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Download(c) 2005-2025 XLOG Technologies AG
/**
* Modern Albufeira Prolog Interpreter
*
* Warranty & Liability
* To the extent permitted by applicable law and unless explicitly
* otherwise agreed upon, XLOG Technologies AG makes no warranties
* regarding the provided information. XLOG Technologies AG assumes
* no liability that any problems might be solved with the information
* provided by XLOG Technologies AG.
*
* Rights & License
* All industrial property rights regarding the information - copyright
* and patent rights in particular - are the sole property of XLOG
* Technologies AG. If the company was not the originator of some
* excerpts, XLOG Technologies AG has at least obtained the right to
* reproduce, change and translate the information.
*
* Reproduction is restricted to the whole unaltered document. Reproduction
* of the information is only allowed for non-commercial uses. Selling,
* giving away or letting of the execution of the library is prohibited.
* The library can be distributed as part of your applications and libraries
* for execution provided this comment remains unchanged.
*
* Restrictions
* Only to be distributed with programs that add significant and primary
* functionality to the library. Not to be distributed with additional
* software intended to replace any components of the library.
*
* Trademarks
* Jekejeke is a registered trademark of XLOG Technologies AG.
*/
import {exec_build, exec_unify, add, check_nonvar,
Compound, copy_term, fs, html_send,
make_error, Sink, make_check, deref, stream_flush,
put_atom, stream_close, fiddle_out, html_alert
} from "../../nova/core.mjs";
import {xml_escape
} from "../util/auxlib.mjs";
/*****************************************************************/
/* Sink API */
/*****************************************************************/
/**
* ir_is_sink(O):
* The predicate succeeds if O is a sink.
*/
function test_ir_is_sink(args) {
let obj = deref(exec_build(args[0]));
return (obj instanceof Sink);
}
/*****************************************************************/
/* DOM Machine */
/*****************************************************************/
/**
* ir_is_element(O):
* The predicate succeeds if O is a DOM element.
*/
function test_ir_is_element(args) {
let obj = deref(exec_build(args[0]));
if (fs !== undefined) {
return false;
} else {
return (obj instanceof Element);
}
}
/*****************************************************************/
/* Markup Streams */
/*****************************************************************/
/**
* dom_output_new(S, W):
* The predicate succeeds in W with a new markup writer for
* the underlying stream S.
*/
function test_dom_output_new(args) {
let obj = deref(exec_build(args[0]));
let dst;
if (obj instanceof Sink) {
dst = new Sink();
dst.data = obj;
dst.send = xml_send;
dst.notify = stream_flush;
dst.release = stream_close;
dst.buf = null;
} else {
check_element(obj);
let dom = new Sink();
dom.data = obj;
dom.send = fiddle_out;
dst = new Sink();
dst.data = dom;
dst.send = html_send;
dst.notify = stream_flush;
dst.release = stream_close;
dst.buf = null;
}
return exec_unify(args[1], dst);
}
export function check_element(beta) {
if (!(beta instanceof Element)) {
check_nonvar(beta);
beta = copy_term(beta);
throw make_error(new Compound("type_error", ["element", beta]));
}
}
function xml_send(data, buf) {
let text = xml_escape(buf);
put_atom(data, text);
return data;
}
/**
* dom_error_new(S, W):
* The predicate succeeds in W with a new markup writer for
* the underlying stream S.
*/
function test_dom_error_new(args) {
let obj = deref(exec_build(args[0]));
let dst;
if (obj instanceof Sink) {
dst = new Sink();
dst.data = obj;
dst.send = xml_alert;
dst.notify = stream_flush;
dst.release = stream_close;
dst.buf = null;
} else {
check_element(obj);
let dom = new Sink();
dom.data = obj;
dom.send = fiddle_out;
dst = new Sink();
dst.data = dom;
dst.send = html_alert;
dst.notify = stream_flush;
dst.release = stream_close;
dst.buf = null;
}
return exec_unify(args[1], dst);
}
function xml_alert(data, buf) {
let text = "<span style='color: #A52A2A'>";
text += xml_escape(buf);
text += "</span>";
put_atom(data, text);
return data;
}
/*********************************************************************/
/* Dom Lib Init */
/*********************************************************************/
export function main() {
add("ir_is_sink", 1, make_check(test_ir_is_sink));
add("ir_is_element", 1, make_check(test_ir_is_element));
add("dom_output_new", 2, make_check(test_dom_output_new));
add("dom_error_new", 2, make_check(test_dom_error_new));
}