simpleParser.scm

#reader(lib"read.ss""wxme")WXME0108 ## 
#|
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3 41 #"; A simple parser for a Java-ish language"
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0 0 17 3 41 #"; EECS 345: Programming Language Concepts"
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0 0 17 3 1 #";"
0 0 24 29 1 #"\n"
0 0 17 3 79
(
 #"; A recursive descent parser and a lexical analyzer for simple Java "
 #"statements."
) 0 0 24 29 1 #"\n"
0 0 17 3 79
(
 #"; The language allows assignments, all mathematical expressions, if "
 #"statements,"
) 0 0 24 29 1 #"\n"
0 0 17 3 54 #"; while statement with break and continue, and blocks."
0 0 24 29 1 #"\n"
0 0 17 3 1 #";"
0 0 24 29 1 #"\n"
0 0 17 3 26 #"; To call the parser, use:"
0 0 24 29 1 #"\n"
0 0 17 3 23 #";     (parser filename)"
0 0 24 29 1 #"\n"
0 0 17 3 1 #";"
0 0 24 29 1 #"\n"
0 0 17 3 49 #"; The return value is a parse tree in list format"
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0 0 14 3 4 #"load"
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0 0 15 3 6 #"define"
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0 0 17 3 48 #";==============================================="
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0 0 17 3 30 #"; The recursive descent parser"
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(
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0 0 14 3 4 #"set!"
0 0 24 3 1 #" "
0 0 14 3 15 #"parse-statement"
0 0 24 3 2 #" ("
0 0 14 3 12 #"assign-parse"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 3 10 #"         ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 9 #"SEMICOLON"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"             "
0 0 14 3 15 #"parse-statement"
0 0 24 29 1 #"\n"
0 0 24 3 14 #"             ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 19 #"\"Missing semicolon\""
0 0 24 3 6 #"))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 100
(
 #"; parse a compound statement.  We already saw the left brace so cont"
 #"inue until we see a right brace."
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 24 #"compound-statement-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 10 #"RIGHTBRACE"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 8 #"        "
0 0 21 3 1 #"'"
0 0 24 3 2 #"()"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 1 #"s"
0 0 24 3 2 #" ("
0 0 14 3 15 #"statement-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 4 #"cons"
0 0 24 3 1 #" "
0 0 14 3 1 #"s"
0 0 24 3 2 #" ("
0 0 14 3 24 #"compound-statement-parse"
0 0 24 3 7 #")))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 55 #"; parse a return statement: return followed by a value."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 12 #"return-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"return"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 94
(
 #"; parse an if statement: a condition inside parentheses, an if state"
 #"ment, and an optional else"
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 8 #"if-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTPAREN"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing opening parenthesis\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 9 #"condition"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 5 #")))  "
0 0 17 3 9 #"; changed"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"           ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 10 #"RIGHTPAREN"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 16 #"               ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing closing parenthesis\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 16 #"               ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 12 #"if-statement"
0 0 24 3 2 #" ("
0 0 14 3 15 #"statement-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 19 #"                  ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 4 #"else"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 23 #"                      ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 2 #"if"
0 0 24 3 1 #" "
0 0 14 3 9 #"condition"
0 0 24 3 1 #" "
0 0 14 3 12 #"if-statement"
0 0 24 3 2 #" ("
0 0 14 3 15 #"statement-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 23 #"                      ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 25 #"                        ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 25 #"                        ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 2 #"if"
0 0 24 3 1 #" "
0 0 14 3 9 #"condition"
0 0 24 3 1 #" "
0 0 14 3 12 #"if-statement"
0 0 24 3 9 #")))))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 62
#"; parse a while statement: a condition followed by a statement"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 11 #"while-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTPAREN"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing opening parenthesis\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 9 #"condition"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 10 #"RIGHTPAREN"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 15 #"              ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing closing parenthesis\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 15 #"              ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 5 #"while"
0 0 24 3 1 #" "
0 0 14 3 9 #"condition"
0 0 24 3 2 #" ("
0 0 14 3 15 #"statement-parse"
0 0 24 3 7 #")))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 90
(
 #"; parse a try block.  The try block is a compound statement followed"
 #" by catch block and/or"
) 0 0 24 29 1 #"\n"
0 0 17 3 17 #"; a finally block"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 9 #"try-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTBRACE"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 21 #"\"Left brace expected\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 9 #"        ("
0 0 15 3 4 #"let*"
0 0 24 3 3 #" (("
0 0 14 3 8 #"tryblock"
0 0 24 3 2 #" ("
0 0 14 3 24 #"compound-statement-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 16 #"               ("
0 0 14 3 10 #"catchblock"
0 0 24 3 2 #" ("
0 0 14 3 11 #"catch-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 16 #"               ("
0 0 14 3 12 #"finallyblock"
0 0 24 3 2 #" ("
0 0 14 3 13 #"finally-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 5 #"null?"
