WIP code generation

Makefile

 CC=g++
 CCFLAGS=-g -W -Wall -O0 -std=c++2a -Wno-unused-parameter
 
-OBJS=Absyn.o Lexer.o Parser.o Printer.o TypeCheck.o Info.o Skeleton.o ParseError.o Compiler.o Quadruple.o
+OBJS=Absyn.o Lexer.o Parser.o Printer.o TypeCheck.o Info.o Skeleton.o ParseError.o Compiler.o Quadruple.o BasicBlock.o
 
 .PHONY : clean distclean
 
@@ -32,7 +32,7 @@ Skeleton.o : src/Skeleton.cpp src/Skeleton.h src/Absyn.h
 TypeCheck.o : src/TypeCheck.cpp src/TypeCheck.h src/Info.h src/InfoList.h src/Absyn.h src/ParseError.h
 	${CC} ${CCFLAGS} -c src/TypeCheck.cpp
 
-Compiler.o : src/Compiler.cpp src/Compiler.h src/TypeCheck.h src/Info.h src/InfoList.h src/Absyn.h src/ParseError.h
+Compiler.o : src/Compiler.cpp src/Compiler.h src/TypeCheck.h src/Info.h src/InfoList.h src/Absyn.h src/ParseError.h src/codeGen/Quadruple.h src/codeGen/Variable.h
 	${CC} ${CCFLAGS} -c src/Compiler.cpp
 
 Info.o : src/Info.cpp src/Info.h src/InfoList.h src/Absyn.h
@@ -47,6 +47,9 @@ Quadruple.o : src/codeGen/Quadruple.cpp src/Info.h src/InfoList.h src/Absyn.h sr
 Variable.o : src/codeGen/Quadruple.h src/codeGen/Variable.cpp src/Info.h src/InfoList.h src/Absyn.h
 	${CC} ${CCFLAGS} -c src/codeGen/Variable.cpp
 
+BasicBlock.o : src/codeGen/Quadruple.h src/codeGen/BasicBlock.h src/codeGen/BasicBlock.cpp src/codeGen/Variable.h src/Info.h src/InfoList.h src/Absyn.h
+	${CC} ${CCFLAGS} -c src/codeGen/BasicBlock.cpp
+
 Latte.o : src/Latte.cpp src/Parser.h src/Printer.h src/Absyn.h src/ParseError.h src/TypeCheck.h src/Compiler.h src/Info.h src/InfoList.h
 	${CC} ${CCFLAGS} -c src/Latte.cpp
 

hello32.s

@@ -12,6 +12,8 @@ hello:
 _start:
 pushl %ebp
 movl %esp, %ebp
+# subl $8, %esp
+andl $-16, %esp
 call main
 pushl %eax
 call exit
@@ -24,3 +26,6 @@ call printStr
 movl $0, %eax
 leave
 ret
+
+"fun test::label XD":
+ret

lib/runtime.c

@@ -45,3 +45,21 @@ void error() {
 	puts("runtime error");
 	exit(1);
 }
+
+char* __latte_mem_init(size_t size, void* virtTab) {
+	char *buf = calloc(len, size);
+	if (!buf) error();
+	*((void**)buf) = virtTab;
+	return buf;
+}
+char* __latte_mem_init_array(int len, size_t size, void* virtTab) {
+	if (len < 0) error();
+	char *buf = calloc(len, size);
+	if (!buf) error();
+	if (virtTab) {
+		for (size_t i = 0; i < len; i++) {
+			*((void**)(buf + i * size)) = virtTab;
+		}
+	}
+	return buf;
+}

src/Absyn.h

@@ -192,7 +192,7 @@ public:
 class Block : public Visitable
 {
 public:
-	std::weak_ptr<Binding> binding;
+	std::shared_ptr<Binding> binding;
 	std::weak_ptr<FunctionInfo> function;
 	virtual Block *clone() const = 0;
 
