Class encapsulation
This commit is contained in:
Augusto Gunsch
parent
41e322825f
commit
b5408d3a7e
19
main.c
19
main.c
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@ -44,26 +44,21 @@ int main(int argc, char* argv[]) {
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return errno;
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}
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// info gathering
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int lncount, widestln, maxtokens;
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getinfo(input, &lncount, &widestln, &maxtokens);
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// parsing
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struct line** lns = parse(input, lncount, widestln, maxtokens);
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fclose(input);
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struct Parser* p = mkparser(input);
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parse(p);
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// translating
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translate(lns, lncount, fname);
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// freeing lns
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freelns(lns, lncount);
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struct Translator* t = mktranslator(p->lns, fname);
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translate(t);
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freeparser(p);
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// printing
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printasmlns();
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printasmlns(t);
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// freeing asmlns
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free(fname);
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freeasmlns();
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freetranslator(t);
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return 0;
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}
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85
parser.c
85
parser.c
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@ -4,18 +4,24 @@
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#include <string.h>
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#include "parser.h"
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void freelns(struct line** lns, int lnscount) {
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for(int i = 0; i < lnscount; i++) {
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int tkcount = lns[i]->tokenscount;
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void freelns(struct lnarray* lns) {
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for(int i = 0; i < lns->count; i++) {
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int tkcount = lns->lns[i]->tokenscount;
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for(int j = 0; j < tkcount; j++) {
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free(lns[i]->tokens[j]);
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free(lns->lns[i]->tokens[j]);
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}
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free(lns[i]->tokens);
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free(lns[i]);
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free(lns->lns[i]->tokens);
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free(lns->lns[i]);
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}
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free(lns->lns);
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free(lns);
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}
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void freeparser(struct Parser* p) {
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freelns(p->lns);
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free(p);
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}
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void gountilbrk (FILE* input) {
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char c;
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while(c = fgetc(input), c != -1) {
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@ -26,15 +32,16 @@ void gountilbrk (FILE* input) {
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}
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}
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void getinfo(FILE* input, int* lncount, int* widestln, int* maxtokens) {
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void getinfo(struct Parser* p) {
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p->lns->count = 0;
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p->maxtokens = 0;
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p->widestln = 0;
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char c, nc;
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int lns = 0;
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int widest = 0;
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int currsz = 0;
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int tokens = 0;
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int maxtoks = 0;
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short readsmt = 0;
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while(c = fgetc(input), c != -1) {
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while(c = fgetc(p->input), c != -1) {
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currsz++;
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if(isspace(c)) {
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if(readsmt) {
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@ -42,11 +49,11 @@ void getinfo(FILE* input, int* lncount, int* widestln, int* maxtokens) {
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readsmt = 0;
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}
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if(c == '\n' && tokens > 0) {
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lns++;
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if(currsz > widest)
