quakeforge/tools/qfcc/source/dot_expr.c
Bill Currie 37f08f9d4f [qfcc] Build the Ruamoko function parameters
The parameter defs are allocated from the parameter space using a
minimum alignment of 4, and varargs functions get a va_list struct in
place of the ...

An "args" expression is unconditionally injected into the call arguments
list at the place where ... is in the list, with arguments passed
through ... coming after the ...

Arguments get through to functions now, but there's problems with taking
the address of local variables: currently done using constant pointer
defs, which can't work for the base register addressing used in Ruamoko
progs.

With the update to test-bi's printf (and a hack to qfcc for lea),
triangle.r actually works, printing the expected results (but -1 instead
of 1 for equality, though that too is actually expected). qfcc will take
a bit longer because it seems there are some design issues in address
expressions (ambiguity, and a few other things) that have pretty much
always been there.
2022-01-24 23:44:48 +09:00

748 lines
21 KiB
C

/*
dot_expr.c
"emit" expressions to dot (graphvis).
Copyright (C) 2011 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2011/01/20
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include <inttypes.h>
#include <QF/dstring.h>
#include <QF/mathlib.h>
#include <QF/quakeio.h>
#include <QF/va.h>
#include "qfalloca.h"
#include "tools/qfcc/include/expr.h"
#include "tools/qfcc/include/method.h"
#include "tools/qfcc/include/symtab.h"
#include "tools/qfcc/include/type.h"
#include "tools/qfcc/include/strpool.h"
#include "tools/qfcc/source/qc-parse.h"
#define EX_EXPR(expr) #expr,
const char *expr_names[] =
{
#include "tools/qfcc/include/expr_names.h"
0
};
#undef EX_EXPR
const char *
get_op_string (int op)
{
switch (op) {
case OR: return "||";
case AND: return "&&";
case EQ: return "==";
case NE: return "!=";
case LE: return "<=";
case GE: return ">=";
case LT: return "<";
case GT: return ">";
case '+': return "+";
case '-': return "-";
case '*': return "*";
case '/': return "/";
case '%': return "%";
case MOD: return "%%";
case '&': return "&";
case '|': return "|";
case '^': return "^";
case '~': return "~";
case '!': return "!";
case SHL: return "<<";
case SHR: return ">>";
case '.': return ".";
case 'C': return "<cast>";
default:
return "unknown";
}
}
typedef void (*print_f) (dstring_t *dstr, expr_t *, int, int, expr_t *);
static void _print_expr (dstring_t *dstr, expr_t *e, int level, int id,
expr_t *next);
static void
print_error (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"(error)\\n%d\"];\n", indent, "", e,
e->line);
}
static void
print_state (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
_print_expr (dstr, e->e.state.frame, level, id, next);
_print_expr (dstr, e->e.state.think, level, id, next);
if (e->e.state.step)
_print_expr (dstr, e->e.state.step, level, id, next);
dasprintf (dstr, "%*se_%p:f -> \"e_%p\";\n", indent, "", e,
e->e.state.frame);
dasprintf (dstr, "%*se_%p:t -> \"e_%p\";\n", indent, "", e,
e->e.state.think);
if (e->e.state.step)
dasprintf (dstr, "%*se_%p:s -> e_%p;\n", indent, "", e,
e->e.state.step);
dasprintf (dstr,
"%*se_%p [label=\"<f>state|<t>think|<s>step\",shape=record];\n",
indent, "", e);
}
static void
print_bool (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
int i, count;
int tl_count = 0, fl_count = 0;
ex_bool_t *bool = &e->e.bool;
dasprintf (dstr, "%*se_%p [shape=none,label=<\n", indent, "", e);
dasprintf (dstr, "%*s<table border=\"0\" cellborder=\"1\" "
"cellspacing=\"0\">\n",
indent + 2, "");
dasprintf (dstr, "%*s<tr><td colspan=\"2\">&lt;bool&gt;(%d)</td></tr>\n",
indent + 4, "", e->line);
dasprintf (dstr, "%*s<tr><td>true</td><td>false</td></tr>\n",
