313 lines
8.0 KiB
C
313 lines
8.0 KiB
C
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include <pthread.h>
|
|
#include "compiler.h"
|
|
#include "compiler-scopes.h"
|
|
|
|
typedef enum { local, staticseg, arg, fieldseg } MEMSEGMENT;
|
|
char* memsegnames[] = { "local", "static", "argument", "this" };
|
|
|
|
// Error messages
|
|
void doubledeclaration(const char* name, DEBUGINFO* d1, DEBUGINFO* d2);
|
|
void ensurenoduplicate(SCOPE* s, char* name);
|
|
|
|
// Getters
|
|
VAR* getvarinvars(VAR* vars, const char* name);
|
|
CLASS* getclass(SCOPE* s, const char* name);
|
|
SUBROUTDEC* getsubroutdecfromlist(SUBROUTDEC* start, char* name);
|
|
SUBROUTDEC* getmethod(SCOPE* s, VAR* parent, SUBROUTCALL* call);
|
|
SUBROUTDEC* getfunction(SCOPE* s, SUBROUTCALL* call);
|
|
SUBROUTDEC* getsubroutdecwithparent(SCOPE* s, SUBROUTCALL* call, VAR** varret);
|
|
SUBROUTDEC* getsubroutdecwithoutparent(SCOPE* s, SUBROUTCALL* call);
|
|
SUBROUTDEC* getsubroutdec(SCOPE* s, const char* name);
|
|
|
|
// Scope adding
|
|
VAR* mkvar(char* type, char* name, bool primitive, DEBUGINFO* debug, MEMSEGMENT seg, int i);
|
|
void addvar(SCOPE* s, VAR** dest, VAR* v);
|
|
void addlocalvar(SCOPE* s, VARDEC* v, int* i);
|
|
void addstaticvar(SCOPE* s, CLASSVARDEC* v);
|
|
void addfield(SCOPE* s, CLASSVARDEC* v, int* i);
|
|
void addclassvardec(SCOPE* s, CLASSVARDEC* v, int* i);
|
|
void addparameter(SCOPE* s, PARAMETER* p, int* i);
|
|
|
|
// Error messages
|
|
void doubledeclaration(const char* name, DEBUGINFO* d1, DEBUGINFO* d2) {
|
|
eprintf("Double declaration of '%s' at '%s', line %i; previously defined at '%s', line %i\n",
|
|
name, d1->file, d1->definedat, d2->file, d2->definedat);
|
|
exit(1);
|
|
}
|
|
|
|
void notdeclared(const char* name, DEBUGINFO* debug) {
|
|
eprintf("'%s' not declared; file '%s', line %i\n", name, debug->file, debug->definedat);
|
|
exit(1);
|
|
}
|
|
|
|
void invalidparent(SUBROUTCALL* call) {
|
|
eprintf("Invalid subroutine parent '%s'; file '%s', line %i\n", call->parentname, call->debug->file, call->debug->definedat);
|
|
exit(1);
|
|
}
|
|
|
|
void ensurenoduplicate(SCOPE* s, char* name) {
|
|
VAR* v = getvar(s, name);
|
|
if(v != NULL)
|
|
doubledeclaration(name, s->currdebug, v->debug);
|
|
|
|
CLASS* c = getclass(s, name);
|
|
if(c != NULL)
|
|
doubledeclaration(name, s->currdebug, c->debug);
|
|
|
|
SUBROUTDEC* sr = getsubroutdec(s, name);
|
|
if(sr != NULL)
|
|
doubledeclaration(name, s->currdebug, sr->debug);
|
|
}
|
|
|
|
// Scope handling
|
|
SCOPE* mkscope(SCOPE* prev) {
|
|
SCOPE* s = (SCOPE*)malloc(sizeof(SCOPE));
|
|
s->previous = prev;
|
|
if(prev != NULL)
|
|
s->compiler = prev->compiler;
|
|
s->localvars = NULL;
|
|
s->fields = NULL;
|
|
s->staticvars = NULL;
|
|
s->parameters = NULL;
|
|
s->classes = NULL;
|
|
s->subroutines = NULL;
|
|
return s;
|
|
}
|
|
|
|
// Getters
|
|
VAR* getvarinvars(VAR* vars, const char* name) {
|
|
while(vars != NULL) {
|
|
if(!strcmp(vars->name, name))
|
|
return vars;
|
|
vars = vars->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
