odatafy-parser/dist/src/parsing/searchParser.js

generate odatafy ast from odata query parameters

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const peggy_1 = __importDefault(require("peggy"));
const searchExpressionPreProc_1 = __importDefault(require("../processing/searchExpressionPreProc"));
const errors_1 = require("../types/errors");
const utils_1 = require("../utils");
const searchParser = peggy_1.default.generate(`
search     = node:(searchExpr / searchExpr_incomplete) {return node}

searchExpr = ( 
               searchOrExpr
             / searchAndExpr
             / searchParenExpr
             / searchNegateExpr
             / searchPhrase
             / searchWord 
            )

searchParenExpr = OPEN BWS searchExpr:searchExpr BWS CLOSE {return searchExpr}

searchNegateExpr = 'NOT' RWS right:searchExpr {return{nodeType: "SearchOperatorNode", op: "NOT", right: right}}

searchOrExpr  = left:(searchParenExpr / searchNegateExpr / searchPhrase / searchWord) RWS 'OR' RWS right:searchExpr {return{nodeType: "SearchOperatorNode", op: "OR", left: left, right: right}}
searchAndExpr = left:(searchParenExpr / searchNegateExpr / searchPhrase / searchWord) (RWS 'AND')? RWS right:searchExpr  {return{nodeType: "SearchOperatorNode", op: "AND", left: left, right: right}}

searchPhrase = quotation_mark value:$( qchar_no_AMP_DQUOTE / SP )* quotation_mark {return {nodeType: "SearchItemNode", type: "Phrase", value: value}}

searchWord = value:$(searchChar ( searchChar / SQUOTE )*) {return {nodeType: "SearchItemNode", type: "Word", value: value}}
searchChar = unreserved / pct_encoded_no_DQUOTE / "!" / "*" / "+" / "," / ":" / "@" / "/" / "?" / "$" / "=" 

searchExpr_incomplete = SQUOTE value:$( SQUOTE_in_string / qchar_no_AMP_SQUOTE / quotation_mark / SP )* SQUOTE {return {nodeType: "SearchItemNode", type: "Phrase", value: value}}


qchar_no_AMP_SQUOTE       = unreserved / pct_encoded           / other_delims / ":" / "@" / "/" / "?" / "$" /       "="
qchar_no_AMP_DQUOTE       = unreserved / pct_encoded_no_DQUOTE / other_delims / ":" / "@" / "/" / "?" / "$" / "'" / "="

pct_encoded   = "%" HEXDIG HEXDIG

other_delims   = "!" /  "(" / ")" / "*" / "+" / "," / ";"

pct_encoded_no_DQUOTE = "%" ( "0" / "1" / "3" / "4" / "5" / "6" / "7" / "8" / "9" / A_to_F ) HEXDIG 
                      / "%" "2" ( "0" / "1" / "3" / "4" / "5" / "6" / "7" / "8" / "9" / A_to_F )



SQUOTE_in_string = SQUOTE SQUOTE

unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~" 

quotation_mark  = DQUOTE / "%22"

RWS = ( SP / HTAB / "%20" / "%09" )+  
BWS =  ( SP / HTAB / "%20" / "%09" )*  

AT     = "@" / "%40"
COLON  = ":" / "%3A"
COMMA  = "," / "%2C"
EQ     = "="
HASH   = "%23"
SIGN   = "+" / "%2B" / "-"
SEMI   = ";" / "%3B"
STAR   = "*" / "%2A"
SQUOTE = "'" / "%27"

OPEN  = "(" / "%28"
CLOSE = ")" / "%29"

ALPHA  = [a-z] / [A-Z] / "ä" / "ö" / "ü" / "Ä" / "Ö" / "Ü" / "ß"
DIGIT  = [0-9]
HEXDIG = DIGIT / A_to_F
A_to_F = "A" / "B" / "C" / "D" / "E" / "F" 
DQUOTE = '"'
SP     = ' ' 
HTAB   = '  ' 

`);
function parseSearch(expr) {
    try {
        expr = (0, searchExpressionPreProc_1.default)(expr);
        const searchNode = searchParser.parse(expr);
        return searchNode;
    }
    catch (e) {
        throw (0, utils_1.getOdatafyParserError)('malformed search expression', errors_1.OdatafyQueryOptions.Search);
    }
}
exports.default = {
    /**
     * Parser for search expressions
     * @param expr search expression as string
     * @example searchParser.parse("blue OR green OR red")
     * @returns Abstract Syntax Tree (AST) of type SearchNode
     */
    parse: parseSearch
};