mirror of https://github.com/swig/swig
415 lines
9.5 KiB
C++
415 lines
9.5 KiB
C++
/* -----------------------------------------------------------------------------
|
|
* s-exp.cxx
|
|
*
|
|
* A parse tree represented as Lisp s-expressions.
|
|
*
|
|
* Author(s) : Matthias Koeppe (mkoeppe@mail.math.uni-magdeburg.de)
|
|
*
|
|
* Copyright (C) 2002. The University of Chicago
|
|
* See the file LICENSE for information on usage and redistribution.
|
|
* ----------------------------------------------------------------------------- */
|
|
|
|
/* Derived from xml.cxx 1.1.2.2 */
|
|
|
|
char cvsroot_s_exp_cxx[] = "$Header$";
|
|
static const char *usage = "\
|
|
S-Exp Options (available with -sexp)\n\
|
|
-typemaplang <lang> - Typemap language\n\n";
|
|
|
|
#include "swigmod.h"
|
|
#include "dohint.h"
|
|
|
|
//static Node *view_top = 0;
|
|
static File *out = 0;
|
|
|
|
class Sexp : public Language {
|
|
public:
|
|
int indent_level;
|
|
Sexp() : indent_level( 0 ) {}
|
|
virtual ~Sexp() {}
|
|
virtual void main(int argc, char *argv[]) {
|
|
SWIG_typemap_lang("sexp");
|
|
for( int iX = 0; iX < argc; iX++ )
|
|
{
|
|
if( strcmp( argv[iX], "-typemaplang" ) == 0 )
|
|
{
|
|
Swig_mark_arg (iX);
|
|
iX++;
|
|
SWIG_typemap_lang(argv[iX]);
|
|
Swig_mark_arg (iX);
|
|
continue;
|
|
}
|
|
if( strcmp( argv[iX], "-help" ) == 0 )
|
|
{
|
|
fputs( usage, stdout );
|
|
}
|
|
}
|
|
|
|
// Add a symbol to the parser for conditional compilation
|
|
Preprocessor_define("SWIGSEXP 1",0);
|
|
}
|
|
|
|
DOHHash *print_circle_hash;
|
|
int print_circle_count;
|
|
int hanging_parens;
|
|
bool need_whitespace;
|
|
bool need_newline;
|
|
|
|
/* Top of the parse tree */
|
|
virtual int top(Node *n)
|
|
{
|
|
if( out == 0 )
|
|
{
|
|
String *outfile = Getattr(n,"outfile");
|
|
Replaceall(outfile,"_wrap.cxx", ".lisp");
|
|
Replaceall(outfile,"_wrap.c", ".lisp");
|
|
out = NewFile(outfile,"w");
|
|
if (!out)
|
|
{
|
|
Printf(stderr,"*** Can't open '%s'\n", outfile);
|
|
SWIG_exit(EXIT_FAILURE);
|
|
}
|
|
}
|
|
Language::top(n);
|
|
Printf( out, ";;; Lisp parse tree produced by SWIG\n" );
|
|
print_circle_hash = DohNewHash();
|
|
print_circle_count = 0;
|
|
hanging_parens = 0;
|
|
need_whitespace = 0;
|
|
need_newline = 0;
|
|
Sexp_print_node(n);
|
|
flush_parens();
|
|
return SWIG_OK;
|
|
}
|
|
|
|
void print_indent()
|
|
{
|
|
int i;
|
|
for (i = 0; i < indent_level; i++)
|
|
{
|
|
Printf(out, " ");
|
|
}
|
|
}
|
|
|
|
void open_paren(const String *oper)
|
|
{
|
|
flush_parens();
|
|
Printf(out, "(");
|
|
if (oper) Printf(out, "%s ", oper);
|
|
indent_level += 2;
|
|
}
|
|
|
|
void close_paren(bool neednewline = false)
|
|
{
|
|
hanging_parens++;
|
|
if (neednewline)
|
|
print_lazy_whitespace();
|
|
indent_level -= 2;
|
|
}
|
|
|
|
void flush_parens()
|
|
{
|
|
int i;
|
|
if (hanging_parens) {
|
|
for (i = 0; i<hanging_parens; i++)
|
|
Printf(out, ")");
|
|
hanging_parens = 0;
|
|
need_newline = true;
|
|
need_whitespace = true;
|
|
}
|
|
if (need_newline) {
|
|
Printf(out, "\n");
|
|
print_indent();
|
|
need_newline = false;
|
|
need_whitespace = false;
|
|
}
|
|
else if (need_whitespace) {
|
|
Printf(out, " ");
|
|
need_whitespace = false;
|
|
}
|
|
}
|
|
|
|
void print_lazy_whitespace()
|
|
{
|
|
need_whitespace = 1;
|
|
}
|
|
|
|
void print_lazy_newline()
|
|
{
|
|
need_newline = 1;
|
|
}
|
|
|
|
bool internal_key_p(DOH *key)
|
|
{
|
|
return ((Cmp(key,"nodeType") == 0)
|
|
|| (Cmp(key,"firstChild") == 0)
|
|
|| (Cmp(key,"lastChild") == 0)
|
|
|| (Cmp(key,"parentNode") == 0)
|
|
|| (Cmp(key,"nextSibling") == 0)
|
|
|| (Cmp(key,"previousSibling") == 0)
|
|
|| (Cmp(key,"csym:nextSibling") == 0)
|
|
|| (Cmp(key,"csym:previousSibling") == 0)
|
|
|| (Cmp(key,"typepass:visit") == 0)
|
|
|| (Cmp(key,"allocate:visit") == 0)
|
|
|| (*(Char(key)) == '$'));
|
|
}
|
|
|
|
bool boolean_key_p(DOH *key)
|
|
{
|
|
return ((Cmp(key,"allocate:default_constructor") == 0)
|
|
|| (Cmp(key,"allocate:default_destructor") == 0)
|
|
|| (Cmp(key,"allows_typedef") == 0)
|
|
|| (Cmp(key,"feature:immutable") == 0));
|
|
}
|
|
|
|
bool list_key_p(DOH *key)
|
|
{
|
|
return ((Cmp(key, "parms") == 0)
|
|
|| (Cmp(key, "baselist") == 0));
|
|
}
|
|
|
|
bool plist_key_p(DOH *key)
|
|
// true if KEY is the name of data that is a mapping from keys to
|
|
// values, which should be printed as a plist.
