working AST

simulator_SIC_XE/include/parser.h

@@ -0,0 +1,52 @@
+// parser.h
+#ifndef PARSER_H
+#define PARSER_H
+
+#include <string>
+#include <vector>
+#include <memory>
+#include <unordered_map>
+#include <cstdint>
+
+#include "lexer.h"
+#include "code.h"
+#include "opcode.h"
+#include "mnemonic.h"
+
+class Parser {
+public:
+    Parser() = default;
+
+    Code parse(const std::string& input);
+
+private:
+    std::string parseLabel();
+    std::shared_ptr<Mnemonic> parseMnemonic();
+    std::string parseSymbol();
+    int  parseRegister();
+    void parseComma();
+    bool parseIndexed();
+    int  parseNumber(int lo, int hi);
+    std::vector<std::uint8_t> parseData();
+
+    void parseOperands(Mnemonic& m);
+    
+    bool isDirective(const std::string& name);
+    bool isDataDirective(const std::string& name);
+    std::shared_ptr<Node> parseDirective(const std::string& label, const std::string& directive);
+    std::shared_ptr<Node> parseDataDirective(const std::string& label, const std::string& directive);
+
+    std::shared_ptr<Node> parseInstruction();
+    Code parseCode();
+
+    std::shared_ptr<Mnemonic> makeMnemonic(const std::string& name, bool extended);
+    static void initMnemonicMap();
+
+private:
+    Lexer lexer_{""};
+
+    static inline std::unordered_map<std::string, std::uint8_t> s_nameToOpcode{};
+    static inline bool s_mnemonicMapInitialized = false;
+};
+
+#endif // PARSER_H