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- /* $Header$ */
- #include <stdio.h>
- #include <varargs.h>
- #include <assert.h>
- #include <alloc.h>
- #include <out.h>
- #include "operator.h"
- #include "position.h"
- #include "file.h"
- #include "idf.h"
- #include "tree.h"
- #include "scope.h"
- #include "symbol.h"
- #include "langdep.h"
- #include "type.h"
- #include "expr.h"
- #include "misc.h"
- extern FILE *db_out;
- t_lineno currline;
- t_lineno listline;
- extern char *strrindex();
- extern int interrupted;
- /*VARARGS1*/
- p_tree
- mknode(va_alist)
- va_dcl
- {
- va_list ap;
- register p_tree p = new_tree();
- va_start(ap);
- {
- register int i, na;
- p->t_oper = va_arg(ap, int);
- switch(p->t_oper) {
- case OP_NAME:
- case OP_HELP:
- p->t_idf = va_arg(ap, struct idf *);
- p->t_str = va_arg(ap, char *);
- break;
- case OP_STRING:
- p->t_sval = va_arg(ap, char *);
- break;
- case OP_REAL:
- p->t_fval = va_arg(ap, double);
- break;
- case OP_AT:
- p->t_lino = va_arg(ap, long);
- p->t_filename = va_arg(ap, char *);
- break;
- case OP_INTEGER:
- p->t_ival = va_arg(ap, long);
- break;
- default:
- na = nargs(p->t_oper);
- assert(na <= MAXARGS);
- for (i = 0; i < na; i++) {
- p->t_args[i] = va_arg(ap, p_tree);
- }
- break;
- }
- }
- va_end(ap);
- return p;
- }
- freenode(p)
- register p_tree p;
- {
- register int na, i;
- if (! p) return;
- na = nargs(p->t_oper);
- assert(na <= MAXARGS);
- for (i = 0; i < na; i++) {
- freenode(p->t_args[i]);
- }
- free_tree(p);
- }
- t_addr
- get_addr_from_node(p)
- p_tree p;
- {
- t_addr a = ILL_ADDR;
- register p_symbol sym;
- if (! p) return NO_ADDR;
- if (p->t_address != 0) return p->t_address;
- switch(p->t_oper) {
- case OP_AT:
- if (! p->t_filename &&
- (! listfile || ! (p->t_filename = listfile->sy_idf->id_text))) {
- error("no current file");
- break;
- }
- a = get_addr_from_position(&(p->t_pos));
- if (a == ILL_ADDR) {
- error("could not determine address of \"%s\":%d",
- p->t_filename, p->t_lino);
- break;
- }
- p->t_address = a;
- break;
-
- case OP_IN:
- a = get_addr_from_node(p->t_args[0]);
- if (p->t_args[1]) {
- p_scope sc;
- a = get_addr_from_node(p->t_args[1]);
- sc = base_scope(get_scope_from_addr(a));
- sym = identify(p->t_args[0], FUNCTION|PROC|MODULE);
- if (! sym->sy_name.nm_scope ||
- ! sym->sy_name.nm_scope->sc_bp_opp) {
- error("could not determine address of \"%s\"", p->t_str);
- a = ILL_ADDR;
- break;
- }
- if (sc->sc_definedby != sym) {
- error("inconsistent address");
- a = ILL_ADDR;
- break;
- }
- }
- p->t_address = a;
- break;
- case OP_NAME:
- case OP_SELECT:
- sym = identify(p, FUNCTION|PROC|MODULE);
- if (! sym) {
- break;
- }
- if (! sym->sy_name.nm_scope || ! sym->sy_name.nm_scope->sc_bp_opp) {
- error("could not determine address of \"%s\"", p->t_str);
- break;
- }
- a = sym->sy_name.nm_scope->sc_bp_opp;
- break;
- default:
- assert(0);
- }
- return a;
- }
- static int ommit_commas = 0;
- print_node(f, p, top_level)
- register p_tree p;
- register FILE *f;
- {
- if (!p) return;
- switch(p->t_oper) {
- case OP_LOG:
- fputs("log ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_PRCOMM:
- fputs("rerun ?", f);
- break;
- case OP_RUN:
- fputs("run ", f);
- ommit_commas = 1;
- print_node(f, p->t_args[0], 0);
- ommit_commas = 0;
