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Add compiler-expressions and compiler-util

This commit is contained in:
Augusto Gunsch 2020-12-31 19:12:01 -03:00
parent b7fe5b8f45
commit 26de7337da
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GPG Key ID: F7EEFE29825C72DC
9 changed files with 340 additions and 277 deletions
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2
Makefile
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@ -1,7 +1,7 @@
FILES = *.c */*.c
LIBRARIES = -lpthread
INCLUDES = -I. -I./parser/ -I./compiler/ -I./vm/ -I./tokenizer/ -I./misc/
CFLAGS = -std=c99 -g -Wall
CFLAGS = -std=c99 -g
OUTFILE = jack-compiler
main: ${FILES}

225
compiler/compiler-expressions.c Normal file
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@ -0,0 +1,225 @@
#include <stdlib.h>
#include <string.h>
#include "compiler-expressions.h"
#include "compiler-util.h"
/* BEGIN FORWARD DECLARATIONS */
// Miscelaneous
LINE* pushconstant(int n);
LINE* mathopln(char op);
LINE* pushthat();
int countexpressions(EXPRESSIONLIST* explist);
char* toascii(char c);
// Dealing with singular terms
LINEBLOCK* compilestrconst(char* str);
LINEBLOCK* compilekeywordconst(SCOPE* s, TERM* t);
LINEBLOCK* compilearrayitem(SCOPE* s, TERM* t);
LINEBLOCK* compilecallln(SCOPE* s, SUBROUTDEC* d, SUBROUTCALL* call);
LINEBLOCK* pushunaryopterm(SCOPE* s, TERM* t);
LINEBLOCK* compileterm(SCOPE* s, TERM* t);
/* END FORWARD DECLARATIONS */
// Miscelaneous
LINE* mathopln(char op) {
if(op == '+')
return onetoken("add");
if(op == '-')
return onetoken("sub");
if(op == '=')
return onetoken("eq");
if(op == '>')
return onetoken("gt");
if(op == '<')
return onetoken("lt");
if(op == '|')
return onetoken("or");
if(op == '&')
return onetoken("and");
if(op == '/') {
char* tokens[] = { "call", "Math.divide", "2" };
return mkln(tokens);
}
char* tokens[] = { "call", "Math.multiply", "2" };
return mkln(tokens);
}
LINE* pushconstant(int n) {
char* tokens[] = { "push", "constant", itoa(n) };
return mkln(tokens);
}
LINE* pushthat() {
char* pushthat[] = { "push", "that", "0" };
return mkln(pushthat);
}
int countexpressions(EXPRESSIONLIST* explist) {
int i = 0;
while(explist != NULL) {
i++;
explist = explist->next;
}
return i;
}
char* toascii(char c) {
char* result = (char*)malloc(sizeof(char) * (countplaces(c) + 1));
sprintf(result, "%i", c);
return result;
}
// Dealing with singular terms
LINEBLOCK* compilestrconst(char* str) {
if(str[0] == '\0')
return NULL;
char* pushchar[] = { "push", "constant", toascii(str[0]) };
LINEBLOCK* blk = mklnblk(mksimpleln(pushchar, strcount(pushchar)));
free(pushchar[2]);
char* appendchar[] = { "call", "String.appendChar", "2" };
appendln(blk, mkln(appendchar));
int i = 1;
char c;
while(c = str[i], c != '\0') {
pushchar[2] = toascii(c);
appendln(blk, mksimpleln(pushchar, strcount(pushchar)));
free(pushchar[2]);
appendln(blk, mksimpleln(appendchar, strcount(appendchar)));
i++;
}
char* strsize[] = { "push", "constant", itoa(i) };
char* mknew[] = { "call", "String.new", "1" };
appendlnbefore(blk, mkln(mknew));
appendlnbefore(blk, mkln(strsize));
free(strsize[2]);
return blk;
}
LINE* pushthisadd() {
char* pushthisadd[] = { "push", "pointer", "0" };
return mkln(pushthisadd);
}
LINE* pushfalse() {
return pushconstant(0);
}
LINEBLOCK* pushtrue() {
LINEBLOCK* blk = mklnblk(pushfalse());
appendln(blk, onetoken("not"));
return blk;
}
LINEBLOCK* compilekeywordconst(SCOPE* s, TERM* t) {
if(!strcmp(t->string, "this")) return mklnblk(pushthisadd());
if(!strcmp(t->string, "false")) return mklnblk(pushfalse());
if(!strcmp(t->string, "true")) return pushtrue();
return mklnblk(pushconstant(0));
}
LINEBLOCK* compilearrayitem(SCOPE* s, TERM* t) {
LINEBLOCK* blk = compileexpression(s, t->array->exp);
appendln(blk, pushvar(s, t->array->name));
appendln(blk, onetoken("add"));
appendln(blk, popthatadd());
appendln(blk, pushthat());
return blk;
}
LINEBLOCK* compilecallln(SCOPE* s, SUBROUTDEC* d, SUBROUTCALL* call) {
LINE* ln = mkline(3);
addtoken(ln, ezheapstr("call"));
addtoken(ln, dotlabel(d->class->name, call->name));
int count = countexpressions(call->parameters);
if(d->subroutclass == method)
count++;
addtoken(ln, itoa(count));
return mklnblk(ln);
}
LINEBLOCK* compilesubroutcall(SCOPE* s, SUBROUTCALL* call) {
VAR* v;
SUBROUTDEC* d = getsubroutdecfromcall(s, call, &v);
LINEBLOCK* blk = compilecallln(s, d, call);
if(call->parameters != NULL)
blk = mergelnblks(compileexplist(s, call->parameters), blk);
if(d->subroutclass == method) {
if(call->parentname == NULL)
appendlnbefore(blk, pushthisadd());
else
appendlnbefore(blk, pushvarraw(s, v));
}
// void functions always return 0
// therefore must be thrown away
if(!strcmp(d->type, "void")) {
appendln(blk, poptemp());
}
return blk;
}
LINEBLOCK* pushunaryopterm(SCOPE* s, TERM* t) {
LINEBLOCK* blk = compileexpression(s, t->expression);
LINE* neg;
if(t->unaryop == '-')
neg = onetoken("neg");
else
neg = onetoken("not");
appendln(blk, neg);
return blk;
}
LINEBLOCK* compileterm(SCOPE* s, TERM* t) {
if(t->type == varname) return mklnblk(pushvar(s, t->string));
if(t->type == intconstant) return mklnblk(pushconstant(t->integer));
if(t->type == stringconstant) return compilestrconst(t->string);
if(t->type == keywordconstant) return compilekeywordconst(s, t);
if(t->type == arrayitem) return compilearrayitem(s, t);
if(t->type == subroutcall) return compilesubroutcall(s, t->call);
if(t->type == innerexpression) return compileexpression(s, t->expression);
return pushunaryopterm(s, t);
}
// Dealing with whole expressions
LINEBLOCK* compileexpression(SCOPE* s, TERM* e) {
LINEBLOCK* blk = NULL;
if(e != NULL) {
while(true) {
blk = mergelnblks(blk, compileterm(s, e));
if(e->next != NULL) {
appendln(blk, mathopln(e->op));
e = e->next;
}
else break;
}
}
return blk;
}
LINEBLOCK* compileexplist(SCOPE* s, EXPRESSIONLIST* explist) {
LINEBLOCK* head = NULL;
while(explist != NULL) {
head = mergelnblks(head, compileexpression(s, explist->expression));
explist = explist->next;
}
return head;
}