@@ -234,13 +234,14 @@ public:
 	bool isEqual(shared_ptr<T> f, bool sub = false) const { return isEqual((T*)&*f, sub); };
 	bool operator==(Type const & f) const { return isEqual(&f); }
 	bool operator!=(Type const & f) const { return !isEqual(&f); }
+	virtual size_t size() const = 0;
 };
 
 class Expr : public Visitable
 {
 public:
 	virtual Expr *clone() const = 0;
-
+	shared_ptr<Type> type;
 };
 
 class AddOp : public Visitable
@@ -656,6 +657,7 @@ public:
 			return true;
 		return false;
 	}
+	size_t size() const override { return 4; };
 };
 
 class Str : public Type
@@ -674,6 +676,7 @@ public:
 			return true;
 		return false;
 	}
+	size_t size() const override { return 4; };
 };
 
 class Bool : public Type
@@ -693,6 +696,7 @@ public:
 			return true;
 		return false;
 	}
+	size_t size() const override { return 4; };
 };
 
 class Void : public Type
@@ -712,6 +716,7 @@ public:
 			return true;
 		return false;
 	}
+	size_t size() const override { return 0; };
 };
 
 class Array : public Type
@@ -733,6 +738,7 @@ public:
 			return type_->isEqual(casted->type_, sub);
 		return false;
 	}
+	size_t size() const { return 4; } // wskaźnik na stertę
 };
 
 class ClassT : public Type
@@ -750,6 +756,7 @@ public:
 	void swap(ClassT &);
 	std::string printName() const { return pident_ ? ("class " + pident_->string_) : "class"; }
 	bool isEqual(Type const *other, bool sub = false) const;
+	size_t size() const override { return 4; };
 };
 
 class Fun : public Type
@@ -768,6 +775,7 @@ public:
 	void swap(Fun &);
 	std::string printName() const;
 	bool isEqual(Type const *other, bool sub = false) const;
+	size_t size() const override { return 0; };
 };
 
 class EVar : public Expr

src/Compiler.h

@@ -9,7 +9,10 @@
 #include "codeGen/Variable.h"
 #include "ParseError.h"
 #include "Info.h"
+#include "codeGen/Quadruple.h"
+#include "codeGen/BasicBlock.h"
 
+using Op = Quadruple::Op;
 class Compiler : public Skeleton
 {
 public:
@@ -23,9 +26,14 @@ private:
 	std::filesystem::path file;
 	std::stringstream buf;
 	shared_ptr<Scope> scope;
+	vector<VariablePtr> vars;
+	vector<QuadruplePtr> quads;
+	Quadruple::Op op;
 
 	VariablePtr lastVar;
 
+	void compileFunction(FunctionInfoPtr f);
+
 	VariablePtr evalExpr(Visitable *expr) {
 		if (!expr) throw runtime_error("No expr to eval");
 		lastVar = nullptr;
@@ -39,6 +47,80 @@ private:
 		lastVar = nullptr;
 		return ret;
 	};
+
+	std::string mangleFunctionName(FunctionInfoPtr f) const {
+		if (auto c = f->klass.lock()) {
+			return c->name + "::" + f->name;
+		}
+		return f->name;
+	};
+
+	std::string getVirtName(ClassInfoPtr c) const {
+		return c->name + ":virt_table";
+	};
+
+	VariablePtr alloc(VarInfoPtr info) {
+		if (info->loc) {
+			return info->loc;
+		}
+		auto v = make_shared<Variable>(info);
+		vars.emplace_back(v);
+		info->loc = v;
+		return v;
+	}
+	template<typename... Args> VariablePtr alloc(Args... args) {
+		auto v = make_shared<Variable>(args...);
+		vars.emplace_back(v);
+		return v;
+	}
+
+	void endBasicBlock();
+
+	void visitEVar(EVar *p) override;
+	void visitEIndexAcc(EIndexAcc *p) override;
+	void visitEClsMmbr(EClsMmbr *p) override;
+	void visitEApp(EApp *p) override;
+	void visitELitInt(ELitInt *p) override;
+	void visitELitTrue(ELitTrue *p) override;
+	void visitELitFalse(ELitFalse *p) override;
+	void visitEString(EString *p) override;
+	void visitENewArray(ENewArray *p) override;
+	void visitENewClass(ENewClass *p) override;
+	void visitNullCast(NullCast *p) override;
+	void visitNeg(Neg *p) override;
+	void visitNot(Not *p) override;
+	void visitEMul(EMul *p) override;
+	void visitEAdd(EAdd *p) override;
+	void visitERel(ERel *p) override;
+	void visitEAnd(EAnd *p) override;
+	void visitEOr(EOr *p) override;
+
+
+
+	void visitInit(Init *p) override;
+	void visitAss(Ass *p) override;
+	void visitIncr(Incr *p) override;
+	void visitDecr(Decr *p) override;
+	void visitRet(Ret *p) override;
+	void visitVRet(VRet *p) override;
+	void visitCond(Cond *p) override;
+	void visitCondElse(CondElse *p) override;
+	void visitWhile(While *p) override;
+	void visitSExp(SExp *p) override;
+	void visitForEach(ForEach *p) override;
+
+
+	void visitPlus(Plus *p) override { op = Op::Plus; };
+	void visitMinus(Minus *p) override { op = Op::Minus; };
+	void visitTimes(Times *p) override { op = Op::Mul; };
+	void visitDiv(Div *p) override { op = Op::Div; };
+	void visitMod(Mod *p) override { op = Op::Mod; };
+	void visitLTH(LTH *p) override { op = Op::LT; };
+	void visitLE(LE *p) override { op = Op::LE; };
+	void visitGTH(GTH *p) override { op = Op::GT; };
+	void visitGE(GE *p) override { op = Op::GE; };
+	void visitEQU(EQU *p) override { op = Op::EQ; };
+	void visitNE(NE *p) override { op = Op::NEQ; };
 };
 