indent + 4, "");
if (bool->true_list)
tl_count = bool->true_list->size;
if (bool->false_list)
fl_count = bool->false_list->size;
count = min (tl_count, fl_count);
for (i = 0; i < count; i++)
dasprintf (dstr, "%*s<tr><td port=\"t%d\">t</td>"
"<td port=\"f%d\">f</td></tr>\n", indent, "", i, i);
for ( ; i < tl_count; i++)
dasprintf (dstr, "%*s<tr><td port=\"t%d\">t</td>%s</tr>\n",
indent, "", i,
i == count ? va (0, "<td rowspan=\"%d\"></td>",
bool->true_list->size - count)
: "");
for ( ; i < fl_count; i++)
dasprintf (dstr, "%*s<tr>%s<td port=\"f%d\">f</td></tr>\n",
indent, "",
i == count ? va (0, "<td rowspan=\"%d\"></td>",
bool->false_list->size - count)
: "",
i);
dasprintf (dstr, "%*s</table>\n", indent + 2, "");
dasprintf (dstr, "%*s>];\n", indent, "");
if (e->next)
next = e->next;
_print_expr (dstr, e->e.bool.e, level, id, next);
for (i = 0; i < tl_count; i++)
dasprintf (dstr, "%*se_%p:t%d -> e_%p;\n", indent, "", e, i,
bool->true_list->e[i]);
for (i = 0; i < fl_count; i++)
dasprintf (dstr, "%*se_%p:f%d -> e_%p;\n", indent, "", e, i,
bool->false_list->e[i]);
dasprintf (dstr, "%*se_%p -> e_%p;\n", indent, "", e, e->e.bool.e);
}
static void
print_label (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
if (e->next)
next = e->next;
if (next)
dasprintf (dstr, "%*se_%p -> e_%p [constraint=true,style=dashed];\n",
indent, "", e, next);
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
e->e.label.name, e->line);
}
static void
print_labelref (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
if (e->next)
next = e->next;
if (next)
dasprintf (dstr, "%*se_%p -> e_%p [constraint=true,style=dashed];\n",
indent, "", e, e->next);
dasprintf (dstr, "%*se_%p [label=\"&%s\\n%d\"];\n", indent, "", e,
e->e.label.name, e->line);
}
static void
print_block (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
int i;
expr_t *se;
dasprintf (dstr, "%*se_%p [shape=none,label=<\n", indent, "", e);
dasprintf (dstr, "%*s<table border=\"0\" cellborder=\"1\" "
"cellspacing=\"0\">\n", indent + 2, "");
dasprintf (dstr, "%*s<tr><td colspan=\"2\">&lt;block&gt;(%d)%s</td>"
"</tr>\n", indent + 4, "", e->line,
e->e.block.is_call ? "c" : "");
if (e->e.block.result)
dasprintf (dstr, "%*s<tr><td colspan=\"2\" port=\"result\">=</td>"
"</tr>\n", indent + 4, "");
for (se = e->e.block.head, i = 0; se; se = se->next, i++)
dasprintf (dstr, "%*s<tr><td>%d</td><td port=\"b%d\">%s</td></tr>\n",
indent + 4, "", se->line, i, expr_names[se->type]);
dasprintf (dstr, "%*s</table>\n", indent + 2, "");
dasprintf (dstr, "%*s>];\n", indent, "");
if (e->e.block.result) {
_print_expr (dstr, e->e.block.result, level + 1, id, next);
dasprintf (dstr, "%*se_%p:result -> e_%p;\n", indent, "", e,
e->e.block.result);
}
if (e->next)
next = e->next;
for (se = e->e.block.head, i = 0; se; se = se->next, i++) {
_print_expr (dstr, se, level + 1, id, next);
dasprintf (dstr, "%*se_%p:b%d -> e_%p;\n", indent, "", e,
i, se);
}
}
static void
print_subexpr (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
_print_expr (dstr, e->e.expr.e1, level, id, next);
_print_expr (dstr, e->e.expr.e2, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"l\"];\n", indent, "", e,
e->e.expr.e1);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"r\"];\n", indent, "", e,
e->e.expr.e2);
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
get_op_string (e->e.expr.op), e->line);
}
static void
print_alias (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
_print_expr (dstr, e->e.alias.expr, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"a\"];\n", indent, "", e,
e->e.alias.expr);
if (e->e.alias.offset) {
_print_expr (dstr, e->e.alias.offset, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"o\"];\n", indent, "", e,
e->e.alias.offset);