- break;
- case OP_LIST:
- fputs("list ", f);
- if (p->t_args[0]) {
- print_node(f, p->t_args[0], 0);
- if (p->t_args[1]) {
- if (p->t_args[1]->t_ival >= 0) {
- fputs(", ", f);
- print_node(f, p->t_args[1], 0);
- }
- else {
- if (p->t_args[1]->t_ival < -100000000) {
- fputs("-", f);
- }
- else print_node(f, p->t_args[1], 0);
- }
- }
- }
- break;
- case OP_PRINT:
- fputs("print ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_SOURCE:
- fputs("source ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_ENABLE:
- fputs("enable ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_DISABLE:
- fputs("disable ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_DISPLAY:
- fputs("display ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_LINK:
- print_node(f, p->t_args[0], 0);
- if (! ommit_commas) fputs(", ", f);
- else putc(' ', f);
- print_node(f, p->t_args[1], 0);
- break;
- case OP_FILE:
- fputs("file ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_FRAME:
- fputs("frame ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_UP:
- fputs("frame +", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_DOWN:
- fputs("frame -", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_SET:
- fputs("set ", f);
- print_node(f, p->t_args[0], 0);
- fputs(" to ", f);
- print_node(f, p->t_args[1], 0);
- break;
- case OP_FIND:
- fputs("find ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_WHICH:
- fputs("which ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_DELETE:
- fputs("delete ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_REGS:
- fputs("regs ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_NEXT:
- fputs("next ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_STEP:
- fputs("step ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_STATUS:
- fputs("status", f);
- break;
- case OP_DUMP:
- fputs("dump ", f);
- (void) print_position(p->t_address, 1);
- break;
- case OP_RESTORE:
- fputs("restore ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_WHERE:
- fputs("where ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_HELP:
- fputs("help ", f);
- print_node(f, p->t_args[0], 0);
- break;
- case OP_CONT:
- fputs("cont", f);
- if (p->t_args[0]) {
- fprintf(f, " %ld", p->t_args[0]->t_ival);
- }
- if (p->t_args[1]) {
- fputs(" ", f);
- print_node(f, p->t_args[1], 0);
- }
- break;
- case OP_WHEN:
- fputs("when ", f);
- if (p->t_address != NO_ADDR) {
- (void) print_position(p->t_address, 1);
- }
- else print_node(f, p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(" if ", f);
- print_node(f, p->t_args[1], 0);
- }
- p = p->t_args[2];
- fputs(" { ", f);
- while (p && p->t_oper == OP_LINK) {
- print_node(f, p->t_args[0], 0);
- fputs("; ", f);
- p = p->t_args[1];
- }
- print_node(f, p, 0);
- fputs(" }", f);
- break;
- case OP_STOP:
- fputs("stop ", f);
- if (p->t_address != NO_ADDR) {
- (void) print_position(p->t_address, 1);
- }
- else print_node(f, p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(" if ", f);
- print_node(f, p->t_args[1], 0);
- }
- break;
- case OP_TRACE:
- fputs("trace ", f);
- if (p->t_args[2]) {
- fputs("on ", f);
- print_node(f, p->t_args[2], 0);
- fputs(" ", f);
- }
- if (p->t_address != NO_ADDR) {
- (void) print_position(p->t_address, 1);
- }
