Run through clang-format.
This commit is contained in:
David Given
parent
03b7202e54
commit
2183c6c622
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@ -40,7 +40,8 @@ static void emitstruct(Nonterm nts, int ntnumber);
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static void emitterms(Term terms);
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static void emittest(Tree t, char* v, char* suffix);
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int main(int argc, char *argv[]) {
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int main(int argc, char* argv[])
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{
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int c, i;
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Nonterm p;
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@ -57,21 +58,28 @@ int main(int argc, char *argv[]) {
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prefix = &argv[i][2];
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else if (strncmp(argv[i], "-p", 2) == 0 && i + 1 < argc)
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prefix = argv[++i];
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else if (*argv[i] == '-' && argv[i][1]) {
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else if (*argv[i] == '-' && argv[i][1])
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{
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yyerror("usage: %s [-T | -I | -p prefix | -maxcost=ddd ]... [ [ input ] output \n",
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argv[0]);
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exit(1);
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} else if (infp == NULL) {
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}
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else if (infp == NULL)
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{
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if (strcmp(argv[i], "-") == 0)
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infp = stdin;
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else if ((infp = fopen(argv[i], "r")) == NULL) {
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else if ((infp = fopen(argv[i], "r")) == NULL)
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{
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yyerror("%s: can't read `%s'\n", argv[0], argv[i]);
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exit(1);
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}
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} else if (outfp == NULL) {
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}
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else if (outfp == NULL)
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{
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if (strcmp(argv[i], "-") == 0)
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outfp = stdout;
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if ((outfp = fopen(argv[i], "w")) == NULL) {
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if ((outfp = fopen(argv[i], "w")) == NULL)
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{
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yyerror("%s: can't write `%s'\n", argv[0], argv[i]);
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exit(1);
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}
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@ -110,10 +118,12 @@ int main(int argc, char *argv[]) {
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}
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/* alloc - allocate nbytes or issue fatal error */
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void *alloc(int nbytes) {
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void* alloc(int nbytes)
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{
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void* p = calloc(1, nbytes);
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if (p == NULL) {
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if (p == NULL)
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{
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yyerror("out of memory\n");
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exit(1);
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}
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@ -121,7 +131,8 @@ void *alloc(int nbytes) {
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}
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/* stringf - format and save a string */
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static char *stringf(char *fmt, ...) {
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static char* stringf(char* fmt, ...)
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{
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va_list ap;
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char* s, buf[512];
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@ -131,8 +142,10 @@ static char *stringf(char *fmt, ...) {
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return strcpy(alloc(strlen(buf) + 1), buf);
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}
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struct entry {
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union {
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struct entry
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{
