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106 lines
2.6 KiB
JavaScript
106 lines
2.6 KiB
JavaScript
7 years ago
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(function () {
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"use strict";
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var tables;
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var keywords;
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function getKeywords(editor) {
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var mode = editor.doc.modeOption;
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if(mode === "sql") mode = "text/x-sql";
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return CodeMirror.resolveMode(mode).keywords;
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}
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function match(string, word) {
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var len = string.length;
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var sub = word.substr(0, len);
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return string.toUpperCase() === sub.toUpperCase();
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}
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function addMatches(result, search, wordlist, formatter) {
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for(var word in wordlist) {
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if(!wordlist.hasOwnProperty(word)) continue;
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if(Array.isArray(wordlist)) {
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word = wordlist[word];
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}
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if(match(search, word)) {
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result.push(formatter(word));
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}
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}
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}
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function columnCompletion(result, editor) {
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var cur = editor.getCursor();
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var token = editor.getTokenAt(cur);
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var string = token.string.substr(1);
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var prevCur = CodeMirror.Pos(cur.line, token.start);
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var table = editor.getTokenAt(prevCur).string;
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var columns = tables[table];
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if(!columns) {
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table = findTableByAlias(table, editor);
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}
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columns = tables[table];
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if(!columns) {
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return;
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}
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addMatches(result, string, columns,
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function(w) {return "." + w;});
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}
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function eachWord(line, f) {
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var words = line.text.split(" ");
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for(var i = 0; i < words.length; i++) {
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f(words[i]);
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}
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}
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// Tries to find possible table name from alias.
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function findTableByAlias(alias, editor) {
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var aliasUpperCase = alias.toUpperCase();
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var previousWord = "";
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var table = "";
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editor.eachLine(function(line) {
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eachWord(line, function(word) {
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var wordUpperCase = word.toUpperCase();
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if(wordUpperCase === aliasUpperCase) {
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if(tables.hasOwnProperty(previousWord)) {
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table = previousWord;
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}
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}
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if(wordUpperCase !== "AS") {
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previousWord = word;
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}
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});
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});
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return table;
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}
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function sqlHint(editor, options) {
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tables = (options && options.tables) || {};
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keywords = keywords || getKeywords(editor);
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var cur = editor.getCursor();
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var token = editor.getTokenAt(cur);
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var result = [];
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var search = token.string.trim();
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addMatches(result, search, keywords,
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function(w) {return w.toUpperCase();});
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addMatches(result, search, tables,
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function(w) {return w;});
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if(search.lastIndexOf('.') === 0) {
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columnCompletion(result, editor);
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}
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return {
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list: result,
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from: CodeMirror.Pos(cur.line, token.start),
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to: CodeMirror.Pos(cur.line, token.end)
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};
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}
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CodeMirror.registerHelper("hint", "sql", sqlHint);
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})();
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