Organize compiler
This commit is contained in:
Augusto Gunsch
parent
26de7337da
commit
b9f016f82a
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@ -4,7 +4,7 @@
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#include "compiler.h"
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/* compiler-expressions
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* Subroutines for dealing and compiling expressions and singular terms. */
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* Functions for dealing and compiling expressions and singular terms. */
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// Dealing with singular terms
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LINEBLOCK* compilesubroutcall(SCOPE* s, SUBROUTCALL* call);
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@ -0,0 +1,166 @@
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#include <stdlib.h>
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#include <string.h>
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#include "compiler-expressions.h"
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#include "compiler-statements.h"
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#include "compiler-util.h"
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/* BEGIN FORWARD DECLARATIONS */
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// Miscelaneous
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LINE* popthat();
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LINE* pushtemp();
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char* mkcondlabel(char* name, int count);
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// Handling individual statements
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LINEBLOCK* compileret(SCOPE* s, TERM* e);
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LINEBLOCK* compileif(COMPILER* c, SCOPE* s, IFSTATEMENT* st);
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LINEBLOCK* compilewhile(COMPILER* c, SCOPE* s, CONDSTATEMENT* w);
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LINEBLOCK* compilelet(SCOPE* s, LETSTATEMENT* l);
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LINEBLOCK* compilestatement(COMPILER* c, SCOPE* s, STATEMENT* st);
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/* END FORWARD DECLARATIONS */
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// Miscelaneous
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LINE* popthat() {
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char* popthat[] = { "pop", "that", "0" };
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return mkln(popthat);
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}
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LINE* pushtemp() {
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char* pushtemp[] = { "push", "temp", "0" };
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return mkln(pushtemp);
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}
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char* mkcondlabel(char* name, int count) {
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int sz = (strlen(name) + countplaces(count) + 1) * sizeof(char);
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char* result = (char*)malloc(sz);
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sprintf(result, "%s%i", name, count);
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return result;
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}
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// Handling individual statements
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LINEBLOCK* compileret(SCOPE* s, TERM* e) {
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LINE* ret = onetoken("return");
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LINEBLOCK* blk = mklnblk(ret);
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// void subroutdecs return 0
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if(e == NULL) {
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char* tokens[] = { "push", "constant", "0" };
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appendlnbefore(blk, mkln(tokens));
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} else
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blk = mergelnblks(compileexpression(s, e), blk);
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return blk;
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}
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LINEBLOCK* compileif(COMPILER* c, SCOPE* s, IFSTATEMENT* st) {
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LINEBLOCK* blk = compileexpression(s, st->base->expression);
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pthread_mutex_lock(&(c->ifmutex));
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static int ifcount = 0;
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int mycount = ifcount;
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ifcount++;
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pthread_mutex_unlock(&(c->ifmutex));
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char* truelabel = mkcondlabel("IF_TRUE", mycount);
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char* ifgoto[] = { "if-goto", truelabel };
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appendln(blk, mkln(ifgoto));
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char* falselabel = mkcondlabel("IF_FALSE", mycount);
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char* gotofalse[] = { "goto", falselabel };
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appendln(blk, mkln(gotofalse));
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char* truelabelln[] = { "label", truelabel };
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appendln(blk, mkln(truelabelln));
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blk = mergelnblks(blk, compilestatements(c, s, st->base->statements));
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char* endlabel;
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bool haselse = st->elsestatements != NULL;
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if(haselse) {
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endlabel = mkcondlabel("IF_END", mycount);
