Chapter 28.1

1 files changed, 39 insertions, 24 deletions

diff --git a/clox/src/compiler.c b/clox/src/compiler.c
index 6ab4855..31a7937 100644
--- a/clox/src/compiler.c
+++ b/clox/src/compiler.c
@@ -374,6 +374,15 @@ static void function(FunctionType type) {
   }
 }
 
+static void method() {
+  consume(TOKEN_IDENTIFIER, "Expect method name.");
+  uint8_t constant = identifierConstant(&parser.previous);
+
+  FunctionType type = TYPE_FUNCTION;
+  function(type);
+  emitBytes(OP_METHOD, constant);
+}
+
 static bool identifiersEqual(Token *a, Token *b) {
   if (a->length != b->length)
     return false;
@@ -411,16 +420,46 @@ static void declareVariable() {
   addLocal(*name);
 }
 
+static void namedVariable(Token name, bool canAssign) {
+  uint8_t getOp, setOp;
+  int arg = resolveLocal(current, &name);
+
+  if (arg != -1) {
+    getOp = OP_GET_LOCAL;
+    setOp = OP_SET_LOCAL;
+  } else if ((arg = resolveUpvalue(current, &name)) != -1) {
+    getOp = OP_GET_UPVALUE;
+    setOp = OP_SET_UPVALUE;
+  } else {
+    arg = identifierConstant(&name);
+    getOp = OP_GET_GLOBAL;
+    setOp = OP_SET_GLOBAL;
+  }
+
+  if (canAssign && match(TOKEN_EQUAL)) {
+    expression();
+    emitBytes(setOp, arg);
+  } else {
+    emitBytes(getOp, arg);
+  }
+}
+
 static void classDeclaration() {
   consume(TOKEN_IDENTIFIER, "Expect class name");
+  Token className = parser.previous;
   uint8_t nameConstant = identifierConstant(&parser.previous);
   declareVariable();
 
   emitBytes(OP_CLASS, nameConstant);
   defineVariable(nameConstant);
 
+  namedVariable(className, false);
   consume(TOKEN_LEFT_BRACE, "Expect '{' before class body.");
+  while (!check(TOKEN_RIGHT_BRACE) && !check(TOKEN_EOF)) {
+    method();
+  }
   consume(TOKEN_RIGHT_BRACE, "Expect '}' after class body.");
+  emitByte(OP_POP);
 }
 
 static void markInitialized() {
@@ -643,30 +682,6 @@ static void string(bool canAssign) {
       copyString(parser.previous.start + 1, parser.previous.length - 2)));
 }
 
-static void namedVariable(Token name, bool canAssign) {
-  uint8_t getOp, setOp;
-  int arg = resolveLocal(current, &name);
-
-  if (arg != -1) {
-    getOp = OP_GET_LOCAL;
-    setOp = OP_SET_LOCAL;
-  } else if ((arg = resolveUpvalue(current, &name)) != -1) {
-    getOp = OP_GET_UPVALUE;
-    setOp = OP_SET_UPVALUE;
-  } else {
-    arg = identifierConstant(&name);
-    getOp = OP_GET_GLOBAL;
-    setOp = OP_SET_GLOBAL;
-  }
-
-  if (canAssign && match(TOKEN_EQUAL)) {
-    expression();
-    emitBytes(setOp, arg);
-  } else {
-    emitBytes(getOp, arg);
-  }
-}
-
 static void variable(bool canAssign) {
   namedVariable(parser.previous, canAssign);
 }