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for compile-time constants << and >> are now available

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Wolfgang Bumiller 2013-01-10 15:12:19 +01:00
parent 06101d48e4
commit 428453a132
2 changed files with 12 additions and 2 deletions
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3
lexer.h
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@ -250,6 +250,9 @@ static const oper_info fte_operators[] = {
{ "+", 2, opid1('+'), ASSOC_LEFT, 12, 0 }, { "+", 2, opid1('+'), ASSOC_LEFT, 12, 0 },
{ "-", 2, opid1('-'), ASSOC_LEFT, 12, 0 }, { "-", 2, opid1('-'), ASSOC_LEFT, 12, 0 },
{ "<<", 2, opid2('<','<'), ASSOC_LEFT, 11, 0 },
{ ">>", 2, opid2('>','>'), ASSOC_LEFT, 11, 0 },
{ "<", 2, opid1('<'), ASSOC_LEFT, 10, 0 }, { "<", 2, opid1('<'), ASSOC_LEFT, 10, 0 },
{ ">", 2, opid1('>'), ASSOC_LEFT, 10, 0 }, { ">", 2, opid1('>'), ASSOC_LEFT, 10, 0 },
{ "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0 }, { "<=", 2, opid2('<','='), ASSOC_LEFT, 10, 0 },

11
parser.c
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@ -929,14 +929,21 @@ static bool parser_sy_apply_operator(parser_t *parser, shunt *sy)
exprs[0], exprs[1]); exprs[0], exprs[1]);
break; break;
case opid1('^'): case opid1('^'):
parseerror(parser, "TODO: bitxor"); compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-xor via ^");
return false; return false;
case opid2('<','<'): case opid2('<','<'):
case opid2('>','>'): case opid2('>','>'):
if (CanConstFold(exprs[0], exprs[1]) && ! NotSameType(TYPE_FLOAT)) {
if (op->id == opid2('<','<'))
out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) << (int)(ConstF(1))));
else
out = (ast_expression*)parser_const_float(parser, (double)((int)(ConstF(0)) >> (int)(ConstF(1))));
break;
}
case opid3('<','<','='): case opid3('<','<','='):
case opid3('>','>','='): case opid3('>','>','='):
parseerror(parser, "TODO: shifts"); compile_error(ast_ctx(exprs[0]), "Not Yet Implemented: bit-shifts");
return false; return false;
case opid2('|','|'): case opid2('|','|'):