VAR* getvar(SCOPE* s, const char* name) {
|
|
VAR* var = getvarinvars(s->localvars, name);
|
|
if(var != NULL)
|
|
return var;
|
|
var = getvarinvars(s->parameters, name);
|
|
if(var != NULL)
|
|
return var;
|
|
var = getvarinvars(s->fields, name);
|
|
if(var != NULL)
|
|
return var;
|
|
var = getvarinvars(s->staticvars, name);
|
|
if(var != NULL)
|
|
return var;
|
|
if(s->previous != NULL)
|
|
return getvar(s->previous, name);
|
|
return NULL;
|
|
}
|
|
|
|
VAR* getvarmustexist(SCOPE* s, DEBUGINFO* d, const char* name) {
|
|
VAR* v = getvar(s, name);
|
|
if(v == NULL)
|
|
notdeclared(name, d);
|
|
return v;
|
|
}
|
|
|
|
CLASS* getclass(SCOPE* s, const char* name) {
|
|
CLASS* curr = s->classes;
|
|
while(curr != NULL) {
|
|
if(!strcmp(curr->name, name))
|
|
return curr;
|
|
curr = curr->next;
|
|
}
|
|
if(s->previous != NULL)
|
|
return getclass(s->previous, name);
|
|
return NULL;
|
|
}
|
|
|
|
SUBROUTDEC* getsubroutdecfromlist(SUBROUTDEC* start, char* name) {
|
|
while(start != NULL) {
|
|
if(!strcmp(start->name, name))
|
|
return start;
|
|
start = start->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
SUBROUTDEC* getmethod(SCOPE* s, VAR* parent, SUBROUTCALL* call) {
|
|
CLASS* c = getclass(s, parent->type);
|
|
SUBROUTDEC* d = getsubroutdecfromlist(c->subroutdecs, call->name);
|
|
if(d == NULL)
|
|
return NULL;
|
|
if(d->subroutclass != method) {
|
|
eprintf("Calling a function/constructor as if it were a method; file '%s', line %i\n", call->debug->file, call->debug->definedat);
|
|
exit(1);
|
|
}
|
|
return d;
|
|
}
|
|
|
|
SUBROUTDEC* getfunction(SCOPE* s, SUBROUTCALL* call) {
|
|
CLASS* c = getclass(s, call->parentname);
|
|
if(c == NULL)
|
|
notdeclared(call->parentname, call->debug);
|
|
SUBROUTDEC* d = getsubroutdecfromlist(c->subroutdecs, call->name);
|
|
if(d == NULL)
|
|
return NULL;
|
|
if(d->subroutclass == method) {
|
|
eprintf("Calling a method as if it were a function; file '%s', line %i\n", call->debug->file, call->debug->definedat);
|
|
exit(1);
|
|
}
|
|
return d;
|
|
}
|
|
|
|
SUBROUTDEC* getsubroutdecwithparent(SCOPE* s, SUBROUTCALL* call, VAR** varret) {
|
|
VAR* parent = getvar(s, call->parentname);
|
|
if(parent != NULL) {
|
|
if(parent->primitive) {
|
|
eprintf("Primitive type does not have subroutines; file '%s', line %i\n", call->debug->file, call->debug->definedat);
|
|
exit(1);
|
|
}
|
|
*varret = parent;
|
|
return getmethod(s, parent, call);
|
|
}
|
|
else
|
|
return getfunction(s, call);
|
|
}
|
|
|
|
SUBROUTDEC* getsubroutdecwithoutparent(SCOPE* s, SUBROUTCALL* call) {
|
|
SUBROUTDEC* d = getsubroutdecfromlist(s->currclass->subroutdecs, call->name);
|
|
return d;
|
|
}
|
|
|
|
SUBROUTDEC* getsubroutdecfromcall(SCOPE* s, SUBROUTCALL* call, VAR** varret) {
|
|
SUBROUTDEC* d;
|
|
*varret = NULL;
|
|
if(call->parentname != NULL)
|
|
d = getsubroutdecwithparent(s, call, varret);
|
|
else
|
|
d = getsubroutdecwithoutparent(s, call);
|
|
if(d == NULL)
|
|
notdeclared(call->name, call->debug);
|
|
return d;
|
|
}
|
|
|
|
SUBROUTDEC* getsubroutdec(SCOPE* s, const char* name) {
|
|
SUBROUTDEC* curr = s->subroutines;