}
dstring_t *typestr = dstring_newstr();
print_type_str (typestr, e->e.alias.type);
dasprintf (dstr, "%*se_%p [label=\"%s (%s)\\n%d\"];\n", indent, "", e,
"<alias>", typestr->str, e->line);
dstring_delete (typestr);
}
static void
print_address (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
_print_expr (dstr, e->e.address.lvalue, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"&\"];\n", indent, "", e,
e->e.address.lvalue);
if (e->e.address.offset) {
_print_expr (dstr, e->e.address.offset, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"+\"];\n", indent, "", e,
e->e.address.offset);
}
dstring_t *typestr = dstring_newstr();
print_type_str (typestr, e->e.address.type);
dasprintf (dstr, "%*se_%p [label=\"%s (%s)\\n%d\"];\n", indent, "", e,
"&", typestr->str, e->line);
dstring_delete (typestr);
}
static void
print_assign (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
_print_expr (dstr, e->e.assign.dst, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"lval\"];\n", indent, "", e,
e->e.assign.dst);
_print_expr (dstr, e->e.assign.src, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"rval\"];\n", indent, "", e,
e->e.assign.src);
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
"=", e->line);
}
static void
print_conditional (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
static const char *condition[] = {
"ifz", "ifb", "ifa", 0, "ifnz", "ifnb", "ifna", 0
};
_print_expr (dstr, e->e.branch.test, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"t\"];\n", indent, "", e,
e->e.branch.test);
dasprintf (dstr, "%*se_%p -> \"e_%p\" [label=\"g\"];\n", indent, "", e,
e->e.branch.target);
if (e->next) {
next = e->next;
}
if (next) {
dasprintf (dstr, "%*se_%p -> e_%p [constraint=true,"
"style=dashed];\n", indent, "", e, next);
}
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
condition [e->e.branch.type], e->line);
}
static void
print_jump (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
_print_expr (dstr, e->e.branch.target, level, id, next);
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
"jump", e->line);
}
static void
print_call (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
expr_t *p;
int i, count;
expr_t **args;
for (count = 0, p = e->e.branch.args; p; p = p->next)
count++;
args = alloca (count * sizeof (expr_t *));
for (i = 0, p = e->e.branch.args; p; p = p->next, i++)
args[count - 1 - i] = p;
_print_expr (dstr, e->e.branch.target, level, id, next);
dasprintf (dstr, "%*se_%p [label=\"<c>call", indent, "", e);
for (i = 0; i < count; i++)
dasprintf (dstr, "|<p%d>p%d", i, i);
dasprintf (dstr, "\",shape=record];\n");
for (i = 0; i < count; i++) {
_print_expr (dstr, args[i], level + 1, id, next);
dasprintf (dstr, "%*se_%p:p%d -> e_%p;\n", indent + 2, "", e, i,
args[i]);
}
dasprintf (dstr, "%*se_%p:c -> e_%p;\n", indent, "", e,
e->e.branch.target);
}
static void
print_branch (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
switch (e->e.branch.type) {
case pr_branch_eq:
case pr_branch_lt:
case pr_branch_gt:
case pr_branch_ne:
case pr_branch_ge:
case pr_branch_le:
print_conditional (dstr, e, level, id, next);
break;
case pr_branch_jump:
print_jump (dstr, e, level, id, next);
break;
case pr_branch_call:
print_call (dstr, e, level, id, next);
break;
}
}
static void
print_return (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
if (e->e.retrn.ret_val) {
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e,
e->e.retrn.ret_val);
}
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
"return", e->line);
}
static void
print_uexpr (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, e->e.expr.e1);
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
get_op_string (e->e.expr.op), e->line);
}
static void