0 0 24 3 1 #" "
0 0 14 3 10 #"catchblock"
0 0 24 3 3 #") ("
0 0 14 3 5 #"null?"
0 0 24 3 1 #" "
0 0 14 3 12 #"finallyblock"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 15 #"              ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 30 #"\"try without catch of finally\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 15 #"              ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 3 #"try"
0 0 24 3 1 #" "
0 0 14 3 8 #"tryblock"
0 0 24 3 1 #" "
0 0 14 3 10 #"catchblock"
0 0 24 3 1 #" "
0 0 14 3 12 #"finallyblock"
0 0 24 3 6 #"))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 86
(
 #"; parse a catch block.  The catch block must contain a variable (the"
 #" exception) inside"
) 0 0 24 29 1 #"\n"
0 0 17 3 39 #"; parentheses and then a block of code."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 11 #"catch-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 10 #"nextsymbol"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 1 #" "
0 0 14 3 10 #"nextsymbol"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 15 3 5 #"catch"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 21 3 1 #"'"
0 0 24 3 3 #"())"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 4 #"let*"
0 0 24 3 3 #" (("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 18 #"                 ("
0 0 14 3 12 #"secondsymbol"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 18 #"                 ("
0 0 14 3 11 #"thirdsymbol"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 18 #"                 ("
0 0 14 3 12 #"fourthsymbol"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 15 3 4 #"cond"
0 0 24 3 3 #" (("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTPAREN"
0 0 24 3 4 #")) ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 26 #"\"Missing left parenthesis\""
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 20 #"                  (("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 12 #"secondsymbol"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"ID"
0 0 24 3 4 #")) ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing exception parameter\""
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 20 #"                  (("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 11 #"thirdsymbol"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 10 #"RIGHTPAREN"
0 0 24 3 4 #")) ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing closing parenthesis\""
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 20 #"                  (("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 12 #"fourthsymbol"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTBRACE"
0 0 24 3 4 #")) ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 23 #"\"Missing opening brace\""
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 19 #"                  ("
0 0 14 3 4 #"else"
0 0 24 3 2 #" ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 15 3 5 #"catch"
0 0 24 3 2 #" ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 12 #"secondsymbol"
0 0 24 3 4 #")) ("
0 0 14 3 24 #"compound-statement-parse"
0 0 24 3 9 #")))))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 92
(
 #"; parse a finally block.  A finally block is a compound statement th"
 #"at starts with \"finally\""
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 13 #"finally-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 10 #"nextsymbol"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 10 #"nextsymbol"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 7 #"finally"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 21 3 1 #"'"
0 0 24 3 3 #"())"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"not"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTBRACE"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 15 #"              ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Missing opening parenthesis\""
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 15 #"              ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 7 #"finally"
0 0 24 3 2 #" ("
0 0 14 3 24 #"compound-statement-parse"
0 0 24 3 7 #")))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 83
(
 #"; parse a condition: a value followed by a comparison operator follo"
 #"wed by a value."
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 10 #"cond-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 6 #"     ("
0 0 15 3 4 #"let*"
0 0 24 3 3 #" (("
0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 1 24 65 1 #"\t"
0 0 24 3 5 #"    ("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 8 #"       ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 2 #") "
0 0 24 29 1 #"\n"
0 0 24 3 17 #"                ("
0 0 14 3 2 #"or"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"=="
0 0 24 3 2 #") "
0 0 24 29 1 #"\n"
0 0 24 3 21 #"                    ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #"<"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 21 #"                    ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #">"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 21 #"                    ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"<="
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 21 #"                    ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #">="
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 21 #"                    ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"!="
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 1 24 65 1 #"\t"
0 0 24 3 3 #"  ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Unknown comparison operator\""
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 91
(
 #"; parse a variable declaration: var then left-hand-side with optiona"
 #"l = followed by a value"
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 13 #"declare-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 4 #"let*"
0 0 24 3 3 #" (("
0 0 14 3 3 #"lhs"
0 0 24 3 2 #" ("
0 0 14 3 9 #"lhs-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"           ("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #"="
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 6 #"append"
0 0 24 3 2 #" ("
0 0 14 3 4 #"cons"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 3 #"var"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 3 #") ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 4 #"cons"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 3 #"var"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 6 #"))))))"
0 0 24 29 1 #"\n"
0 0 24 3 4 #"    "
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 86
(
 #"; parse an assignment statement: a left-hand-side followed by an = f"
 #"ollowed by a value"
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 12 #"assign-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 4 #"let*"
0 0 24 3 3 #" (("
0 0 14 3 3 #"lhs"
0 0 24 3 2 #" ("
0 0 14 3 9 #"lhs-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"           ("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #"="
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 6 #"append"
0 0 24 3 2 #" ("
0 0 14 3 4 #"cons"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 14 3 3 #"lhs"
0 0 24 3 3 #") ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 29 #"\"Unknown assignment operator\""
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 73
(
 #"; parse the left hand side of an assignment.  Only variables are all"
 #"owed."
