769 lines
18 KiB
JavaScript
769 lines
18 KiB
JavaScript
"use strict"
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/*
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ISC License
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Copyright 2019, Jennifer L Schmidt
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Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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https://whitewhalestories.com
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*/
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var ishml = ishml || {}
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//var Ishmael = Ishmael || ishml //Call me Ishmael.
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ishml.enum=ishml.enum || {}
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ishml.enum.mode={all:Symbol('all'),any:Symbol('any'),apt: Symbol('apt')}
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ishml.enum.pos=
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{
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adjective:Symbol("adjective"),
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adverb:Symbol("adverb"),
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conjunction:Symbol("conjunction"),
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noun:Symbol("noun"),
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prefix:Symbol("prefix"),
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preposition:Symbol("preposition"),
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suffix:Symbol("suffix"),
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verb:Symbol("verb")
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}
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ishml.Interpretation=function Interpretation(gist={},remainder="",valid=true)
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{
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if (this instanceof ishml.Interpretation)
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{
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if (gist instanceof Array)
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{
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this.gist=gist.slice(0)
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}
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else
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{
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if(gist instanceof ishml.Token)
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{
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this.gist=gist.clone()
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}
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else
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{
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this.gist=Object.assign({},gist)
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}
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}
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this.remainder=remainder.slice()
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this.valid=valid
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return this
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}
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else
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{
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return new Interpretation(gist,remainder)
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}
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}
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ishml.Lexicon=function Lexicon()
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{
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if (this instanceof ishml.Lexicon)
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{
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Object.defineProperty(this, "trie", {value:{},writable: true})
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return this
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}
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else
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{
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return new Lexicon()
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}
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}
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ishml.Lexicon.prototype.register = function (...someLexemes)
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{
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var lexemes=someLexemes
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var _as =function(definition)
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{
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lexemes.forEach((lexeme)=>
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{
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var _trie = this.trie
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for (let i = 0, length =lexeme.length; i < length; i++)
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{
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var character = lexeme.charAt(i)
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_trie = (_trie[character] =_trie[character] || {})
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}
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if (!_trie.definitions)
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{
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_trie.definitions= []
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}
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_trie.definitions.push(definition)
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})
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return this
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}
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return {as:_as.bind(this)}
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}
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ishml.Lexicon.prototype.search = function (searchText, {regex=false,separator=/^\s+/, lax=false, caseSensitive=false, longest=false, full=false}={})
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{
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var _trie = this.trie
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var _results = []
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//trim leading separators.
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if (separator && separator.test(searchText))
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{
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var trimmedText=searchText.split(separator,2)[1]
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}
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else
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{
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var trimmedText=searchText
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}
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if(regex)
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{
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var match=trimmedText.match(regex)
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if (match)
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{
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var result={}
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var definitions=[]
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definitions[0]={fuzzy:true}
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result.token=new ishml.Token(match[0],definitions)
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result.remainder=trimmedText.slice(match[0].length)
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_results.push(result)
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}
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return _results
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}
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else
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{
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for (let i=0; i < trimmedText.length; i++)
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{
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if (caseSensitive){var character=trimmedText.charAt(i)}
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else{var character=trimmedText.charAt(i).toLowerCase()}
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if ( ! _trie[character])
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{
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if(longest|full)
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{
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_results= _results.slice(0,1)
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if(full && _results[0].remainder.length>0 ){_results=[]}
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else { return _results}
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}
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else
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{
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return _results
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}
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}
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else
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{
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if (_trie[character].definitions)
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{
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if (i<trimmedText.length-1)
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{
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if (lax || (separator===false) || (separator && separator.test(trimmedText.substring(i+1))))
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{
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var result={}
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result.token=new ishml.Token(trimmedText.substring(0,i+1),_trie[character].definitions)
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result.remainder=trimmedText.substring(i+1).slice(0)
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_results.unshift(result)
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}
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}
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else // if (i===trimmedtext.length-1)
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{
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var result={}
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result.token=new ishml.Token(trimmedText.substring(0),_trie[character].definitions)
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result.remainder=""
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_results.unshift(result)
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}
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}
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_trie = _trie[character]
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}
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}
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}
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if(longest|full)
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{
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_results= _results.slice(0,1)
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if(full && _results[0].remainder.length>0 ){_results=[]}
