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+// Licensed to Cloudera, Inc. under one
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+// or more contributor license agreements. See the NOTICE file
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+// distributed with this work for additional information
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+// regarding copyright ownership. Cloudera, Inc. licenses this file
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+// to you under the Apache License, Version 2.0 (the
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+// "License"); you may not use this file except in compliance
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+// with the License. You may obtain a copy of the License at
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+//
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+// http://www.apache.org/licenses/LICENSE-2.0
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+//
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+// Unless required by applicable law or agreed to in writing, software
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+// distributed under the License is distributed on an "AS IS" BASIS,
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+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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+// See the License for the specific language governing permissions and
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+// limitations under the License.
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+
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+(function () {
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+ function forEach(arr, f) {
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+ for (var i = 0, e = arr.length; i < e; ++i) f(arr[i]);
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+ }
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+
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+ function arrayContains(arr, item) {
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+ if (!Array.prototype.indexOf) {
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+ var i = arr.length;
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+ while (i--) {
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+ if (arr[i] === item) {
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+ return true;
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+ }
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+ }
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+ return false;
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+ }
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+ return arr.indexOf(item) != -1;
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+ }
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+
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+ function scriptHint(editor, _keywords, getToken) {
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+ // Find the token at the cursor
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+ var cur = editor.getCursor(), token = getToken(editor, cur), tprop = token;
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+
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+ // If it's not a 'word-style' or dot token, ignore the token.
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+ if (!/^[\.\w$_]*$/.test(token.string)) {
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+ token = tprop = {start: cur.ch, end: cur.ch, string: "", state: token.state,
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+ className: token.string == "." ? "impalasql-type" : null};
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+ }
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+
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+ if (!context) var context = [];
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+ context.push(tprop);
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+
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+ var completionList = getCompletions(token, context);
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+ //prevent autocomplete for last word, instead show dropdown with one word
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+ if (completionList.length == 1) {
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+ completionList.push(" ");
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+ }
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+
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+ return {list: completionList,
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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.catalogTables = "";
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+ CodeMirror.catalogFields = "";
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+ CodeMirror.possibleTable = false;
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+ CodeMirror.possibleSoloField = false;
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+
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+ CodeMirror.impalaSQLHint = function (editor) {
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+ return scriptHint(editor, impalaSQLKeywordsU, function (e, cur) {
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+ return e.getTokenAt(cur);
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+ });
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+ };
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+
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+ var impalaSQLKeywords = "ALL AND AS BY COMMENT CREATE DATABASE DATABASES DELIMITED DESCRIBE DISTINCT DROP EXISTS EXPLAIN EXTERNAL FIELDS FORMAT FROM GROUP HAVING IF INSERT INTO JOIN LIKE LIMIT LINES LOCATION NOT OR ORDER OVERWRITE PARTITIONED REFRESH ROW SCHEMA SCHEMAS SELECT SHOW STORED TABLE TABLES TERMINATED UNION USE WHERE";
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+ var impalaSQLKeywordsU = impalaSQLKeywords.split(" ");
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+ var impalaSQLKeywordsL = impalaSQLKeywords.toLowerCase().split(" ");
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+
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+ var impalaSQLKeywordsAfterTables = "JOIN ON WHERE";
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+ var impalaSQLKeywordsAfterTablesU = impalaSQLKeywordsAfterTables.split(" ");
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+ var impalaSQLKeywordsAfterTablesL = impalaSQLKeywordsAfterTables.toLowerCase().split(" ");
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+
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+ var impalaSQLTypes = "TINYINT SMALLINT INT BIGINT BOOLEAN FLOAT DOUBLE STRING TIMESTAMP PARQUETFILE SEQUENCEFILE TEXTFILE RCFILE";
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+ var impalaSQLTypesU = impalaSQLTypes.split(" ");
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+ var impalaSQLTypesL = impalaSQLTypes.toLowerCase().split(" ");
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+
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+ var impalaSQLBuiltins = "COUNT SUM CAST LIKE IN BETWEEN COALESCE";
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+ var impalaSQLBuiltinsU = impalaSQLBuiltins.split(" ").join("() ").split(" ");
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+ var impalaSQLBuiltinsL = impalaSQLBuiltins.toLowerCase().split(" ").join("() ").split(" ");
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+
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+ function getCompletions(token, context) {
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+ var catalogTablesL = CodeMirror.catalogTables.toLowerCase().split(" ");
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+ var catalogFieldsL = CodeMirror.catalogFields.toLowerCase().split(" ");
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+
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+ var found = [], start = token.string, extraFound = [];
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+
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+ function maybeAdd(str) {
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+ if (str.indexOf(start) == 0 && !arrayContains(found, str)) found.push(str);
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+ }
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+
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+ function maybeAddToExtra(str) {
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+ if (str.indexOf(start) == 0 && !arrayContains(found, str)) extraFound.push(str);
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+ }
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+
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+ function gatherCompletions(obj) {
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+ if (obj.indexOf(".") == 0) {
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+ forEach(catalogFieldsL, maybeAdd);
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+ }
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+ else {
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+ if (!CodeMirror.possibleTable) {
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+ if (CodeMirror.possibleSoloField) {
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+ forEach(catalogFieldsL, maybeAddToExtra);
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+ }
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+ forEach(impalaSQLBuiltinsU, maybeAdd);
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+ forEach(impalaSQLBuiltinsL, maybeAdd);
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+ forEach(impalaSQLTypesU, maybeAdd);
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+ forEach(impalaSQLTypesL, maybeAdd);
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+ forEach(impalaSQLKeywordsU, maybeAdd);
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+ forEach(impalaSQLKeywordsL, maybeAdd);
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+ }
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+ else {
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+ forEach(catalogTablesL, maybeAddToExtra);
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+ forEach(impalaSQLKeywordsAfterTablesU, maybeAdd);
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+ forEach(impalaSQLKeywordsAfterTablesL, maybeAdd);
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+ }
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+ }
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+ }
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+
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+ if (context) {
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+ // If this is a property, see if it belongs to some object we can
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+ // find in the current environment.
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+ var obj = context.pop(), base;
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+ base = obj.string;
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+
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+ while (base != null && context.length)
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+ base = base[context.pop().string];
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+ if (base != null) gatherCompletions(base);
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+ }
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+ return extraFound.sort().concat(found.sort());
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+ }
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+})();
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