15
compiler/compiler-expressions.h Normal file
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@ -0,0 +1,15 @@
#ifndef COMPILER_EXPRESSIONS_H
#define COMPILER_EXPRESSIONS_H
#include "vm-lines.h"
#include "compiler.h"
/* compiler-expressions
* Subroutines for dealing and compiling expressions and singular terms. */
// Dealing with singular terms
LINEBLOCK* compilesubroutcall(SCOPE* s, SUBROUTCALL* call);
// Dealing with whole expressions
LINEBLOCK* compileexpression(SCOPE* s, TERM* e);
LINEBLOCK* compileexplist(SCOPE* s, EXPRESSIONLIST* explist);
#endif

48
compiler/compiler-util.c Normal file
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@ -0,0 +1,48 @@
#include "compiler-util.h"
LINE* opvarraw(SCOPE* s, char* op, VAR* v) {
char* tokens[] = { op, v->memsegment, itoa(v->index) };
return mksimpleln(tokens, strcount(tokens));
}
LINE* opvar(SCOPE* s, char* op, const char* name) {
VAR* v = getvar(s, name);
return opvarraw(s, op, v);
}
LINE* pushvarraw(SCOPE*s, VAR* v) {
return opvarraw(s, "push", v);
}
LINE* pushvar(SCOPE* s, const char* name) {
return opvar(s, "push", name);
}
LINE* popvar(SCOPE* s, const char* name) {
return opvar(s, "pop", name);
}
LINE* poptemp() {
char* poptemp[] = { "pop", "temp", "0" };
return mksimpleln(poptemp, strcount(poptemp));
}
LINE* popthatadd() {
char* popthatadd[] = { "pop", "pointer", "1" };
return mksimpleln(popthatadd, strcount(popthatadd));
}
LINE* onetoken(char* str) {
LINE* ln = mkline(1);
addtoken(ln, ezheapstr(str));
ln->next = NULL;
return ln;
}
LINE* mksimpleln(char** tokens, int count) {
LINE* ln = mkline(count);
for(int i = 0; i < count; i++)
addtoken(ln, ezheapstr(tokens[i]));
ln->next = NULL;
return ln;
}

18
compiler/compiler-util.h Normal file
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@ -0,0 +1,18 @@
#ifndef COMPILER_UTIL_H
#define COMPILER_UTIL_H
#include "vm-lines.h"
#include "compiler-scopes.h"
#include "compiler.h"
#define mkln(id) mksimpleln(id, strcount(id))
LINE* onetoken(char* str);
LINE* mksimpleln(char** tokens, int count);
LINE* pushvarraw(SCOPE*s, VAR* v);
LINE* pushvar(SCOPE* s, const char* name);
LINE* popvar(SCOPE* s, const char* name);
LINE* poptemp();
LINE* popthatadd();
#endif

