'use strict';
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function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
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var lexer = require('./lexer');
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var nodes = require('./nodes');
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var Obj = require('./object').Obj;
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var lib = require('./lib');
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var Parser =
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/*#__PURE__*/
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function (_Obj) {
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_inheritsLoose(Parser, _Obj);
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function Parser() {
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return _Obj.apply(this, arguments) || this;
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}
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var _proto = Parser.prototype;
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_proto.init = function init(tokens) {
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this.tokens = tokens;
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this.peeked = null;
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this.breakOnBlocks = null;
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this.dropLeadingWhitespace = false;
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this.extensions = [];
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};
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_proto.nextToken = function nextToken(withWhitespace) {
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var tok;
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if (this.peeked) {
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if (!withWhitespace && this.peeked.type === lexer.TOKEN_WHITESPACE) {
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this.peeked = null;
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} else {
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tok = this.peeked;
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this.peeked = null;
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return tok;
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}
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}
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tok = this.tokens.nextToken();
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if (!withWhitespace) {
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while (tok && tok.type === lexer.TOKEN_WHITESPACE) {
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tok = this.tokens.nextToken();
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}
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}
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return tok;
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};
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_proto.peekToken = function peekToken() {
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this.peeked = this.peeked || this.nextToken();
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return this.peeked;
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};
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_proto.pushToken = function pushToken(tok) {
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if (this.peeked) {
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throw new Error('pushToken: can only push one token on between reads');
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}
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this.peeked = tok;
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};
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_proto.error = function error(msg, lineno, colno) {
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if (lineno === undefined || colno === undefined) {
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var tok = this.peekToken() || {};
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lineno = tok.lineno;
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colno = tok.colno;
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}
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if (lineno !== undefined) {
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lineno += 1;
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}
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if (colno !== undefined) {
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colno += 1;
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}
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return new lib.TemplateError(msg, lineno, colno);
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};
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_proto.fail = function fail(msg, lineno, colno) {
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throw this.error(msg, lineno, colno);
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};
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_proto.skip = function skip(type) {
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var tok = this.nextToken();
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if (!tok || tok.type !== type) {
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this.pushToken(tok);
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return false;
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}
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return true;
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};
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_proto.expect = function expect(type) {
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var tok = this.nextToken();
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if (tok.type !== type) {
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this.fail('expected ' + type + ', got ' + tok.type, tok.lineno, tok.colno);
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}
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return tok;
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};
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_proto.skipValue = function skipValue(type, val) {
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var tok = this.nextToken();
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if (!tok || tok.type !== type || tok.value !== val) {
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this.pushToken(tok);
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return false;
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}
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return true;
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};
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_proto.skipSymbol = function skipSymbol(val) {
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return this.skipValue(lexer.TOKEN_SYMBOL, val);
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};
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_proto.advanceAfterBlockEnd = function advanceAfterBlockEnd(name) {
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var tok;
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if (!name) {
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tok = this.peekToken();
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if (!tok) {
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this.fail('unexpected end of file');
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}
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if (tok.type !== lexer.TOKEN_SYMBOL) {
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this.fail('advanceAfterBlockEnd: expected symbol token or ' + 'explicit name to be passed');
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}
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name = this.nextToken().value;
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}
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tok = this.nextToken();
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if (tok && tok.type === lexer.TOKEN_BLOCK_END) {
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if (tok.value.charAt(0) === '-') {
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this.dropLeadingWhitespace = true;
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}
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} else {
