The value is displaying correctly, but not the type

source/compiler.c

@@ -88,7 +88,7 @@ static int writeNodeCompoundToCache(Compiler* compiler, Node* node) {
 		}
 
 		//push the store to the cache, with instructions about how pack it
-		index = pushLiteralArray(&compiler->literalCache, TO_DICTIONARY_LITERAL(store));
+		index = pushLiteralArray(&compiler->literalCache, TO_DICTIONARY_LITERAL(store)); //pushed as an array, so below can recognize it
 	}
 	else if (node->compound.literalType == LITERAL_ARRAY) {
 		//ensure each literal value is in the cache, individually
@@ -128,7 +128,7 @@ static int writeNodeCompoundToCache(Compiler* compiler, Node* node) {
 	return index;
 }
 
-static int writeLiteralTypeToCache(Compiler* compiler, Literal literal) {
+static int writeLiteralTypeToCache(LiteralArray* parent, Literal literal) {
 	int index = -1;
 
 	//for now, stored as an array
@@ -136,9 +136,9 @@ static int writeLiteralTypeToCache(Compiler* compiler, Literal literal) {
 	initLiteralArray(store);
 
 	//save the mask to the store
-	int maskIndex = findLiteralIndex(store, TO_INTEGER_LITERAL(AS_TYPE(literal).mask));
+	int maskIndex = findLiteralIndex(parent, TO_INTEGER_LITERAL(AS_TYPE(literal).mask));
 	if (maskIndex < 0) {
-		maskIndex = pushLiteralArray(store, TO_INTEGER_LITERAL(AS_TYPE(literal).mask));
+		maskIndex = pushLiteralArray(parent, TO_INTEGER_LITERAL(AS_TYPE(literal).mask));
 	}
 
 	pushLiteralArray(store, TO_INTEGER_LITERAL(maskIndex));
@@ -146,13 +146,13 @@ static int writeLiteralTypeToCache(Compiler* compiler, Literal literal) {
 	//if it's a compound type, recurse
 	if (AS_TYPE(literal).mask & (MASK_ARRAY|MASK_DICTIONARY)) {
 		for (int i = 0; i < AS_TYPE(literal).count; i++) {
-			int subIndex = writeLiteralTypeToCache(compiler, ((Literal*)(AS_TYPE(literal).subtypes))[i]);
+			int subIndex = writeLiteralTypeToCache(parent, ((Literal*)(AS_TYPE(literal).subtypes))[i]);
 			pushLiteralArray(store, TO_INTEGER_LITERAL(subIndex));
 		}
 	}
 
-	//push the store to the compiler
-	index = pushLiteralArray(&compiler->literalCache, TO_ARRAY_LITERAL(store));
+	//push the store to the parent
+	index = pushLiteralArray(parent, TO_ARRAY_LITERAL(store));
 
 	return index;
 }
@@ -250,8 +250,8 @@ void writeCompiler(Compiler* compiler, Node* node) {
 			fprintf(stderr, "[Internal] NODE_PAIR encountered in writeCompiler()");
 		break;
 
-		case NODE_VAR_TYPES: {
-			int index = writeLiteralTypeToCache(compiler, node->varTypes.typeLiteral);
+		case NODE_VAR_TYPES: { //TODO: the "type" keyword
+			int index = writeLiteralTypeToCache(&compiler->literalCache, node->varTypes.typeLiteral);
 
 			//embed the info into the bytecode
 			if (index >= 256) {
@@ -269,9 +269,39 @@ void writeCompiler(Compiler* compiler, Node* node) {
 		}
 		break;
 
-		// case NODE_VAR_DECL:
-		// 	//TODO: OP_VAR_DECL + OP_VAR_ASSIGN
-		// break;
+		case NODE_VAR_DECL: {
+			//first, embed the expression (leaves it on the stack)
+			writeCompiler(compiler, node->varDecl.expression);
+
+			//write each piece of the declaration to the bytecode
+			int identifierIndex = findLiteralIndex(&compiler->literalCache, node->varDecl.identifier);
+			if (identifierIndex < 0) {
+				identifierIndex = pushLiteralArray(&compiler->literalCache, node->varDecl.identifier);
+			}
+
+			int typeIndex = writeLiteralTypeToCache(&compiler->literalCache, node->varDecl.typeLiteral);
+
+			//embed the info into the bytecode
+			if (identifierIndex >= 256 || typeIndex >= 256) {
+				//push a "long" declaration
+				compiler->bytecode[compiler->count++] = OP_VAR_DECL_LONG; //1 byte
+
+				*((unsigned short*)(compiler->bytecode + compiler->count)) = (unsigned short)identifierIndex; //2 bytes
+				compiler->count += sizeof(unsigned short);
+
+				*((unsigned short*)(compiler->bytecode + compiler->count)) = (unsigned short)typeIndex; //2 bytes
+				compiler->count += sizeof(unsigned short);
+			}
+			else {
+				//push a declaration
+				compiler->bytecode[compiler->count++] = OP_VAR_DECL; //1 byte
+				compiler->bytecode[compiler->count++] = (unsigned char)identifierIndex; //1 byte
+				compiler->bytecode[compiler->count++] = (unsigned char)typeIndex; //1 byte
+			}
+		}
+		break;
+
+		//TODO: OP_VAR_ASSIGN
 	}
 }
 