297
compiler/compiler.c
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@ -1,9 +1,10 @@
#include <stdlib.h>
#include <string.h>
#include "compiler.h"
#include "compiler-util.h"
#include "compiler-expressions.h"
LINEBLOCK* compilestatements(COMPILER* c, SCOPE* s, STATEMENT* sts);
LINEBLOCK* compilesubroutcall(SCOPE* s, SUBROUTCALL* call);
LINEBLOCK* compileexpression(SCOPE* s, TERM* e);
int countparameters(PARAMETER* params) {
@ -15,15 +16,6 @@ int countparameters(PARAMETER* params) {
return i;
}
int countexpressions(EXPRESSIONLIST* explist) {
int i = 0;
while(explist != NULL) {
i++;
explist = explist->next;
}
return i;
}
int countlocalvars(VARDEC* decs) {
int i = 0;
while(decs != NULL) {
@ -37,13 +29,6 @@ int countlocalvars(VARDEC* decs) {
return i;
}
char* dotlabel(char* n1, char* n2) {
int sz = (strlen(n1) + strlen(n2) + 2) * sizeof(char);
char* result = (char*)malloc(sz);
sprintf(result, "%s.%s", n1, n2);
return result;
}
char* mkcondlabel(char* name, int count) {
int sz = (strlen(name) + countplaces(count) + 1) * sizeof(char);
char* result = (char*)malloc(sz);
@ -51,257 +36,19 @@ char* mkcondlabel(char* name, int count) {
return result;
}
LINE* onetoken(char* str) {
LINE* ln = mkline(1);
addtoken(ln, ezheapstr(str));
ln->next = NULL;
return ln;
}
LINE* mksimpleln(char** tokens, int count) {
LINE* ln = mkline(count);
for(int i = 0; i < count; i++)
addtoken(ln, ezheapstr(tokens[i]));
ln->next = NULL;
return ln;
}
LINE* mathopln(char op) {
if(op == '+')
return onetoken("add");
if(op == '-')
return onetoken("sub");
if(op == '=')
return onetoken("eq");
if(op == '>')
return onetoken("gt");
if(op == '<')
return onetoken("lt");
if(op == '|')
return onetoken("or");
if(op == '&')
return onetoken("and");
if(op == '/') {
char* tokens[] = { "call", "Math.divide", "2" };
return mksimpleln(tokens, strcount(tokens));
}
char* tokens[] = { "call", "Math.multiply", "2" };
return mksimpleln(tokens, strcount(tokens));
}
LINE* pushconstant(int n) {
char* tokens[] = { "push", "constant", itoa(n) };
return mksimpleln(tokens, strcount(tokens));
}
LINEBLOCK* pushunaryopterm(SCOPE* s, TERM* t) {
LINEBLOCK* blk = compileexpression(s, t->expression);
LINE* neg;
if(t->unaryop == '-')
neg = onetoken("neg");
else
neg = onetoken("not");
appendln(blk, neg);
return blk;
}
LINE* opvarraw(SCOPE* s, char* op, VAR* v) {
char* tokens[] = { op, v->memsegment, itoa(v->index) };
return mksimpleln(tokens, strcount(tokens));
}
LINE* opvar(SCOPE* s, char* op, const char* name) {
VAR* v = getvar(s, name);
return opvarraw(s, op, v);
}
LINE* pushvarraw(SCOPE*s, VAR* v) {
return opvarraw(s, "push", v);
}
LINE* pushvar(SCOPE* s, const char* name) {
return opvar(s, "push", name);
}
LINE* popvar(SCOPE* s, const char* name) {
return opvar(s, "pop", name);
}
LINE* pushfalse() {
return pushconstant(0);
}
LINEBLOCK* pushtrue() {
LINEBLOCK* blk = mklnblk(pushfalse());
appendln(blk, onetoken("not"));
return blk;
}
LINE* pushthisadd() {
char* pushthisadd[] = { "push", "pointer", "0" };
return mksimpleln(pushthisadd, strcount(pushthisadd));
}
LINE* popthatadd() {
char* popthatadd[] = { "pop", "pointer", "1" };
return mksimpleln(popthatadd, strcount(popthatadd));
}
LINE* pushthatadd() {
char* pushthatadd[] = { "push", "pointer", "1" };
return mksimpleln(pushthatadd, strcount(pushthatadd));
return mkln(pushthatadd);
}
LINE* popthat() {
char* popthat[] = { "pop", "that", "0" };
return mksimpleln(popthat, strcount(popthat));
}
LINE* pushthat() {
char* pushthat[] = { "push", "that", "0" };
return mksimpleln(pushthat, strcount(pushthat));
return mkln(popthat);
}
LINE* pushtemp() {
char* pushtemp[] = { "push", "temp", "0" };
return mksimpleln(pushtemp, strcount(pushtemp));
}
LINE* poptemp() {
