87 lines
2.1 KiB
Text
87 lines
2.1 KiB
Text
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# SPDX-License-Identifier: GPL-2.0-or-later
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#
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# NOTE! This copyright does *not* cover user models that use these Nasal
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# services by normal function calls - this is merely considered normal use
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# of the code, and does *not* fall under the heading of "derived work."
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#-------------------------------------------------------------------------------
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# hash.nas - simple hash class for development, allows to add callback on write
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# author: Henning Stahlke
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# created: 07/2020
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#-------------------------------------------------------------------------------
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#load only once (via /Nasal/std.nas) not via C++ module loader
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if (ishash(globals["std"]) and ishash(std["Hash"]))
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return;
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Hash = {
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new: func(hash=nil, name="") {
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var obj = {
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parents: [me],
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name: name,
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_h: {},
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_callback: func,
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};
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if (ishash(hash))
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obj._h = hash;
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return obj;
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},
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set: func (key, value) {
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me._h[key] = value;
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me._callback(key, value);
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return me;
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},
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get: func (key) {
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return me._h[key];
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},
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clear: func() {
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me._h = {};
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return me;
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},
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contains: func(key) {
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return contains(me._h, key);
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},
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getName: func () {
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return me.name;
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},
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getKeys: func () {
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return keys(me._h);
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},
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# export keys to props p/<keys>
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# p: root property path or props.Node object
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keys2props: func (p) {
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if (!isa(p, props.Node)) {
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p = props.getNode(p, 1);
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}
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foreach (var key; keys(me._h)) {
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p.getNode(key, 1);
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}
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return me;
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},
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# export hash to props p/<key>=<value>
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# p: root property path or props.Node object
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hash2props: func (p) {
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if (!isa(p, props.Node)) {
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p = props.getNode(p, 1);
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}
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p.setValues(me._h);
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return me;
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},
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# callback for set()
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addCallback: func (f) {
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if (isfunc(f)) {
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me._callback = f;
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return me;
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}
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return nil;
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},
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};
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