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Got past temporary variable deallocation bug. Now working on functions.

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This commit is contained in:
Samuel D. Crow
2021-04-08 15:31:36 -05:00
parent 8797cb8870
commit d37eb38ad1
7 changed files with 258 additions and 100 deletions
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35
yab2cpp.h
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@@ -60,7 +60,9 @@ enum COMPILE_ERRORS:unsigned int
extern enum COMPILE_ERRORS errorLevel;
extern unsigned int indentLevel;
/*TODO: Replace scopeGlobal with currentFunc==0*/
extern bool scopeGlobal;
extern unsigned int currentFunc;
/* flags used internally by the compiler */
extern bool COMPILE;
@@ -134,6 +136,7 @@ enum SCOPES:unsigned int
enum OPERATORS:unsigned int
{
O_NOP,
O_PLUS,
O_MINUS,
O_MULTIPLY,
@@ -247,8 +250,7 @@ public:
/* Terminal expression node */
expression(operands *x);
virtual ~expression()
{}
virtual ~expression();
};
/* parent class of all code types */
@@ -357,12 +359,14 @@ public:
class variableType:public operands
{
enum SCOPES myScope;
unsigned int localID;
public:
static variableType *getOrCreateVar(string &name, enum TYPES t);
virtual string boxName();
void assignment(expression *value);
/* always call generateBox() after new variableType() */
variableType(enum SCOPES s, string &name, enum TYPES t);
variableType(enum SCOPES s, string &name, enum TYPES t, unsigned int fnID);
variableType();
~variableType()
{}
@@ -400,42 +404,43 @@ public:
virtual ~forLoop();
};
class fn:codeType
class fn
{
static unordered_map<string, unique_ptr<fn> > functions;
static list<fn *> callStack;
static unsigned int nextID;
list<variableType * >params;
string funcName;
unsigned int id;
enum CODES type;
enum TYPES kind;
operands *rc;
/* two labels common to all subroutine calls */
label *startAddr;
label *ret;
/* private constructor used by generateGosub and generateOnNSub*/
fn(label *gosub);
/* stamdard constructor called by declare */
fn(enum CODES t, operands *returnCode=nullptr);
public:
static void dumpCallStack();
static fn *getCurrentSub();
static fn *getSub(string &name);
static void generateGosub(label * sub);
/* must be called after label::generateOnNSkip */
static void generateOnNSub(expression *e, unsigned int skip);
enum CODES getType() const {return this->type;}
unsigned int getID() const {return this->id;}
int getNumParams() const {return this->params.size();}
size_t getNumParams() const {return this->params.size();}
void addParameter(variableType *);
operands *generateCall(string &name, list<operands *>&paramList);
/* standard return is for call */
void generateReturn(expression *expr);
/* parameterless return is for gosub */
void generateReturn();
virtual void generateBreak();
virtual void close();
fn(string &name, enum CODES t, operands *returnCode=nullptr);
virtual ~fn()
{}
static fn *declare(string &name, enum CODES t, operands *returnCode=nullptr);
static void dumpFunctionIDs();
/* is called only by unique_ptr in static "functions" hash table */
virtual ~fn();
};
class printSegment