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this.fail('expected block end in ' + name + ' statement');
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}
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return tok;
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};
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_proto.advanceAfterVariableEnd = function advanceAfterVariableEnd() {
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var tok = this.nextToken();
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if (tok && tok.type === lexer.TOKEN_VARIABLE_END) {
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this.dropLeadingWhitespace = tok.value.charAt(tok.value.length - this.tokens.tags.VARIABLE_END.length - 1) === '-';
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} else {
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this.pushToken(tok);
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this.fail('expected variable end');
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}
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};
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_proto.parseFor = function parseFor() {
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var forTok = this.peekToken();
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var node;
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var endBlock;
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if (this.skipSymbol('for')) {
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node = new nodes.For(forTok.lineno, forTok.colno);
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endBlock = 'endfor';
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} else if (this.skipSymbol('asyncEach')) {
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node = new nodes.AsyncEach(forTok.lineno, forTok.colno);
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endBlock = 'endeach';
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} else if (this.skipSymbol('asyncAll')) {
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node = new nodes.AsyncAll(forTok.lineno, forTok.colno);
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endBlock = 'endall';
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} else {
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this.fail('parseFor: expected for{Async}', forTok.lineno, forTok.colno);
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}
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node.name = this.parsePrimary();
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if (!(node.name instanceof nodes.Symbol)) {
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this.fail('parseFor: variable name expected for loop');
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}
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var type = this.peekToken().type;
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if (type === lexer.TOKEN_COMMA) {
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// key/value iteration
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var key = node.name;
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node.name = new nodes.Array(key.lineno, key.colno);
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node.name.addChild(key);
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while (this.skip(lexer.TOKEN_COMMA)) {
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var prim = this.parsePrimary();
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node.name.addChild(prim);
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}
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}
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if (!this.skipSymbol('in')) {
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this.fail('parseFor: expected "in" keyword for loop', forTok.lineno, forTok.colno);
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}
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node.arr = this.parseExpression();
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this.advanceAfterBlockEnd(forTok.value);
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node.body = this.parseUntilBlocks(endBlock, 'else');
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if (this.skipSymbol('else')) {
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this.advanceAfterBlockEnd('else');
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node.else_ = this.parseUntilBlocks(endBlock);
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}
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this.advanceAfterBlockEnd();
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return node;
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};
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_proto.parseMacro = function parseMacro() {
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var macroTok = this.peekToken();
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if (!this.skipSymbol('macro')) {
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this.fail('expected macro');
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}
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var name = this.parsePrimary(true);
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var args = this.parseSignature();
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var node = new nodes.Macro(macroTok.lineno, macroTok.colno, name, args);
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this.advanceAfterBlockEnd(macroTok.value);
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node.body = this.parseUntilBlocks('endmacro');
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this.advanceAfterBlockEnd();
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return node;
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};
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_proto.parseCall = function parseCall() {
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// a call block is parsed as a normal FunCall, but with an added
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// 'caller' kwarg which is a Caller node.
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var callTok = this.peekToken();
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if (!this.skipSymbol('call')) {
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this.fail('expected call');
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}
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var callerArgs = this.parseSignature(true) || new nodes.NodeList();
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var macroCall = this.parsePrimary();
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this.advanceAfterBlockEnd(callTok.value);
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var body = this.parseUntilBlocks('endcall');
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this.advanceAfterBlockEnd();
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var callerName = new nodes.Symbol(callTok.lineno, callTok.colno, 'caller');
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var callerNode = new nodes.Caller(callTok.lineno, callTok.colno, callerName, callerArgs, body); // add the additional caller kwarg, adding kwargs if necessary
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var args = macroCall.args.children;
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if (!(args[args.length - 1] instanceof nodes.KeywordArgs)) {
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args.push(new nodes.KeywordArgs());
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}
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var kwargs = args[args.length - 1];
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kwargs.addChild(new nodes.Pair(callTok.lineno, callTok.colno, callerName, callerNode));
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return new nodes.Output(callTok.lineno, callTok.colno, [macroCall]);
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};
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_proto.parseWithContext = function parseWithContext() {
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var tok = this.peekToken();
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var withContext = null;
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if (this.skipSymbol('with')) {
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withContext = true;