@@ -428,6 +458,19 @@ unsigned char* collateCompiler(Compiler* compiler, int* size) {
 			}
 			break;
 
+			case LITERAL_IDENTIFIER: {
+				emitByte(&collation, &capacity, &count, LITERAL_IDENTIFIER);
+
+				Literal identifier = compiler->literalCache.literals[i];
+
+				for (int c = 0; c < STRLEN_I(identifier); c++) {
+					emitByte(&collation, &capacity, &count, AS_IDENTIFIER(identifier)[c]);
+				}
+
+				emitByte(&collation, &capacity, &count, '\0'); //terminate the string
+			}
+			break;
+
 			case LITERAL_TYPE: {
 				emitByte(&collation, &capacity, &count, LITERAL_TYPE);
 

source/interpreter.c

@@ -250,6 +250,34 @@ static bool execArithmetic(Interpreter* interpreter, Opcode opcode) {
 	return false;
 }
 
+static bool execVarDecl(Interpreter* interpreter, bool lng) {
+	//read the index in the cache
+	int identifierIndex = 0;
+	int typeIndex = 0;
+
+	if (lng) {
+		identifierIndex = (int)readShort(interpreter->bytecode, &interpreter->count);
+		typeIndex = (int)readShort(interpreter->bytecode, &interpreter->count);
+	}
+	else {
+		identifierIndex = (int)readByte(interpreter->bytecode, &interpreter->count);
+		typeIndex = (int)readByte(interpreter->bytecode, &interpreter->count);
+	}
+
+	Literal identifier = interpreter->literalCache.literals[identifierIndex];
+	Literal type = interpreter->literalCache.literals[typeIndex];
+
+	if (!declareScopeVariable(interpreter->scope, identifier, type)) {
+		return false;
+	}
+
+	if (!setScopeVariable(interpreter->scope, identifier, popLiteralArray(&interpreter->stack) )) {
+		return false;
+	}
+
+	return true;
+}
+
 //the heart of toy
 static void execInterpreter(Interpreter* interpreter) {
 	unsigned char opcode = readByte(interpreter->bytecode, &interpreter->count);
@@ -307,6 +335,15 @@ static void execInterpreter(Interpreter* interpreter) {
 				interpreter->scope = popScope(interpreter->scope);
 			break;
 
+			//TODO: type declarations
+
+			case OP_VAR_DECL:
+			case OP_VAR_DECL_LONG:
+				if (!execVarDecl(interpreter, opcode == OP_LITERAL_LONG)) {
+					return;
+				}
+			break;
+
 			default:
 				printf("Unknown opcode found %d, terminating\n", opcode);
 				printLiteralArray(&interpreter->stack, "\n");
@@ -449,6 +486,43 @@ void runInterpreter(Interpreter* interpreter) {
 				pushLiteralArray(&interpreter->literalCache, TO_DICTIONARY_LITERAL(dictionary));
 			}
 			break;
+
+			//TODO: functions
+
+			case LITERAL_IDENTIFIER: {
+				char* str = readString(interpreter->bytecode, &interpreter->count);
+
+				Literal identifier = TO_IDENTIFIER_LITERAL(str);
+
+				pushLiteralArray(&interpreter->literalCache, identifier);
+
+				if (command.verbose) {
+					printf("(identifier %s)\n", AS_IDENTIFIER(identifier));
+				}
+			}
+			break;
+
+			case LITERAL_TYPE: {
+				Literal typeLiteral;
+
+				// read the mask
+				unsigned char mask = readByte(interpreter->bytecode, &interpreter->count);
+
+				typeLiteral = TO_TYPE_LITERAL(mask);
+
+				AS_TYPE(typeLiteral).count = readShort(interpreter->bytecode, &interpreter->count);
+
+				//if it's got subtypes, grab them from the existing cache
+				if (AS_TYPE(typeLiteral).count > 0) {
+					AS_TYPE(typeLiteral).subtypes = ALLOCATE(Literal, AS_TYPE(typeLiteral).count);
+					for (int i = 0; i < AS_TYPE(typeLiteral).count; i++) {
+						//read each index
+						int index = readShort(interpreter->bytecode, &interpreter->count);
+						((Literal*)(AS_TYPE(typeLiteral).subtypes))[i] = interpreter->literalCache.literals[index];
+					}
+				}
+			}
+			break;
 		}
 	}
 