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widest = currsz;
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if(tokens > maxtoks)
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maxtoks = tokens;
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p->lns->count++;
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if(currsz > p->widestln)
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p->widestln = currsz;
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if(tokens > p->maxtokens)
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p->maxtokens = tokens;
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currsz = 0;
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tokens = 0;
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}
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@ -54,33 +61,43 @@ void getinfo(FILE* input, int* lncount, int* widestln, int* maxtokens) {
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}
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if(c == '/') {
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nc = fgetc(input);
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nc = fgetc(p->input);
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if(nc == '/') {
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gountilbrk(input);
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gountilbrk(p->input);
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continue;
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}
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ungetc(nc, input);
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ungetc(nc, p->input);
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}
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readsmt = 1;
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}
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rewind(input);
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(*lncount) = lns;
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(*widestln) = widest;
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(*maxtokens) = maxtoks;
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rewind(p->input);
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}
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struct line** parse(FILE* input, int lncount, int widestln, int maxtokens) {
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struct line** lns = (struct line**)malloc(sizeof(struct line*)*lncount);
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struct Parser* mkparser(FILE* input) {
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struct Parser* p = (struct Parser*)malloc(sizeof(struct Parser));
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struct lnarray* lns = (struct lnarray*)malloc(sizeof(struct lnarray));
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p->input = input;
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p->lns = lns;
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getinfo(p);
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return p;
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}
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void parse(struct Parser* p) {
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struct line** lns = (struct line**)malloc(sizeof(struct line*)*p->lns->count);
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p->lns->lns = lns;
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p->lns->count = 0;
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char tmp[p->widestln];
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char* tokens[p->maxtokens];
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char c, nc;
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short readsmt = 0;
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char tmp[widestln];
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char* tokens[maxtokens];
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int tmpind = 0;
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int lnsind = 0;
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int tokensind = 0;
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int truelncount = 0;
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while(c = fgetc(input), c != -1) {
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while(c = fgetc(p->input), c != -1) {
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if(isspace(c)) {
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if(readsmt) {
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tmp[tmpind] = '\0';
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@ -101,8 +118,8 @@ struct line** parse(FILE* input, int lncount, int widestln, int maxtokens) {
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}
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newln->tokenscount = tokensind;
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newln->truen = truelncount;
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lns[lnsind] = newln;
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lnsind++;
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lns[p->lns->count] = newln;
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p->lns->count++;
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tokensind = 0;
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}
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}
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@ -110,17 +127,17 @@ struct line** parse(FILE* input, int lncount, int widestln, int maxtokens) {
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}
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if(c == '/') {
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nc = fgetc(input);
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nc = fgetc(p->input);
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if(nc == '/') {
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gountilbrk(input);
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gountilbrk(p->input);
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continue;
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}
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ungetc(nc, input);
