ebnf_plan.txt

EAPROGRAM = [ LINE , { NEWLINE , LINE } ];

LINE = PREPROCESSOR_COMMAND | LABEL | STATEMENT_LIST;

PREPROCESSOR_COMMAND = "#include" , WIN_PATHNAME | "#incbin" , WIN_PATHNAME | "#" , IDENTIFIER , { PREPROC_PARAM }; //No whitespace between # and Identifier
WIN_PATHNAME = STRING | [^Path.GetInvalidPathChars()]+ //Note WIN_PATHNAME is a superset of NUMBER and IDENTIFIER
PREPROC_PARAM = -[^\w]+ | IDENTIFIER

LABEL = INDENTIFIER , COLON;

STATEMENT_LIST = STATEMENT , { SEMICOLON , STATEMENTS };
STATEMENT = MACRO | RAW , { PARAM };
MACRO = IDENTIFIER , OPEN_PAREN , PARAM_LIST , CLOSE_PAREN; //Expands to the string with a matching number of parameters, in code (think python's exec()). Gets parsed as such immediately.
//Note: NO WHITESPACE between the identifier and open_paren
PARAM_LIST = PARAM , { COMMA , PARAM };
RAW = IDENTIFIER;

PARAM = ATOM | LIST | STRING;

ATOM = ATOM , MUL_OP , PREC4 | ATOM , DIV_OP , PREC4 | PREC4;
PREC4 = PREC4 , ADD_OP , PREC5 | PREC4 , SUB_OP , PREC5 | PREC5
PREC5 = PREC5 , LSHIFT_OP , PREC8 | PREC5 , RSHIFT_OP , PREC8 | PREC8
PREC8 = PREC8 , AND_OP , PREC9 | PREC9
PREC9 = PREC9 , XOR_OP , PREC10 | PREC10
PREC10 = LITERAL , OR_OP , PREC10 | LITERAL
LITERAL = OPEN_PAREN , ATOM , CLOSE_PAREN | IDENTIFIER | MACRO | NUMBER

LIST = OPEN_BRACKET , ATOM , { COMMA , ATOM } , CLOSE_BRACKET; //Shorthand for construction of a large int / series of ints?

STRING = QUOTE , STRING_ELEM , QUOTE; //Quotes handled in tokenization

NEWLINE = "\n";
SEMICOLON = ";";
COLON = ":";
OPEN_PAREN = "(";
CLOSE_PAREN = ")";
MUL_OP = "*";
DIV_OP = "/";
ADD_OP = "+";
SUB_OP = "_";
LSHIFT_OP = "<<";
RSHIFT_OP = ">>";
AND_OP = "&";
XOR_OP = "^";
OR_OP = "|";
NUMBER = SUB_OP USIGNED_NUMBER | USIGNED_NUMBER
USIGNED_NUMBER = [0_9]+ | \$[0_9]+ | 0x[0_9]+;
OPEN_BRACKET = "[";
CLOSE_BRACKET = "]";
QUOTE = "\"";
ESCAPE_CHAR = [trn\"\\]; //Might be missing some
STRING_ELEM = [^\"\\] | "\\" , ESCAPE_CHAR;
IDENTIFIER = [a_zA_Z][a_zA_Z0_9\_]*;