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}
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return _results
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}
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ishml.Lexicon.prototype.unregister=function(lexeme,definition)
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{
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var _lexeme=lexeme.toLowerCase()
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var _trie = this.trie
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var j=0
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for (let i=0; i < _lexeme.length; i++)
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{
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var character=_lexeme.charAt(i)
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if ( ! _trie[character])
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{
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return this
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}
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else
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{
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_trie = _trie[character]
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}
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}
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if (definition !== undefined)
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{
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if (_trie.hasOwnProperty("definitions"))
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{
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_trie.definitions=_trie.definitions.filter((def)=>
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{
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var mismatch=Object.entries(definition).some(([key,value])=>
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{
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if(def[key]!==value)
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{
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return true
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}
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})
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if (mismatch){return true}
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else {return false}
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})
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if (_trie.definitions.length===0 )
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{
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delete _trie.definitions
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}
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}
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}
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else
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{
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delete _trie.definitions
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}
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return this
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}
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ishml.Parser=function Parser({lexicon,grammar}={})
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{
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if (this instanceof ishml.Parser)
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{
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this.lexicon=lexicon
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this.grammar=grammar
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}
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else
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{
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return new Parser({lexicon:lexicon,grammar:grammar})
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}
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}
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ishml.Parser.prototype.analyze=function(text)
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{
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var interpretations=[]
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var partialInterpretations=[]
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var completeInterpretations=[]
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var {snippets:result}=this.grammar.parse(text,this.lexicon)
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if (result)
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{
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interpretations=interpretations.concat(result)
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}
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interpretations.forEach((interpretation)=>
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{
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if (interpretation.remainder.length>0)
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{
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partialInterpretations.push(interpretation)
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}
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else
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{
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completeInterpretations.push(interpretation)
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}
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})
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if (completeInterpretations.length>0)
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{
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return {success:true, interpretations:completeInterpretations}
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}
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else
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{
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if (partialInterpretations.length>0)
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{
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return {success:false, interpretations: partialInterpretations.sort(function(first,second){return first.remainder.length - second.remainder.length})}
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}
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else
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{
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return { success: false}
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}
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}
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}
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ishml.regex=ishml.regex||{}
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ishml.regex.word=/(^\w*)(.*)/
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ishml.regex.floatingPointNumber=/^-?([0-9]*[.])?[0-9]+/
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ishml.Rule=function Rule()
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{
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if (this instanceof ishml.Rule)
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{
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Object.defineProperty(this, "caseSensitive", {value:false, writable: true})
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Object.defineProperty(this, "entire", {value:false, writable: true})
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Object.defineProperty(this, "full", {value:false, writable: true})
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Object.defineProperty(this, "filter", {value:(definition)=>true, writable: true})
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Object.defineProperty(this, "greedy", {value:false, writable: true})
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Object.defineProperty(this, "keep", {value:true, writable: true})
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Object.defineProperty(this, "lax", {value:false, writable: true})
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Object.defineProperty(this, "longest", {value:false, writable: true})
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Object.defineProperty(this, "minimum", {value:1, writable: true})
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Object.defineProperty(this, "maximum", {value:1, writable: true})
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Object.defineProperty(this, "mode", {value:ishml.enum.mode.all, writable: true})
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Object.defineProperty(this, "semantics", {value:(interpretation)=>true, writable: true})
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Object.defineProperty(this, "mismatch", {value:(interpretation)=>false, writable: true})
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Object.defineProperty(this, "separator", {value:/^\s/, writable: true})
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Object.defineProperty(this, "regex", {value:false, writable: true})
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return this
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}
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else
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{
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return new Rule()
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}
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}
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ishml.Rule.prototype.clone =function()
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{
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var circularReferences=new Set()
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function _clone(rule)
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{
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var clonedRule= new ishml.Rule().configure({caseSensitive:rule.caseSensitive, entire:rule.entire, filter:rule.filter, full:rule.full, greedy:rule.greedy, keep:rule.keep, lax:rule.lax, longest:rule.longest, minimum:rule.minimum, maximum:rule.maximum, mode:rule.mode, mismatch:rule.mismatch, regex:rule.regex, semantics:rule.semantics, separator:rule.separator})
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var entries=Object.entries(rule)
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entries.forEach(([key,value])=>
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{
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if (circularReferences.has(value))
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{
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clonedRule[key]=value
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}
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else
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{
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circularReferences.add(value)
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clonedRule[key]=_clone(value)
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}
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})
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return clonedRule
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}
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return _clone(this)
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}
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//DEFECT Entire not documented.