char* poptemp[] = { "pop", "temp", "0" };
return mksimpleln(poptemp, strcount(poptemp));
}
LINEBLOCK* compilekeywordconst(SCOPE* s, TERM* t) {
if(!strcmp(t->string, "true")) return pushtrue();
if(!strcmp(t->string, "false")) return mklnblk(pushfalse());
if(!strcmp(t->string, "this")) return mklnblk(pushthisadd());
return mklnblk(pushconstant(0));
}
char* toascii(char c) {
char* result = (char*)malloc(sizeof(char) * (countplaces(c) + 1));
sprintf(result, "%i", c);
return result;
}
LINEBLOCK* compilestrconst(char* str) {
if(str[0] == '\0')
return NULL;
char* pushchar[] = { "push", "constant", "" };
pushchar[2] = toascii(str[0]);
LINEBLOCK* blk = mklnblk(mksimpleln(pushchar, strcount(pushchar)));
free(pushchar[2]);
char* appendchar[] = { "call", "String.appendChar", "2" };
appendln(blk, mksimpleln(appendchar, strcount(appendchar)));
int i = 1;
char c;
while(c = str[i], c != '\0') {
pushchar[2] = toascii(c);
appendln(blk, mksimpleln(pushchar, strcount(pushchar)));
free(pushchar[2]);
appendln(blk, mksimpleln(appendchar, strcount(appendchar)));
i++;
}
char* strsize[] = { "push", "constant", itoa(i) };
char* mknew[] = { "call", "String.new", "1" };
appendlnbefore(blk, mksimpleln(mknew, strcount(mknew)));
appendlnbefore(blk, mksimpleln(strsize, strcount(strsize)));
free(strsize[2]);
return blk;
}
LINEBLOCK* compilearrayitem(SCOPE* s, TERM* t) {
LINEBLOCK* blk = compileexpression(s, t->array->exp);
appendln(blk, pushvar(s, t->array->name));
appendln(blk, onetoken("add"));
appendln(blk, popthatadd());
appendln(blk, pushthat());
return blk;
}
LINEBLOCK* compileterm(SCOPE* s, TERM* t) {
if(t->type == intconstant) return mklnblk(pushconstant(t->integer));
if(t->type == unaryopterm) return pushunaryopterm(s, t);
if(t->type == innerexpression) return compileexpression(s, t->expression);
if(t->type == varname) return mklnblk(pushvar(s, t->string));
if(t->type == subroutcall) return compilesubroutcall(s, t->call);
if(t->type == keywordconstant) return compilekeywordconst(s, t);
if(t->type == stringconstant) return compilestrconst(t->string);
return compilearrayitem(s, t);
}
LINEBLOCK* compileexpression(SCOPE* s, TERM* e) {
LINEBLOCK* blk = compileterm(s, e);
TERM* curr = e->next;
if(curr != NULL) {
while(true) {
blk = mergelnblks(blk, compileterm(s, curr));
if(curr->next != NULL) {
appendln(blk, mathopln(curr->op));
curr = curr->next;
}
else break;
}
appendln(blk, mathopln(e->op));
}
return blk;
}
LINEBLOCK* compileexplist(SCOPE* s, EXPRESSIONLIST* explist) {
LINEBLOCK* head = NULL;
while(explist != NULL) {
head = mergelnblks(head, compileexpression(s, explist->expression));
explist = explist->next;
}
return head;
}
LINEBLOCK* compilecallln(SCOPE* s, SUBROUTDEC* d, SUBROUTCALL* call) {
LINE* ln = mkline(3);
addtoken(ln, ezheapstr("call"));
addtoken(ln, dotlabel(d->class->name, call->name));
int count = countexpressions(call->parameters);
if(d->subroutclass == method)
count++;
addtoken(ln, itoa(count));
return mklnblk(ln);
}
LINEBLOCK* compilesubroutcall(SCOPE* s, SUBROUTCALL* call) {
VAR* v;
SUBROUTDEC* d = getsubroutdecfromcall(s, call, &v);
LINEBLOCK* blk = compilecallln(s, d, call);
if(call->parameters != NULL)
blk = mergelnblks(compileexplist(s, call->parameters), blk);
if(d->subroutclass == method) {
if(call->parentname == NULL)
appendlnbefore(blk, pushthisadd());
else
appendlnbefore(blk, pushvarraw(s, v));
}
// void functions always return 0
// therefore must be thrown away
if(!strcmp(d->type, "void")) {
appendln(blk, poptemp());
}
return blk;
return mkln(pushtemp);
}
LINEBLOCK* compileret(SCOPE* s, TERM* e) {
@ -311,7 +58,7 @@ LINEBLOCK* compileret(SCOPE* s, TERM* e) {
// void subroutdecs return 0
if(e == NULL) {
char* tokens[] = { "push", "constant", "0" };
