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For bit_set, allow + and - to be aliases for | and &~, respectively

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gingerBill
2021-03-23 23:34:01 +00:00
parent 082381284c
commit fc1a352285
3 changed files with 31 additions and 2 deletions
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17
src/check_expr.cpp
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@@ -1269,7 +1269,9 @@ bool check_binary_op(CheckerContext *c, Operand *o, Token op) {
switch (op.kind) {
case Token_Sub:
case Token_SubEq:
if (!is_type_numeric(type)) {
if (is_type_bit_set(type)) {
return true;
} else if (!is_type_numeric(type)) {
error(op, "Operator '%.*s' is only allowed with numeric expressions", LIT(op.string));
return false;
}
@@ -1280,7 +1282,9 @@ bool check_binary_op(CheckerContext *c, Operand *o, Token op) {
case Token_MulEq:
case Token_QuoEq:
case Token_AddEq:
if (!is_type_numeric(type)) {
if (is_type_bit_set(type)) {
return true;
} else if (!is_type_numeric(type)) {
error(op, "Operator '%.*s' is only allowed with numeric expressions", LIT(op.string));
return false;
}
@@ -1293,6 +1297,8 @@ bool check_binary_op(CheckerContext *c, Operand *o, Token op) {
}
error(op, "String concatenation is only allowed with constant strings");
return false;
} else if (is_type_bit_set(type)) {
return true;
} else if (!is_type_numeric(type)) {
error(op, "Operator '%.*s' is only allowed with numeric expressions", LIT(op.string));
return false;
@@ -2682,6 +2688,13 @@ void check_binary_expr(CheckerContext *c, Operand *x, Ast *node, Type *type_hint
op.kind = Token_QuoEq; // NOTE(bill): Hack to get division of integers
}
if (is_type_bit_set(type)) {
switch (op.kind) {
case Token_Add: op.kind = Token_Or; break;
case Token_Sub: op.kind = Token_AndNot; break;
}
}
x->value = exact_binary_operator_value(op.kind, a, b);
if (is_type_typed(type)) {