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ishml.Rule.prototype.configure =function({caseSensitive, entire,filter, full, greedy, keep, lax, longest, minimum,maximum, mode,mismatch, regex, semantics, separator}={})
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{
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if(caseSensitive !== undefined){this.caseSensitive=caseSensitive}
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if(entire !== undefined){this.entire=entire}
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if(filter !== undefined){this.filter=filter}
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if(full !== undefined){this.full=full}
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if(greedy !== undefined){this.greedy=greedy}
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if(keep !== undefined){this.keep=keep}
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if(lax !== undefined){this.lax=lax}
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if(longest !== undefined){this.longest=longest}
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if(minimum !== undefined){this.minimum=minimum}
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if(maximum !== undefined){this.maximum=maximum}
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if(mode !== undefined){this.mode=mode}
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if(mismatch !== undefined){this.mismatch=mismatch}
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if(regex !== undefined){this.regex=regex}
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if(semantics !== undefined){this.semantics=semantics}
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if(separator !== undefined){this.separator=separator}
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return this
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}
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ishml.Rule.prototype.parse =function(text,lexicon)
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{
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var someText=text.slice(0)
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var results=[]
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var keys=Object.keys(this)
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if (keys.length>0)
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//non-terminal
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{
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switch (this.mode)
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{
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case ishml.enum.mode.all:
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if (this.maximum ===1 ){var candidates=[new ishml.Interpretation({},someText)]}
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else {var candidates=[new ishml.Interpretation([],someText)]}
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var counter = 0
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var phrases=[]
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var revisedCandidates=candidates.slice(0)
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while (counter<this.maximum)
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{
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for (let key of keys)
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{
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revisedCandidates.forEach(candidate=>
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{
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var {gist,remainder,valid}=candidate
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//SNIP
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if (remainder.length>0)
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{
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var {snippets}=this[key].parse(remainder.slice(0),lexicon)
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snippets.forEach((snippet)=>
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{
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var phrase=new ishml.Interpretation(gist,snippet.remainder,snippet.valid && valid)
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if (this.maximum ===1 )
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{
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if(this[key].keep || !phrase.valid){phrase.gist[key]=snippet.gist}
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}
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else
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{
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if(phrase.gist.length===counter){phrase.gist.push({})}
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if(this[key].keep || !phrase.valid){phrase.gist[counter][key]=snippet.gist}
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}
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phrases.push(phrase)
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})
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}
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})
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if (this[key].minimum===0)
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{
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//revisedCandidates=revisedCandidates.concat(phrases.filter(p=>p.valid))
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revisedCandidates=revisedCandidates.concat(phrases.slice(0))
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}
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else
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{
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revisedCandidates=phrases.slice(0)
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}
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phrases=[]
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}
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counter++
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if (revisedCandidates.length===0)
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{
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break
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}
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else
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{
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if (counter >= this.minimum)
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{
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if (this.greedy){results=revisedCandidates.slice(0)}
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else {results=results.concat(revisedCandidates)}
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}
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}
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}
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break
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case ishml.enum.mode.any:
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if (this.maximum ===1 ){var candidates=[new ishml.Interpretation({},someText)]}
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else {var candidates=[new ishml.Interpretation([],someText)]}
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var revisedCandidates=candidates.slice(0)
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for (let key of keys)
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{
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var counter = 0
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var phrases=[]
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while (counter<this.maximum)
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{
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revisedCandidates.forEach(candidate=>
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{
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var {gist,remainder,valid}=candidate
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//SNIP
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if (remainder.length>0)
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{
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var {snippets}=this[key].parse(remainder.slice(0),lexicon)
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snippets.forEach((snippet)=>
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{
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var phrase=new ishml.Interpretation(gist,snippet.remainder,snippet.valid && valid)
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if (this.maximum ===1 )
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{
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if(this[key].keep || !phrase.valid){phrase.gist=snippet.gist}
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}
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else
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{
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if(phrase.gist.length===counter){phrase.gist.push({})}
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if(this[key].keep || !phrase.valid){phrase.gist[counter]=snippet.gist}
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}
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phrases.push(phrase)
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})
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}
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})
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if (this[key].minimum===0)
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{
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//revisedCandidates=phrases.filter(p=>p.valid)
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revisedCandidates=phrases.slice(0)
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}
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else
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{
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revisedCandidates=phrases.slice(0)
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}
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phrases=[]
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counter++
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if (revisedCandidates.length===0){break}
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else
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{
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if (this.greedy){results=revisedCandidates.slice(0)}
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else {results=results.concat(revisedCandidates)}
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}
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}
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revisedCandidates=candidates.slice(0) //go see if there are more alternatives that work.