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union
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{
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char* name;
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struct term t;
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struct nonterm nt;
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@ -142,7 +155,8 @@ struct entry {
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#define HASHSIZE (sizeof table / sizeof table[0])
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/* hash - return hash number for str */
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static unsigned hash(char *str) {
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static unsigned hash(char* str)
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{
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unsigned h = 0;
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while (*str)
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@ -151,7 +165,8 @@ static unsigned hash(char *str) {
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}
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/* lookup - lookup symbol name */
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static void *lookup(char *name) {
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static void* lookup(char* name)
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{
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struct entry* p = table[hash(name) % HASHSIZE];
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for (; p; p = p->link)
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@ -161,7 +176,8 @@ static void *lookup(char *name) {
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}
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/* install - install symbol name */
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static void *install(char *name) {
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static void* install(char* name)
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{
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struct entry* p = alloc(sizeof *p);
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int i = hash(name) % HASHSIZE;
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@ -172,7 +188,8 @@ static void *install(char *name) {
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}
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/* nonterm - create a new terminal id, if necessary */
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Nonterm nonterm(char *id) {
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Nonterm nonterm(char* id)
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{
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Nonterm p = lookup(id), * q = &nts;
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if (p && p->kind == NONTERM)
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@ -193,7 +210,8 @@ Nonterm nonterm(char *id) {
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}
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/* term - create a new terminal id with external symbol number esn */
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Term term(char *id, int esn) {
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Term term(char* id, int esn)
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{
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Term p = lookup(id), * q = &terms;
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if (p)
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@ -214,7 +232,8 @@ Term term(char *id, int esn) {
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}
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/* tree - create & initialize a tree node with the given fields */
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Tree tree(char *id, Tree left, Tree right) {
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Tree tree(char* id, Tree left, Tree right)
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{
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Tree t = alloc(sizeof *t);
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Term p = lookup(id);
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int arity = 0;
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@ -223,12 +242,15 @@ Tree tree(char *id, Tree left, Tree right) {
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arity = 2;
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else if (left)
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arity = 1;
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if (p == NULL && arity > 0) {
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if (p == NULL && arity > 0)
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{
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yyerror("undefined terminal `%s'\n", id);
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p = term(id, -1);
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} else if (p == NULL && arity == 0)
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}
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else if (p == NULL && arity == 0)
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p = (Term)nonterm(id);
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else if (p && p->kind == NONTERM && arity > 0) {
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else if (p && p->kind == NONTERM && arity > 0)