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ungetc(nc, p->input);
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}
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tmp[tmpind] = c;
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tmpind++;
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readsmt = 1;
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}
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return lns;
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fclose(p->input);
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}
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18
parser.h
18
parser.h
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@ -6,7 +6,19 @@ struct line {
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int truen;
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};
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void getinfo(FILE* input, int* lncount, int* widestln, int* maxtokens);
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void freelns(struct line** lns, int lnscount);
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struct line** parse(FILE* input, int lncount, int widestln, int maxtokens);
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struct lnarray {
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struct line** lns;
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int count;
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};
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struct Parser {
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FILE* input;
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struct lnarray* lns;
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int widestln;
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int maxtokens;
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};
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struct Parser* mkparser(FILE* input);
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void freeparser(struct Parser* p);
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void parse(struct Parser* p);
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#endif
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242
translator.c
242
translator.c
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@ -5,119 +5,113 @@
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#include "translator.h"
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#include "templates.h"
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struct asmln** asmlns;
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int asmind;
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int asmsize;
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char** toclean;
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int tocleansize;
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int tocleanind;
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void pushtoclean(char* topush) {
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int nextsz = sizeof(char*)*(tocleanind+1);
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if(nextsz >= tocleansize) {
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tocleansize = nextsz * 2;
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toclean = realloc(toclean, tocleansize);
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void pushtoclean(struct Translator* t, char* topush) {
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int nextsz = sizeof(char*)*(t->tocleanind+1);
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if(nextsz >= t->tocleansize) {
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t->tocleansize = nextsz * 2;
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t->toclean = realloc(t->toclean, t->tocleansize);
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}
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toclean[tocleanind] = topush;
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tocleanind++;
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t->toclean[t->tocleanind] = topush;
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t->tocleanind++;
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}
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void freetoclean() {
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for(int i = 0; i < tocleanind; i++) {
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free(toclean[i]);
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}
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free(toclean);
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tocleansize = 0;
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tocleanind = 0;
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void freetoclean(struct Translator* t) {
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for(int i = 0; i < t->tocleanind; i++)
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free(t->toclean[i]);
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free(t->toclean);
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t->tocleansize = 0;
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t->tocleanind = 0;
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}
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void freeasmlns() {
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for(int i = 0; i < asmind; i++) {
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free(asmlns[i]);
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}
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free(asmlns);
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asmsize = 0;
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asmind = 0;
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freetoclean();
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void freeasmlns(struct Translator* t) {
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for(int i = 0; i < t->asmind; i++)
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free(t->asmlns[i]);
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free(t->asmlns);
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t->asmsize = 0;
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t->asmind = 0;
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}