print_def (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"d %s\\n%d\"];\n", indent, "", e,
e->e.def->name, e->line);
}
static void
print_symbol (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e,
e->e.symbol->name, e->line);
}
static void
print_temp (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"tmp_%p\\n%d\"];\n", indent, "", e, e,
e->line);
}
static void
print_vector (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
if (is_vector(e->e.vector.type)) {
expr_t *x = e->e.vector.list;
expr_t *y = x->next;
expr_t *z = y->next;
_print_expr (dstr, x, level, id, next);
_print_expr (dstr, y, level, id, next);
_print_expr (dstr, z, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, x);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, y);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, z);
}
if (is_quaternion(e->e.vector.type)) {
if (e->e.vector.list->next->next) {
expr_t *x = e->e.vector.list;
expr_t *y = x->next;
expr_t *z = y->next;
expr_t *w = z->next;
_print_expr (dstr, x, level, id, next);
_print_expr (dstr, y, level, id, next);
_print_expr (dstr, z, level, id, next);
_print_expr (dstr, w, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, x);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, y);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, z);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, w);
} else {
expr_t *v = e->e.vector.list;
expr_t *s = v->next;
_print_expr (dstr, v, level, id, next);
_print_expr (dstr, s, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, v);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, s);
}
}
dasprintf (dstr, "%*se_%p [label=\"vector %d\"];\n", indent, "", e,
e->line);
}
static void
print_selector (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"%s\"];\n", indent, "", e,
e->e.selector.sel->name);
}
static void
print_nil (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"nil\\n%d\"];\n", indent, "", e,
e->line);
}
static void
print_value (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
type_t *type;
const char *label = "?!?";
static dstring_t *type_str;
if (!type_str) {
type_str = dstring_newstr ();
}
switch (e->e.value->lltype) {
case ev_string:
label = va (0, "\\\"%s\\\"",
quote_string (e->e.value->v.string_val));
break;
case ev_double:
label = va (0, "f %g", e->e.value->v.double_val);
break;
case ev_float:
label = va (0, "f %g", e->e.value->v.float_val);
break;
case ev_vector:
label = va (0, "'%g %g %g'",
e->e.value->v.vector_val[0],
e->e.value->v.vector_val[1],
e->e.value->v.vector_val[2]);
break;
case ev_quaternion:
label = va (0, "'%g %g %g %g'",
e->e.value->v.quaternion_val[0],
e->e.value->v.quaternion_val[1],
e->e.value->v.quaternion_val[2],
e->e.value->v.quaternion_val[3]);
break;
case ev_ptr:
type = e->e.value->v.pointer.type;
dstring_clearstr(type_str);
if (type) {
print_type_str (type_str, type);
}
if (e->e.value->v.pointer.def)
label = va (0, "(*%s)[%d]<%s>",
type ? type_str->str : "???",
e->e.value->v.pointer.val,
e->e.value->v.pointer.def->name);
else
label = va (0, "(*%s)[%d]",
type ? type_str->str : "???",
e->e.value->v.pointer.val);
break;
case ev_field:
if (e->e.value->v.pointer.def) {
int offset = e->e.value->v.pointer.val;
offset += e->e.value->v.pointer.def->offset;
label = va (0, "field %d", offset);
} else {
label = va (0, "field %d", e->e.value->v.pointer.val);
}
break;
case ev_entity:
label = va (0, "ent %d", e->e.value->v.int_val);
break;
case ev_func:
label = va (0, "func %d", e->e.value->v.int_val);
break;
case ev_int:
label = va (0, "i %d", e->e.value->v.int_val);
break;
case ev_uint:
label = va (0, "u %u", e->e.value->v.uint_val);
break;
case ev_long:
label = va (0, "i %"PRIi64, e->e.value->v.long_val);
break;
case ev_ulong:
label = va (0, "u %"PRIu64, e->e.value->v.ulong_val);
break;
case ev_short:
label = va (0, "s %d", e->e.value->v.short_val);
break;
case ev_ushort:
label = va (0, "us %d", e->e.value->v.ushort_val);
break;
case ev_void:
label = "<void>";
break;
case ev_invalid:
label = "<invalid>";
break;
case ev_type_count:
label = "<type_count>";
break;
}
dasprintf (dstr, "%*se_%p [label=\"%s\\n%d\"];\n", indent, "", e, label,
e->line);
}
static void
print_compound (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"compound init\"];\n", indent, "", e);
}
static void
print_memset (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
expr_t *dst = e->e.memset.dst;
expr_t *val = e->e.memset.val;
expr_t *count = e->e.memset.count;
_print_expr (dstr, dst, level, id, next);
_print_expr (dstr, val, level, id, next);
_print_expr (dstr, count, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, dst);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, val);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, count);
dasprintf (dstr, "%*se_%p [label=\"memset\"];\n", indent, "", e);
}
static void
print_adjstk (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"adjstk %d:%d\\n%d\"];\n", indent, "", e,
e->e.adjstk.mode, e->e.adjstk.offset, e->line);
}
static void
print_with (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
expr_t *with = e->e.with.with;
_print_expr (dstr, with, level, id, next);
dasprintf (dstr, "%*se_%p -> \"e_%p\";\n", indent, "", e, with);
dasprintf (dstr, "%*se_%p [label=\"with %d:%d\\n%d\"];\n", indent, "", e,
e->e.with.mode, e->e.with.reg, e->line);
}
static void
print_args (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
int indent = level * 2 + 2;
dasprintf (dstr, "%*se_%p [label=\"...\\n%d\"];\n", indent, "", e,
e->line);
}
static void
_print_expr (dstring_t *dstr, expr_t *e, int level, int id, expr_t *next)
{
static print_f print_funcs[ex_count] = {
[ex_error] = print_error,
[ex_state] = print_state,
[ex_bool] = print_bool,
[ex_label] = print_label,
[ex_labelref] = print_labelref,
[ex_block] = print_block,
[ex_expr] = print_subexpr,
[ex_uexpr] = print_uexpr,
[ex_def] = print_def,
[ex_symbol] = print_symbol,
[ex_temp] = print_temp,
[ex_vector] = print_vector,
[ex_selector] = print_selector,
[ex_nil] = print_nil,
[ex_value] = print_value,
[ex_compound] = print_compound,
[ex_memset] = print_memset,
[ex_alias] = print_alias,
[ex_address] = print_address,
[ex_assign] = print_assign,
[ex_branch] = print_branch,
[ex_return] = print_return,
[ex_adjstk] = print_adjstk,
[ex_with] = print_with,
[ex_args] = print_args,
};
int indent = level * 2 + 2;
if (!e) {
dasprintf (dstr, "%*s\"e_%p\" [label=\"(null)\"];\n", indent, "", e);
return;
}
if (e->printid == id) // already printed this expression
return;
e->printid = id;
if ((int) e->type < 0 || e->type >= ex_count || !print_funcs[e->type]) {
const char *type = va (0, "%d", e->type);
if (e->type >= 0 && e->type < ex_count) {
type = expr_names[e->type];
}
dasprintf (dstr, "%*se_%p [label=\"(bad expr type: %s)\\n%d\"];\n",
indent, "", e, type, e->line);
return;
}
print_funcs[e->type] (dstr, e, level, id, next);
}
void
dump_dot_expr (void *_e, const char *filename)
{
static int id = 0;
dstring_t *dstr = dstring_newstr ();
expr_t *e = (expr_t *) _e;
dasprintf (dstr, "digraph expr_%p {\n", e);
dasprintf (dstr, " graph [label=\"%s\"];\n", quote_string (filename));
dasprintf (dstr, " layout=dot; rankdir=TB; compound=true;\n");
_print_expr (dstr, e, 0, ++id, 0);
dasprintf (dstr, "}\n");
if (filename) {
QFile *file;
file = Qopen (filename, "wt");
Qwrite (file, dstr->str, dstr->size - 1);
Qclose (file);
} else {
fputs (dstr->str, stdout);
}
dstring_delete (dstr);
}
void
print_expr (expr_t *e)
{
dump_dot_expr (e, 0);
}