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{
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yyerror("`%s' is a non-terminal\n", id);
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p = term(id, -1);
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}
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@ -246,7 +268,8 @@ Tree tree(char *id, Tree left, Tree right) {
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}
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/* rule - create & initialize a rule with the given fields */
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Rule rule(char *id, Tree pattern, int ern, int cost) {
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Rule rule(char* id, Tree pattern, int ern, int cost)
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{
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Rule r = alloc(sizeof *r), *q;
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Term p = pattern->op;
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@ -259,10 +282,13 @@ Rule rule(char *id, Tree pattern, int ern, int cost) {
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r->pattern = pattern;
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r->ern = ern;
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r->cost = cost;
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if (p->kind == TERM) {
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if (p->kind == TERM)
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{
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r->next = p->rules;
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p->rules = r;
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} else if (pattern->left == NULL && pattern->right == NULL) {
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}
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else if (pattern->left == NULL && pattern->right == NULL)
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{
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Nonterm p = pattern->op;
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r->chain = p->chain;
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p->chain = r;
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@ -277,17 +303,26 @@ Rule rule(char *id, Tree pattern, int ern, int cost) {
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}
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/* print - formatted output */
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static void print(char *fmt, ...) {
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static void print(char* fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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for (; *fmt; fmt++)
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if (*fmt == '%')
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switch (*++fmt) {
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case 'd': fprintf(outfp, "%d", va_arg(ap, int)); break;
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case 's': fputs(va_arg(ap, char *), outfp); break;
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case 'P': fprintf(outfp, "%s_", prefix); break;
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case 'T': {
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switch (*++fmt)
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{
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case 'd':
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fprintf(outfp, "%d", va_arg(ap, int));
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break;
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case 's':
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fputs(va_arg(ap, char*), outfp);
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break;
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case 'P':
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fprintf(outfp, "%s_", prefix);
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break;
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case 'T':
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{
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Tree t = va_arg(ap, Tree);
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print("%S", t->op);
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if (t->left && t->right)
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@ -296,19 +331,29 @@ static void print(char *fmt, ...) {
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print("(%T)", t->left);
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break;
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}
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case 'R': {
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case 'R':
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{
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Rule r = va_arg(ap, Rule);
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print("%S: %T", r->lhs, r->pattern);
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break;
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}
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case 'S': fputs(va_arg(ap, Term)->name, outfp); break;
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case '1': case '2': case '3': case '4': case '5': {
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case 'S':
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fputs(va_arg(ap, Term)->name, outfp);