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void printasmlns() {
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for(int i = 0; i < asmind; i++) {
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printf("%s\n", asmlns[i]->instr);
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}
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void freetranslator(struct Translator* t) {
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freeasmlns(t);
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freetoclean(t);
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free(t);
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}
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char* heapstr(const char* input) {
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void printasmlns(struct Translator* t) {
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for(int i = 0; i < t->asmind; i++)
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printf("%s\n", t->asmlns[i]->instr);
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}
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char* heapstr(struct Translator* t, const char* input) {
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char* newstr = (char*)malloc(sizeof(char)*(strlen(input)+1));
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strcpy(newstr, input);
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pushtoclean(newstr);
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pushtoclean(t, newstr);
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return newstr;
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}
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char* switchseg(struct line* ln) {
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char* switchseg(struct Translator* t, struct line* ln) {
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char* seg = ln->tokens[1];
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if(strcmp(seg, "local") == 0)
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return heapstr("@LCL");
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return heapstr(t, "@LCL");
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if(strcmp(seg, "argument") == 0)
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return heapstr("@ARG");
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return heapstr(t, "@ARG");
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if(strcmp(seg, "this") == 0)
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return heapstr("@THIS");
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return heapstr(t, "@THIS");
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if(strcmp(seg, "that") == 0)
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return heapstr("@THAT");
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return heapstr(t, "@THAT");
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fprintf(stderr, "Unrecognized segment '%s'; line %i\n", seg, ln->truen);
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exit(1);
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}
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// produce comment as follows:
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// pop/push segment i
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char* mkcom(struct line* ln, int indlen) {
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char* mkcom(struct Translator* t, struct line* ln, int indlen) {
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int comlen = sizeof(char) * (strlen(ln->tokens[0]) + strlen(ln->tokens[1]) + indlen + 6);
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char* comment = (char*)malloc(comlen);
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snprintf(comment, comlen, "// %s %s %s", ln->tokens[0], ln->tokens[1], ln->tokens[2]);
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pushtoclean(comment);
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pushtoclean(t, comment);
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return comment;
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}
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void checkind(struct line* ln, int indsz) {
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for(int i = 0; i < indsz; i++) {
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for(int i = 0; i < indsz; i++)
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if(!isdigit(ln->tokens[2][i])) {
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fprintf(stderr, "Invalid index '%s'; line %i\n", ln->tokens[2], ln->truen);
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exit(1);
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}
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}
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}
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char* mkind(struct line* ln, int indsz) {
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char* mkind(struct Translator* t, struct line* ln, int indsz) {
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int newsz = sizeof(char) * (indsz + 2);
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char* newind = (char*)malloc(newsz);
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snprintf(newind, newsz, "@%s", ln->tokens[2]);
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pushtoclean(newind);
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pushtoclean(t, newind);
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return newind;
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}
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char* mkstatind(struct line* ln, int indsz, char* fname) {
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int fnamelen = strlen(fname);
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char* mkstatind(struct Translator* t, struct line* ln, int indsz) {
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int fnamelen = strlen(t->fname);
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int newsz = sizeof(char) * (fnamelen + indsz + 3);
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char* newind = (char*)malloc(newsz);
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snprintf(newind, newsz, "@%s.%s", fname, ln->tokens[2]);