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} else if (this.skipSymbol('without')) {
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withContext = false;
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}
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if (withContext !== null) {
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if (!this.skipSymbol('context')) {
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this.fail('parseFrom: expected context after with/without', tok.lineno, tok.colno);
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}
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}
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return withContext;
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};
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_proto.parseImport = function parseImport() {
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var importTok = this.peekToken();
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if (!this.skipSymbol('import')) {
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this.fail('parseImport: expected import', importTok.lineno, importTok.colno);
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}
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var template = this.parseExpression();
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if (!this.skipSymbol('as')) {
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this.fail('parseImport: expected "as" keyword', importTok.lineno, importTok.colno);
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}
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var target = this.parseExpression();
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var withContext = this.parseWithContext();
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var node = new nodes.Import(importTok.lineno, importTok.colno, template, target, withContext);
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this.advanceAfterBlockEnd(importTok.value);
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return node;
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};
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_proto.parseFrom = function parseFrom() {
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var fromTok = this.peekToken();
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if (!this.skipSymbol('from')) {
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this.fail('parseFrom: expected from');
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}
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var template = this.parseExpression();
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if (!this.skipSymbol('import')) {
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this.fail('parseFrom: expected import', fromTok.lineno, fromTok.colno);
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}
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var names = new nodes.NodeList();
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var withContext;
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while (1) {
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// eslint-disable-line no-constant-condition
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var nextTok = this.peekToken();
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if (nextTok.type === lexer.TOKEN_BLOCK_END) {
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if (!names.children.length) {
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this.fail('parseFrom: Expected at least one import name', fromTok.lineno, fromTok.colno);
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} // Since we are manually advancing past the block end,
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// need to keep track of whitespace control (normally
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// this is done in `advanceAfterBlockEnd`
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if (nextTok.value.charAt(0) === '-') {
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this.dropLeadingWhitespace = true;
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}
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this.nextToken();
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break;
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}
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if (names.children.length > 0 && !this.skip(lexer.TOKEN_COMMA)) {
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this.fail('parseFrom: expected comma', fromTok.lineno, fromTok.colno);
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}
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var name = this.parsePrimary();
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if (name.value.charAt(0) === '_') {
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this.fail('parseFrom: names starting with an underscore cannot be imported', name.lineno, name.colno);
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}
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if (this.skipSymbol('as')) {
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var alias = this.parsePrimary();
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names.addChild(new nodes.Pair(name.lineno, name.colno, name, alias));
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} else {
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names.addChild(name);
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}
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withContext = this.parseWithContext();
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}
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return new nodes.FromImport(fromTok.lineno, fromTok.colno, template, names, withContext);
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};
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_proto.parseBlock = function parseBlock() {
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var tag = this.peekToken();
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if (!this.skipSymbol('block')) {
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this.fail('parseBlock: expected block', tag.lineno, tag.colno);
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}
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var node = new nodes.Block(tag.lineno, tag.colno);
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node.name = this.parsePrimary();
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if (!(node.name instanceof nodes.Symbol)) {
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this.fail('parseBlock: variable name expected', tag.lineno, tag.colno);
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}
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this.advanceAfterBlockEnd(tag.value);
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node.body = this.parseUntilBlocks('endblock');
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this.skipSymbol('endblock');
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this.skipSymbol(node.name.value);
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var tok = this.peekToken();
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if (!tok) {
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this.fail('parseBlock: expected endblock, got end of file');
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}
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this.advanceAfterBlockEnd(tok.value);
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return node;
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};
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_proto.parseExtends = function parseExtends() {
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var tagName = 'extends';
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var tag = this.peekToken();
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if (!this.skipSymbol(tagName)) {
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this.fail('parseTemplateRef: expected ' + tagName);
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}
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var node = new nodes.Extends(tag.lineno, tag.colno);
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node.template = this.parseExpression();
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this.advanceAfterBlockEnd(tag.value);
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return node;
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};
