authorgravatar for thatlemon@gmail.comLemonBoy <thatlemon@gmail.com> 2019-04-20 11:25:57+02:00
committergravatar for thatlemon@gmail.comLemonBoy <thatlemon@gmail.com> 2019-04-22 22:23:41+02:00
log8d05330cf7451066e01700140dcab692624a17bf
treee881238e46ce8054f4eeebb5c93abfa5dabe4f85
parentab424bbb35616500b8621fd72562a38ddc824add

More precise translation of char literals

1 files changed, 26 insertions(+), 7 deletions(-)

src/translate_c.cpp+26-7
......@@ -1335,14 +1335,33 @@ static AstNode *trans_floating_literal(Context *c, ResultUsed result_used, const
13351335}
13361336
13371337static AstNode *trans_character_literal(Context *c, ResultUsed result_used, const clang::CharacterLiteral *stmt) {
1338 clang::Expr::EvalResult result;
1339 if (!stmt->EvaluateAsInt(result, *reinterpret_cast<clang::ASTContext *>(c->ctx))) {
1340 emit_warning(c, bitcast(stmt->getBeginLoc()), "invalid character literal");
1341 return nullptr;
1338 switch (stmt->getKind()) {
1339 case clang::CharacterLiteral::CharacterKind::Ascii:
1340 {
1341 unsigned val = stmt->getValue();
1342 // C has a somewhat obscure feature called multi-character character
1343 // constant
1344 if (val > 255)
1345 return trans_create_node_unsigned(c, val);
1346 }
1347 // fallthrough
1348 case clang::CharacterLiteral::CharacterKind::UTF8:
1349 {
1350 AstNode *node = trans_create_node(c, NodeTypeCharLiteral);
1351 node->data.char_literal.value = stmt->getValue();
1352 return maybe_suppress_result(c, result_used, node);
1353 }
1354 case clang::CharacterLiteral::CharacterKind::UTF16:
1355 emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO support UTF16 character literals");
1356 return nullptr;
1357 case clang::CharacterLiteral::CharacterKind::UTF32:
1358 emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO support UTF32 character literals");
1359 return nullptr;
1360 case clang::CharacterLiteral::CharacterKind::Wide:
1361 emit_warning(c, bitcast(stmt->getBeginLoc()), "TODO support wide character literals");
1362 return nullptr;
13421363 }
1343 AstNode *node = trans_create_node(c, NodeTypeCharLiteral);
1344 node->data.char_literal.value = result.Val.getInt().getExtValue();
1345 return maybe_suppress_result(c, result_used, node);
1364 zig_unreachable();
13461365}
13471366
13481367static AstNode *trans_constant_expr(Context *c, ResultUsed result_used, const clang::ConstantExpr *expr) {