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implement Command;
include "sys.m";
sys: Sys;
print, fprint, FD: import sys;
stderr: ref FD;
include "draw.m";
include "debug.m";
debug: Debug;
Prog, Module, Exp: import debug;
include "arg.m";
include "bufio.m";
bufio: Bufio;
Iobuf: import bufio;
include "env.m";
env: Env;
include "string.m";
str: String;
include "dis.m";
dism: Dis;
Command: module
{
init: fn(ctxt: ref Draw->Context, argv: list of string);
};
usage()
{
sys->fprint(stderr, "usage: stack [-v] pid\n");
raise "fail:usage";
}
badmodule(p: string)
{
sys->fprint(stderr, "stack: cannot load %s: %r\n", p);
raise "fail:bad module";
}
sbldirs: list of (string, string);
init(nil: ref Draw->Context, argv: list of string)
{
sys = load Sys Sys->PATH;
stderr = sys->fildes(2);
arg := load Arg Arg->PATH;
if (arg == nil)
badmodule(Arg->PATH);
bufio = load Bufio Bufio->PATH;
if (bufio == nil)
badmodule(Bufio->PATH);
debug = load Debug Debug->PATH;
if(debug == nil)
badmodule(Debug->PATH);
env = load Env Env->PATH;
if (env != nil) {
str = load String String->PATH;
if (str == nil)
badmodule(String->PATH);
}
bout := bufio->fopen(sys->fildes(1), Sys->OWRITE);
arg->init(argv);
verbose := 0;
while ((opt := arg->opt()) != 0) {
case opt {
'v' =>
verbose = 1;
'p' =>
dispath := arg->arg();
sblpath := arg->arg();
if (dispath == nil || sblpath == nil)
usage();
sbldirs = (addslash(dispath), addslash(sblpath)) :: sbldirs;
* =>
usage();
}
}
if (env != nil && (pathl := env->getenv("sblpath")) != nil) {
toks := str->unquoted(pathl);
for (; toks != nil && tl toks != nil; toks = tl tl toks)
sbldirs = (addslash(hd toks), addslash(hd tl toks)) :: sbldirs;
}
t: list of (string, string);
for (; sbldirs != nil; sbldirs = tl sbldirs)
t = hd sbldirs :: t;
sbldirs = t;
argv = arg->argv();
if(argv == nil)
usage();
debug->init();
(p, err) := debug->prog(int hd argv);
if(err != nil){
fprint(stderr, "stack: %s\n", err);
return;
}
stk: array of ref Exp;
(stk, err) = p.stack();
if(err != nil){
fprint(stderr, "stack: %s\n", err);
return;
}
for(i := 0; i < len stk; i++){
stdsym(stk[i].m);
stk[i].m.stdsym();
stk[i].findsym();
bout.puts(stk[i].name + "(");
vs := stk[i].expand();
if(verbose && vs != nil){
for(j := 0; j < len vs; j++){
if(vs[j].name == "args"){
d := vs[j].expand();
s := "";
for(j = 0; j < len d; j++) {
bout.puts(sys->sprint("%s%s=%s", s, d[j].name, d[j].val().t0));
s = ", ";
}
break;
}
}
}
bout.puts(sys->sprint(") %s\n", stk[i].srcstr()));
if(verbose && vs != nil){
for(j := 0; j < len vs; j++){
if(vs[j].name == "locals"){
d := vs[j].expand();
for(j = 0; j < len d; j++)
bout.puts("\t" + d[j].name + "=" + d[j].val().t0 + "\n");
break;
}
}
}
}
bout.flush();
}
stdsym(m: ref Module)
{
dis := m.dis();
if(dism == nil){
dism = load Dis Dis->PATH;
if(dism != nil)
dism->init();
}
if(dism != nil && (sp := dism->src(dis)) != nil){
sp = sp[0: len sp - 1] + "sbl";
(sym, nil) := debug->sym(sp);
if (sym != nil) {
m.addsym(sym);
return;
}
}
for (sbl := sbldirs; sbl != nil; sbl = tl sbl) {
(dispath, sblpath) := hd sbl;
if (len dis > len dispath && dis[0:len dispath] == dispath) {
sblpath = sblpath + dis[len dispath:];
if (len sblpath > 4 && sblpath[len sblpath - 4:] == ".dis")
sblpath = sblpath[0:len sblpath - 4] + ".sbl";
(sym, nil) := debug->sym(sblpath);
if (sym != nil) {
m.addsym(sym);
return;
}
}
}
}
addslash(p: string): string
{
if (p != nil && p[len p - 1] != '/')
p[len p] = '/';
return p;
}
|