source/opcodes.h

@@ -28,7 +28,8 @@ typedef enum Opcode {
 	OP_TYPE_DECL,		//declare a type to be used (as a literal)
 	OP_TYPE_DECL_LONG,	//declare a type to be used (as a long literal)
 
-	// OP_VAR_DECL,   //stack: literal name, literal type (referenced by array index)
+	OP_VAR_DECL,
+	OP_VAR_DECL_LONG,
 	// OP_VAR_ASSIGN, //stack: literal name, literal value
 
 	//meta

source/parser.c

@@ -801,25 +801,18 @@ static Literal readTypeToLiteral(Parser* parser) {
 	return literal;
 }
 
-static void readVarType(Parser* parser, Node** nodeHandle) {
-	//TODO: custom types with the "type" keyword
-
-	//get the type literal
-	Literal type = readTypeToLiteral(parser);
-
-	//generate the node
-	emitNodeVarTypes(nodeHandle, type);
-}
-
 static void varDecl(Parser* parser, Node** nodeHandle) {
 	//read the identifier
 	consume(parser, TOKEN_IDENTIFIER, "Expected identifier after var keyword");
 	Token identifierToken = parser->previous;
 
+	Literal identifier = TO_IDENTIFIER_LITERAL(identifierToken.lexeme);
+	identifier.as.identifier.length = identifierToken.length; //BUGFIX
+
 	//read the type, if present
-	Node* typeNode = NULL;
+	Literal typeLiteral;
 	if (match(parser, TOKEN_COLON)) {
-		readVarType(parser, &typeNode);
+		typeLiteral = readTypeToLiteral(parser);
 	}
 
 	//variable definition is an expression
@@ -830,8 +823,8 @@ static void varDecl(Parser* parser, Node** nodeHandle) {
 
 	//TODO: static type checking?
 
-	//finally
-	// emitNodeVarDecl(nodeHandle, TO_IDENTIFIER_LITERAL(identifierToken.lexeme), typeNode, expressionNode);
+	//declare it
+	emitNodeVarDecl(nodeHandle, identifier, typeLiteral, expressionNode);
 
 	consume(parser, TOKEN_SEMICOLON, "Expected ';' at end of var declaration");
 }

source/repl_main.c

@@ -105,6 +105,19 @@ void runBinary(unsigned char* tb, size_t size) {
 	Interpreter interpreter;
 	initInterpreter(&interpreter, tb, size);
 	runInterpreter(&interpreter);
+
+	//DEBUG
+	Literal lit;
+
+	printf("DEBUG> ");
+	if (getScopeVariable(interpreter.scope, TO_IDENTIFIER_LITERAL("name"), &lit)) {
+		printLiteral(lit);
+	}
+	else {
+		printf("Failed");
+	}
+	printf("\n");
+
 	freeInterpreter(&interpreter);
 }
 

source/scope.c

@@ -44,7 +44,10 @@ Scope* popScope(Scope* scope) {
 }
 
 //returns false if error
-bool declareScopeVariable(Scope* scope, Literal key) {
+bool declareScopeVariable(Scope* scope, Literal key, Literal type) {
+	//store the type, for later checking on assignment
+	//TODO
+
 	//don't redefine a variable within this scope
 	if (existsLiteralDictionary(&scope->variables, key)) {
 		return false;

source/scope.h

@@ -12,7 +12,7 @@ Scope* pushScope(Scope* scope);
 Scope* popScope(Scope* scope);
 
 //returns false if error
-bool declareScopeVariable(Scope* scope, Literal key);
+bool declareScopeVariable(Scope* scope, Literal key, Literal type);
 
 //return false if undefined
 bool setScopeVariable(Scope* scope, Literal key, Literal value);