Fixed issue #209.

3 files changed, 47 insertions, 13 deletions

diff --git a/src/yuescript/yue_compiler.cpp b/src/yuescript/yue_compiler.cpp
index 68ce9b5..d5db8a1 100644
--- a/src/yuescript/yue_compiler.cpp
+++ b/src/yuescript/yue_compiler.cpp
@@ -16,6 +16,8 @@ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLI
 #include <unordered_set>
 #include <variant>
 #include <vector>
+#include <iomanip>
+#include <ostream>
 
 #include "yuescript/yue_compiler.h"
 #include "yuescript/yue_parser.h"
@@ -75,7 +77,7 @@ static std::unordered_set<std::string> Metamethods = {
         "close"s // Lua 5.4
 };
 
-const std::string_view version = "0.27.4"sv;
+const std::string_view version = "0.27.5"sv;
 const std::string_view extension = "yue"sv;
 
 class CompileError : public std::logic_error {
@@ -7144,6 +7146,33 @@ private:
         void transformNum(Num_t* num, str_list& out) {
                 std::string numStr = _parser.toString(num);
                 numStr.erase(std::remove(numStr.begin(), numStr.end(), '_'), numStr.end());
+                if (numStr.size() > 2 && numStr[0] == '0') {
+                        if (numStr[1] == 'b' || numStr[1] == 'B') {
+                                std::string binaryPart = numStr.substr(2);
+                                try {
+                                        unsigned long long value = std::stoull(binaryPart, nullptr, 2);
+                                        numStr = std::to_string(value);
+                                } catch (const std::exception& e) {
+                                        throw CompileError("invalid binary literal"sv, num);
+                                }
+                        } else if (getLuaTarget(num) < 502) {
+                                if (numStr[1] == 'x' || numStr[1] == 'X') {
+                                        if (numStr.find_first_of(".-"sv) != std::string::npos) {
+                                                std::stringstream ss(numStr);
+                                                double v;
+                                                ss >> std::hexfloat >> v;
+                                                if (ss.fail() || !std::isfinite(v)) {
+                                                        throw CompileError("invalid hex‑float literal"sv, num);
+                                                }
+                                                std::ostringstream outSs;
+                                                outSs << std::setprecision(17) << v;
+                                                numStr = outSs.str();
+                                        } else {
+                                                numStr.erase(std::remove(numStr.begin(), numStr.end(), '+'), numStr.end());
+                                        }
+                                }
+                        }
+                }
                 out.push_back(numStr);
         }
 
diff --git a/src/yuescript/yue_parser.cpp b/src/yuescript/yue_parser.cpp
index ceb1f7c..77c5901 100644
--- a/src/yuescript/yue_parser.cpp
+++ b/src/yuescript/yue_parser.cpp
@@ -67,24 +67,28 @@ YueParser::YueParser() {
         num_char = range('0', '9') >> *(range('0', '9') | '_' >> and_(range('0', '9')));
         num_char_hex = range('0', '9') | range('a', 'f') | range('A', 'F');
         num_lit = num_char_hex >> *(num_char_hex | '_' >> and_(num_char_hex));
+        num_bin_lit = set("01") >> *(set("01") | '_' >> and_(set("01")));
         Num =
-                "0x" >> (
-                        +num_lit >> (
-                                '.' >> +num_lit >> -num_expo_hex |
-                                num_expo_hex |
-                                lj_num |
-                                true_()
-                        ) | (
-                                '.' >> +num_lit >> -num_expo_hex
-                        )
+                '0' >> (
+                        set("xX") >> (
+                                num_lit >> (
+                                        '.' >> num_lit >> -num_expo_hex |
+                                        num_expo_hex |
+                                        lj_num |
+                                        true_()
+                                ) | (
+                                        '.' >> num_lit >> -num_expo_hex
+                                )
+                        ) |
+                        set("bB") >> num_bin_lit
                 ) |
-                +num_char >> (
-                        '.' >> +num_char >> -num_expo |
+                num_char >> (
+                        '.' >> num_char >> -num_expo |
                         num_expo |
                         lj_num |
                         true_()
                 ) |
-                '.' >> +num_char >> -num_expo;
+                '.' >> num_char >> -num_expo;
 
         cut = false_();
         Seperator = true_();
diff --git a/src/yuescript/yue_parser.h b/src/yuescript/yue_parser.h
index 02292e1..7281ec3 100644
--- a/src/yuescript/yue_parser.h
+++ b/src/yuescript/yue_parser.h
@@ -164,6 +164,7 @@ private:
         NONE_AST_RULE(num_char);
         NONE_AST_RULE(num_char_hex);
         NONE_AST_RULE(num_lit);
+        NONE_AST_RULE(num_bin_lit);
         NONE_AST_RULE(num_expo);
         NONE_AST_RULE(num_expo_hex);
         NONE_AST_RULE(lj_num);