appendlnbefore(blk, mksimpleln(tokens, strcount(tokens)));
appendlnbefore(blk, mkln(tokens));
} else
blk = mergelnblks(compileexpression(s, e), blk);
@ -329,14 +76,14 @@ LINEBLOCK* compileif(COMPILER* c, SCOPE* s, IFSTATEMENT* st) {
char* truelabel = mkcondlabel("IF_TRUE", mycount);
char* ifgoto[] = { "if-goto", truelabel };
appendln(blk, mksimpleln(ifgoto, strcount(ifgoto)));
appendln(blk, mkln(ifgoto));
char* falselabel = mkcondlabel("IF_FALSE", mycount);
char* gotofalse[] = { "goto", falselabel };
appendln(blk, mksimpleln(gotofalse, strcount(gotofalse)));
appendln(blk, mkln(gotofalse));
char* truelabelln[] = { "label", truelabel };
appendln(blk, mksimpleln(truelabelln, strcount(truelabelln)));
appendln(blk, mkln(truelabelln));
blk = mergelnblks(blk, compilestatements(c, s, st->base->statements));
@ -345,16 +92,16 @@ LINEBLOCK* compileif(COMPILER* c, SCOPE* s, IFSTATEMENT* st) {
if(haselse) {
endlabel = mkcondlabel("IF_END", mycount);
char* endgoto[] = { "goto", endlabel };
appendln(blk, mksimpleln(endgoto, strcount(endgoto)));
appendln(blk, mkln(endgoto));
}
char* falselabelln[] = { "label", falselabel};
appendln(blk, mksimpleln(falselabelln, strcount(falselabelln)));
appendln(blk, mkln(falselabelln));
if(haselse) {
blk = mergelnblks(blk, compilestatements(c, s, st->elsestatements));
char* endlabelln[] = { "label", endlabel };
appendln(blk, mksimpleln(endlabelln, strcount(endlabelln)));
appendln(blk, mkln(endlabelln));
}
return blk;
@ -371,21 +118,21 @@ LINEBLOCK* compilewhile(COMPILER* c, SCOPE* s, CONDSTATEMENT* w) {
char* explabel = mkcondlabel("WHILE_EXP", mycount);
char* explabelln[] = { "label", explabel };
appendlnbefore(blk, mksimpleln(explabelln, strcount(explabelln)));
appendlnbefore(blk, mkln(explabelln));
appendln(blk, onetoken("not"));
char* endlabel = mkcondlabel("WHILE_END", mycount);
char* ifgoto[] = { "if-goto", endlabel };
appendln(blk, mksimpleln(ifgoto, strcount(ifgoto)));
appendln(blk, mkln(ifgoto));
blk = mergelnblks(blk, compilestatements(c, s, w->statements));
char* gotoln[] = { "goto", explabel };
appendln(blk, mksimpleln(gotoln, strcount(gotoln)));
appendln(blk, mkln(gotoln));
char* endlabelln[] = { "label", endlabel };
appendln(blk, mksimpleln(endlabelln, strcount(endlabelln)));
appendln(blk, mkln(endlabelln));
return blk;
}
@ -439,7 +186,7 @@ LINEBLOCK* compilefunbody(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTBODY* b) {
LINE* mksubdeclabel(CLASS* c, SUBROUTDEC* sd) {
char* labelstrs[] = { "function", dotlabel(c->name, sd->name), itoa(countlocalvars(sd->body->vardecs)) };
LINE* label = mksimpleln(labelstrs, strcount(labelstrs));
LINE* label = mkln(labelstrs);
free(labelstrs[1]);
free(labelstrs[2]);
label->next = NULL;
@ -485,9 +232,9 @@ LINEBLOCK* compileconstructor(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* con)
char* size[] = { "push", "constant", itoa(getobjsize(cl)) };
char* memalloc[] = { "call", "Memory.alloc", "1" };
char* poppointer[] = { "pop", "pointer", "0" };
appendln(blk, mksimpleln(size, strcount(size)));
appendln(blk, mksimpleln(memalloc, strcount(memalloc)));
appendln(blk, mksimpleln(poppointer, strcount(poppointer)));
appendln(blk, mkln(size));
appendln(blk, mkln(memalloc));
appendln(blk, mkln(poppointer));
free(size[2]);
if(con->body != NULL)
@ -502,8 +249,8 @@ LINEBLOCK* compilemethod(COMPILER* c, SCOPE* s, CLASS* cl, SUBROUTDEC* m) {
char* pusharg0[] = { "push", "argument", "0" };
char* poppointer[] = { "pop", "pointer", "0" };
appendln(blk, mksimpleln(pusharg0, strcount(pusharg0)));
appendln(blk, mksimpleln(poppointer, strcount(poppointer)));
appendln(blk, mkln(pusharg0));
appendln(blk, mkln(poppointer));
if(m->body != NULL)
return mergelnblks(blk, compilefunbody(c, s, cl, m->body));