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break;
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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{
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int n = *fmt - '0';
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while (n-- > 0)
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putc('\t', outfp);
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break;
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}
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default: putc(*fmt, outfp); break;
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default:
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putc(*fmt, outfp);
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break;
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}
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else
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putc(*fmt, outfp);
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@ -316,7 +361,8 @@ static void print(char *fmt, ...) {
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}
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/* reach - mark all non-terminals in tree t as reachable */
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static void reach(Tree t) {
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static void reach(Tree t)
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{
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Nonterm p = t->op;
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if (p->kind == NONTERM)
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@ -329,7 +375,8 @@ static void reach(Tree t) {
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}
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/* ckreach - mark all non-terminals reachable from p */
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static void ckreach(Nonterm p) {
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static void ckreach(Nonterm p)
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{
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Rule r;
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p->reached = 1;
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@ -338,48 +385,65 @@ static void ckreach(Nonterm p) {
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}
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/* emitcase - emit one case in function state */
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static void emitcase(Term p, int ntnumber) {
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static void emitcase(Term p, int ntnumber)
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{
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Rule r;
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print("%1case %d: /* %S */\n", p->esn, p);
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switch (p->arity) {
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case 0: case -1:
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if (!Tflag) {
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switch (p->arity)
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{
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case 0:
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case -1:
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if (!Tflag)
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{
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emitleaf(p, ntnumber);
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return;
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}
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break;
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case 1: print("%2assert(l);\n"); break;
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case 2: print("%2assert(l && r);\n"); break;
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default: assert(0);
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case 1:
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print("%2assert(l);\n");
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break;
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case 2:
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print("%2assert(l && r);\n");
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break;
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default:
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assert(0);
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}
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for (r = p->rules; r; r = r->next) {
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switch (p->arity) {
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case 0: case -1:
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for (r = p->rules; r; r = r->next)
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{
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switch (p->arity)
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{
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case 0:
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case -1:
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print("%2{%1/* %R */\n%3c = ", r);
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break;
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case 1:
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if (r->pattern->nterms > 1) {
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if (r->pattern->nterms > 1)