|
|
{
|
|
return ((Cmp(key, "typescope") == 0));
|
|
}
|
|
|
|
bool maybe_plist_key_p(DOH *key)
|
|
{
|
|
return (Strncmp(key, "tmap:", 5) == 0);
|
|
}
|
|
|
|
bool print_circle(DOH *obj, bool list_p)
|
|
// We have a complex object, which might be referenced several
|
|
// times, or even recursively. Use Lisp's reader notation for
|
|
// circular structures (#n#, #n=).
|
|
//
|
|
// An object can be printed in list-mode or object-mode; LIST_P toggles.
|
|
// return TRUE if OBJ still needs to be printed
|
|
{
|
|
flush_parens();
|
|
// Following is a silly hack. It works around the limitation of
|
|
// DOH's hash tables that only work with string keys!
|
|
char address[32];
|
|
sprintf(address, "%p%c", obj, list_p ? 'L' : 'O');
|
|
DOH *placeholder = Getattr(print_circle_hash, address);
|
|
if (placeholder) {
|
|
Printv(out, placeholder, NIL);
|
|
return false;
|
|
}
|
|
else {
|
|
String *placeholder = NewStringf("#%d#", ++print_circle_count);
|
|
Setattr(print_circle_hash, address, placeholder);
|
|
Printf(out, "#%d=", print_circle_count);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
void Sexp_print_value_of_key(DOH *value, DOH *key)
|
|
{
|
|
if ((Cmp(key, "parms") == 0) || (Cmp(key, "wrap:parms") == 0)
|
|
|| (Cmp(key, "kwargs") == 0) || (Cmp(key, "pattern") == 0))
|
|
Sexp_print_parms(value);
|
|
else if (plist_key_p(key))
|
|
Sexp_print_plist(value);
|
|
else if (maybe_plist_key_p(key)) {
|
|
if (DohIsMapping(value))
|
|
Sexp_print_plist(value);
|
|
else
|
|
Sexp_print_doh(value);
|
|
}
|
|
else if (list_key_p(key))
|
|
Sexp_print_list(value);
|
|
else if (boolean_key_p(key))
|
|
Sexp_print_boolean(value);
|
|
else
|
|
Sexp_print_doh(value);
|
|
}
|
|
|
|
void Sexp_print_boolean(DOH *obj)
|
|
{
|
|
flush_parens();
|
|
/* See DOH/Doh/base.c, DohGetInt() */
|
|
if (DohIsString(obj)) {
|
|
if (atoi(Char(obj)) != 0)
|
|
Printf(out, "t");
|
|
else Printf(out, "nil");
|
|
}
|
|
else Printf(out, "nil");
|
|
}
|
|
|
|
void Sexp_print_list(DOH *obj)
|
|
{
|
|
if (print_circle(obj, true)) {
|
|
open_paren(NIL);
|
|
for (; obj; obj = nextSibling(obj)) {
|
|
Sexp_print_doh(obj);
|
|
print_lazy_whitespace();
|
|
}
|
|
close_paren(true);
|
|
}
|
|
}
|
|
|
|
void Sexp_print_parms(DOH *obj)
|
|
// print it as a list of plists
|
|
{
|
|
if (print_circle(obj, true)) {
|
|
open_paren(NIL);
|
|
for (; obj; obj = nextSibling(obj)) {
|
|
if (DohIsMapping(obj)) {
|
|
Iterator k;
|
|
open_paren(NIL);
|
|
for (k = First(obj); k.key; k = Next(k)) {
|
|
if (!internal_key_p(k.key)) {
|
|
DOH *value = Getattr(obj, k.key);
|
|
Sexp_print_as_keyword(k.key);
|
|
Sexp_print_value_of_key(value, k.key);
|
|
print_lazy_whitespace();
|
|
}
|
|
}
|
|
close_paren(true);
|
|
}
|
|
else Sexp_print_doh(obj);
|
|
print_lazy_whitespace();
|
|
}
|
|
close_paren(true);
|
|
}
|
|
}
|
|
|
|
void Sexp_print_doh(DOH *obj)
|
|
{
|
|
flush_parens();
|
|
if (DohIsString(obj)) {
|
|