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char* endgoto[] = { "goto", endlabel };
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appendln(blk, mkln(endgoto));
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}
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char* falselabelln[] = { "label", falselabel};
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appendln(blk, mkln(falselabelln));
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if(haselse) {
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blk = mergelnblks(blk, compilestatements(c, s, st->elsestatements));
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char* endlabelln[] = { "label", endlabel };
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appendln(blk, mkln(endlabelln));
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}
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return blk;
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}
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LINEBLOCK* compilewhile(COMPILER* c, SCOPE* s, CONDSTATEMENT* w) {
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LINEBLOCK* blk = compileexpression(s, w->expression);
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pthread_mutex_lock(&(c->whilemutex));
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static int whilecount = 0;
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int mycount = whilecount;
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whilecount++;
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pthread_mutex_unlock(&(c->whilemutex));
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char* explabel = mkcondlabel("WHILE_EXP", mycount);
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char* explabelln[] = { "label", explabel };
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appendlnbefore(blk, mkln(explabelln));
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appendln(blk, onetoken("not"));
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char* endlabel = mkcondlabel("WHILE_END", mycount);
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char* ifgoto[] = { "if-goto", endlabel };
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appendln(blk, mkln(ifgoto));
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blk = mergelnblks(blk, compilestatements(c, s, w->statements));
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char* gotoln[] = { "goto", explabel };
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appendln(blk, mkln(gotoln));
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char* endlabelln[] = { "label", endlabel };
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appendln(blk, mkln(endlabelln));
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return blk;
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}
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LINEBLOCK* compilelet(SCOPE* s, LETSTATEMENT* l) {
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LINEBLOCK* blk = compileexpression(s, l->expression);
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if(l->arrayind != NULL) {
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appendlnbefore(blk, onetoken("add"));
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appendlnbefore(blk, pushvar(s, l->varname));
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blk = mergelnblks(compileexpression(s, l->arrayind), blk);
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appendln(blk, poptemp());
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appendln(blk, popthatadd());
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appendln(blk, pushtemp());
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appendln(blk, popthat());
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}
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else
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appendln(blk, popvar(s, l->varname));
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return blk;
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}
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LINEBLOCK* compilestatement(COMPILER* c, SCOPE* s, STATEMENT* st) {
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s->currdebug = st->debug;
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if(st->type == dostatement) return compilesubroutcall(s, st->dostatement);
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if(st->type == returnstatement) return compileret(s, st->retstatement);
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if(st->type == ifstatement) return compileif(c, s, st->ifstatement);
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if(st->type == whilestatement) return compilewhile(c, s, st->whilestatement);
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if(st->type == letstatement) return compilelet(s, st->letstatement);
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eprintf("UNSUPPORTED type %i\n", st->type);
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exit(1);
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}
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LINEBLOCK* compilestatements(COMPILER* c, SCOPE* s, STATEMENT* sts) {
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LINEBLOCK* head = NULL;
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while(sts != NULL) {
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head = mergelnblks(head, compilestatement(c, s, sts));
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sts = sts->next;
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}
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return head;
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}
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@ -0,0 +1,9 @@
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#ifndef COMPILER_STATEMENTS_H
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#define COMPILER_STATEMENTS_H
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#include "compiler.h"
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/* compiler-statements
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* Single function for compiling statements */