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{
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print("%2if (%1/* %R */\n", r);
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emittest(r->pattern->left, "l", " ");
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print("%2) {\n%3c = ");
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} else
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}
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else
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print("%2{%1/* %R */\n%3c = ", r);
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emitcost(r->pattern->left, "l");
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break;
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case 2:
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if (r->pattern->nterms > 1) {
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if (r->pattern->nterms > 1)
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{
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print("%2if (%1/* %R */\n", r);
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emittest(r->pattern->left, "l",
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r->pattern->right->nterms ? " && " : " ");
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emittest(r->pattern->right, "r", " ");
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print("%2) {\n%3c = ");
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} else
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}
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else
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print("%2{%1/* %R */\n%3c = ", r);
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emitcost(r->pattern->left, "l");
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emitcost(r->pattern->right, "r");
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break;
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default: assert(0);
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default:
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assert(0);
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}
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print("%d;\n", r->cost);
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emitrecord("\t\t\t", r, 0);
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@ -389,7 +453,8 @@ static void emitcase(Term p, int ntnumber) {
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}
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/* emitclosure - emit the closure functions */
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static void emitclosure(Nonterm nts) {
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static void emitclosure(Nonterm nts)
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{
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Nonterm p;
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for (p = nts; p; p = p->link)
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@ -397,7 +462,8 @@ static void emitclosure(Nonterm nts) {
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print("static void %Pclosure_%S(struct %Pstate *, int);\n", p);
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print("\n");
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for (p = nts; p; p = p->link)
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if (p->chain) {
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if (p->chain)
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{
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Rule r;
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print("static void %Pclosure_%S(struct %Pstate *p, int c) {\n", p);
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for (r = p->chain; r; r = r->chain)
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@ -407,26 +473,31 @@ static void emitclosure(Nonterm nts) {
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}
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/* emitcost - emit cost computation for tree t */
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static void emitcost(Tree t, char *v) {
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static void emitcost(Tree t, char* v)
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{
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Nonterm p = t->op;
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if (p->kind == TERM) {
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if (p->kind == TERM)
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{
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if (t->left)
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emitcost(t->left, stringf("%s->left", v));
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if (t->right)
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emitcost(t->right, stringf("%s->right", v));
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} else
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}
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else
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print("%s->cost[%P%S_NT] + ", v, p);
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}
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/* emitdefs - emit non-terminal defines and data structures */
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static void emitdefs(Nonterm nts, int ntnumber) {
