Finished

Test Name	Status
test_escaped_newline_in_property_value_is_converted_to_nothing_at_all	Fail
test_mixing_various_kinds_of_whitespace_and_escaped_characters_in_property_value	Fail
test_all_lowercase_property	Pass
test_empty_input	Pass
test_escaped_backslash_in_property_value_becomes_just_a_backslash	Pass
test_escaped_closing_bracket_within_property_value_becomes_just_a_closing_bracket	Pass
test_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	Pass
test_escaped_tab_in_property_value_is_converted_to_space	Pass
test_multiple_properties	Pass
test_multiple_property_values	Pass
test_node_without_properties	Pass
test_node_without_tree	Pass
test_opening_bracket_within_property_value_doesn_t_need_to_be_escaped	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_upper_and_lowercase_property	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

weekends

Pending

Initializing Agent

Running Agent

Initializing Evaluation

Running Evaluation

Failed

 def parse(input_string: str) -> SgfTree:
+    pass
+    """
+    Parse an SGF (Smart Game Format) 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 string is malformed or doesn't conform to SGF format
+    """
+    # Edge Case: Empty input string
+    if not input_string:
+        raise ValueError("tree missing")
+    # Edge Case: Input doesn't start with '('
+    if not input_string.startswith('('):
+        raise ValueError("tree missing")
+    # Edge Case: Input 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 tree with no nodes
+    if not content:
+        raise ValueError("tree with no nodes")
+    # Edge Case: Tree doesn't start with ';'
+    if not content.startswith(';'):
+        raise ValueError("tree missing")
+    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():
+            if not content[index].isupper():
+                raise ValueError("property must be in uppercase")
+            index += 1
+        # Edge Case: Property key is empty
+        if index == key_start:
+            raise ValueError("properties without delimiter")
+        key = content[key_start:index]
+        # Parse property values
+        values = []
+        while index < len(content) and content[index] == '[':
+            index += 1  # Skip '['
+            value_start = index
+            # Parse value, handling escapes
+            value_chars = []
+            while index < len(content) and content[index] != ']':
+                if content[index] == '\\':
+                    index += 1  # Skip escape character
+                    # Make sure we don't go out of bounds
+                    if index < len(content):
+                        # If the next character is ], it's an escaped closing bracket
+                        if content[index] == ']':
+                            value_chars.append(']')  # Add the escaped ] as just ]
+                            index += 1  # Skip the ]
+                        else:
+                            # Any other character after backslash is inserted as-is
+                            value_chars.append(content[index])
+                            index += 1  # Skip escaped character
+                    else:
+                        # Handle escape at end of string
+                        break
+                else:
+                    value_chars.append(content[index])
+                    index += 1
+            # Edge Case: Unclosed property value
+            if index >= len(content):
+                raise ValueError("properties without delimiter")
+            # Edge Case: Missing closing bracket
+            if content[index] != ']':
+                raise ValueError("properties without delimiter")
+            value = _parse_text_value(''.join(value_chars))
+            values.append(value)
+            index += 1  # Skip ']'
+        # Edge Case: Property has no values
+        if not values:
+            raise ValueError("properties without delimiter")
+        properties[key] = values
+    # Parse children
+    while index < len(content) and content[index] in '();':
+        if content[index] == '(':  # Start of a subtree
+            # Find matching closing parenthesis
+            paren_count = 1
+            subtree_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")
+            subtree_content = content[subtree_start:index]
+            children.append(_parse_tree(subtree_content[1:-1]))
+        elif content[index] == ';':  # Another node in the same sequence
+            # Parse the rest as a child node
+            node_end = index + 1
+            paren_count = 0
+            # Find the end of this node
+            while node_end < len(content):
+                if content[node_end] == '(':
+                    paren_count += 1
+                elif content[node_end] == ')':
+                    if paren_count == 0:
+                        break
+                    paren_count -= 1
+                elif content[node_end] == ';' and paren_count == 0:
+                    break
+                node_end += 1
+            node_content = content[index:node_end]
+            children.append(_parse_tree(node_content))
+            index = node_end
+        else:
+            index += 1
+    return SgfTree(properties, children)
+def _parse_text_value(value: str) -> str:
+    """
+    Parse an SGF text value, handling escape sequences and whitespace.
+    Args:
+        value: Raw text value from SGF
+    Returns:
+        str: Processed text value
+    """
+    result = []
+    i = 0
+    while i < len(value):
+        if value[i] == '\\':  # Escape character
+            i += 1
+            # Edge Case: Escape at end of string
+            if i >= len(value):
+                result.append('\\')
+                break
+            char = value[i]
+            # If next character is newline, remove the backslash and newline
+            if char == '\n':
+                i += 1
+                continue
+            # Any other character after backslash is inserted as-is
+            else:
+                result.append(char)
+                i += 1
+        elif value[i] == '\n':  # Preserve newlines
+            result.append('\n')
+            i += 1
+        elif value[i] in ' \t\f\v\r':  # Whitespace characters (except newline)
+            result.append(' ')
+            i += 1
+        else:
+            result.append(value[i])
+            i += 1
+    return ''.join(result)
+# Handled Edge Cases: Empty input string, Input doesn't start with '(', Input doesn't end with ')', Empty tree with no nodes, Tree doesn't start with ';', Property key is empty, Property key is not in uppercase, Unclosed property value, Missing closing bracket, Property has no values, Unmatched parenthesis, Escape at end of string