 #endif

src/Info.cpp

@@ -24,14 +24,35 @@ Binding::Binding(shared_ptr<Binding> parent)
 
 }
 
-
-
 ClassInfo::ClassInfo(PIdent *ident, BindingPtr parent /*= nullptr*/)
 	: VarInfo(ident),
-	Binding(parent)
+	Binding(parent),
+	size(0), functionCount(0)
 {
 	type = make_shared<ClassT>(ident->clone());
 	type->binding = parent;
+}
+
+size_t ClassInfo::calculateSize() {
+	if (size) return size;
+	size = 4; // pointer to virtual methods table
+
+	if (auto p = getParent()) { // parent already has virt pointer included
+		p->calculateSize();
+		size = p->size;
+		functionCount = p->functionCount;
+	}
+
+	for (const auto& var : variables) {
+		var->offset = size;
+		size += var->type->size();
+	}
+
+	for (auto f : functions) {
+		f->offset = functionCount++;
+	}
+
+	return size;
 };
 
 Scope::Scope()

src/Info.h

@@ -26,6 +26,9 @@ public:
 	string name;
 	TypePtr type;
 	int lineLocation;
+	size_t offset;
+
+	VariablePtr loc;
 
 	bool operator<(const VarInfo &other) const {
 		return name != other.name ? name < other.name : type < other.type;
@@ -58,7 +61,7 @@ public:
 	Binding(BindingPtr parent = nullptr);
 	virtual ~Binding() {};
 
-	BindingPtr getParent() const { return parent.lock(); };
+	BindingPtr getParent() { return parent.lock(); };
 };
 
 class ClassInfo : public VarInfo, public Binding
@@ -68,7 +71,9 @@ public:
 	ClassInfo(PIdent *ident, BindingPtr parent = nullptr);
 
 	virtual string kind() const { return "class"; }
-	ClassInfoPtr getParent() const { return dynamic_pointer_cast<ClassInfo>(parent.lock()); };
+	ClassInfoPtr getParent() { return dynamic_pointer_cast<ClassInfo>(parent.lock()); };
+	size_t calculateSize();
+	size_t size, functionCount;
 };
 
 

src/TypeCheck.cpp

@@ -3,6 +3,7 @@
 #include <stdexcept>
 #include "Printer.h"
 #include <climits>
+#include <cassert>
 
 void TypeCheck::visitClassDef(ClassDef *t) {
 	const string name = t->getName()->string_;
@@ -116,7 +117,7 @@ void TypeCheck::visitClassFld(ClassFld *decl)
 
 void TypeCheck::visitBlk(Blk *blk)
 {
-	BindingPtr binding = blk->binding.lock();
+	BindingPtr binding = blk->binding/*.lock()*/;
 	if (!binding) {
 		binding = make_shared<Binding>(scope->currentBinding);
 		blk->binding = binding;
@@ -317,13 +318,12 @@ void TypeCheck::visitEClsMmbr(EClsMmbr *e_cls_mmbr)
 		throw ParseError("Class expected", e_cls_mmbr->expr_);
 	}
 	ClassInfoPtr klass = scope->classes[type->pident_];
-	if (klass != type->pident_->var.lock()) {
-		throw ParseError("ej lol inny var");
-	}
+	assert(klass == type->pident_->var.lock());
 	VarInfoPtr var = klass->variables[e_cls_mmbr->pident_];
 	if (!var || var == scope->variables.local(e_cls_mmbr->pident_->string_)) {
 		throw UndefinedError(e_cls_mmbr->pident_);
 	}
+	e_cls_mmbr->pident_->var = var;
 	lastType = var->type;
 }
 