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_proto.parseInclude = function parseInclude() {
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var tagName = 'include';
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var tag = this.peekToken();
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if (!this.skipSymbol(tagName)) {
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this.fail('parseInclude: expected ' + tagName);
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}
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var node = new nodes.Include(tag.lineno, tag.colno);
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node.template = this.parseExpression();
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if (this.skipSymbol('ignore') && this.skipSymbol('missing')) {
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node.ignoreMissing = true;
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}
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this.advanceAfterBlockEnd(tag.value);
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return node;
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};
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_proto.parseIf = function parseIf() {
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var tag = this.peekToken();
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var node;
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if (this.skipSymbol('if') || this.skipSymbol('elif') || this.skipSymbol('elseif')) {
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node = new nodes.If(tag.lineno, tag.colno);
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} else if (this.skipSymbol('ifAsync')) {
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node = new nodes.IfAsync(tag.lineno, tag.colno);
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} else {
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this.fail('parseIf: expected if, elif, or elseif', tag.lineno, tag.colno);
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}
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node.cond = this.parseExpression();
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this.advanceAfterBlockEnd(tag.value);
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node.body = this.parseUntilBlocks('elif', 'elseif', 'else', 'endif');
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var tok = this.peekToken();
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switch (tok && tok.value) {
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case 'elseif':
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case 'elif':
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node.else_ = this.parseIf();
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break;
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case 'else':
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this.advanceAfterBlockEnd();
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node.else_ = this.parseUntilBlocks('endif');
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this.advanceAfterBlockEnd();
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break;
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case 'endif':
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node.else_ = null;
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this.advanceAfterBlockEnd();
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break;
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default:
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this.fail('parseIf: expected elif, else, or endif, got end of file');
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}
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return node;
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};
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_proto.parseSet = function parseSet() {
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var tag = this.peekToken();
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if (!this.skipSymbol('set')) {
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this.fail('parseSet: expected set', tag.lineno, tag.colno);
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}
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var node = new nodes.Set(tag.lineno, tag.colno, []);
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var target;
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while (target = this.parsePrimary()) {
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node.targets.push(target);
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if (!this.skip(lexer.TOKEN_COMMA)) {
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break;
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}
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}
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if (!this.skipValue(lexer.TOKEN_OPERATOR, '=')) {
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if (!this.skip(lexer.TOKEN_BLOCK_END)) {
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this.fail('parseSet: expected = or block end in set tag', tag.lineno, tag.colno);
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} else {
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node.body = new nodes.Capture(tag.lineno, tag.colno, this.parseUntilBlocks('endset'));
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node.value = null;
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this.advanceAfterBlockEnd();
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}
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} else {
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node.value = this.parseExpression();
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this.advanceAfterBlockEnd(tag.value);
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}
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return node;
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};
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_proto.parseSwitch = function parseSwitch() {
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/*
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* Store the tag names in variables in case someone ever wants to
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* customize this.
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*/
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var switchStart = 'switch';
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var switchEnd = 'endswitch';
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var caseStart = 'case';
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var caseDefault = 'default'; // Get the switch tag.
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var tag = this.peekToken(); // fail early if we get some unexpected tag.
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if (!this.skipSymbol(switchStart) && !this.skipSymbol(caseStart) && !this.skipSymbol(caseDefault)) {
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this.fail('parseSwitch: expected "switch," "case" or "default"', tag.lineno, tag.colno);
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} // parse the switch expression
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var expr = this.parseExpression(); // advance until a start of a case, a default case or an endswitch.
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this.advanceAfterBlockEnd(switchStart);
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this.parseUntilBlocks(caseStart, caseDefault, switchEnd); // this is the first case. it could also be an endswitch, we'll check.
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var tok = this.peekToken(); // create new variables for our cases and default case.
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var cases = [];
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var defaultCase; // while we're dealing with new cases nodes...
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do {
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// skip the start symbol and get the case expression
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this.skipSymbol(caseStart);
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var cond = this.parseExpression();
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this.advanceAfterBlockEnd(switchStart); // get the body of the case node and add it to the array of cases.
