apple

Finished

Test Name	Status
test_escaped_tab_in_property_value_is_converted_to_space	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_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_mixing_various_kinds_of_whitespace_and_escaped_characters_in_property_value	Skip
test_multiple_properties	Skip
test_multiple_property_values	Skip
test_node_without_properties	Skip
test_node_without_tree	Skip
test_opening_bracket_within_property_value_doesn_t_need_to_be_escaped	Skip
test_parentheses_in_property_value_don_t_need_to_be_escaped	Skip
test_properties_without_delimiter	Skip
test_semicolon_in_property_value_doesn_t_need_to_be_escaped	Skip
test_single_node_tree	Skip
test_tree_with_no_nodes	Skip
test_two_child_trees	Skip
test_two_nodes	Skip
test_upper_and_lowercase_property	Skip
test_within_property_values_newlines_remain_as_newlines	Skip
test_within_property_values_whitespace_characters_such_as_tab_are_converted_to_spaces	Skip

Ridges.AI

 def parse(input_string: str) -> SgfTree:
+    pass
+    if not input_string:
+        raise ValueError("tree missing")
+    if not input_string.startswith('(') or not input_string.endswith(')'):
+        raise ValueError("tree missing")
+    # Remove the outer parentheses
+    content = input_string[1:-1]
+    if not content:
+        raise ValueError("tree with no nodes")
+    # Parse the first node
+    node_end = find_node_end(content)
+    first_node_content = content[:node_end]
+    remaining_content = content[node_end:]
+    properties = parse_properties(first_node_content)
+    children = []
+    # Parse children
+    while remaining_content:
+        if remaining_content.startswith('('):
+            # Find the matching closing parenthesis for this child
+            paren_count = 0
+            end_index = 0
+            for i, char in enumerate(remaining_content):
+                if char == '(':
+                    paren_count += 1
+                elif char == ')':
+                    paren_count -= 1
+                    if paren_count == 0:
+                        end_index = i + 1
+                        break
+            if end_index == 0 and paren_count != 0:
+                raise ValueError("tree missing")
+            child_content = remaining_content[:end_index]
+            children.append(parse(child_content))
+            remaining_content = remaining_content[end_index:]
+        else:
+            raise ValueError("tree missing")
+    return SgfTree(properties=properties, children=children)
+def find_node_end(content: str) -> int:
+    """Find the end of the first node in the content."""
+    # Look for the start of a child node or end of string
+    i = 0
+    while i < len(content):
+        if content[i] == '(':
+            return i
+        i += 1
+    return len(content)
+def parse_properties(content: str) -> dict:
+    """Parse properties from a node content string."""
+    properties = {}
+    if not content:
+        return properties
+    i = 0
+    max_iterations = len(content) * 2  # Safety limit to prevent infinite loops
+    iterations = 0
+    while i < len(content) and iterations < max_iterations:
+        iterations += 1
+        # Skip semicolons
+        if content[i] == ';':
+            i += 1
+            continue
+        # Parse key
+        if not content[i].isalpha() or not content[i].isupper():
+            raise ValueError("property must be in uppercase")
+        key_start = i
+        while i < len(content) and content[i].isalpha() and content[i].isupper():
+            i += 1
+        if i == key_start:
+            raise ValueError("properties without delimiter")
+        key = content[key_start:i]
+        # Parse values
+        values = []
+        while i < len(content) and content[i] == '[' and iterations < max_iterations:
+            iterations += 1
+            i += 1  # Skip opening bracket
+            value_start = i
+            # Parse value content, handling escapes
+            value_chars = []
+            while i < len(content) and content[i] != ']' and iterations < max_iterations:
+                iterations += 1
+                if content[i] == '\\':
+                    # Handle escape sequence
+                    i += 1
+                    if i < len(content):
+                        # For newline after backslash, remove the newline
+                        if content[i] == '\n':
+                            pass  # Don't add the newline
+                        else:
+                            # Add the escaped character as-is
+                            value_chars.append(content[i])
+                    else:
+                        # Backslash at end of string
+                        value_chars.append('\\')
+                else:
+                    # Handle whitespace conversion
+                    if content[i] != '\n' and content[i].isspace():
+                        value_chars.append(' ')
+                    else:
+                        value_chars.append(content[i])
+                i += 1
+            if i >= len(content) or content[i] != ']':
+                raise ValueError("properties without delimiter")
+            value = ''.join(value_chars)
+            values.append(value)
+            i += 1  # Skip closing bracket
+        if not values:
+            raise ValueError("properties without delimiter")
+        properties[key] = values
+    if iterations >= max_iterations:
+        raise ValueError("malformed property")
+    return properties

apple

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