@@ -392,19 +392,11 @@ void TypeCheck::visitENewArray(ENewArray *e)
 
 void TypeCheck::visitENewClass(ENewClass *e_new_class)
 {
-	// e_new_class->pident_->accept(this);
-	lastType = evalExpr<ClassT>(e_new_class->pident_);
-	// if (!e_new_class->pident_->var.lock()) {
-
-	// }
-	// ClassInfoPtr klass = dynamic_pointer_cast<ClassInfo>(e_new_class->pident_->var.lock());
-	// if (!klass) {
-	// 	throw ParseError("Class expected", e_new_class->pident_);
-	// }
-
-	// auto ret = make_shared<ClassT>(e_new_class->pident_); // make type
-	// ret->binding = scope->currentBinding;
-	// lastType = ret;
+	e_new_class->pident_->accept(this);
+	if (!dynamic_pointer_cast<ClassT>(lastType)) {
+		ClassT expect;
+		throw InvalidTypeError(expect, {lastType}, e_new_class);
+	}
 }
 
 void TypeCheck::visitNullCast(NullCast *null_cast)

src/TypeCheck.h

@@ -29,7 +29,7 @@ class TypeCheck : public Visitor
 	void setupEnv();
 
 	template<typename T>
-	shared_ptr<T> evalExpr(Visitable *expr) {
+	shared_ptr<T> evalExpr(Expr *expr) {
 		if (!expr) throw runtime_error("No expr to eval");
 		lastType = nullptr;
 		try {
@@ -42,11 +42,12 @@ class TypeCheck : public Visitor
 			T expect;
 			throw InvalidTypeError(expect, {lastType}, expr);
 		}
+		expr->type = lastType;
 		lastType = nullptr;
 		return ret;
 	};
 
-	shared_ptr<Type> evalExpr(Visitable *expr) {
+	shared_ptr<Type> evalExpr(Expr *expr) {
 		if (!expr) throw runtime_error("No expr to eval");
 		try {
 			expr->accept(this);
@@ -54,9 +55,12 @@ class TypeCheck : public Visitor
 			throw ParseError(err, expr);
 		}
 		if (!lastType) throw ParseError("No expression type", expr);
-		auto ret = lastType;
+		if (auto fun = dynamic_pointer_cast<Fun>(lastType)) {
+			throw ParseError("Unexpected function access", expr);
+		}
+		expr->type = lastType;
 		lastType = nullptr;
-		return ret;
+		return expr->type;
 	};
 public:
 	BindingPtr getParentBinding() const { return scope->currentClass ? static_pointer_cast<Binding>(scope->currentClass) : static_pointer_cast<Binding>(scope); }

src/TypeDefs.h

@@ -6,16 +6,21 @@
 using namespace std;
 
 class VarInfo;
-class FunctionInfo;
-class ClassInfo;
-class Binding;
-class Type;
 using VarInfoPtr = shared_ptr<VarInfo>;
+class FunctionInfo;
 using FunctionInfoPtr = shared_ptr<FunctionInfo>;
+class ClassInfo;
 using ClassInfoPtr = shared_ptr<ClassInfo>;
+class Binding;
 using BindingPtr = shared_ptr<Binding>;
+class Type;
 using TypePtr = shared_ptr<Type>;
-
+class Variable;
+using VariablePtr = shared_ptr<Variable>;
+class Quadruple;
+using QuadruplePtr = shared_ptr<Quadruple>;
+class BasicBlock;
+using BasicBlockPtr = shared_ptr<BasicBlock>;
 
 class Visitable;
 class Program;

src/codeGen/BasicBlock.cpp

+//
+// Created by zygzagz on 03.01.2021.
+//
+
+#include "BasicBlock.h"

src/codeGen/BasicBlock.h

+//
+// Created by zygzagz on 03.01.2021.
+//
+
+#ifndef ZAD2_BASICBLOCK_H
+#define ZAD2_BASICBLOCK_H
+#include "../TypeDefs.h"
+#include <vector>
+
+using namespace std;
+
+class BasicBlock {
+	vector<QuadruplePtr> quads;
+	vector<BasicBlockPtr> in, out;
+};
+
+
+#endif //ZAD2_BASICBLOCK_H

src/codeGen/Quadruple.h

 #ifndef ZAD2_QUAD_H
 #define ZAD2_QUAD_H
 #include <string>
+#include <utility>
 
 #include "../Info.h"
 #include "Variable.h"
 using namespace std;
 