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LINEBLOCK* compilestatements(COMPILER* c, SCOPE* s, STATEMENT* sts);
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#endif
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@ -0,0 +1,130 @@
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#include <stdlib.h>
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#include "compiler-statements.h"
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#include "compiler-structure.h"
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#include "compiler-util.h"
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/* BEGIN FORWARD DECLARATIONS */
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// Miscelaneous
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int countlocalvars(VARDEC* decs);
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int countstrs(STRINGLIST* ls);
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int getobjsize(CLASS* c);
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LINE* mksubdeclabel(CLASS* c, SUBROUTDEC* sd);
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// Compiling methods
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LINEBLOCK* compilefunbody(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTBODY* b);
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LINEBLOCK* compilefundec(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* f);
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LINEBLOCK* compileconstructor(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* con);
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LINEBLOCK* compilemethod(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* m);
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/* END FORWARD DECLARATIONS */
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// Miscelaneous
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int countlocalvars(VARDEC* decs) {
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int i = 0;
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while(decs != NULL) {
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STRINGLIST* curr = decs->names;
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while(curr != NULL) {
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i++;
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curr = curr->next;
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}
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decs = decs->next;
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}
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return i;
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}
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int countstrs(STRINGLIST* ls) {
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int count = 0;
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while(ls != NULL) {
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count++;
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ls = ls->next;
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}
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return count;
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}
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int getobjsize(CLASS* c) {
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CLASSVARDEC* curr = c->vardecs;
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int count = 0;
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while(curr != NULL) {
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if(curr->type == field)
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count += countstrs(curr->base->names);
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curr = curr->next;
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}
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return count;
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}
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LINE* mksubdeclabel(CLASS* c, SUBROUTDEC* sd) {
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char* labelstrs[] = { "function", dotlabel(c->name, sd->name), itoa(countlocalvars(sd->body->vardecs)) };
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LINE* label = mkln(labelstrs);
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free(labelstrs[1]);
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free(labelstrs[2]);
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label->next = NULL;
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return label;
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}
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// Compiling methods
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LINEBLOCK* compilefunbody(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTBODY* b) {
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SCOPE* myscope = mkscope(s);
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myscope->currclass = cl;
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if(b->vardecs != NULL)
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addlocalvars(s, b->vardecs);
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LINEBLOCK* head = compilestatements(c, myscope, b->statements);
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return head;
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}
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LINEBLOCK* compilefundec(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* f) {
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LINE* label = mksubdeclabel(cl, f);
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if(f->body->statements != NULL) {
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LINEBLOCK* body = compilefunbody(c, s, cl, f->body);
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appendlnbefore(body, label);
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return body;
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}
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else
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return mklnblk(label);
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}
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LINEBLOCK* compileconstructor(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* con) {