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static void emitdefs(Nonterm nts, int ntnumber)
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{
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Nonterm p;
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for (p = nts; p; p = p->link)
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print("#define %P%S_NT %d\n", p, p->number);
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print("int %Pmax_nt = %d;\n\n", ntnumber);
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if (Iflag) {
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if (Iflag)
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{
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print("char *%Pntname[] = {\n%10,\n");
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for (p = nts; p; p = p->link)
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print("%1\"%S\",\n", p);
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@ -435,7 +506,8 @@ static void emitdefs(Nonterm nts, int ntnumber) {
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}
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/* emitfuncs - emit functions to access node fields */
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static void emitfuncs(void) {
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static void emitfuncs(void)
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{
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print("int %Pop_label(NODEPTR_TYPE p) {\n"
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"%1%Passert(p, PANIC(\"NULL tree in %Pop_label\\n\"));\n"
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"%1return OP_LABEL(p);\n}\n\n");
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@ -450,7 +522,8 @@ static void emitfuncs(void) {
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}
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/* emitheader - emit initial definitions */
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static void emitheader(void) {
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static void emitheader(void)
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{
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print("#include <limits.h>\n#include <stdlib.h>\n");
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print("#ifndef STATE_TYPE\n#define STATE_TYPE int\n#endif\n");
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print("#ifndef ALLOC\n#define ALLOC(n) malloc(n)\n#endif\n"
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@ -460,13 +533,17 @@ static void emitheader(void) {
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}
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/* computekids - compute paths to kids in tree t */
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static char *computekids(Tree t, char *v, char *bp, int *ip) {
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static char* computekids(Tree t, char* v, char* bp, int* ip)
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{
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Term p = t->op;
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if (p->kind == NONTERM) {
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if (p->kind == NONTERM)
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{
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sprintf(bp, "\t\tkids[%d] = %s;\n", (*ip)++, v);
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bp += strlen(bp);
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} else if (p->arity > 0) {
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}
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else if (p->arity > 0)
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{
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bp = computekids(t->left, stringf("LEFT_CHILD(%s)", v), bp, ip);
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if (p->arity == 2)
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bp = computekids(t->right, stringf("RIGHT_CHILD(%s)", v), bp, ip);
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@ -475,12 +552,14 @@ static char *computekids(Tree t, char *v, char *bp, int *ip) {
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}
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/* emitkids - emit burm_kids */
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static void emitkids(Rule rules, int nrules) {
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static void emitkids(Rule rules, int nrules)
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{
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int i;
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Rule r, * rc = alloc((nrules + 1) * sizeof *rc);
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char** str = alloc((nrules + 1) * sizeof *str);
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for (i = 0, r = rules; r; r = r->link) {
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for (i = 0, r = rules; r; r = r->link)
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{
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int j = 0;
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char buf[1024], * bp = buf;
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*computekids(r->pattern, "p", bp, &j) = 0;
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||||
|
|
@ -495,7 +574,8 @@ static void emitkids(Rule rules, int nrules) {
|
|||