|
|
while(curr != NULL) {
|
|
if(!strcmp(curr->name, name))
|
|
return curr;
|
|
curr = curr->next;
|
|
}
|
|
if(s->previous != NULL)
|
|
return getsubroutdec(s->previous, name);
|
|
return NULL;
|
|
}
|
|
|
|
// Scope adding
|
|
VAR* mkvar(char* type, char* name, bool primitive, DEBUGINFO* debug, MEMSEGMENT seg, int i) {
|
|
VAR* v = (VAR*)malloc(sizeof(VAR));
|
|
v->name = name;
|
|
v->type = type;
|
|
v->debug = debug;
|
|
v->memsegment = memsegnames[seg];
|
|
v->primitive = primitive;
|
|
v->index = i;
|
|
return v;
|
|
}
|
|
|
|
void addvar(SCOPE* s, VAR** dest, VAR* v) {
|
|
ensurenoduplicate(s, v->name);
|
|
|
|
if(!v->primitive) {
|
|
CLASS* type = getclass(s, v->type);
|
|
if(type == NULL)
|
|
notdeclared(v->type, v->debug);
|
|
}
|
|
|
|
v->next = *dest;
|
|
*dest = v;
|
|
}
|
|
|
|
void addlocalvar(SCOPE* s, VARDEC* v, int* i) {
|
|
STRINGLIST* currname = v->names;
|
|
while(currname != NULL) {
|
|
addvar(s, &(s->localvars), mkvar(v->type, currname->content, v->primitive, v->debug, local, *i));
|
|
currname = currname->next;
|
|
(*i)++;
|
|
}
|
|
}
|
|
|
|
void addstaticvar(SCOPE* s, CLASSVARDEC* v) {
|
|
STRINGLIST* currname = v->base->names;
|
|
pthread_mutex_lock(&(s->compiler->staticmutex));
|
|
static int i = 0;
|
|
while(currname != NULL) {
|
|
addvar(s, &(s->staticvars), mkvar(v->base->type, currname->content, v->base->primitive, v->base->debug, staticseg, i));
|
|
currname = currname->next;
|
|
i++;
|
|
}
|
|
pthread_mutex_unlock(&(s->compiler->staticmutex));
|
|
}
|
|
|
|
void addfield(SCOPE* s, CLASSVARDEC* v, int* i) {
|
|
STRINGLIST* currname = v->base->names;
|
|
while(currname != NULL) {
|
|
addvar(s, &(s->fields), mkvar(v->base->type, currname->content, v->base->primitive, v->base->debug, fieldseg, *i));
|
|
currname = currname->next;
|
|
(*i)++;
|
|
}
|
|
}
|
|
|
|
void addclassvardec(SCOPE* s, CLASSVARDEC* v, int* i) {
|
|
if(v->type == stat)
|
|
addstaticvar(s, v);
|
|
else {
|
|
addfield(s, v, i);
|
|
}
|
|
}
|
|
|
|
void addparameter(SCOPE* s, PARAMETER* p, int* i) {
|
|
addvar(s, &(s->parameters), mkvar(p->type, p->name, p->primitive, p->debug, arg, *i));
|
|
(*i)++;
|
|
}
|
|
|
|
// Group adding
|
|
void addclassvardecs(SCOPE* s, CLASSVARDEC* classvardecs) {
|
|
int i = 0;
|
|
while(classvardecs != NULL) {
|
|
addclassvardec(s, classvardecs, &i);
|
|
classvardecs = classvardecs->next;
|
|
}
|
|
}
|
|
|
|
void addlocalvars(SCOPE* s, VARDEC* localvars) {
|
|
int i = 0;
|
|
while(localvars != NULL) {
|
|
addlocalvar(s, localvars, &i);
|
|
localvars = localvars->next;
|
|
}
|
|
}
|
|
|
|
void addparameters(SCOPE* s, bool isformethod, PARAMETER* params) {
|
|
int i = isformethod ? 1 : 0;
|
|
while(params != NULL) {
|
|
addparameter(s, params, &i);
|
|
params = params->next;
|
|
}
|
|
}
|
|
|
|
void freevars(VAR* v) {
|
|
if(v != NULL) {
|
|
VAR* next = v->next;
|
|
free(v);
|
|
freevars(next);
|
|
}
|
|
}
|
|
|
|
void freescope(SCOPE* s) {
|
|
freevars(s->fields);
|
|
freevars(s->staticvars);
|
|
freevars(s->localvars);
|
|
freevars(s->parameters);
|
|
free(s);
|
|
};
|