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LINE* label = mksubdeclabel(cl, con);
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LINEBLOCK* blk = mklnblk(label);
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char* size[] = { "push", "constant", itoa(getobjsize(cl)) };
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char* memalloc[] = { "call", "Memory.alloc", "1" };
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char* poppointer[] = { "pop", "pointer", "0" };
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appendln(blk, mkln(size));
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appendln(blk, mkln(memalloc));
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appendln(blk, mkln(poppointer));
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free(size[2]);
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if(con->body != NULL)
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return mergelnblks(blk, compilefunbody(c, s, cl, con->body));
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else
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return blk;
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}
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LINEBLOCK* compilemethod(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* m) {
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LINE* label = mksubdeclabel(cl, m);
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LINEBLOCK* blk = mklnblk(label);
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char* pusharg0[] = { "push", "argument", "0" };
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char* poppointer[] = { "pop", "pointer", "0" };
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appendln(blk, mkln(pusharg0));
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appendln(blk, mkln(poppointer));
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if(m->body != NULL)
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return mergelnblks(blk, compilefunbody(c, s, cl, m->body));
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else
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return blk;
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}
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LINEBLOCK* compilesubroutdec(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* sd) {
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SCOPE* myscope = mkscope(s);
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if(sd->parameters != NULL)
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addparameters(myscope, sd->subroutclass == method, sd->parameters);
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if(sd->subroutclass == function)
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return compilefundec(c, myscope, cl, sd);
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if(sd->subroutclass == constructor)
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return compileconstructor(c, myscope, cl, sd);
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return compilemethod(c, myscope, cl, sd);
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}
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@ -0,0 +1,9 @@
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#ifndef COMPILER_STRUCTURE_H
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#define COMPILER_STRUCTURE_H
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#include "compiler.h"
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/* compiler-structure
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* Module for dealing with and compiling general program structure. */
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LINEBLOCK* compilesubroutdec(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* sd);
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#endif
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@ -4,6 +4,9 @@
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#include "compiler-scopes.h"
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#include "compiler.h"
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/* compiler-util
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* Random utilities for the compiler. */
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#define mkln(id) mksimpleln(id, strcount(id))
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LINE* onetoken(char* str);
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@ -1,280 +1,9 @@
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#include <stdlib.h>
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#include <string.h>
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#include "compiler-structure.h"
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#include "compiler.h"
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#include "compiler-util.h"
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#include "compiler-expressions.h"
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LINEBLOCK* compilestatements(COMPILER* c, SCOPE* s, STATEMENT* sts);
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LINEBLOCK* compileexpression(SCOPE* s, TERM* e);
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int countparameters(PARAMETER* params) {
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int i = 0;
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while(params != NULL) {
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i++;
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params = params->next;
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}
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return i;
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}
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int countlocalvars(VARDEC* decs) {
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int i = 0;
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while(decs != NULL) {
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STRINGLIST* curr = decs->names;
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while(curr != NULL) {
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i++;
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curr = curr->next;
