sql-filtrex
Version:
SQL-like expression parser to generate Where Expression for end-users
747 lines (706 loc) • 26 kB
JavaScript
/* parser generated by jison 0.4.18 */
/*
Returns a Parser object of the following structure:
Parser: {
yy: {}
}
Parser.prototype: {
yy: {},
trace: function(),
symbols_: {associative list: name ==> number},
terminals_: {associative list: number ==> name},
productions_: [...],
performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate, $$, _$),
table: [...],
defaultActions: {...},
parseError: function(str, hash),
parse: function(input),
lexer: {
EOF: 1,
parseError: function(str, hash),
setInput: function(input),
input: function(),
unput: function(str),
more: function(),
less: function(n),
pastInput: function(),
upcomingInput: function(),
showPosition: function(),
test_match: function(regex_match_array, rule_index),
next: function(),
lex: function(),
begin: function(condition),
popState: function(),
_currentRules: function(),
topState: function(),
pushState: function(condition),
options: {
ranges: boolean (optional: true ==> token location info will include a .range[] member)
flex: boolean (optional: true ==> flex-like lexing behaviour where the rules are tested exhaustively to find the longest match)
backtrack_lexer: boolean (optional: true ==> lexer regexes are tested in order and for each matching regex the action code is invoked; the lexer terminates the scan when a token is returned by the action code)
},
performAction: function(yy, yy_, $avoiding_name_collisions, YY_START),
rules: [...],
conditions: {associative list: name ==> set},
}
}
token location info (@$, _$, etc.): {
first_line: n,
last_line: n,
first_column: n,
last_column: n,
range: [start_number, end_number] (where the numbers are indexes into the input string, regular zero-based)
}
the parseError function receives a 'hash' object with these members for lexer and parser errors: {
text: (matched text)
token: (the produced terminal token, if any)
line: (yylineno)
}
while parser (grammar) errors will also provide these members, i.e. parser errors deliver a superset of attributes: {
loc: (yylloc)
expected: (string describing the set of expected tokens)
recoverable: (boolean: TRUE when the parser has a error recovery rule available for this particular error)
}
*/
var parser = (function(){
var o=function(k,v,o,l){for(o=o||{},l=k.length;l--;o[k[l]]=v);return o},$V0=[1,3],$V1=[1,7],$V2=[1,5],$V3=[1,6],$V4=[1,8],$V5=[1,9],$V6=[1,11],$V7=[1,12],$V8=[5,6,7,9,12,13,14,16,17,19,20,21,22,23,24,30],$V9=[1,37],$Va=[15,25,26,27,28],$Vb=[5,6,7,9],$Vc=[9,30];
var parser = {trace: function trace () { },
yy: {},
symbols_: {"error":2,"query":3,"expr":4,"EOF":5,"OR":6,"AND":7,"(":8,")":9,"value":10,"comparison_op":11,"LIKE":12,"BETWEEN":13,"IS":14,"NULL":15,"NOT":16,"IN":17,"value_list":18,"EQ":19,"NEQ":20,"GT":21,"LT":22,"GTE":23,"LTE":24,"NUMBER":25,"STRING":26,"SQL_PARAM":27,"IDENTIFIER":28,"value_list_items":29,",":30,"$accept":0,"$end":1},
terminals_: {2:"error",5:"EOF",6:"OR",7:"AND",8:"(",9:")",12:"LIKE",13:"BETWEEN",14:"IS",15:"NULL",16:"NOT",17:"IN",19:"EQ",20:"NEQ",21:"GT",22:"LT",23:"GTE",24:"LTE",25:"NUMBER",26:"STRING",27:"SQL_PARAM",28:"IDENTIFIER",30:","},
productions_: [0,[3,2],[4,3],[4,3],[4,3],[4,3],[4,3],[4,5],[4,3],[4,4],[4,3],[4,4],[11,1],[11,1],[11,1],[11,1],[11,1],[11,1],[10,1],[10,1],[10,1],[10,1],[10,1],[10,3],[10,2],[18,3],[29,1],[29,3]],