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pushtoclean(newind);
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snprintf(newind, newsz, "@%s.%s", t->fname, ln->tokens[2]);
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pushtoclean(t, newind);
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return newind;
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}
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char* mktempind(struct line* ln, int indsz) {
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char* mktempind(struct Translator* t, struct line* ln, int indsz) {
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int intind = atoi(ln->tokens[2]);
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int newsz = sizeof(char) * (indsz + 3);
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char* newind = (char*)malloc(newsz);
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snprintf(newind, newsz, "@%i", intind+5);
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pushtoclean(newind);
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pushtoclean(t, newind);
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return newind;
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}
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void checkasmsize(int toadd) {
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int targ = sizeof(struct asmln*)*(asmind+toadd);
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if(targ >= asmsize) {
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asmsize = targ * 2;
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asmlns = (struct asmln**)realloc(asmlns, asmsize);
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void checkasmsize(struct Translator* t, int toadd) {
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int targ = sizeof(struct asmln*)*(t->asmind+toadd);
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if(targ >= t->asmsize) {
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t->asmsize = targ * 2;
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t->asmlns = (struct asmln**)realloc(t->asmlns, t->asmsize);
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}
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}
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@ -140,116 +134,116 @@ void checkopamnt(int amnt, struct line* ln) {
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}
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}
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void addasmlns(struct line* ln, char** insts, int instcount) {
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void addasmlns(struct Translator* t, struct line* ln, char** insts, int instcount) {
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for(int i = 0; i < instcount; i++) {
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asmlns[asmind] = mkasmln(ln, insts[i]);
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asmind++;
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t->asmlns[t->asmind] = mkasmln(ln, insts[i]);
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t->asmind++;
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}
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}
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void startpoppush(struct line* ln, int indlen, char** insts) {
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void startpoppush(struct Translator* t, struct line* ln, int indlen, char** insts) {
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// // operation segment i
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insts[0] = mkcom(ln, indlen);
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insts[0] = mkcom(t, ln, indlen);
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// @segment
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insts[1] = switchseg(ln);
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insts[1] = switchseg(t, ln);
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// D=M
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insts[2] = heapstr("D=M");
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insts[2] = heapstr(t, "D=M");
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// @i
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checkind(ln, indlen);
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insts[3] = mkind(ln, indlen);
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insts[3] = mkind(t, ln, indlen);
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}
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void pushcons(struct line* ln, int indlen) {
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checkasmsize(TPUSHCONSN);
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void pushcons(struct Translator* t, struct line* ln, int indlen) {
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checkasmsize(t, TPUSHCONSN);
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// // push constant i
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tpushcons[0] = mkcom(ln, indlen);
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tpushcons[0] = mkcom(t, ln, indlen);
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// @i
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checkind(ln, indlen);
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tpushcons[1] = mkind(ln, indlen);
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tpushcons[1] = mkind(t, ln, indlen);
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addasmlns(ln, tpushcons, TPUSHCONSN);
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addasmlns(t, ln, tpushcons, TPUSHCONSN);
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}
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void pushstat(struct line* ln, int indlen, char* fname) {
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checkasmsize(TPUSHSTATN);
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void pushstat(struct Translator* t, struct line* ln, int indlen) {
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checkasmsize(t, TPUSHSTATN);
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// // push static i
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tpushstat[0] = mkcom(ln, indlen);