-class Quadruple {
-public:
-	enum Op {
-		UNARY,
-		Neg,
-		Not,
-		BINARY,
-		Plus,
-		Minus,
-		Mul,
-		Div,
-		And,
-		Or,
-		Xor,
+static const std::string opNames[] = { "_U", "-", "!", "", "_UE",
+                                       "_B", "+", "-", "*", "/", "%", "&", "|", "^", "_BE",
+                                       "_C", "<", "<=", "==", "!=", ">=", ">", "_CE"};
+
+class Quadruple : std::enable_shared_from_this<Quadruple> {
+public:
+	class Op {
+	public:
+		enum OpType {
+			UNARY,
+			Neg, Not, Copy, UNARY_END,
+			BINARY,
+			Plus, Minus, Mul, Div, Mod, And, Or, Xor, BINARY_END,
+			CMP,
+			LT, LE, EQ, NEQ, GE, GT, CMP_END
+		};
+		OpType op;
+
+		Op(OpType op = UNARY) : op(op) {};
+		operator OpType() const { return op; };
+
+		static OpType kind(OpType op) {
+			if (op <= UNARY_END) return UNARY;
+			if (op <= BINARY_END) return BINARY;
+			return CMP;
+		};
+		static const std::string& name(OpType op) {
+			return opNames[op];
+		}
 	};
 
-	string label;
+	virtual ~Quadruple() {};
+	virtual std::string toString() const = 0;
 };
 