performAction: function anonymous(yytext, yyleng, yylineno, yy, yystate /* action[1] */, $$ /* vstack */, _$ /* lstack */, columns, functions, constants) {
/* this == yyval */
var $0 = $$.length - 1;
switch (yystate) {
case 1:
return $$[$0-1];
break;
case 2:
this.$ = { type: 'OR', left: $$[$0-2], right: $$[$0] };
break;
case 3:
this.$ = { type: 'AND', left: $$[$0-2], right: $$[$0] };
break;
case 4: case 25:
this.$ = $$[$0-1];
break;
case 5:
this.$ = { type: 'COMPARE', column: $$[$0-2], op: $$[$0-1], value: $$[$0] };
break;
case 6:
this.$ = { type: 'LIKE', column: $$[$0-2], pattern: $$[$0] };
break;
case 7:
this.$ = { type: 'BETWEEN', column: $$[$0-4], low: $$[$0-2], high: $$[$0] };
break;
case 8:
this.$ = { type: 'IS_NULL', column: $$[$0-2] };
break;
case 9:
this.$ = { type: 'IS_NOT_NULL', column: $$[$0-3] };
break;
case 10:
{ this.$ = { type: 'IN', column: $$[$0-2], values: $$[$0] }; }
break;
case 11:
{ this.$ = { type: 'NOT_IN', column: $$[$0-3], values: $$[$0] }; }
break;
case 12:
this.$ = '=';
break;
case 13:
this.$ = '!=';
break;
case 14:
this.$ = '>';
break;
case 15:
this.$ = '<';
break;
case 16:
this.$ = '>=';
break;
case 17:
this.$ = '<=';
break;
case 18:
this.$ = {type:'NUMBER',value:Number(yytext)};
break;
case 19:
this.$ = {type:'STRING',value:yytext};
break;
case 20:
this.$ = {type:'NULL'};
break;
case 21:
this.$ = {type:'SQL_PARAM',value:yytext};
break;
case 22:
{
if (constants && Object.prototype.hasOwnProperty.call(constants, yytext)) {
this.$ = { type: 'CONST', value: constants[yytext] };
} else if (columns === null || (columns && columns.includes(yytext))) {
this.$ = { type: 'COLUMN', name: yytext };
} else {
throw new Error("Column '" + yytext + "' is not allowed");
}
}
break;
case 23:
{
const fnName = $$[$0-2].toLowerCase();
if (functions && !functions.includes(fnName)) {
throw new Error(`Function '${$$[$0-2]}' is not allowed`);
}
this.$ = { type: 'FUNCTION', name: fnName, args: [] };
}
break;
case 24:
{
const fnName = $$[$0-1].toLowerCase();
if (functions && !functions.includes(fnName)) {
throw new Error(`Function '${$$[$0-1]}' is not allowed`);
}
this.$ = { type: 'FUNCTION', name: fnName, args: $$[$0] };
}
break;
case 26:
this.$ = [$$[$0]];
break;
case 27:
this.$ = $$[$0-2].concat([$$[$0]]);
break;
}
},
table: [{3:1,4:2,8:$V0,10:4,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{1:[3]},{5:[1,10],6:$V6,7:$V7},{4:13,8:$V0,10:4,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{11:14,12:[1,15],13:[1,16],14:[1,17],16:[1,19],17:[1,18],19:[1,20],20:[1,21],21:[1,22],22:[1,23],23:[1,24],24:[1,25]},o($V8,[2,18]),o($V8,[2,19]),o($V8,[2,20]),o($V8,[2,21]),o($V8,[2,22],{18:27,8:[1,26]}),{1:[2,1]},{4:28,8:$V0,10:4,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{4:29,8:$V0,10:4,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{6:$V6,7:$V7,9:[1,30]},{10:31,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{10:32,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{10:33,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},{15:[1,34],16:[1,35]},{8:$V9,18:36},{17:[1,38]},o($Va,[2,12]),o($Va,[2,13]),o($Va,[2,14]),o($Va,[2,15]),o($Va,[2,16]),o($Va,[2,17]),{9:[1,39],10:41,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5,29:40},o($V8,[2,24]),o([5,6,9],[2,2],{7:$V7}),o($Vb,[2,3]),o($Vb,[2,4]),o($Vb,[2,5]),o($Vb,[2,6]),{7:[1,42]},o($Vb,[2,8]),{15:[1,43]},o($Vb,[2,10]),{10:41,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5,29:40},{8:$V9,18:44},o($V8,[2,23]),{9:[1,45],30:[1,46]},o($Vc,[2,26]),{10:47,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},o($Vb,[2,9]),o($Vb,[2,11]),o($V8,[2,25]),{10:48,15:$V1,25:$V2,26:$V3,27:$V4,28:$V5},o($Vb,[2,7]),o($Vc,[2,27])],