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tpushstat[0] = mkcom(t, ln, indlen);
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// @fname.i
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checkind(ln, indlen);
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tpushstat[1] = mkstatind(ln, indlen, fname);
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tpushstat[1] = mkstatind(t, ln, indlen);
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|
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addasmlns(ln, tpushstat, TPUSHSTATN);
|
||||
addasmlns(t, ln, tpushstat, TPUSHSTATN);
|
||||
}
|
||||
|
||||
void pushtemp(struct line* ln, int indlen) {
|
||||
checkasmsize(TPUSHSTATN);
|
||||
void pushtemp(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkasmsize(t, TPUSHSTATN);
|
||||
|
||||
// // pop static i
|
||||
tpushtemp[0] = mkcom(ln, indlen);
|
||||
tpushtemp[0] = mkcom(t, ln, indlen);
|
||||
|
||||
// @5+i
|
||||
checkind(ln, indlen);
|
||||
tpushtemp[1] = mktempind(ln, indlen);
|
||||
tpushtemp[1] = mktempind(t, ln, indlen);
|
||||
|
||||
addasmlns(ln, tpushtemp, TPUSHTEMP);
|
||||
addasmlns(t, ln, tpushtemp, TPUSHTEMP);
|
||||
}
|
||||
|
||||
void mkpush(struct line* ln, int indlen) {
|
||||
checkasmsize(TPUSHN);
|
||||
void push(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkasmsize(t, TPUSHN);
|
||||
|
||||
startpoppush(ln, indlen, tpush);
|
||||
startpoppush(t, ln, indlen, tpush);
|
||||
|
||||
addasmlns(ln, tpush, TPUSHN);
|
||||
addasmlns(t, ln, tpush, TPUSHN);
|
||||
}
|
||||
|
||||
void popstat(struct line* ln, int indlen, char* fname) {
|
||||
checkasmsize(TPOPSTATN);
|
||||
void popstat(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkasmsize(t, TPOPSTATN);
|
||||
|
||||
// // pop static i
|
||||
tpopstat[0] = mkcom(ln, indlen);
|
||||
tpopstat[0] = mkcom(t, ln, indlen);
|
||||
|
||||
// @fname.i
|
||||
checkind(ln, indlen);
|
||||
tpopstat[6] = mkstatind(ln, indlen, fname);
|
||||
tpopstat[6] = mkstatind(t, ln, indlen);
|
||||
|
||||
// M=D
|
||||
tpopstat[7] = heapstr("M=D");
|
||||
tpopstat[7] = heapstr(t, "M=D");
|
||||
|
||||
addasmlns(ln, tpopstat, TPOPSTATN);
|
||||
addasmlns(t, ln, tpopstat, TPOPSTATN);
|
||||
}
|
||||
|
||||
void poptemp(struct line* ln, int indlen) {
|
||||
checkasmsize(TPOPTEMPN);
|
||||
void poptemp(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkasmsize(t, TPOPTEMPN);
|
||||
|
||||
// // pop static i
|
||||
tpoptemp[0] = mkcom(ln, indlen);
|
||||
tpoptemp[0] = mkcom(t, ln, indlen);
|
||||
|
||||
// @5+i
|
||||
checkind(ln, indlen);
|
||||
tpoptemp[5] = mktempind(ln, indlen);
|
||||
tpoptemp[5] = mktempind(t, ln, indlen);
|
||||
|
||||
// M=D
|
||||
tpoptemp[6] = heapstr("M=D");
|
||||
tpoptemp[6] = heapstr(t, "M=D");
|
||||
|
||||
addasmlns(ln, tpoptemp, TPOPTEMPN);
|
||||
addasmlns(t, ln, tpoptemp, TPOPTEMPN);
|
||||
}
|
||||
|
||||
void mkpop(struct line* ln, int indlen) {
|
||||
checkasmsize(TPOPN);
|
||||
void pop(struct Translator* t, struct line* ln, int indlen) {
|
||||
checkasmsize(t, TPOPN);
|
||||
|
||||
startpoppush(ln, indlen, tpop);
|
||||
startpoppush(t, ln, indlen, tpop);
|
||||
|
||||
addasmlns(ln, tpop, TPOPN);
|
||||
addasmlns(t, ln, tpop, TPOPN);
|
||||
}
|
||||
|
||||
void switchop(struct line* ln, char* fname) {
|
||||
void switchop(struct Translator* t, struct line* ln) {
|
||||
char* op = ln->tokens[0];
|
||||
|
||||
if(strcmp(op, "push") == 0) {
|
||||
|
|
@ -258,16 +252,16 @@ void switchop(struct line* ln, char* fname) {
|
|||
int indlen = strlen(ln->tokens[2]);
|
||||
|
||||
if(strcmp(seg, "constant") == 0)
|
||||
pushcons(ln, indlen);
|
||||
pushcons(t, ln, indlen);
|
||||
|
||||
else if(strcmp(seg, "static") == 0)
|
||||
pushstat(ln, indlen, fname);
|
||||
pushstat(t, ln, indlen);
|
||||
|
||||
else if(strcmp(seg, "temp") == 0)
|
||||
pushtemp(ln, indlen);
|
||||
pushtemp(t, ln, indlen);
|
||||
|
||||
else
|
||||
mkpush(ln, indlen);
|
||||
push(t, ln, indlen);
|
||||
}
|
||||
else if(strcmp(op, "pop") == 0) {
|
||||
checkopamnt(3, ln);
|
||||
|
|
@ -275,27 +269,33 @@ void switchop(struct line* ln, char* fname) {
|
|||
int indlen = strlen(ln->tokens[2]);
|
||||
|
||||
if(strcmp(seg, "static") == 0)
|
||||
popstat(ln, indlen, fname);
|
||||
popstat(t, ln, indlen);
|
||||
|
||||
else if(strcmp(seg, "temp") == 0)
|
||||
poptemp(ln, indlen);
|
||||
poptemp(t, ln, indlen);
|
||||
|
||||
else
|
||||
mkpop(ln, indlen);
|
||||
pop(t, ln, indlen);
|
||||
}
|
||||
}
|
||||
|
||||
void translate(struct line** lns, int lnscount, char* fname) {
|
||||
asmsize = sizeof(struct asmln*)*(lnscount * 15);
|
||||
asmind = 0;
|
||||
asmlns = (struct asmln**)malloc(asmsize);
|
||||
|
||||
tocleanind = 0;
|
||||
tocleansize = sizeof(char*)*(lnscount * 5);
|
||||
toclean = (char**)malloc(tocleansize);
|
||||
|
||||
for(int i = 0; i < lnscount; i++) {
|
||||
struct line* ln = lns[i];
|
||||
switchop(ln, fname);
|
||||
}
|
||||
void translate(struct Translator* t) {
|
||||
for(int i = 0; i < t->lns->count; i++)
|
||||
switchop(t, t->lns->lns[i]);
|
||||
}
|
||||
|
||||
struct Translator* mktranslator(struct lnarray* lns, char* fname) {
|
||||
struct Translator* t = (struct Translator*)malloc(sizeof(struct Translator));
|
||||
t->asmsize = sizeof(struct asmln*)*(lns->count * 15);
|
||||
t->asmind = 0;
|
||||
t->asmlns = (struct asmln**)malloc(t->asmsize);
|
||||
|
||||
t->tocleanind = 0;
|
||||
t->tocleansize = sizeof(char*)*(lns->count * 5);
|
||||
t->toclean = (char**)malloc(t->tocleansize);
|
||||
|
||||
t->lns = lns;
|
||||
t->fname = fname;
|
||||
|
||||
return t;
|
||||
}
|
||||
|
|
|
|||
18
translator.h
18
translator.h
|
|
@ -7,7 +7,19 @@ struct asmln {
|
|||
int truen;
|
||||
};
|
||||
|
||||
void freeasmlns();
|
||||
void printasmlns();
|
||||
void translate(struct line** lns, int lnscount, char* fname);
|
||||
struct Translator {
|
||||
struct asmln** asmlns;
|
||||
int asmind;
|
||||
int asmsize;
|
||||
char** toclean;
|
||||
int tocleansize;
|
||||
int tocleanind;
|
||||
struct lnarray* lns;
|
||||
char* fname;
|
||||
};
|
||||
|
||||
void freetranslator(struct Translator* t);
|
||||
void printasmlns(struct Translator* t);
|
||||
void translate(struct Translator* t);
|
||||
struct Translator* mktranslator(struct lnarray* lns, char* fname);
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in New Issue