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}
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decs = decs->next;
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}
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return i;
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}
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char* mkcondlabel(char* name, int count) {
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int sz = (strlen(name) + countplaces(count) + 1) * sizeof(char);
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char* result = (char*)malloc(sz);
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sprintf(result, "%s%i", name, count);
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return result;
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}
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LINE* pushthatadd() {
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char* pushthatadd[] = { "push", "pointer", "1" };
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return mkln(pushthatadd);
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}
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LINE* popthat() {
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char* popthat[] = { "pop", "that", "0" };
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return mkln(popthat);
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}
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LINE* pushtemp() {
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char* pushtemp[] = { "push", "temp", "0" };
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return mkln(pushtemp);
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}
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LINEBLOCK* compileret(SCOPE* s, TERM* e) {
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LINE* ret = onetoken("return");
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LINEBLOCK* blk = mklnblk(ret);
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// void subroutdecs return 0
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if(e == NULL) {
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char* tokens[] = { "push", "constant", "0" };
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appendlnbefore(blk, mkln(tokens));
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} else
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blk = mergelnblks(compileexpression(s, e), blk);
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return blk;
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}
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LINEBLOCK* compileif(COMPILER* c, SCOPE* s, IFSTATEMENT* st) {
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LINEBLOCK* blk = compileexpression(s, st->base->expression);
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pthread_mutex_lock(&(c->ifmutex));
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static int ifcount = 0;
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int mycount = ifcount;
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ifcount++;
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pthread_mutex_unlock(&(c->ifmutex));
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char* truelabel = mkcondlabel("IF_TRUE", mycount);
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char* ifgoto[] = { "if-goto", truelabel };
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appendln(blk, mkln(ifgoto));
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char* falselabel = mkcondlabel("IF_FALSE", mycount);
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char* gotofalse[] = { "goto", falselabel };
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appendln(blk, mkln(gotofalse));
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char* truelabelln[] = { "label", truelabel };
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appendln(blk, mkln(truelabelln));
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blk = mergelnblks(blk, compilestatements(c, s, st->base->statements));
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char* endlabel;
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bool haselse = st->elsestatements != NULL;
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if(haselse) {
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endlabel = mkcondlabel("IF_END", mycount);
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char* endgoto[] = { "goto", endlabel };
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appendln(blk, mkln(endgoto));
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}
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char* falselabelln[] = { "label", falselabel};
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appendln(blk, mkln(falselabelln));
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if(haselse) {
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blk = mergelnblks(blk, compilestatements(c, s, st->elsestatements));
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char* endlabelln[] = { "label", endlabel };
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appendln(blk, mkln(endlabelln));
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}
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return blk;
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}
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LINEBLOCK* compilewhile(COMPILER* c, SCOPE* s, CONDSTATEMENT* w) {
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LINEBLOCK* blk = compileexpression(s, w->expression);
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pthread_mutex_lock(&(c->whilemutex));
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static int whilecount = 0;
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int mycount = whilecount;
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whilecount++;
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pthread_mutex_unlock(&(c->whilemutex));
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char* explabel = mkcondlabel("WHILE_EXP", mycount);
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char* explabelln[] = { "label", explabel };