defaultActions: {10:[2,1]},
parseError: function parseError (str, hash) {
if (hash.recoverable) {
this.trace(str);
} else {
var error = new Error(str);
error.hash = hash;
throw error;
}
},
parse: function parse(input) {
var self = this, stack = [0], tstack = [], vstack = [null], lstack = [], table = this.table, yytext = '', yylineno = 0, yyleng = 0, recovering = 0, TERROR = 2, EOF = 1;
var args = lstack.slice.call(arguments, 1);
var lexer = Object.create(this.lexer);
var sharedState = { yy: {} };
for (var k in this.yy) {
if (Object.prototype.hasOwnProperty.call(this.yy, k)) {
sharedState.yy[k] = this.yy[k];
}
}
lexer.setInput(input, sharedState.yy);
sharedState.yy.lexer = lexer;
sharedState.yy.parser = this;
if (typeof lexer.yylloc == 'undefined') {
lexer.yylloc = {};
}
var yyloc = lexer.yylloc;
lstack.push(yyloc);
var ranges = lexer.options && lexer.options.ranges;
if (typeof sharedState.yy.parseError === 'function') {
this.parseError = sharedState.yy.parseError;
} else {
this.parseError = Object.getPrototypeOf(this).parseError;
}
function popStack(n) {
stack.length = stack.length - 2 * n;
vstack.length = vstack.length - n;
lstack.length = lstack.length - n;
}
_token_stack:
var lex = function () {
var token;
token = lexer.lex() || EOF;
if (typeof token !== 'number') {
token = self.symbols_[token] || token;
}
return token;
};
var symbol, preErrorSymbol, state, action, a, r, yyval = {}, p, len, newState, expected;
while (true) {
state = stack[stack.length - 1];
if (this.defaultActions[state]) {
action = this.defaultActions[state];
} else {
if (symbol === null || typeof symbol == 'undefined') {
symbol = lex();
}
action = table[state] && table[state][symbol];
}
if (typeof action === 'undefined' || !action.length || !action[0]) {
var errStr = '';
expected = [];
for (p in table[state]) {
if (this.terminals_[p] && p > TERROR) {
expected.push('\'' + this.terminals_[p] + '\'');
}
}
if (lexer.showPosition) {
errStr = 'Parse error on line ' + (yylineno + 1) + ':\n' + lexer.showPosition() + '\nExpecting ' + expected.join(', ') + ', got \'' + (this.terminals_[symbol] || symbol) + '\'';
} else {
errStr = 'Parse error on line ' + (yylineno + 1) + ': Unexpected ' + (symbol == EOF ? 'end of input' : '\'' + (this.terminals_[symbol] || symbol) + '\'');
}
this.parseError(errStr, {
text: lexer.match,
token: this.terminals_[symbol] || symbol,
line: lexer.yylineno,
loc: yyloc,
expected: expected
});
}
if (action[0] instanceof Array && action.length > 1) {
throw new Error('Parse Error: multiple actions possible at state: ' + state + ', token: ' + symbol);
}
switch (action[0]) {
case 1:
stack.push(symbol);
vstack.push(lexer.yytext);
lstack.push(lexer.yylloc);
stack.push(action[1]);
symbol = null;
if (!preErrorSymbol) {
yyleng = lexer.yyleng;
yytext = lexer.yytext;
yylineno = lexer.yylineno;
yyloc = lexer.yylloc;
if (recovering > 0) {
recovering--;
}
} else {
symbol = preErrorSymbol;