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 9 #"lhs-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 3 #"lhs"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"ID"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 10 #"         ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 10 #"         ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 38 #"\"Illegal left hand side of assignment\""
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 72
(
 #"; parse a value.  The top level of the parse is the assignment opera"
 #"tor."
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 11 #"value-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 3 #" ()"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 4 #"let*"
0 0 24 3 3 #" (("
0 0 14 3 3 #"lhs"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"           ("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"ID"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #"="
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 3 #") ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 3 #") ("
0 0 14 3 11 #"value-parse"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 12 #"orterm-parse"
0 0 24 3 1 #" "
0 0 14 3 3 #"lhs"
0 0 24 3 6 #"))))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 68
#"; continuing parsing the value.  The second level is the OR operator"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 12 #"orterm-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 19 #"orterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 13 #"andterm-parse"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 26 #"; parse the OR expression."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 19 #"orterm-parse-helper"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 12 #"firstoperand"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 4 #"\\|\\|"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 19 #"orterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 4 #"list"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 2 #"||"
0 0 24 3 1 #" "
0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 13 #"andterm-parse"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 14 3 12 #"firstoperand"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 39 #"; the third level is the AND expression"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 13 #"andterm-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 20 #"andterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 15 #"equalterm-parse"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 27 #"; parse the AND expression."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 20 #"andterm-parse-helper"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 12 #"firstoperand"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"&&"
0 0 24 3 2 #"))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 20 #"andterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 15 #"equalterm-parse"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 14 3 12 #"firstoperand"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 39 #"; the next level is the equal operators"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 15 #"equalterm-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 22 #"equalterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 17 #"compareterm-parse"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 30 #"; parse the equals expression."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 22 #"equalterm-parse-helper"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 12 #"firstoperand"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 2 #"or"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"=="
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"!="
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 22 #"equalterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 17 #"compareterm-parse"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 14 3 12 #"firstoperand"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 39 #"; next we have the comparison operators"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 17 #"compareterm-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 24 #"compareterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 13 #"addterm-parse"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 34 #"; parse the comparison expression."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 24 #"compareterm-parse-helper"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 12 #"firstoperand"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 2 #"or"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #"<"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #"<="
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 1 #">"
0 0 24 3 3 #") ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 2 #">="
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 14 3 24 #"compareterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 13 #"addterm-parse"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 14 3 12 #"firstoperand"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 88
(
 #"; continue parsing the value.  The next level is the addition and su"
 #"btraction operators."
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 13 #"addterm-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 14 3 20 #"addterm-parse-helper"
0 0 24 3 2 #" ("
0 0 14 3 14 #"multterm-parse"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 32 #"; parse the addition expression."
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 20 #"addterm-parse-helper"
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0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 12 #"firstoperand"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"    ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 7 #"      ("
0 0 14 3 2 #"if"
0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 2 #"or"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
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0 0 21 3 1 #"'"
0 0 14 3 1 #"+"
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0 0 24 3 2 #" ("
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0 0 24 3 1 #" "
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0 0 14 3 12 #"firstoperand"
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0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 11 #"          ("
0 0 15 3 5 #"begin"
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0 0 24 3 13 #"            ("
0 0 14 3 17 #"unget-next-symbol"
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0 0 24 29 1 #"\n"
0 0 24 3 12 #"            "
0 0 14 3 12 #"firstoperand"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 91
(
 #"; continue parsing the value.  The next level is the multiplication "
 #"and division operators."
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0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
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0 0 14 3 14 #"multterm-parse"
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0 0 24 3 3 #"  ("
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0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
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0 0 24 3 2 #" ("
0 0 14 3 13 #"operand-parse"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 38 #"; parse the multiplication expression."
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0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
0 0 24 3 1 #" "
0 0 14 3 21 #"multterm-parse-helper"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 12 #"firstoperand"
0 0 24 3 1 #")"
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0 0 24 3 6 #"     ("
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0 0 24 3 3 #" (("
0 0 14 3 2 #"op"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")))"
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0 0 24 3 8 #"       ("
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0 0 24 3 2 #" ("
0 0 14 3 3 #"and"
0 0 24 3 2 #" ("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"BINARY-OP"
0 0 24 3 3 #") ("
0 0 14 3 2 #"or"
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0 0 14 3 1 #"*"
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0 0 14 3 3 #"eq?"
