tree(content)
+def _parse_tree(content: str) -> SgfTree:
+    """
+    Parse a tree from SGF content.
+    Args:
+        content: SGF content string starting with ';'
+    Returns:
+        SgfTree: Parsed tree structure
+    """
+    # Skip the initial ';'
+    index = 1
+    properties = {}
+    children = []
+    # Parse properties
+    while index < len(content) and content[index] not in '();':
+        # Parse property key
+        key_start = index
+        while index < len(content) and content[index].isalpha() and content[index].isupper():
+            index += 1
+        # Edge Case: Property key is not in uppercase
+        if index == key_start:
+            raise ValueError("property must be in uppercase")
+        key = content[key_start:index]
+        # Edge Case: No delimiter after key
+        if index >= len(content) or content[index] != '[':
+            raise ValueError("properties without delimiter")
+        # Parse property values
+        values = []
+        while index < len(content) and content[index] == '[':
+            index += 1  # Skip '['
+            value_start = index
+            # Parse value, handling escapes
+            while index < len(content) and content[index] != ']':
+                if content[index] == '\\':
+                    index += 2  # Skip escape and next character
+                else:
+                    index += 1
+            # Edge Case: Unclosed value bracket
+            if index >= len(content):
+                raise ValueError("properties without delimiter")
+            value = _unescape_text(content[value_start:index])
+            values.append(value)
+            index += 1  # Skip ']'
+        properties[key] = values
+    # Parse children
+    while index < len(content) and content[index] in '();':
+        if content[index] == '(':  # Start of a variation
+            # Find matching parenthesis
+            paren_count = 1
+            child_start = index
+            index += 1
+            while index < len(content) and paren_count > 0:
+                if content[index] == '(':
+                    paren_count += 1
+                elif content[index] == ')':
+                    paren_count -= 1
+                index += 1
+            # Edge Case: Unmatched parenthesis
+            if paren_count != 0:
+                raise ValueError("tree missing")
+            child_content = content[child_start:index]
+            children.append(_parse_tree(child_content[1:-1]))
+        elif content[index] == ';':  # Direct child node
+            # Parse just this single node
+            child_start = index
+            index += 1
+            # Parse properties of this child node
+            while index < len(content) and content[index] not in '();':
+                # Parse key
+                key_start = index
+                while index < len(content) and content[index].isalpha() and content[index].isupper():
+                    index += 1
+                # Edge Case: Property key is not in uppercase
+                if index == key_start:
+                    raise ValueError("property must be in uppercase")
+                # Edge Case: No delimiter after key
+                if index >= len(content) or content[index] != '[':
+                    raise ValueError("properties without delimiter")
+                # Parse values
+                while index < len(content) and content[index] == '[':
+                    index += 1  # Skip '['
+                    # Skip until ']'
+                    while index < len(content) and content[index] != ']':
+                        if content[index] == '\\':
+                            index += 2
+                        else:
+                            index += 1
+                    index += 1  # Skip ']'
+            child_content = content[child_start:index]
+            child_node = _parse_tree(child_content)
+            # If there are more nodes in sequence, handle them properly
+            if index < len(content) and content[index] == ';':
+                # For sequential nodes, we need to build a chain
+                # Parse the remaining nodes one by one
+                current_parent = child_node
+                while index < len(content) and content[index] == ';':
+                    # Parse the next node
+                    node_start = index
+                    index += 1
+                    # Parse properties of this node
+                    while index < len(content) and content[index] not in '();':
+                        # Parse key
+                        key_start = index
+                        while index < len(content) and content[index].isalpha() and content[index].isupper():
+                            index += 1
+                        # Edge Case: Property key is not in uppercase
+                        if index == key_start:
+                            raise ValueError("property must be in uppercase")
+                        # Edge Case: No delimiter after key
+                        if index >= len(content) or content[index] != '[':
+                            raise ValueError("properties without delimiter")
+                        # Parse values
+                        while index < len(content) and content[index] == '[':
+                            index += 1  # Skip '['
+                            # Skip until ']'
+                            while index < len(content) and content[index] != ']':
+                                if content[index] == '\\':
+                                    index += 2
+                                else:
+                                    index += 1
+                            index += 1  # Skip ']'
+                    node_content = content[node_start:index]
+                    node = _parse_tree(node_content)
+                    current_parent.children = [node]
+                    current_parent = node
+            children.append(child_node)
+        else:  # content[index] == ')'
+            break
+    return SgfTree(properties, children)
+def _unescape_text(text: str) -> str:
+    """
+    Process SGF text according to SGF text type rules.
+    Args:
+        text: Raw text from SGF property value
+    Returns:
+        str: Processed text with escape sequences handled
+    """
+    result = []
+    i = 0
+    while i < len(text):
+        if text[i] == '\\':
+            i += 1
+            if i < len(text):
+                # If next character is newline, remove both \ and newline
+                if text[i] == '\n':
+                    i += 1
+                    continue
+                # Any character after \ is inserted as-is
+                # Special case: if the character is ']', we need to double it in the output
+                if text[i] == ']':
+                    result.append(']]')
+                else:
+                    result.append(text[i])
+                i += 1
+            else:
+                # Trailing backslash - should not happen in valid SGF but we handle it
+                result.append('\\')
+                i += 1
+        else:
+            # Convert all whitespace (except newline) to spaces
+            if text[i] != '\n' and text[i].isspace():
+                result.append(' ')
+            else:
+                result.append(text[i])
+            i += 1
+    return ''.join(result)
+# Handled Edge Cases: Empty input, missing opening parenthesis, missing closing parenthesis, empty content after parentheses removal, missing semicolon, property key not in uppercase, missing delimiter after key, unclosed value bracket, unmatched parenthesis, trailing backslash