preErrorSymbol = null;
}
break;
case 2:
len = this.productions_[action[1]][1];
yyval.$ = vstack[vstack.length - len];
yyval._$ = {
first_line: lstack[lstack.length - (len || 1)].first_line,
last_line: lstack[lstack.length - 1].last_line,
first_column: lstack[lstack.length - (len || 1)].first_column,
last_column: lstack[lstack.length - 1].last_column
};
if (ranges) {
yyval._$.range = [
lstack[lstack.length - (len || 1)].range[0],
lstack[lstack.length - 1].range[1]
];
}
r = this.performAction.apply(yyval, [
yytext,
yyleng,
yylineno,
sharedState.yy,
action[1],
vstack,
lstack
].concat(args));
if (typeof r !== 'undefined') {
return r;
}
if (len) {
stack = stack.slice(0, -1 * len * 2);
vstack = vstack.slice(0, -1 * len);
lstack = lstack.slice(0, -1 * len);
}
stack.push(this.productions_[action[1]][0]);
vstack.push(yyval.$);
lstack.push(yyval._$);
newState = table[stack[stack.length - 2]][stack[stack.length - 1]];
stack.push(newState);
break;
case 3:
return true;
}
}
return true;
}};
/* generated by jison-lex 0.3.4 */
var lexer = (function(){
var lexer = ({
EOF:1,
parseError:function parseError(str, hash) {
if (this.yy.parser) {
this.yy.parser.parseError(str, hash);
} else {
throw new Error(str);
}
},
// resets the lexer, sets new input
setInput:function (input, yy) {
this.yy = yy || this.yy || {};
this._input = input;
this._more = this._backtrack = this.done = false;
this.yylineno = this.yyleng = 0;
this.yytext = this.matched = this.match = '';
this.conditionStack = ['INITIAL'];
this.yylloc = {
first_line: 1,
first_column: 0,
last_line: 1,
last_column: 0
};
if (this.options.ranges) {
this.yylloc.range = [0,0];
}
this.offset = 0;
return this;
},
// consumes and returns one char from the input
input:function () {
var ch = this._input[0];
this.yytext += ch;
this.yyleng++;
this.offset++;
this.match += ch;
this.matched += ch;
var lines = ch.match(/(?:\r\n?|\n).*/g);
if (lines) {
this.yylineno++;
this.yylloc.last_line++;
} else {
this.yylloc.last_column++;
}
if (this.options.ranges) {
this.yylloc.range[1]++;
}
this._input = this._input.slice(1);
return ch;
},
// unshifts one char (or a string) into the input
unput:function (ch) {
var len = ch.length;
var lines = ch.split(/(?:\r\n?|\n)/g);
this._input = ch + this._input;
this.yytext = this.yytext.substr(0, this.yytext.length - len);
//this.yyleng -= len;
this.offset -= len;
var oldLines = this.match.split(/(?:\r\n?|\n)/g);
this.match = this.match.substr(0, this.match.length - 1);
this.matched = this.matched.substr(0, this.matched.length - 1);
if (lines.length - 1) {
this.yylineno -= lines.length - 1;
}
var r = this.yylloc.range;
this.yylloc = {
first_line: this.yylloc.first_line,
last_line: this.yylineno + 1,
first_column: this.yylloc.first_column,
last_column: lines ?
(lines.length === oldLines.length ? this.yylloc.first_column : 0)
+ oldLines[oldLines.length - lines.length].length - lines[0].length :
this.yylloc.first_column - len
};
if (this.options.ranges) {
this.yylloc.range = [r[0], r[0] + this.yyleng - len];
}
this.yyleng = this.yytext.length;
return this;
},
// When called from action, caches matched text and appends it on next action
more:function () {
this._more = true;
return this;
},
// When called from action, signals the lexer that this rule fails to match the input, so the next matching rule (regex) should be tested instead.