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var body = this.parseUntilBlocks(caseStart, caseDefault, switchEnd);
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cases.push(new nodes.Case(tok.line, tok.col, cond, body)); // get our next case
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tok = this.peekToken();
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} while (tok && tok.value === caseStart); // we either have a default case or a switch end.
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switch (tok.value) {
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case caseDefault:
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this.advanceAfterBlockEnd();
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defaultCase = this.parseUntilBlocks(switchEnd);
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this.advanceAfterBlockEnd();
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break;
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case switchEnd:
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this.advanceAfterBlockEnd();
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break;
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default:
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// otherwise bail because EOF
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this.fail('parseSwitch: expected "case," "default" or "endswitch," got EOF.');
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} // and return the switch node.
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return new nodes.Switch(tag.lineno, tag.colno, expr, cases, defaultCase);
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};
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_proto.parseStatement = function parseStatement() {
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var tok = this.peekToken();
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var node;
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if (tok.type !== lexer.TOKEN_SYMBOL) {
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this.fail('tag name expected', tok.lineno, tok.colno);
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}
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if (this.breakOnBlocks && lib.indexOf(this.breakOnBlocks, tok.value) !== -1) {
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return null;
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}
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switch (tok.value) {
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case 'raw':
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return this.parseRaw();
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case 'verbatim':
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return this.parseRaw('verbatim');
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case 'if':
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case 'ifAsync':
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return this.parseIf();
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case 'for':
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case 'asyncEach':
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case 'asyncAll':
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return this.parseFor();
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case 'block':
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return this.parseBlock();
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case 'extends':
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return this.parseExtends();
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case 'include':
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return this.parseInclude();
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case 'set':
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return this.parseSet();
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case 'macro':
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return this.parseMacro();
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case 'call':
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return this.parseCall();
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case 'import':
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return this.parseImport();
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case 'from':
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return this.parseFrom();
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case 'filter':
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return this.parseFilterStatement();
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case 'switch':
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return this.parseSwitch();
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default:
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if (this.extensions.length) {
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for (var i = 0; i < this.extensions.length; i++) {
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var ext = this.extensions[i];
|
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if (lib.indexOf(ext.tags || [], tok.value) !== -1) {
|
return ext.parse(this, nodes, lexer);
|
}
|
}
|
}
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this.fail('unknown block tag: ' + tok.value, tok.lineno, tok.colno);
|
}
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return node;
|
};
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|
_proto.parseRaw = function parseRaw(tagName) {
|
tagName = tagName || 'raw';
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var endTagName = 'end' + tagName; // Look for upcoming raw blocks (ignore all other kinds of blocks)
