dt-sql-parser/dist/parser/postgresql/index.js

SQL Parsers for BigData, built with antlr4

import { PostgreSqlLexer } from '../../lib/postgresql/PostgreSqlLexer';
import { PostgreSqlParser } from '../../lib/postgresql/PostgreSqlParser';
import { BasicSQL } from '../common/basicSQL';
import { EntityContextType } from '../common/types';
import { PostgreSqlEntityCollector } from './postgreEntityCollector';
import { PostgreSqlErrorListener } from './postgreErrorListener';
import { PostgreSqlSplitListener } from './postgreSplitListener';
export { PostgreSqlEntityCollector, PostgreSqlSplitListener };
export class PostgreSQL extends BasicSQL {
    constructor() {
        super(...arguments);
        this.preferredRules = new Set([
            PostgreSqlParser.RULE_table_name_create, // table name
            PostgreSqlParser.RULE_table_name, // table name that will be created
            PostgreSqlParser.RULE_function_name, // function name
            PostgreSqlParser.RULE_function_name_create, // function name that will be created
            PostgreSqlParser.RULE_schema_name_create, // schema name that will be created
            PostgreSqlParser.RULE_schema_name, // schema name
            PostgreSqlParser.RULE_view_name_create, // view name that will be created
            PostgreSqlParser.RULE_view_name, // view name
            PostgreSqlParser.RULE_database_name_create, // database name that will be created
            PostgreSqlParser.RULE_database_name, // database name
            PostgreSqlParser.RULE_procedure_name_create, // procedure name that will be created
            PostgreSqlParser.RULE_procedure_name, // procedure name
            PostgreSqlParser.RULE_column_name_create, // column name that will be created
            PostgreSqlParser.RULE_column_name, // column name
        ]);
    }
    createLexerFromCharStream(charStreams) {
        return new PostgreSqlLexer(charStreams);
    }
    createParserFromTokenStream(tokenStream) {
        return new PostgreSqlParser(tokenStream);
    }
    get splitListener() {
        return new PostgreSqlSplitListener();
    }
    createErrorListener(_errorListener) {
        const parserContext = this;
        return new PostgreSqlErrorListener(_errorListener, parserContext, this.preferredRules);
    }
    createEntityCollector(input, allTokens, caretTokenIndex) {
        return new PostgreSqlEntityCollector(input, allTokens, caretTokenIndex);
    }
    processCandidates(candidates, allTokens, caretTokenIndex, tokenIndexOffset) {
        const originalSyntaxSuggestions = [];
        const keywords = [];
        for (let candidate of candidates.rules) {
            const [ruleType, candidateRule] = candidate;
            const startTokenIndex = candidateRule.startTokenIndex + tokenIndexOffset;
            const tokenRanges = allTokens.slice(startTokenIndex, caretTokenIndex + tokenIndexOffset + 1);
            let syntaxContextType = void 0;
            switch (ruleType) {
                case PostgreSqlParser.RULE_table_name_create: {
                    syntaxContextType = EntityContextType.TABLE_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_table_name: {
                    syntaxContextType = EntityContextType.TABLE;
                    break;
                }
                case PostgreSqlParser.RULE_function_name_create: {
                    syntaxContextType = EntityContextType.FUNCTION_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_function_name: {
                    syntaxContextType = EntityContextType.FUNCTION;
                    break;
                }
                case PostgreSqlParser.RULE_schema_name_create: {
                    syntaxContextType = EntityContextType.DATABASE_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_schema_name: {
                    syntaxContextType = EntityContextType.DATABASE;
                    break;
                }
                case PostgreSqlParser.RULE_view_name_create: {
                    syntaxContextType = EntityContextType.VIEW_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_view_name: {
                    syntaxContextType = EntityContextType.VIEW;
                    break;
                }
                case PostgreSqlParser.RULE_database_name_create: {
                    syntaxContextType = EntityContextType.DATABASE_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_database_name: {
                    syntaxContextType = EntityContextType.DATABASE;
                    break;
                }
                case PostgreSqlParser.RULE_procedure_name_create: {
                    syntaxContextType = EntityContextType.PROCEDURE_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_procedure_name: {
                    syntaxContextType = EntityContextType.PROCEDURE;
                    break;
                }
                case PostgreSqlParser.RULE_column_name_create: {
                    syntaxContextType = EntityContextType.COLUMN_CREATE;
                    break;
                }
                case PostgreSqlParser.RULE_column_name: {
                    syntaxContextType = EntityContextType.COLUMN;
                    break;
                }
                default:
                    break;
            }
            if (syntaxContextType) {
                originalSyntaxSuggestions.push({
                    syntaxContextType,
                    wordRanges: tokenRanges,
                });
            }
        }
        for (let candidate of candidates.tokens) {
            const symbolicName = this._parser.vocabulary.getSymbolicName(candidate[0]);
            const displayName = this._parser.vocabulary.getDisplayName(candidate[0]);
            if (displayName && symbolicName && symbolicName.startsWith('KW_')) {
                const keyword = displayName.startsWith("'") && displayName.endsWith("'")
                    ? displayName.slice(1, -1)
                    : displayName;
                keywords.push(keyword);
            }
        }
        return {
            syntax: originalSyntaxSuggestions,
            keywords,
        };
    }
}