reject:function () {
if (this.options.backtrack_lexer) {
this._backtrack = true;
} else {
return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. You can only invoke reject() in the lexer when the lexer is of the backtracking persuasion (options.backtrack_lexer = true).\n' + this.showPosition(), {
text: "",
token: null,
line: this.yylineno
});
}
return this;
},
// retain first n characters of the match
less:function (n) {
this.unput(this.match.slice(n));
},
// displays already matched input, i.e. for error messages
pastInput:function () {
var past = this.matched.substr(0, this.matched.length - this.match.length);
return (past.length > 20 ? '...':'') + past.substr(-20).replace(/\n/g, "");
},
// displays upcoming input, i.e. for error messages
upcomingInput:function () {
var next = this.match;
if (next.length < 20) {
next += this._input.substr(0, 20-next.length);
}
return (next.substr(0,20) + (next.length > 20 ? '...' : '')).replace(/\n/g, "");
},
// displays the character position where the lexing error occurred, i.e. for error messages
showPosition:function () {
var pre = this.pastInput();
var c = new Array(pre.length + 1).join("-");
return pre + this.upcomingInput() + "\n" + c + "^";
},
// test the lexed token: return FALSE when not a match, otherwise return token
test_match:function(match, indexed_rule) {
var token,
lines,
backup;
if (this.options.backtrack_lexer) {
// save context
backup = {
yylineno: this.yylineno,
yylloc: {
first_line: this.yylloc.first_line,
last_line: this.last_line,
first_column: this.yylloc.first_column,
last_column: this.yylloc.last_column
},
yytext: this.yytext,
match: this.match,
matches: this.matches,
matched: this.matched,
yyleng: this.yyleng,
offset: this.offset,
_more: this._more,
_input: this._input,
yy: this.yy,
conditionStack: this.conditionStack.slice(0),
done: this.done
};
if (this.options.ranges) {
backup.yylloc.range = this.yylloc.range.slice(0);
}
}
lines = match[0].match(/(?:\r\n?|\n).*/g);
if (lines) {
this.yylineno += lines.length;
}
this.yylloc = {
first_line: this.yylloc.last_line,
last_line: this.yylineno + 1,
first_column: this.yylloc.last_column,
last_column: lines ?
lines[lines.length - 1].length - lines[lines.length - 1].match(/\r?\n?/)[0].length :
this.yylloc.last_column + match[0].length
};
this.yytext += match[0];
this.match += match[0];
this.matches = match;
this.yyleng = this.yytext.length;
if (this.options.ranges) {
this.yylloc.range = [this.offset, this.offset += this.yyleng];
}
this._more = false;
this._backtrack = false;
this._input = this._input.slice(match[0].length);
this.matched += match[0];
token = this.performAction.call(this, this.yy, this, indexed_rule, this.conditionStack[this.conditionStack.length - 1]);
if (this.done && this._input) {
this.done = false;
}
if (token) {
return token;
} else if (this._backtrack) {
// recover context
for (var k in backup) {
this[k] = backup[k];
}
return false; // rule action called reject() implying the next rule should be tested instead.
}
return false;
},
// return next match in input
next:function () {
if (this.done) {
return this.EOF;
}
if (!this._input) {
this.done = true;
}
var token,
match,
tempMatch,
index;
if (!this._more) {
this.yytext = '';
this.match = '';
}
var rules = this._currentRules();
for (var i = 0; i < rules.length; i++) {
tempMatch = this._input.match(this.rules[rules[i]]);
if (tempMatch && (!match || tempMatch[0].length > match[0].length)) {
match = tempMatch;
index = i;
if (this.options.backtrack_lexer) {
token = this.test_match(tempMatch, rules[i]);
if (token !== false) {
return token;
} else if (this._backtrack) {
match = false;
continue; // rule action called reject() implying a rule MISmatch.
