src/assembler/as_exceptions.hh

@@ -9,7 +9,8 @@ namespace tyche::as {
 class AssemblyError : public std::runtime_error
 {
 public:
-    explicit AssemblyError(std::string const& str) : std::runtime_error(str.c_str()) {}
+    explicit AssemblyError(std::string const& str, size_t line, size_t column)
+        : std::runtime_error((str + " at: line " + std::to_string(line) + ", column: " + std::to_string(column)).c_str()) {}
 };
 
 }

src/assembler/assembler.cc

@@ -1,12 +1,32 @@
 #include "assembler.hh"
 
+#include "as_exceptions.hh"
+#include "../bytecode/bytecode.hh"
+
 namespace tyche::as {
 
 ByteArray Assembler::assemble()
 {
     lexer_.reset();
+    bp_ = {};
 
-    return {};
+    enum class Section { Const, Function } section;
+    uint32_t function_id = 0;
+
+    for (;;) {
+        Token t = lexer_.ingest();
+
+        if (t.type == TokenType::Directive) {
+        } else if (section == Section::Const && t.type == TokenType::Integer) {
+        } else if (section == Section::Function && t.type == TokenType::Instruction) {
+        } else if (t.type == TokenType::EOF_) {
+            break;
+        } else if (t.type != TokenType::Enter) {
+            throw AssemblyError("Unexpected token " + t.token, t.line, t.column);
+        }
+    }
+
+    return bc::Bytecode::generate(bp_);
 }
 
 } // tyche

src/assembler/assembler.hh

@@ -5,6 +5,7 @@
 
 #include "lexer.hh"
 #include "../common/bytearray.hh"
+#include "../bytecode/bytecodeprototype.hh"
 
 namespace tyche::as {
 
@@ -16,6 +17,7 @@ public:
 
 private:
     Lexer lexer_;
+    bc::BytecodePrototype bp_;
 };
 
 } // tyche

src/assembler/lexer.cc

@@ -24,6 +24,9 @@ Token Lexer::ingest()
 
 void Lexer::ingest_next_token()
 {
+    size_t current_line_pos = 1;
+    size_t current_line = 1;
+
     if (pos_ >= source_.size()) {
         current_token_ = { TokenType::EOF_, "" };
         return;
@@ -49,7 +52,7 @@ void Lexer::ingest_next_token()
                 ++pos_;
                 break;
             } else if (pos_ >= source_.size()) {
-                throw AssemblyError("Unterminated string");
+                throw AssemblyError("Unterminated string", current_line, pos_ - current_line_pos);
             }
             token += source_.at(pos_++);
         }
@@ -62,7 +65,7 @@ void Lexer::ingest_next_token()
                 if (type == TokenType::Integer)
                     type = TokenType::Float;
                 else
-                    throw AssemblyError("Double point in floating point number");
+                    throw AssemblyError("Double point in floating point number", current_line, pos_ - current_line_pos);
             }
         }
     } else if (isalpha(c)) {
@@ -70,18 +73,23 @@ void Lexer::ingest_next_token()
         token += c;
         while (c = source_.at(++pos_), isalpha(c))
             token += c;
+    } else if (c == ':') {
+        type = TokenType::Colon;
+        ++pos_;
     } else if (c == '\n') {
         type = TokenType::Enter;
         ++pos_;
+        ++current_line;
+        current_line_pos = pos_;
     } else {
-        throw AssemblyError(std::string("Unexpected character '") + c + "' (ascii: " + std::to_string((int) c) + ")");
+        throw AssemblyError(std::string("Unexpected character '") + c + "' (ascii: " + std::to_string((int) c) + ")", current_line, pos_ - current_line_pos);
     }
 
     // skip ignored tokens
     while (pos_ < source_.size() && (source_.at(pos_) == ' ' || source_.at(pos_) == '\t' || source_.at(pos_) == '\r'))
         ++pos_;
 
-    current_token_ = { .type = type, .token = token };
+    current_token_ = { .type = type, .token = token, .line = current_line, .column = pos_ - current_line_pos };
 }
 
 } // tyche

src/assembler/lexer.hh

@@ -7,12 +7,14 @@
 namespace tyche::as {
 
 enum class TokenType {
-    BOF, Directive, Instruction, Integer, Float, String, Enter, EOF_
+    BOF, Directive, Instruction, Integer, Float, String, Enter, Colon, EOF_
 };
 
 struct Token {
     TokenType   type;
     std::string token;
+    size_t      line;
+    size_t      column;
 
     friend bool operator==(Token const& lhs, Token const& rhs) { return std::tie(lhs.type, lhs.token) == std::tie(rhs.type, rhs.token); }
 };