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}
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break
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case ishml.enum.mode.apt:
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if (this.maximum ===1 ){var candidates=[new ishml.Interpretation({},someText)]}
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else {var candidates=[new ishml.Interpretation([],someText)]}
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var revisedCandidates=candidates.slice(0)
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for (let key of keys)
|
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{
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var counter = 0
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var phrases=[]
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|
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while (counter<this.maximum)
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{
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revisedCandidates.forEach(candidate=>
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{
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var {gist,remainder,valid}=candidate
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//SNIP
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if (remainder.length>0)
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{
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var {snippets}=this[key].parse(remainder.slice(0),lexicon)
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snippets.forEach((snippet)=>
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{
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var phrase=new ishml.Interpretation(gist,snippet.remainder,snippet.valid && valid)
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if (this.maximum ===1 )
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{
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if(this[key].keep || !phrase.valid){phrase.gist=snippet.gist}
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}
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else
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{
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if(phrase.gist.length===counter){phrase.gist.push({})}
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if(this[key].keep || !phrase.valid){phrase.gist[counter]=snippet.gist}
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}
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phrases.push(phrase)
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})
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}
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})
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if (this[key].minimum===0)
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{
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revisedCandidates=phrases.slice(0)
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}
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else
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{
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revisedCandidates=phrases.slice(0)
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}
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phrases=[]
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counter++
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if (revisedCandidates.length===0){break}
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else
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{
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if (this.greedy){results=revisedCandidates.slice(0)}
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else {results=results.concat(revisedCandidates)}
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}
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}
|
|
if (results.length>0){break} //found something that works, stop looking.
|
|
revisedCandidates=candidates.slice(0)//try again with next key.
|
|
}
|
|
break
|
|
}
|
|
}
|
|
else
|
|
{
|
|
//terminal
|
|
|
|
if (this.maximum ===1 ){var candidates=[new ishml.Interpretation({},someText)]}
|
|
else {var candidates=[new ishml.Interpretation([],someText)]}
|
|
var revisedCandidates=candidates.slice(0)
|
|
|
|
var counter = 0
|
|
var phrases=[]
|
|
var rule = this
|
|
while (counter<this.maximum)
|
|
{
|
|
revisedCandidates.forEach((candidate)=>
|
|
{
|
|
|
|
var {gist,remainder,valid}=candidate
|
|
//SNIP
|
|
if (remainder.length>0)