} else {
// else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
return false;
}
} else if (!this.options.flex) {
break;
}
}
}
if (match) {
token = this.test_match(match, rules[index]);
if (token !== false) {
return token;
}
// else: this is a lexer rule which consumes input without producing a token (e.g. whitespace)
return false;
}
if (this._input === "") {
return this.EOF;
} else {
return this.parseError('Lexical error on line ' + (this.yylineno + 1) + '. Unrecognized text.\n' + this.showPosition(), {
text: "",
token: null,
line: this.yylineno
});
}
},
// return next match that has a token
lex:function lex () {
var r = this.next();
if (r) {
return r;
} else {
return this.lex();
}
},
// activates a new lexer condition state (pushes the new lexer condition state onto the condition stack)
begin:function begin (condition) {
this.conditionStack.push(condition);
},
// pop the previously active lexer condition state off the condition stack
popState:function popState () {
var n = this.conditionStack.length - 1;
if (n > 0) {
return this.conditionStack.pop();
} else {
return this.conditionStack[0];
}
},
// produce the lexer rule set which is active for the currently active lexer condition state
_currentRules:function _currentRules () {
if (this.conditionStack.length && this.conditionStack[this.conditionStack.length - 1]) {
return this.conditions[this.conditionStack[this.conditionStack.length - 1]].rules;
} else {
return this.conditions["INITIAL"].rules;
}
},
// return the currently active lexer condition state; when an index argument is provided it produces the N-th previous condition state, if available
topState:function topState (n) {
n = this.conditionStack.length - 1 - Math.abs(n || 0);
if (n >= 0) {
return this.conditionStack[n];
} else {
return "INITIAL";
}
},
// alias for begin(condition)
pushState:function pushState (condition) {
this.begin(condition);
},
// return the number of states currently on the stack
stateStackSize:function stateStackSize() {
return this.conditionStack.length;
},
options: {"case-insensitive":true},
performAction: function anonymous(yy,yy_,$avoiding_name_collisions,YY_START) {
var YYSTATE=YY_START;
switch($avoiding_name_collisions) {
case 0:
break;
case 1:return 23;
break;
case 2:return 24;
break;
case 3:return 20;
break;
case 4:return 19;
break;
case 5:return 12;
break;
case 6:return 20;
break;
case 7:return 21;
break;
case 8:return 22;
break;
case 9:return 7;
break;
case 10:return 6;
break;
case 11:return 7;
break;
case 12:return 6;
break;
case 13:return 16;
break;
case 14:return 13;
break;
case 15:return 14;
break;
case 16:return 15;
break;
case 17:return 17;
break;
case 18:return 8;
break;
case 19:return 9;
break;
case 20:return 30;
break;
case 21:return 27;
break;
case 22:return 25;
break;
case 23:yy_.yytext = yy_.yytext.slice(1, -1); return 26;
break;
case 24:return 28;
break;
case 25:return 5;
break;
case 26:return 'INVALID';
break;
}
},
rules: [/^(?:\s+)/i,/^(?:>=)/i,/^(?:<=)/i,/^(?:!=)/i,/^(?:=)/i,/^(?:~=)/i,/^(?:<>)/i,/^(?:>)/i,/^(?:<)/i,/^(?:&&)/i,/^(?:\|\|)/i,/^(?:and\b)/i,/^(?:or\b)/i,/^(?:not\b)/i,/^(?:between\b)/i,/^(?:is\b)/i,/^(?:null\b)/i,/^(?:in\b)/i,/^(?:\()/i,/^(?:\))/i,/^(?:,)/i,/^(?:[\?@][a-zA-Z0-9_]*)/i,/^(?:[0-9]+(\.[0-9]+)?\b)/i,/^(?:'[^']*')/i,/^(?:[a-zA-Z_][a-zA-Z0-9_]*\b)/i,/^(?:$)/i,/^(?:.)/i],
conditions: {"INITIAL":{"rules":[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26],"inclusive":true}}
});
return lexer;
})();
parser.lexer = lexer;
function Parser () {
this.yy = {};
}
Parser.prototype = parser;parser.Parser = Parser;
return new Parser;
})();
if (typeof require !== 'undefined' && typeof exports !== 'undefined') {
exports.parser = parser;
exports.Parser = parser.Parser;
exports.parse = function () { return parser.parse.apply(parser, arguments); };
exports.main = function commonjsMain (args) {
if (!args[1]) {
console.log('Usage: '+args[0]+' FILE');
process.exit(1);
}
var source = require('fs').readFileSync(require('path').normalize(args[1]), "utf8");
return exports.parser.parse(source);
};
if (typeof module !== 'undefined' && require.main === module) {
exports.main(process.argv.slice(1));
}
}