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-(* Detailed Scripting Language Grammar *)
-
-(* Program Structure *)
-program = statement_list
-statement_list = statement { statement }
-statement = assignment | function_declaration | expression_statement | io_statement | ";"
-
-(* Variables and Assignment *)
-assignment = identifier ":" assignment_value
-assignment_value = function_call | simple_expression
-
-(* Function Declarations *)
-function_declaration = identifier ":" parameter_list "->" function_body
-parameter_list = identifier { identifier }
-function_body = arithmetic_expression | case_expression
-
-(* Function Calls *)
-function_call = identifier argument_list
-argument_list = expression { expression }
-
-(* Expressions *)
-expression = arithmetic_expression | simple_expression
-simple_expression = identifier | number | string
-expression_statement = expression
-
-(* Arithmetic Expressions - Prefix Notation *)
-arithmetic_expression = arithmetic_operator expression expression
-arithmetic_operator = "+" | "-" | "*" | "/"
-
-(* Case Expressions *)
-case_expression = "case" value_list "of" case_list
-value_list = expression { expression }
-case_list = case_branch { case_branch }
-case_branch = pattern ":" result
-pattern = pattern_element { pattern_element }
-pattern_element = number | wildcard | identifier
-result = result_element { result_element }
-result_element = string | number | identifier
-
-(* IO Statements *)
-io_statement = io_operator [ expression ]
-io_operator = "..in" | "..out"
-
-(* Terminals *)
-identifier = letter { letter | digit }
-number = digit { digit }
-string = '"' { character } '"'
-wildcard = "_"
-letter = "a" | "b" | "c" | "d" | "e" | "f" | "g" | "h" | "i" | "j" | "k" | "l" | "m" | "n" | "o" | "p" | "q" | "r" | "s" | "t" | "u" | "v" | "w" | "x" | "y" | "z" | "A" | "B" | "C" | "D" | "E" | "F" | "G" | "H" | "I" | "J" | "K" | "L" | "M" | "N" | "O" | "P" | "Q" | "R" | "S" | "T" | "U" | "V" | "W" | "X" | "Y" | "Z"
-digit = "0" | "1" | "2" | "3" | "4" | "5" | "6" | "7" | "8" | "9"
-character = letter | digit | " " | "!" | "#" | "$" | "%" | "&" | "'" | "(" | ")" | "*" | "+" | "," | "-" | "." | "/" | ":" | ";" | "<" | "=" | ">" | "?" | "@" | "[" | "\" | "]" | "^" | "`" | "{" | "|" | "}" | "~"
-
-(* Parsing Precedence and Disambiguation *)
-
-(* Key Insights from Debug Analysis: *)
-
-(* 1. Assignment parsing needs to distinguish between function calls and simple values *)
-(* assignment_value = function_call | simple_expression *)
-
-(* 2. Function calls in assignments: "result : add 3 4;" *)
-(* - "add" is an identifier *)
-(* - "3" and "4" are arguments *)
-(* - Should parse as: assignment(identifier("result"), function_call("add", [3, 4])) *)
-
-(* 3. Case expressions work correctly but function calls within them don't *)
-(* - Case patterns: "0 0", "0 _", "_ 0", "_ _" *)
-(* - Case results: string literals, numbers, identifiers *)
-
-(* 4. Arithmetic expressions use prefix notation *)
-(* - "+ x y" not "x + y" *)
-(* - "* 5 2" not "5 * 2" *)
-
-(* 5. IO statements are special *)
-(* - "..in" reads from stdin *)
-(* - "..out expression" writes to stdout *)
-
-(* Examples with Parse Trees *)
-
-(* Example 1: Simple assignment *)
-(* Input: "x : 5;" *)
-(* Parse: assignment(identifier("x"), number(5)) *)
-
-(* Example 2: Function call assignment *)
-(* Input: "result : add 3 4;" *)
-(* Parse: assignment(identifier("result"), function_call("add", [number(3), number(4)])) *)
-
-(* Example 3: Case expression *)
-(* Input: "compare : x y -> case x y of 0 0 : \"both zero\";" *)
-(* Parse: function_declaration("compare", ["x", "y"], case_expression([identifier("x"), identifier("y")], [case_branch([number(0), number(0)], [string("both zero")])])) *)
-
-(* Example 4: Arithmetic expression *)
-(* Input: "sum : + x y;" *)
-(* Parse: assignment(identifier("sum"), arithmetic_expression("+", identifier("x"), identifier("y"))) *)
-
-(* Example 5: IO statement *)
-(* Input: "..out \"Hello\";" *)
-(* Parse: io_statement("..out", string("Hello")) *) 
\ No newline at end of file