|
|
{
|
|
var snippets=lexicon.search(remainder, {regex:rule.regex,separator:rule.separator, lax:rule.lax, caseSensitive:rule.caseSensitive, longest:rule.longest, full:rule.full})
|
|
|
|
snippets.forEach((snippet)=>
|
|
{
|
|
snippet.token.definitions=snippet.token.definitions.filter(this.filter)
|
|
if (snippet.token.definitions.length>0)
|
|
{
|
|
var phrase=new ishml.Interpretation(gist,snippet.remainder,snippet.valid && valid)
|
|
if (this.maximum ===1 )
|
|
{
|
|
if(this.keep || !phrase.valid){phrase.gist=snippet.token}
|
|
}
|
|
else
|
|
{
|
|
if(phrase.gist.length===counter){phrase.gist.push({})}
|
|
if(this.keep || !phrase.valid){phrase.gist[counter]=snippet.token}
|
|
}
|
|
phrases.push(phrase)
|
|
}
|
|
|
|
})
|
|
}
|
|
})
|
|
/* if (this.minimum===0)
|
|
{
|
|
revisedCandidates=phrases.filter(p=>p.valid)
|
|
}
|
|
else{
|
|
*/
|
|
revisedCandidates=phrases.slice(0) //}
|
|
phrases=[]
|
|
counter++
|
|
if (revisedCandidates.length===0)
|
|
{
|
|
|
|
break
|
|
}
|
|
else
|
|
{
|
|
if (this.greedy){results=revisedCandidates.slice(0)}
|
|
else {results=results.concat(revisedCandidates)}
|
|
}
|
|
}
|
|
|
|
}
|
|
results=results.map(interpretation=>
|
|
{
|
|
if(interpretation.remainder.length>0 && this.entire)
|
|
{
|
|
interpretation.valid=false
|
|
}
|
|
return interpretation
|
|
})
|
|
|
|
if (!results.some(interpretation=>interpretation.valid))
|
|
{
|
|
if (results.length===0){results=candidates}
|
|
results=results.reduce((revisedResults, interpretation) =>
|
|
{
|
|
var revisedInterpretation=this.mismatch(interpretation)
|
|
if (revisedInterpretation)
|
|
{
|
|
if (revisedInterpretation)
|
|
{
|
|
revisedResults.push(revisedInterpretation)
|
|
}
|
|
}
|
|
return revisedResults
|
|
|
|
},[])
|
|
|
|
}
|
|
|
|
results=results.reduce((revisedResults, interpretation) =>
|
|
{
|
|
if (interpretation.valid)
|
|
{
|
|
var revisedInterpretation=this.semantics(interpretation)
|
|
if (revisedInterpretation)
|
|
{
|
|
if (revisedInterpretation === true)
|
|
{
|
|
revisedResults.push(interpretation)
|
|
}
|
|
else
|
|
{
|
|
revisedResults.push(revisedInterpretation)
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
revisedResults.push(interpretation)
|
|
}
|
|
return revisedResults
|
|
|
|
},[])
|
|
if (results.length>0)
|
|
{
|
|
/* var validResults=results.filter((interpretation)=>
|
|
{
|
|
return interpretation.valid
|
|
})
|
|
if (validResults.length>0)
|
|
{
|
|
return {snippets:validResults}
|
|
}
|
|
else
|
|
{
|
|
return {snippets:results}
|
|
}
|
|
*/
|
|
return {snippets:results}
|
|
}
|
|
else
|
|
{
|
|
return {snippets:[]}
|
|
}
|
|
}
|
|
ishml.Rule.prototype.snip =function(key,rule)
|
|
{
|
|
|
|
if (rule instanceof ishml.Rule)
|
|
{
|
|
this[key]=rule
|
|
}
|
|
else
|
|
{
|
|
this[key]=new ishml.Rule(key)
|
|
|
|
this[key].caseSensitive=this.caseSensitive
|
|
this[key].full=this.full
|
|
this[key].lax=this.lax
|
|
this[key].longest=this.longest
|
|
this[key].separator=this.separator
|
|
|
|
}
|
|
return this
|
|
}
|
|
ishml.Token=function Token(lexeme="",definitions=[])
|
|
{
|
|
if (this instanceof ishml.Token)
|
|
{
|
|
this.lexeme=lexeme.slice(0)
|
|
this.definitions=definitions.slice(0)
|
|
return this
|
|
}
|
|
else
|
|
{
|
|
return new Token(lexeme,definitions)
|
|
}
|
|
}
|
|
ishml.Token.prototype.clone=function()
|
|
{
|
|
return new ishml.Token(this.lexeme,this.definitions)
|
|
}
|
|
ishml.util={_seed:undefined}
|
|
|
|
ishml.util.enumerator=function* (aStart =1)
|
|
{
|
|
let i = aStart;
|
|
while (true) yield i++
|
|
}
|
|
|
|
ishml.util.formatId=function(id)
|
|
{
|
|
if(id)
|
|
{
|
|
if (typeof(id)==="string"){return id.replace(/\s+/g, '_')}
|
|
else{return id.id.replace(/\s+/g, '_')}
|
|
}
|
|
else
|
|
{
|
|
return "auto" + ishml.util.autoid.next().value.toString()
|
|
}
|
|
}
|
|
ishml.util.autoid=ishml.util.enumerator()
|
|
ishml.util.random = function()
|
|
{
|
|
this._seed = this._seed * 16807 % 2147483647
|
|
return (this._seed-1)/2147483646
|
|
}
|
|
ishml.util.reseed = function(aSeed=Math.floor(Math.random() * 2147483648))
|
|
{
|
|
var seed=aSeed % 2147483647
|
|
if (seed <= 0){seed += 2147483646}
|
|
this._seed=seed
|
|
}
|
|
ishml.util.shuffle=function(anArray,aCount=undefined)
|
|
{
|
|
var array=anArray.slice(0)
|
|
var m = array.length
|
|
var count=aCount||array.length
|
|
for (let i=0; i < count; i++)
|
|
{
|
|
let randomIndex = Math.floor(this.random() * m--)
|
|
let item = array[m]
|
|
array[m] = array[randomIndex]
|
|
array[randomIndex] = item
|
|
}
|
|
return array.slice(-count)
|
|
}
|
|
|
|
module.exports = ishml
|