4
compiler/compiler.h
View File

@ -5,12 +5,14 @@
#include "vm-lines.h"
#include "compiler-scopes.h"
struct scope;
typedef struct compiler {
pthread_mutex_t ifmutex;
pthread_mutex_t whilemutex;
pthread_mutex_t staticmutex;
CLASS* classes;
SCOPE* globalscope;
struct scope* globalscope;
} COMPILER;
COMPILER* mkcompiler(CLASS* classes);

7
misc/util.c
View File

@ -40,6 +40,13 @@ char* itoa(int i) {
return a;
}
char* dotlabel(char* n1, char* n2) {
int sz = (strlen(n1) + strlen(n2) + 2) * sizeof(char);
char* result = (char*)malloc(sz);
sprintf(result, "%s.%s", n1, n2);
return result;
}
STRINGLIST* onestr(const char* str) {
STRINGLIST* strlist = (STRINGLIST*)malloc(sizeof(STRINGLIST));
strlist->content = ezheapstr(str);

1
misc/util.h
View File

@ -27,6 +27,7 @@ char* ezheapstr(const char* str);
int countplaces(int n);
char* itoa(int i);
void* copy(void* v, int size);
char* dotlabel(char* n1, char* n2);
STRINGLIST* onestr(const char* str);
STRINGLIST* initstrlist(const char** strs, int count);