-class QAssign : Quadruple {
+class QWriteVar : public Quadruple {
+public:
 	VariablePtr loc;
+	explicit QWriteVar(VariablePtr loc) : Quadruple(), loc(std::move(loc)) {};
+
+	std::string toString() const override { return loc ? ("\t" + loc->name + " := ") : "\t"; }
+};
+
+class QLabel : public Quadruple {
+public:
+	string label;
+	std::string toString() const override { return "\"" + label + "\":"; }
+	QLabel(std::string comment) : label(comment) {}
+};
+
+class QAssign : public QWriteVar {
+public:
 	Op op;
 	vector<VariablePtr> args;
-	VarInfoPtr varInfo;
+
+	QAssign(VariablePtr loc, Op op, vector<VariablePtr> list) : QWriteVar(std::move(loc)), op(op), args(std::move(list)) {};
+	QAssign(VariablePtr loc, VariablePtr l, Op op, VariablePtr r) : QWriteVar(std::move(loc)), op(op), args({std::move(l), std::move(r)}) {};
+	QAssign(VariablePtr loc, Op op, VariablePtr x) : QWriteVar(std::move(loc)), op(op), args({std::move(x)}) {};
+
+	std::string toString() const override {
+		if (args.size() == 1)
+			return QWriteVar::toString() + Op::name(op) + " " + args[0]->name;
+		else
+			return QWriteVar::toString() + args[0]->name + " " + Op::name(op) + " " + args[1]->name;
+	}
+};
+
+class QJump : public Quadruple {
+public:
+	shared_ptr<QLabel> target;
+	explicit QJump(shared_ptr<QLabel> target) : target(std::move(target)) {};
+
+	std::string toString() const override {
+		return "\tjump " + target->label;
+	}
+};
+
+class QJumpCond : public QJump {
+public:
+	VariablePtr left;
+	Op op;
+	VariablePtr right;
+	QJumpCond(shared_ptr<QLabel> to, VariablePtr left, Op op, VariablePtr right)
+			: QJump(std::move(to)), left(std::move(left)), op(op), right(std::move(right)) {};
+
+	QJumpCond(shared_ptr<QLabel> to, Op op, VariablePtr right)
+			: QJumpCond(std::move(to), nullptr, op, std::move(right)) {};
+
+	std::string toString() const override {
+		if (!left)
+			return "\tjump \"" + target->label + "\" if " + Op::name(op) + " " + right->name;
+		else
+			return "\tjump \"" + target->label + "\" if " + left->name + " " + Op::name(op) + " " + right->name;
+	}
+};
+
+class QParam : public Quadruple {
+public:
+	VariablePtr param;
+	int num;
+
+	QParam(VariablePtr param, int num) : param(std::move(param)), num(num) {};
+
+	std::string toString() const override {
+		if (num == 0) {
+			return "\tparam self " + param->name;
+		} else {
+			return "\tparam #" + to_string(num) + " <- " + param->name;
+		}
+	}
+};
+
+class QCall : public QWriteVar {
+public:
+	FunctionInfoPtr fn;
+	int params;
+	VariablePtr self;
+	QCall(VariablePtr loc, FunctionInfoPtr fn, int params, VariablePtr self)
+		: QWriteVar(std::move(loc)), fn(std::move(fn)), params(params), self(std::move(self)) {};
+
+	std::string toString() const override {
+		if (self) {
+			return QWriteVar::toString() + "call " + fn->name + " of " + self->name + " with " + to_string(params) + " params";
+		} else {
+			return QWriteVar::toString() + "call " + fn->name + " with " + to_string(params) + " params";
+		}
+	}
+};
+
+class QReturn : public Quadruple {
+public:
+	VariablePtr ret;
+	explicit QReturn(VariablePtr ret) : ret(std::move(ret)) {};
+
+	std::string toString() const override {
+		if (ret) {
+			return "\treturn " + ret->name;
+		} else {
+			return "\treturn";
+		}
+	}
+};
+
+class QAccess : public QWriteVar {
+public:
+	QAccess(VariablePtr loc, VariablePtr base, VariablePtr index, int multiplier, int offset)
+		: QWriteVar(std::move(loc)), base(std::move(base)), index(std::move(index)), multiplier(multiplier), offset(offset)
+	{};
+	// leal    8(,%eax,4), %eax         # Arithmetic: multiply eax by 4 and add 8
+	// leal    (%edx,%eax,2), %eax      # Arithmetic: multiply eax by 2 and add edx
+	VariablePtr base;
+	VariablePtr index;
+	int multiplier;
+	int offset;
+
+	std::string toString() const override {
+		auto ret = QWriteVar::toString() + "[" + base->name;
+		if (multiplier || !(index->constExpr || !index->val)) ret += " + " + to_string(multiplier) + "*" + index->name;
+		if (offset) ret += " + " + to_string(offset);
+		return ret + "]";
+	}
+};
+
+class QAlloc : public QWriteVar {
+public:
+	size_t size;
+	VariablePtr count;
+	std::string virtSymbol;
+	QAlloc(VariablePtr loc, size_t size, std::string virtSymbol, VariablePtr count = nullptr)
+		: QWriteVar(std::move(loc)), size(size), count(std::move(count)), virtSymbol(std::move(virtSymbol)) {};
+
+	std::string toString() const override {
+		std::string ret = QWriteVar::toString() + "alloc (" + to_string(size) + ")";
+		if (count) { ret += " [" + count->name + "]"; }
+		if (!virtSymbol.empty()) { ret += " " + virtSymbol; }
+		return ret;
+	}
 };
 
 

src/codeGen/Variable.h

@@ -5,14 +5,26 @@
 #ifndef ZAD2_VARIABLE_H
 #define ZAD2_VARIABLE_H
 
+#include <utility>
+
+#include "../TypeDefs.h"
 
 class Variable : std::enable_shared_from_this<Variable> {
+public:
+	Variable() = default;
+	explicit Variable(VarInfoPtr info) : info(std::move(info)), constExpr(false), val(0) {};
+	explicit Variable(int constVal) : type(new Int), constExpr(true), val(constVal) {};
+	explicit Variable(std::string symbolName) {};
+	VarInfoPtr info;
+	TypePtr type;
+	bool constExpr;
+	int val;
+	std::string name;
+	// chcemy znać lokalizację w pamięci gdzie zapisać z powrotem i gdzie leży ogólnie
+	// lok. może nie być, jeśli to tymczasowa
 	// registers
 	// is mem?
 	// where in mem - id or offset
-
 };
 
-using VariablePtr = shared_ptr<Variable>;
-
 #endif //ZAD2_VARIABLE_H