"%1%Passert(p, PANIC(\"NULL tree in %Pkids\\n\"));\n"
|
||||
"%1%Passert(kids, PANIC(\"NULL kids in %Pkids\\n\"));\n"
|
||||
"%1switch (eruleno) {\n");
|
||||
for (i = 0; r = rc[i]; i++) {
|
||||
for (i = 0; r = rc[i]; i++)
|
||||
{
|
||||
for (; r; r = r->kids)
|
||||
print("%1case %d: /* %R */\n", r->ern, r);
|
||||
print("%s%2break;\n", str[i]);
|
||||
|
|
@ -504,7 +584,8 @@ static void emitkids(Rule rules, int nrules) {
|
|||
}
|
||||
|
||||
/* emitlabel - emit the labelling functions */
|
||||
static void emitlabel(Nonterm start) {
|
||||
static void emitlabel(Nonterm start)
|
||||
{
|
||||
print("static void %Plabel1(NODEPTR_TYPE p) {\n"
|
||||
"%1%Passert(p, PANIC(\"NULL tree in %Plabel\\n\"));\n"
|
||||
"%1switch (%Parity[OP_LABEL(p)]) {\n"
|
||||
|
|
@ -526,15 +607,18 @@ static void emitlabel(Nonterm start) {
|
|||
print(
|
||||
"STATE_TYPE %Plabel(NODEPTR_TYPE p) {\n%1%Plabel1(p);\n"
|
||||
"%1return ((struct %Pstate *)STATE_LABEL(p))->rule.%P%S ? STATE_LABEL(p) : 0;\n"
|
||||
"}\n\n", start);
|
||||
"}\n\n",
|
||||
start);
|
||||
}
|
||||
|
||||
/* closure - fill in cost & rule with results of chain rules w/p as rhs */
|
||||
static void closure(int cost[], Rule rule[], Nonterm p, int c) {
|
||||
static void closure(int cost[], Rule rule[], Nonterm p, int c)
|
||||
{
|
||||
Rule r;
|
||||
|
||||
for (r = p->chain; r; r = r->chain)
|
||||
if (c + r->cost < cost[r->lhs->number]) {
|
||||
if (c + r->cost < cost[r->lhs->number])
|
||||
{
|
||||
cost[r->lhs->number] = c + r->cost;
|
||||
rule[r->lhs->number] = r;
|
||||
closure(cost, rule, r->lhs, c + r->cost);
|
||||
|
|
@ -542,22 +626,26 @@ static void closure(int cost[], Rule rule[], Nonterm p, int c) {
|
|||
}
|
||||
|
||||
/* emitleaf - emit state code for a leaf */
|
||||
static void emitleaf(Term p, int ntnumber) {
|
||||
static void emitleaf(Term p, int ntnumber)
|
||||
{
|
||||
int i;
|
||||
Rule r;
|
||||
static int* cost;
|
||||
static Rule* rule;
|
||||
|
||||
if (cost == NULL) {
|
||||
if (cost == NULL)
|
||||
{
|
||||
cost = alloc((ntnumber + 1) * sizeof *cost);
|
||||
rule = alloc((ntnumber + 1) * sizeof *rule);
|
||||
}
|
||||
for (i = 0; i <= ntnumber; i++) {
|
||||
for (i = 0; i <= ntnumber; i++)
|
||||
{
|
||||
cost[i] = maxcost;
|
||||
rule[i] = NULL;
|
||||
}
|
||||
for (r = p->rules; r; r = r->next)
|
||||
if (r->pattern->left == NULL && r->pattern->right == NULL) {
|
||||
if (r->pattern->left == NULL && r->pattern->right == NULL)
|
||||
{
|
||||
cost[r->lhs->number] = r->cost;
|
||||
rule[r->lhs->number] = r;
|
||||
closure(cost, rule, r->lhs, r->cost);
|
||||
|
|
@ -578,37 +666,45 @@ static void emitleaf(Term p, int ntnumber) {
|
|||
}
|
||||
|
||||
/* computents - fill in bp with burm_nts vector for tree t */
|
||||
static char *computents(Tree t, char *bp) {
|
||||
if (t) {
|
||||
static char* computents(Tree t, char* bp)
|
||||
{
|
||||
if (t)
|
||||
{
|
||||
Nonterm p = t->op;
|
||||
if (p->kind == NONTERM) {
|
||||
if (p->kind == NONTERM)
|
||||
{
|
||||
sprintf(bp, "%s_%s_NT, ", prefix, p->name);
|
||||
bp += strlen(bp);
|
||||
} else
|
||||
}
|
||||
else
|
||||
bp = computents(t->right, computents(t->left, bp));
|
||||
}
|
||||
return bp;
|
||||
}
|
||||
|
||||
/* emitnts - emit burm_nts ragged array */
|
||||
static void emitnts(Rule rules, int nrules) {
|
||||
static void emitnts(Rule rules, int nrules)
|
||||
{
|
||||
Rule r;
|
||||
int i, j, * nts = alloc(nrules * sizeof *nts);
|
||||
char** str = alloc(nrules * sizeof *str);
|
||||
|
||||
for (i = 0, r = rules; r; r = r->link) {
|
||||
for (i = 0, r = rules; r; r = r->link)
|
||||
{
|
||||
char buf[1024];
|
||||
*computents(r->pattern, buf) = 0;
|
||||
for (j = 0; str[j] && strcmp(str[j], buf); j++)
|
||||
;
|
||||
if (str[j] == NULL) {
|
||||
if (str[j] == NULL)
|
||||
{
|
||||
print("static short %Pnts_%d[] = { %s0 };\n", j, buf);
|
||||
str[j] = strcpy(alloc(strlen(buf) + 1), buf);
|
||||
}
|
||||
nts[i++] = j;
|
||||
}
|
||||
print("\nshort *%Pnts[] = {\n");
|
||||
for (i = j = 0, r = rules; r; r = r->link) {
|
||||
for (i = j = 0, r = rules; r; r = r->link)
|
||||
{
|
||||
for (; j < r->ern; j++)
|
||||
print("%10,%1/* %d */\n", j);
|
||||
print("%1%Pnts_%d,%1/* %d */\n", nts[i++], j++);
|
||||
|
|
@ -617,7 +713,8 @@ static void emitnts(Rule rules, int nrules) {
|
|||
}
|
||||
|
||||
/* emitrecord - emit code that tests for a winning match of rule r */
|
||||
static void emitrecord(char *pre, Rule r, int cost) {
|
||||
static void emitrecord(char* pre, Rule r, int cost)
|
||||
{
|
||||
print("%sif (", pre);
|
||||
if (Tflag)
|
||||
print("%Ptrace(%Pnp, %d, c + %d, p->cost[%P%S_NT]), ",
|
||||
|
|
@ -632,10 +729,12 @@ static void emitrecord(char *pre, Rule r, int cost) {
|
|||
}
|
||||
|
||||
/* emitrule - emit decoding vectors and burm_rule */
|
||||
static void emitrule(Nonterm nts) {
|
||||
static void emitrule(Nonterm nts)
|
||||
{
|
||||
Nonterm p;
|
||||
|
||||
for (p = nts; p; p = p->link) {
|
||||
for (p = nts; p; p = p->link)
|
||||
{
|
||||
Rule r;
|
||||
print("static short %Pdecode_%S[] = {\n%10,\n", p);
|
||||
for (r = p->rules; r; r = r->decode)
|
||||
|
|
@ -644,15 +743,18 @@ static void emitrule(Nonterm nts) {
|
|||
}
|
||||
print("int %Prule(STATE_TYPE state, int goalnt) {\n"
|
||||
"%1%Passert(goalnt >= 1 && goalnt <= %d, PANIC(\"Bad goal nonterminal %%d in %Prule\\n\", goalnt));\n"
|
||||
"%1if (!state)\n%2return 0;\n%1switch (goalnt) {\n", ntnumber);
|
||||
"%1if (!state)\n%2return 0;\n%1switch (goalnt) {\n",
|
||||
ntnumber);
|
||||
for (p = nts; p; p = p->link)
|
||||
print("%1case %P%S_NT:"
