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Fixed up grammer to resolve some ambiguities.

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This commit is contained in:
Nathan Braswell
2013-08-27 16:47:33 -04:00
parent e868c240d8
commit f07582e692
2 changed files with 10 additions and 11 deletions
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19
krakenGrammer.kgm
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@@ -32,7 +32,7 @@ parameter = expression ;
code_block = "{" WS statement_list WS "}" ;
statement_list = statement_list WS statement | statement ;
statement = function_call WS ";" | if_statement | return_statement | expression | booleang_expression | assignment_statement | code_block ;
statement = if_statement | return_statement | expression WS ";" | boolean_expression WS ";" | assignment_statement WS ";" | code_block ;
function_call = scope identifier "\(" WS opt_parameter_list WS "\)" ;
scope = scope identifier "::" | ;
@@ -40,26 +40,25 @@ if_statement = "if" WS boolean_expression WS statement | "if" WS "\(" WS boolean
boolean_expression = boolean_expression WS "\|\|" WS and_boolean_expression | and_boolean_expression ;
and_boolean_expression = and_boolean_expression "&&" bool_exp | bool_exp ;
bool_exp = "!" WS bool_exp | statement WS "==" WS statement | bool ;
bool_exp = "!" WS bool_exp | expression WS "==" WS expression | bool ;
return_statement = "return" WS "\(" WS expression WS "\)" WS ";" | "return" WS expression WS ";" ;
expression = expression WS "-" WS term | expression WS "\+" WS term | term ;
term = term WS forward_slash WS factor | term WS "\*" WS factor | factor ;
factor = number | identifier | function_call | bool | pointer | string ;
factor = number | identifier | function_call | bool | string ;
number = integer | float | double ;
assignment_statement = identifier WS "=" WS statement ;
assignment_statement = identifier WS "=" WS expression ;
alpha = "(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|.|_|-)+" ;
numeric = "(0|1|2|3|4|5|6|7|8|9)+" ;
alphanumeric = alphanumeric numeric | alphanumeric alpha | numeric | alpha ;
hexadecimal = sign WS "0x(1|2|3|4|5|6|7|8|9|a|b|c|d|e|f)+" ;
sign = "\+|-" | ;
integer = sign WS numeric | hexadecimal ;
sign = "\+|-" WS | ;
integer = sign numeric | hexadecimal | "null" ;
float = sign numeric "." numeric "f" ;
double = sign numeric "." numeric | sign numeric "." numeric "d" ;
bool = "true" | "false" ;
pointer = hexadecimal | "null" ;
bool = "true" | "false" | "True" | "False" ;
alpha = "(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|.|_)+" ;
numeric = "(0|1|2|3|4|5|6|7|8|9)+" ;
string = "\"(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|.|!|_|-| | |\\|/|\||0|1|2|3|4|5|6|7|8|9)+\"" ;