String *o = Str(obj);
|
|
Replaceall( o, "\\", "\\\\" );
|
|
Replaceall( o, "\"", "\\\"" );
|
|
Printf(out,"\"%s\"", o);
|
|
Delete(o);
|
|
}
|
|
else {
|
|
if (print_circle(obj, false)) {
|
|
// Dispatch type
|
|
if (nodeType(obj)) {
|
|
Sexp_print_node(obj);
|
|
}
|
|
|
|
else if (DohIsMapping(obj)) {
|
|
Iterator k;
|
|
open_paren(NIL);
|
|
for (k = First(obj); k.key; k = Next(k)) {
|
|
if (!internal_key_p(k.key)) {
|
|
DOH *value = Getattr(obj, k.key);
|
|
flush_parens();
|
|
open_paren(NIL);
|
|
Sexp_print_doh(k.key);
|
|
Printf(out, " . ");
|
|
Sexp_print_value_of_key(value, k.key);
|
|
close_paren();
|
|
}
|
|
}
|
|
close_paren();
|
|
}
|
|
else if (strcmp(ObjType(obj)->objname, "List") == 0) {
|
|
int i;
|
|
open_paren(NIL);
|
|
for (i = 0; i<Len(obj); i++) {
|
|
DOH *item = Getitem(obj, i);
|
|
Sexp_print_doh(item);
|
|
}
|
|
close_paren();
|
|
}
|
|
else {
|
|
// What is it?
|
|
Printf(out,"#<DOH %s %x>", ObjType(obj)->objname, obj);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Sexp_print_as_keyword(const DOH *k)
|
|
{
|
|
/* Print key, replacing ":" with "-" because : is CL's package prefix */
|
|
flush_parens();
|
|
String *key = NewString(k);
|
|
Replaceall(key, ":", "-");
|
|
Replaceall(key, "_", "-");
|
|
Printf(out,":%s ", key);
|
|
Delete(key);
|
|
}
|
|
|
|
void Sexp_print_plist_noparens(DOH *obj)
|
|
{
|
|
/* attributes map names to objects */
|
|
Iterator k;
|
|
bool first;
|
|
for (k = First(obj), first = true; k.key; k = Next(k), first=false) {
|
|
if (!internal_key_p(k.key)) {
|
|
DOH *value = Getattr(obj, k.key);
|
|
flush_parens();
|
|
if (!first) {
|
|
Printf(out, " ");
|
|
}
|
|
Sexp_print_as_keyword(k.key);
|
|
/* Print value */
|
|
Sexp_print_value_of_key(value, k.key);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Sexp_print_plist(DOH *obj)
|
|
{
|
|
flush_parens();
|
|
if (print_circle(obj, true)) {
|
|
open_paren(NIL);
|
|
Sexp_print_plist_noparens(obj);
|
|
close_paren();
|
|
}
|
|
}
|
|
|
|
void Sexp_print_attributes(Node * obj)
|
|
{
|
|
Sexp_print_plist_noparens(obj);
|
|
}
|
|
|
|
void Sexp_print_node(Node *obj)
|
|
{
|
|
Node *cobj;
|
|
open_paren(nodeType(obj));
|
|
/* A node has an attribute list... */
|
|
Sexp_print_attributes(obj);
|
|
/* ... and child nodes. */
|
|
cobj = firstChild(obj);
|
|
if (cobj) {
|
|
print_lazy_newline();
|
|
flush_parens();
|
|
Sexp_print_as_keyword("children");
|
|
open_paren(NIL);
|
|
for (; cobj; cobj = nextSibling(cobj)) {
|
|
Sexp_print_node(cobj);
|
|
}
|
|
close_paren();
|
|
}
|
|
close_paren();
|
|
}
|
|
|
|
|
|
virtual int functionWrapper(Node *n)
|
|
{
|
|
ParmList *l = Getattr(n,"parms");
|
|
Wrapper *f = NewWrapper();
|
|
emit_attach_parmmaps(l,f);
|
|
Setattr(n,"wrap:parms",l);
|
|
return SWIG_OK;
|
|
}
|
|
|
|
};
|
|
|
|
|
|
static Language * new_swig_sexp() {
|
|
return new Sexp();
|
|
}
|
|
extern "C" Language * swig_sexp( void ) {
|
|
return new_swig_sexp();
|
|
}
|