dt-sql-parser
Version:
SQL Parsers for BigData, built with antlr4
79 lines (78 loc) • 3.69 kB
JavaScript
import { CodeCompletionCore } from 'antlr4-c3';
import { ParseErrorListener } from '../common/parseErrorListener';
import { SparkSqlParser } from '../../lib/spark/SparkSqlParser';
export class SparkErrorListener extends ParseErrorListener {
constructor() {
super(...arguments);
this.objectNames = new Map([
[SparkSqlParser.RULE_namespaceName, 'namespace'],
[SparkSqlParser.RULE_namespaceNameCreate, 'namespace'],
[SparkSqlParser.RULE_tableName, 'table'],
[SparkSqlParser.RULE_tableNameCreate, 'table'],
[SparkSqlParser.RULE_viewName, 'view'],
[SparkSqlParser.RULE_viewNameCreate, 'view'],
[SparkSqlParser.RULE_functionName, 'function'],
[SparkSqlParser.RULE_functionNameCreate, 'function'],
[SparkSqlParser.RULE_columnName, 'column'],
[SparkSqlParser.RULE_columnNamePath, 'column'],
[SparkSqlParser.RULE_columnNameCreate, 'column'],
]);
}
getExpectedText(parser, token) {
var _a;
let expectedText = '';
const input = this.parserContext.getParsedInput();
/**
* Get the program context.
* When called error listener, `this._parseTree` is still `undefined`,
* so we can't use cached parseTree in `getMinimumParserInfo`
*/
let currentContext = (_a = parser.context) !== null && _a !== void 0 ? _a : undefined;
while (currentContext === null || currentContext === void 0 ? void 0 : currentContext.parent) {
currentContext = currentContext.parent;
}
const parserInfo = this.parserContext.getMinimumParserInfo(input, token.tokenIndex, currentContext);
if (!parserInfo)
return '';
const { parser: c3Parser, newTokenIndex, parseTree: c3Context } = parserInfo;
const core = new CodeCompletionCore(c3Parser);
core.preferredRules = this.preferredRules;
const candidates = core.collectCandidates(newTokenIndex, c3Context);
if (candidates.rules.size) {
const result = [];
// get expectedText as collect rules first
for (const candidate of candidates.rules) {
const [ruleType] = candidate;
const name = this.objectNames.get(ruleType);
switch (ruleType) {
case SparkSqlParser.RULE_namespaceName:
case SparkSqlParser.RULE_tableName:
case SparkSqlParser.RULE_viewName:
case SparkSqlParser.RULE_functionName:
case SparkSqlParser.RULE_columnName:
case SparkSqlParser.RULE_columnNamePath: {
if (!result.includes(`{existing}${name}`)) {
result.push(`{existing}${name}`);
}
break;
}
case SparkSqlParser.RULE_namespaceNameCreate:
case SparkSqlParser.RULE_tableNameCreate:
case SparkSqlParser.RULE_functionNameCreate:
case SparkSqlParser.RULE_viewNameCreate:
case SparkSqlParser.RULE_columnNameCreate: {
if (!result.includes(`{new}${name}`)) {
result.push(`{new}${name}`);
}
break;
}
}
}
expectedText = result.join('{or}');
}
if (candidates.tokens.size) {
expectedText += expectedText ? '{orKeyword}' : '{keyword}';
}
return expectedText;
}
}