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appendlnbefore(blk, mkln(explabelln));
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appendln(blk, onetoken("not"));
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char* endlabel = mkcondlabel("WHILE_END", mycount);
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char* ifgoto[] = { "if-goto", endlabel };
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appendln(blk, mkln(ifgoto));
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blk = mergelnblks(blk, compilestatements(c, s, w->statements));
|
||||
|
||||
char* gotoln[] = { "goto", explabel };
|
||||
appendln(blk, mkln(gotoln));
|
||||
|
||||
char* endlabelln[] = { "label", endlabel };
|
||||
appendln(blk, mkln(endlabelln));
|
||||
|
||||
return blk;
|
||||
}
|
||||
|
||||
LINEBLOCK* compilelet(SCOPE* s, LETSTATEMENT* l) {
|
||||
LINEBLOCK* blk = compileexpression(s, l->expression);
|
||||
|
||||
if(l->arrayind != NULL) {
|
||||
appendlnbefore(blk, onetoken("add"));
|
||||
appendlnbefore(blk, pushvar(s, l->varname));
|
||||
blk = mergelnblks(compileexpression(s, l->arrayind), blk);
|
||||
|
||||
appendln(blk, poptemp());
|
||||
appendln(blk, popthatadd());
|
||||
appendln(blk, pushtemp());
|
||||
appendln(blk, popthat());
|
||||
}
|
||||
else
|
||||
appendln(blk, popvar(s, l->varname));
|
||||
return blk;
|
||||
}
|
||||
|
||||
LINEBLOCK* compilestatement(COMPILER* c, SCOPE* s, STATEMENT* st) {
|
||||
s->currdebug = st->debug;
|
||||
if(st->type == dostatement) return compilesubroutcall(s, st->dostatement);
|
||||
if(st->type == returnstatement) return compileret(s, st->retstatement);
|
||||
if(st->type == ifstatement) return compileif(c, s, st->ifstatement);
|
||||
if(st->type == whilestatement) return compilewhile(c, s, st->whilestatement);
|
||||
if(st->type == letstatement) return compilelet(s, st->letstatement);
|
||||
eprintf("UNSUPPORTED type %i\n", st->type);
|
||||
exit(1);
|
||||
}
|
||||
|
||||
LINEBLOCK* compilestatements(COMPILER* c, SCOPE* s, STATEMENT* sts) {
|
||||
LINEBLOCK* head = NULL;
|
||||
while(sts != NULL) {
|
||||
head = mergelnblks(head, compilestatement(c, s, sts));
|
||||
sts = sts->next;
|
||||
}
|
||||
return head;
|
||||
}
|
||||
|
||||
LINEBLOCK* compilefunbody(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTBODY* b) {
|
||||
SCOPE* myscope = mkscope(s);
|
||||
myscope->currclass = cl;
|
||||
if(b->vardecs != NULL)
|
||||
addlocalvars(s, b->vardecs);
|
||||
LINEBLOCK* head = compilestatements(c, myscope, b->statements);
|
||||
return head;
|
||||
}
|
||||
|
||||
LINE* mksubdeclabel(CLASS* c, SUBROUTDEC* sd) {
|
||||
char* labelstrs[] = { "function", dotlabel(c->name, sd->name), itoa(countlocalvars(sd->body->vardecs)) };
|
||||
LINE* label = mkln(labelstrs);
|
||||
free(labelstrs[1]);
|
||||
free(labelstrs[2]);
|
||||
label->next = NULL;
|
||||
return label;
|
||||
}
|
||||
|
||||
LINEBLOCK* compilefundec(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* f) {
|
||||
LINE* label = mksubdeclabel(cl, f);
|
||||
|
||||
if(f->body->statements != NULL) {
|
||||
LINEBLOCK* body = compilefunbody(c, s, cl, f->body);
|
||||
appendlnbefore(body, label);
|
||||
return body;
|
||||
}
|
||||
else
|
||||
return mklnblk(label);
|
||||
}
|
||||
|
||||
int countstrs(STRINGLIST* ls) {
|
||||
int count = 0;
|
||||
while(ls != NULL) {
|
||||
count++;
|
||||
ls = ls->next;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
int getobjsize(CLASS* c) {
|
||||
CLASSVARDEC* curr = c->vardecs;
|
||||
int count = 0;
|
||||
while(curr != NULL) {
|
||||
if(curr->type == field)
|
||||
count += countstrs(curr->base->names);
|
||||
curr = curr->next;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
LINEBLOCK* compileconstructor(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* con) {
|
||||
LINE* label = mksubdeclabel(cl, con);
|
||||
LINEBLOCK* blk = mklnblk(label);
|
||||
|
||||
char* size[] = { "push", "constant", itoa(getobjsize(cl)) };
|
||||
char* memalloc[] = { "call", "Memory.alloc", "1" };
|
||||
char* poppointer[] = { "pop", "pointer", "0" };
|
||||
appendln(blk, mkln(size));
|
||||
appendln(blk, mkln(memalloc));
|
||||
appendln(blk, mkln(poppointer));
|
||||
free(size[2]);
|
||||
|
||||
if(con->body != NULL)
|
||||
return mergelnblks(blk, compilefunbody(c, s, cl, con->body));
|
||||
else
|
||||
return blk;
|
||||
}
|
||||
|
||||
LINEBLOCK* compilemethod(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* m) {
|
||||
LINE* label = mksubdeclabel(cl, m);
|
||||
LINEBLOCK* blk = mklnblk(label);
|
||||
|
||||
char* pusharg0[] = { "push", "argument", "0" };
|
||||
char* poppointer[] = { "pop", "pointer", "0" };
|
||||
appendln(blk, mkln(pusharg0));
|
||||
appendln(blk, mkln(poppointer));
|
||||
|
||||
if(m->body != NULL)
|
||||
return mergelnblks(blk, compilefunbody(c, s, cl, m->body));
|
||||
else
|
||||
return blk;
|
||||
}
|
||||
|
||||
LINEBLOCK* compilesubroutdec(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* sd) {
|
||||
// 'this' and arguments are pushed by caller
|
||||
// Must have a 'return' at the end
|
||||
// Label names must have class name too (see mapping)
|
||||
|
||||
// types: method, function, constructor
|
||||
// must switch all of these
|
||||
SCOPE* myscope = mkscope(s);
|
||||
if(sd->parameters != NULL)
|
||||
addparameters(myscope, sd->subroutclass == method, sd->parameters);
|
||||
if(sd->subroutclass == function)
|
||||
return compilefundec(c, myscope, cl, sd);
|
||||
if(sd->subroutclass == constructor)
|
||||
return compileconstructor(c, myscope, cl, sd);
|
||||
return compilemethod(c, myscope, cl, sd);
|
||||
}
|
||||
|
||||
/* This should be part of compiler-structure, but since it is used by other modules,
|
||||
* it will stay here for convenience */
|
||||
LINEBLOCK* compileclass(COMPILER* c, CLASS* class) {
|
||||
SCOPE* topscope = mkscope(c->globalscope);
|
||||
if(class->vardecs != NULL)
|
||||
|
|
|
|||
|
|
@ -5,8 +5,11 @@
|
|||
#include "vm-lines.h"
|
||||
#include "compiler-scopes.h"
|
||||
|
||||
struct scope;
|
||||
/* compiler
|
||||
* This is the file that should be included in other modules
|
||||
* that want to compile a class/program. */
|
||||
|
||||
struct scope;
|
||||
typedef struct compiler {
|
||||
pthread_mutex_t ifmutex;
|
||||
pthread_mutex_t whilemutex;
|
||||
|
|
|
|||
Loading…
Reference in New Issue