apple

Finished

Test Name	Status
test_all_lowercase_property	Fail
test_empty_input	Skip
test_escaped_backslash_in_property_value_becomes_just_a_backslash	Skip
test_escaped_closing_bracket_within_property_value_becomes_just_a_closing_bracket	Skip
test_escaped_newline_in_property_value_is_converted_to_nothing_at_all	Skip
test_escaped_t_and_n_in_property_value_are_just_letters_not_whitespace	Skip
test_escaped_tab_in_property_value_is_converted_to_space	Skip
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[:node_end]
+    remaining = content[node_end:]
+    properties = parse_properties(first_node)
+    children = []
+    # Parse children
+    while remaining.startswith('('):
+        child_end = find_matching_paren(remaining, 0)
+        child_tree = parse(remaining[:child_end+1])
+        children.append(child_tree)
+        remaining = remaining[child_end+1:]
+    return SgfTree(properties=properties, children=children)
+def find_node_end(content: str) -> int:
+    """Find the end of the first node (before any children)"""
+    i = 0
+    while i < len(content):
+        if content[i] == '(':
+            return i
+        i += 1
+    return len(content)
+def find_matching_paren(s: str, start: int) -> int:
+    """Find the matching parenthesis for the one at start position"""
+    if s[start] != '(':
+        return -1
+    count = 1
+    i = start + 1
+    while i < len(s) and count > 0:
+        if s[i] == '(':
+            count += 1
+        elif s[i] == ')':
+            count -= 1
+        i += 1
+    if count != 0:
+        raise ValueError("tree missing")
+    return i - 1
+def parse_properties(node_content: str) -> dict:
+    """Parse properties from a node content string"""
+    properties = {}
+    if not node_content.startswith(';'):
+        # This must be the root node without semicolon
+        prop_start = 0
+    else:
+        prop_start = 1
+    i = prop_start
+    while i < len(node_content):
+        # Parse key
+        if i >= len(node_content):
+            break
+        key_start = i
+        while i < len(node_content) and node_content[i].isalpha() and node_content[i].isupper():
+            i += 1
+        if i == key_start:
+            if node_content[key_start] == ';':
+                i += 1
+                continue
+            else:
+                raise ValueError("properties without delimiter")
+        key = node_content[key_start:i]
+        # Check if key is uppercase
+        if not key.isupper():
+            raise ValueError("property must be in uppercase")
+        # Parse values
+        values = []
+        while i < len(node_content) and node_content[i] == '[':
+            i += 1  # Skip opening bracket
+            value_start = i
+            # Find the closing bracket, taking care of escaped brackets
+            bracket_count = 1
+            while i < len(node_content) and bracket_count > 0:
+                if node_content[i] == '\\' and i + 1 < len(node_content):
+                    i += 2  # Skip escape and next character
+                elif node_content[i] == '[':
+                    bracket_count += 1
+                    i += 1
+                elif node_content[i] == ']':
+                    bracket_count -= 1
+                    i += 1
+                else:
+                    i += 1
+            if bracket_count != 0:
+                raise ValueError("properties without delimiter")
+            value = node_content[value_start:i-1]
+            values.append(parse_text(value))
+        if not values:
+            raise ValueError("properties without delimiter")
+        properties[key] = values
+        # Ensure we're making progress to avoid infinite loop
+        if i <= key_start and key_start < len(node_content):
+            i = key_start + 1
+    return properties
+def parse_text(text: str) -> str:
+    """Parse SGF Text type according to specifications"""
+    result = []
+    i = 0
+    while i < len(text):
+        if text[i] == '\\':
+            # Handle escape character
+            if i + 1 < len(text):
+                next_char = text[i + 1]
+                if next_char == '\n':
+                    # Backslash followed by newline - remove both
+                    i += 2
+                elif next_char.isspace():
+                    # Backslash followed by other whitespace - convert to space
+                    result.append(' ')
+                    i += 2
+                else:
+                    # Backslash followed by non-whitespace - insert as-is
+                    result.append(next_char)
+                    i += 2
+            else:
+                # Backslash at end of string - treat as literal backslash
+                result.append('\\')
+                i += 1
+        elif text[i] == '\n':
+            # Newlines remain as newlines
+            result.append('\n')
+            i += 1
+        elif text[i].isspace() and text[i] != '\n':
+            # Other whitespace converted to spaces
+            result.append(' ')
+            i += 1
+        else:
+            # Regular character
+            result.append(text[i])
+            i += 1
+    return ''.join(result)
+# Handled Edge Cases: empty input, missing parentheses, no nodes, properties without delimiters, non-uppercase properties, missing tree structure, escape sequences in text, whitespace handling in text

apple

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