- else print_node(f, p->t_args[0], 0);
- if (p->t_args[1]) {
- fputs(" if ", f);
- print_node(f, p->t_args[1], 0);
- }
- break;
- case OP_AT:
- fprintf(f, "at \"%s\":%d", p->t_filename, (int) p->t_lino);
- break;
- case OP_IN:
- fputs("in ", f);
- print_node(f, p->t_args[0], 0);
- fputs(" ", f);
- print_node(f, p->t_args[1], 0);
- break;
- case OP_SELECT:
- print_node(f, p->t_args[0], 0);
- fputs("`", f);
- print_node(f, p->t_args[1], 0);
- break;
- case OP_OUTPUT:
- fprintf(f, "> %s ", p->t_str);
- break;
- case OP_INPUT:
- fprintf(f, "< %s ", p->t_str);
- break;
- case OP_NAME:
- fputs(p->t_str, f);
- break;
- case OP_INTEGER:
- fprintf(f, currlang->decint_fmt, p->t_ival);
- break;
- case OP_STRING:
- (*currlang->printstring)(f, p->t_sval, strlen(p->t_sval));
- break;
- case OP_REAL:
- fprintf(f, currlang->real_fmt, p->t_fval);
- break;
- case OP_FORMAT:
- print_node(f, p->t_args[0], 0);
- fputs("\\", f);
- print_node(f, p->t_args[1], 0);
- break;
- case OP_UNOP:
- case OP_BINOP:
- (*currlang->printop)(f, p);
- break;
- default:
- assert(0);
- }
- if (top_level) fputs("\n", f);
- }
- int
- repeatable(com)
- p_tree com;
- {
- switch(com->t_oper) {
- case OP_CONT:
- com->t_args[0]->t_ival = 1;
- freenode(com->t_args[1]);
- com->t_args[1] = 0;
- return 1;
- case OP_NEXT:
- case OP_STEP:
- freenode(com->t_args[0]);
- com->t_args[0] = 0;
- return 1;
- case OP_LIST:
- freenode(com->t_args[0]);
- com->t_args[0] = 0;
- freenode(com->t_args[1]);
- com->t_args[1] = 0;
- return 1;
- }
- return 0;
- }
- int
- in_status(com)
- p_tree com;
- {
- switch(com->t_oper) {
- case OP_PRCOMM:
- /* not really in status but may not be removed */
- case OP_STOP:
- case OP_WHEN:
- case OP_TRACE:
- case OP_DUMP:
- case OP_DISPLAY:
- return 1;
- }
- return 0;
- }
- eval(p)
- p_tree p;
- {
- if (p && operators[p->t_oper].op_fun) (*operators[p->t_oper].op_fun)(p);
- }
- newfile(id)
- register struct idf *id;
- {
- register p_symbol sym = Lookup(id, PervasiveScope, FILESYM);
- if (listfile != sym) listline = 1;
- listfile = sym;
- if (! listfile) {
- listline = 1;
- listfile = add_file(id->id_text);
- listfile->sy_file->f_scope = FileScope;
- }
- find_language(strrindex(id->id_text, '.'));
- }
- int in_wheninvoked;
- perform(p, a)
- register p_tree p;
- t_addr a;
- {
- switch(p->t_oper) {
- case OP_WHEN:
- if (p->t_args[1] && ! eval_cond(p->t_args[1])) break;
- p = p->t_args[2];
- in_wheninvoked++;
- while (p && p->t_oper == OP_LINK) {
- if (interrupted) return;
- if (p->t_args[0]) eval(p->t_args[0]);
- p = p->t_args[1];
- }
- if (interrupted) return;
- if (p) eval(p);
- in_wheninvoked--;
- break;
- case OP_TRACE:
- if (p->t_args[0] && p->t_args[0]->t_oper == OP_IN) {
- register p_scope sc = base_scope(CurrentScope);
-
- if (sc != get_scope_from_addr(p->t_args[0]->t_address)) {
- break;
- }
- }
- if (interrupted) return;
- if (p->t_args[1] && ! eval_cond(p->t_args[1])) break;
- list_position(get_position_from_addr(a));
- if (p->t_args[2]) do_print(p->t_args[2]);
- break;
- default:
- assert(0);
- }
- }
- list_position(pos)
- p_position pos;
- {
- newfile(str2idf(pos->filename, 1));
- currfile = listfile;
- currline = pos->lineno;
- lines(currfile->sy_file, (int)currline, (int)1);
- listline = 0;
- }
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