|
||||
"%1return %Pdecode_%S[((struct %Pstate *)state)->rule.%P%S];\n", p, p, p);
|
||||
"%1return %Pdecode_%S[((struct %Pstate *)state)->rule.%P%S];\n",
|
||||
p, p, p);
|
||||
print("%1default:\n%2%Passert(0, PANIC(\"Bad goal nonterminal %%d in %Prule\\n\", goalnt));\n%1}\n%1return 0;\n}\n\n");
|
||||
}
|
||||
|
||||
/* emitstate - emit state function */
|
||||
static void emitstate(Term terms, Nonterm start, int ntnumber) {
|
||||
static void emitstate(Term terms, Nonterm start, int ntnumber)
|
||||
{
|
||||
int i;
|
||||
Term p;
|
||||
|
||||
|
|
@ -663,7 +765,8 @@ static void emitstate(Term terms, Nonterm start, int ntnumber) {
|
|||
print("if (%Parity[op] > 0) ");
|
||||
print("{\n%2p = ALLOC(sizeof *p);\n"
|
||||
"%2%Passert(p, PANIC(\"ALLOC returned NULL in %Pstate\\n\"));\n"
|
||||
"%2p->op = op;\n%2p->left = l;\n%2p->right = r;\n%2p->rule.%P%S = 0;\n", start);
|
||||
"%2p->op = op;\n%2p->left = l;\n%2p->right = r;\n%2p->rule.%P%S = 0;\n",
|
||||
start);
|
||||
for (i = 1; i <= ntnumber; i++)
|
||||
print("%2p->cost[%d] =\n", i);
|
||||
print("%3%d;\n%1}\n%1switch (op) {\n", maxcost);
|
||||
|
|
@ -675,18 +778,21 @@ static void emitstate(Term terms, Nonterm start, int ntnumber) {
|
|||
}
|
||||
|
||||
/* emitstring - emit array of rules and costs */
|
||||
static void emitstring(Rule rules) {
|
||||
static void emitstring(Rule rules)
|
||||
{
|
||||
Rule r;
|
||||
int k;
|
||||
|
||||
print("short %Pcost[][4] = {\n");
|
||||
for (k = 0, r = rules; r; r = r->link) {
|
||||
for (k = 0, r = rules; r; r = r->link)
|
||||
{
|
||||
for (; k < r->ern; k++)
|
||||
print("%1{ 0 },%1/* %d */\n", k);
|
||||
print("%1{ %d },%1/* %d = %R */\n", r->cost, k++, r);
|
||||
}
|
||||
print("};\n\nchar *%Pstring[] = {\n");
|
||||
for (k = 0, r = rules; r; r = r->link) {
|
||||
for (k = 0, r = rules; r; r = r->link)
|
||||
{
|
||||
for (; k < r->ern; k++)
|
||||
print("%1/* %d */%10,\n", k);
|
||||
print("%1/* %d */%1\"%R\",\n", k++, r);
|
||||
|
|
@ -695,10 +801,13 @@ static void emitstring(Rule rules) {
|
|||
}
|
||||
|
||||
/* emitstruct - emit the definition of the state structure */
|
||||
static void emitstruct(Nonterm nts, int ntnumber) {
|
||||
static void emitstruct(Nonterm nts, int ntnumber)
|
||||
{
|
||||
print("struct %Pstate {\n%1int op;\n%1struct %Pstate *left, *right;\n"
|
||||
"%1short cost[%d];\n%1struct {\n", ntnumber + 1);
|
||||
for ( ; nts; nts = nts->link) {
|
||||
"%1short cost[%d];\n%1struct {\n",
|
||||
ntnumber + 1);
|
||||
for (; nts; nts = nts->link)
|
||||
{
|
||||
int n = 1, m = nts->lhscount;
|
||||
while (m >>= 1)
|
||||
n++;
|
||||
|
|
@ -708,20 +817,24 @@ static void emitstruct(Nonterm nts, int ntnumber) {
|
|||
}
|
||||
|
||||
/* emitterms - emit terminal data structures */
|
||||
static void emitterms(Term terms) {
|
||||
static void emitterms(Term terms)
|
||||
{
|
||||
Term p;
|
||||
int k;
|
||||
|
||||
print("char %Parity[] = {\n");
|
||||
for (k = 0, p = terms; p; p = p->link) {
|
||||
for (k = 0, p = terms; p; p = p->link)
|
||||
{
|
||||
for (; k < p->esn; k++)
|
||||
print("%10,%1/* %d */\n", k);
|
||||
print("%1%d,%1/* %d=%S */\n", p->arity < 0 ? 0 : p->arity, k++, p);
|
||||
}
|
||||
print("};\n\n");
|
||||
if (Iflag) {
|
||||
if (Iflag)
|
||||
{
|
||||
print("char *%Popname[] = {\n");
|
||||
for (k = 0, p = terms; p; p = p->link) {
|
||||
for (k = 0, p = terms; p; p = p->link)
|
||||
{
|
||||
for (; k < p->esn; k++)
|
||||
print("%1/* %d */%10,\n", k);
|
||||
print("%1/* %d */%1\"%S\",\n", k++, p);
|
||||
|
|
@ -731,10 +844,12 @@ static void emitterms(Term terms) {
|
|||
}
|
||||
|
||||
/* emittest - emit clause for testing a match */
|
||||
static void emittest(Tree t, char *v, char *suffix) {
|
||||
static void emittest(Tree t, char* v, char* suffix)
|
||||
{
|
||||
Term p = t->op;
|
||||
|
||||
if (p->kind == TERM) {
|
||||
if (p->kind == TERM)
|
||||
{
|
||||
print("%3%s->op == %d%s/* %S */\n", v, p->esn,
|
||||
t->nterms > 1 ? " && " : suffix, p);
|
||||
if (t->left)
|
||||
|
|
|
|||
|
|
@ -5,10 +5,15 @@
|
|||
/* iburg.c: */
|
||||
extern void* alloc(int nbytes);
|
||||
|
||||
typedef enum { TERM=1, NONTERM } Kind;
|
||||
typedef enum
|
||||
{
|
||||
TERM = 1,
|
||||
NONTERM
|
||||
} Kind;
|
||||
typedef struct rule* Rule;
|
||||
typedef struct term* Term;
|
||||
struct term { /* terminals: */
|
||||
struct term
|
||||
{ /* terminals: */
|
||||
char* name; /* terminal name */
|
||||
Kind kind; /* TERM */
|
||||
int esn; /* external symbol number */
|
||||
|
|
@ -18,7 +23,8 @@ struct term { /* terminals: */
|
|||
};
|
||||
|
||||
typedef struct nonterm* Nonterm;
|
||||
struct nonterm { /* non-terminals: */
|
||||
struct nonterm
|
||||
{ /* non-terminals: */
|
||||
char* name; /* non-terminal name */
|
||||
Kind kind; /* NONTERM */
|
||||
int number; /* identifying number */
|
||||
|
|
@ -32,14 +38,16 @@ extern Nonterm nonterm(char *id);
|
|||
extern Term term(char* id, int esn);
|
||||
|
||||
typedef struct tree* Tree;
|
||||
struct tree { /* tree patterns: */
|
||||
struct tree
|
||||
{ /* tree patterns: */
|
||||
void* op; /* a terminal or non-terminal */
|
||||
Tree left, right; /* operands */
|
||||
int nterms; /* number of terminal nodes in this tree */
|
||||
};
|
||||
extern Tree tree(char* op, Tree left, Tree right);
|
||||
|
||||
struct rule { /* rules: */
|
||||
struct rule
|
||||
{ /* rules: */
|
||||
Nonterm lhs; /* lefthand side non-terminal */
|
||||
Tree pattern; /* rule pattern */
|
||||
int ern; /* external rule number */
|
||||
|
|
|
|||
Loading…
Reference in a new issue