Finished

Test Name	Status
test_escaped_backslash_in_property_value_becomes_just_a_backslash	Fail
test_escaped_closing_bracket_within_property_value_becomes_just_a_closing_bracket	Fail
test_escaped_newline_in_property_value_is_converted_to_nothing_at_all	Fail
test_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	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_all_lowercase_property	Pass
test_empty_input	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_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

A.2.1

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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 malformed or doesn't conform to SGF format
+    """
+    # Edge Case: Empty input or only whitespace
+    if not input_string or input_string.isspace():
+        raise ValueError("tree missing")
+    # Edge Case: Doesn't start with '('
+    if not input_string.startswith('('):
+        raise ValueError("tree missing")
+    # Edge Case: 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 doesn't start with ';'
+    if not content.startswith(';'):
+        raise ValueError("tree missing")
+    return _parse_tree(content)
+def _parse_tree(content: str) -> SgfTree:
+    """
+    Parse the content of a tree (without the outer parentheses).
+    Args:
+        content: The content inside the outer parentheses
+    Returns:
+        SgfTree: A tree structure representing the SGF data
+    """
+    # Skip the initial ';'
+    index = 1
+    # Parse properties of the root node
+    properties, index = _parse_properties(content, index)
+    # Parse children
+    children = []
+    while index < len(content):
+        if content[index] == '(':  # Start of a child tree
+            child_tree, index = _parse_subtree(content, index)
+            children.append(child_tree)
+        else:
+            # If we encounter a ';' not inside parentheses, it's a sibling node
+            # This means the current node has siblings, which should be treated as children
+            if content[index] == ';':
+                # Parse the sibling as a new child
+                sibling_content = content[index:]
+                sibling_tree = _parse_tree(sibling_content)
+                children.append(sibling_tree)
+                break
+            else:
+                index += 1
+    return SgfTree(properties, children)
+def _parse_subtree(content: str, start_index: int) -> tuple[SgfTree, int]:
+    """
+    Parse a subtree starting from a given index.
+    Args:
+        content: The content to parse
+        start_index: The index where the subtree starts (at '(')
+    Returns:
+        tuple: A tuple containing the parsed SgfTree and the index after the subtree
+    """
+    # Edge Case: Not starting with '('
+    if content[start_index] != '(':
+        raise ValueError("tree missing")
+    # Find the matching closing parenthesis
+    depth = 1
+    index = start_index + 1
+    while index < len(content) and depth > 0:
+        if content[index] == '(':
+            depth += 1
+        elif content[index] == ')':
+            depth -= 1
+        index += 1
+    # Edge Case: Unmatched parenthesis
+    if depth > 0:
+        raise ValueError("tree missing")
+    # Extract the subtree content
+    subtree_content = content[start_index+1:index-1]
+    # Edge Case: Empty subtree
+    if not subtree_content:
+        raise ValueError("tree with no nodes")
+    # Edge Case: Subtree doesn't start with ';'
+    if not subtree_content.startswith(';'):
+        raise ValueError("tree missing")
+    # Parse the subtree
+    tree = _parse_tree(subtree_content)
+    return tree, index
+def _parse_properties(content: str, start_index: int) -> tuple[dict, int]:
+    """
+    Parse properties from the content starting at a given index.
+    Args:
+        content: The content to parse
+        start_index: The index to start parsing from
+    Returns:
+        tuple: A tuple containing the parsed properties dictionary and the index after the properties
+    """
+    properties = {}
+    index = start_index
+    while index < len(content) and content[index] not in ['(', ')']:
+        # If we encounter a ';' not at the start, it's the beginning of a new node
+        if content[index] == ';' and index > start_index:
+            break
+        # Skip semicolons at the start
+        if content[index] == ';':
+            index += 1
+            continue
+        # Parse 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: No key found
+        if index == key_start:
+            raise ValueError("properties without delimiter")
+        key = content[key_start:index]
+        # Parse values
+        values = []
+        # Expect at least one value
+        if index >= len(content) or content[index] != '[':
+            raise ValueError("properties without delimiter")
+        while index < len(content) and content[index] == '[':
+            index += 1  # Skip '['
+            value_start = index
+            # Parse value
+            value_chars = []
+            while index < len(content) and content[index] != ']':
+                if content[index] == '\\':
+                    # Handle escape sequences
+                    index += 1
+                    if index >= len(content):
+                        raise ValueError("properties without delimiter")
+                    # Add both the backslash and the escaped character
+                    value_chars.append('\\')
+                    value_chars.append(content[index])
+                else:
+                    value_chars.append(content[index])
+                index += 1
+            # Edge Case: Unclosed bracket
+            if index >= len(content) or content[index] != ']':
+                raise ValueError("properties without delimiter")
+            # Process the value according to SGF Text type rules
+            value = _process_text_value(''.join(value_chars))
+            values.append(value)
+            index += 1  # Skip ']'
+        # Add property
+        properties[key] = values
+    return properties, index
+def _process_text_value(value: str) -> str:
+    """
+    Process a text value according to SGF Text type rules.
+    Args:
+        value: The raw text value
+    Returns:
+        str: The processed text value
+    """
+    result = []
+    i = 0
+    while i < len(value):
+        if value[i] == '\\':
+            i += 1
+            if i >= len(value):
+                # Trailing backslash - this should not happen in valid SGF but we handle it
+                result.append('\\')
+                break
+            char = value[i]
+            # If next character is newline, remove the backslash and newline and add a space
+            if char == '\n':
+                result.append(' ')
+                i += 1
+                continue
+            # Add the backslash and the character to preserve the escape sequence
+            result.append('\\')
+            result.append(char)
+            i += 1
+        elif value[i] == '\n':
+            # Newlines remain as newlines unless immediately after a backslash
+            result.append(value[i])
+            i += 1
+        elif value[i].isspace() and value[i] != '\n':
+            # All whitespace characters other than newline are converted to spaces
+            result.append(' ')
+            i += 1
+        else:
+            result.append(value[i])
+            i += 1
+    return ''.join(result)
+# Handled Edge Cases: Empty input, missing parentheses, missing semicolons,
+#                      unmatched parentheses, empty subtrees, missing brackets,
+#                      non-uppercase keys, trailing backslashes, invalid escape sequences