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0 0 21 3 1 #"'"
0 0 14 3 1 #"/"
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0 0 21 3 1 #"'"
0 0 14 3 1 #"%"
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0 0 24 29 1 #"\n"
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0 0 14 3 21 #"multterm-parse-helper"
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0 0 14 3 4 #"list"
0 0 24 3 2 #" ("
0 0 14 3 3 #"cdr"
0 0 24 3 1 #" "
0 0 14 3 2 #"op"
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0 0 14 3 12 #"firstoperand"
0 0 24 3 2 #" ("
0 0 14 3 13 #"operand-parse"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"           ("
0 0 15 3 5 #"begin"
0 0 24 29 1 #"\n"
0 0 24 3 14 #"             ("
0 0 14 3 17 #"unget-next-symbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 13 #"             "
0 0 14 3 12 #"firstoperand"
0 0 24 3 5 #")))))"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 17 3 114
(
 #"; continue parsing the value.  The final level is the unary operator"
 #"s, variables, numbers, and nested parentheses."
) 0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 3 1 #"("
0 0 15 3 6 #"define"
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0 0 14 3 13 #"operand-parse"
0 0 24 29 1 #"\n"
0 0 24 3 3 #"  ("
0 0 15 3 6 #"lambda"
0 0 24 3 2 #" ("
0 0 14 3 11 #"firstsymbol"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 5 #"     "
0 0 17 3 39 #";(let ((firstsymbol (get-next-symbol)))"
0 0 24 29 1 #"\n"
0 0 24 3 8 #"       ("
0 0 15 3 4 #"cond"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"          (("
0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
0 0 14 3 11 #"firstsymbol"
0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 9 #"LEFTPAREN"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 14 #"             ("
0 0 15 3 3 #"let"
0 0 24 3 3 #" (("
0 0 14 3 8 #"retvalue"
0 0 24 3 2 #" ("
0 0 14 3 11 #"value-parse"
0 0 24 3 3 #")))"
0 0 24 29 1 #"\n"
0 0 24 3 16 #"               ("
0 0 14 3 2 #"if"
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0 0 14 3 3 #"eq?"
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0 0 14 3 3 #"car"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 3 #")) "
0 0 21 3 1 #"'"
0 0 14 3 10 #"RIGHTPAREN"
0 0 24 3 1 #")"
0 0 24 29 1 #"\n"
0 0 24 3 18 #"                  "
0 0 14 3 8 #"retvalue"
0 0 24 29 1 #"\n"
0 0 24 3 19 #"                  ("
0 0 14 3 5 #"error"
0 0 24 3 1 #" "
0 0 21 3 1 #"'"
0 0 14 3 6 #"parser"
0 0 24 3 1 #" "
0 0 19 3 28 #"\"Unmatched left parenthesis\""
0 0 24 3 4 #"))))"
0 0 24 29 1 #"\n"
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0 0 14 3 3 #"and"
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0 0 14 3 3 #"eq?"
0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
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0 0 14 3 11 #"firstsymbol"
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0 0 14 3 4 #"list"
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0 0 21 3 1 #"'"
0 0 14 3 1 #"-"
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0 0 14 3 13 #"operand-parse"
0 0 24 3 2 #" ("
0 0 14 3 15 #"get-next-symbol"
0 0 24 3 6 #"))))  "
0 0 17 3 20 #"; this is a new line"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"          (("
0 0 14 3 3 #"and"
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0 0 14 3 3 #"eq?"
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0 0 14 3 13 #"operand-parse"
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0 0 17 3 20 #"; this is a new line"
0 0 24 29 1 #"\n"
0 0 24 3 12 #"          (("
0 0 14 3 3 #"eq?"
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0 0 14 3 3 #"car"
0 0 24 3 1 #" "
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0 0 21 3 1 #"'"
0 0 14 3 6 #"NUMBER"
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0 0 21 3 1 #"'"
0 0 14 3 2 #"ID"
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0 0 24 3 2 #" ("
0 0 14 3 3 #"car"
0 0 24 3 1 #" "
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0 0 24 3 2 #") "
0 0 21 3 1 #"'"
0 0 14 3 7 #"BOOLEAN"
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0 0 24 3 1 #" "
0 0 19 3 20 #"\"Unknown statmement\""
0 0 24 3 5 #")))))"
0 0 17 3 2 #";)"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0 0 24 29 1 #"\n"
0           0