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var rawBlockRegex = new RegExp('([\\s\\S]*?){%\\s*(' + tagName + '|' + endTagName + ')\\s*(?=%})%}');
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var rawLevel = 1;
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var str = '';
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var matches = null; // Skip opening raw token
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// Keep this token to track line and column numbers
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var begun = this.advanceAfterBlockEnd(); // Exit when there's nothing to match
|
// or when we've found the matching "endraw" block
|
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while ((matches = this.tokens._extractRegex(rawBlockRegex)) && rawLevel > 0) {
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var all = matches[0];
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var pre = matches[1];
|
var blockName = matches[2]; // Adjust rawlevel
|
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if (blockName === tagName) {
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rawLevel += 1;
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} else if (blockName === endTagName) {
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rawLevel -= 1;
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} // Add to str
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|
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if (rawLevel === 0) {
|
// We want to exclude the last "endraw"
|
str += pre; // Move tokenizer to beginning of endraw block
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this.tokens.backN(all.length - pre.length);
|
} else {
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str += all;
|
}
|
}
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return new nodes.Output(begun.lineno, begun.colno, [new nodes.TemplateData(begun.lineno, begun.colno, str)]);
|
};
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_proto.parsePostfix = function parsePostfix(node) {
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var lookup;
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var tok = this.peekToken();
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while (tok) {
|
if (tok.type === lexer.TOKEN_LEFT_PAREN) {
|
// Function call
|
node = new nodes.FunCall(tok.lineno, tok.colno, node, this.parseSignature());
|
} else if (tok.type === lexer.TOKEN_LEFT_BRACKET) {
|
// Reference
|
lookup = this.parseAggregate();
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|
if (lookup.children.length > 1) {
|
this.fail('invalid index');
|
}
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node = new nodes.LookupVal(tok.lineno, tok.colno, node, lookup.children[0]);
|
} else if (tok.type === lexer.TOKEN_OPERATOR && tok.value === '.') {
|
// Reference
|
this.nextToken();
|
var val = this.nextToken();
|
|
if (val.type !== lexer.TOKEN_SYMBOL) {
|
this.fail('expected name as lookup value, got ' + val.value, val.lineno, val.colno);
|
} // Make a literal string because it's not a variable
|
// reference
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|
lookup = new nodes.Literal(val.lineno, val.colno, val.value);
|
node = new nodes.LookupVal(tok.lineno, tok.colno, node, lookup);
|
} else {
|
break;
|
}
|
|
tok = this.peekToken();
|
}
|
|
return node;
|
};
|
|
_proto.parseExpression = function parseExpression() {
|
var node = this.parseInlineIf();
|
return node;
|
};
|
|
_proto.parseInlineIf = function parseInlineIf() {
|
var node = this.parseOr();
|
|
if (this.skipSymbol('if')) {
|
var condNode = this.parseOr();
|
var bodyNode = node;
|
node = new nodes.InlineIf(node.lineno, node.colno);
|
node.body = bodyNode;
|
node.cond = condNode;
|
|
if (this.skipSymbol('else')) {
|
node.else_ = this.parseOr();
|
} else {
|
node.else_ = null;
|
}
|
}
|
|
return node;
|
};
|
|
_proto.parseOr = function parseOr() {
|
var node = this.parseAnd();
|
|
while (this.skipSymbol('or')) {
|
var node2 = this.parseAnd();
|
node = new nodes.Or(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseAnd = function parseAnd() {
|
var node = this.parseNot();
|
|
while (this.skipSymbol('and')) {
|
var node2 = this.parseNot();
|
node = new nodes.And(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseNot = function parseNot() {
|
var tok = this.peekToken();
|
|
if (this.skipSymbol('not')) {
|
return new nodes.Not(tok.lineno, tok.colno, this.parseNot());
|
}
|
|
return this.parseIn();
|
};
|
|
_proto.parseIn = function parseIn() {
|
var node = this.parseIs();
|
|
while (1) {
|
// eslint-disable-line no-constant-condition
|
// check if the next token is 'not'
|
var tok = this.nextToken();
|
|
if (!tok) {
|
break;
|
}
|
|
var invert = tok.type === lexer.TOKEN_SYMBOL && tok.value === 'not'; // if it wasn't 'not', put it back
|
|
if (!invert) {
|
this.pushToken(tok);
|
}
|
|
if (this.skipSymbol('in')) {
|
var node2 = this.parseIs();
|
node = new nodes.In(node.lineno, node.colno, node, node2);
|
|
if (invert) {
|
node = new nodes.Not(node.lineno, node.colno, node);
|
}
|
} else {
|
// if we'd found a 'not' but this wasn't an 'in', put back the 'not'
|
if (invert) {
|
this.pushToken(tok);
|
}
|
|
break;
|
}
|
}
|
|
return node;
|
} // I put this right after "in" in the operator precedence stack. That can
|
// obviously be changed to be closer to Jinja.
|
;
|
|
_proto.parseIs = function parseIs() {
|
var node = this.parseCompare(); // look for an is
|
|
if (this.skipSymbol('is')) {
|
// look for a not
|
var not = this.skipSymbol('not'); // get the next node
|
|
var node2 = this.parseCompare(); // create an Is node using the next node and the info from our Is node.
|
|
node = new nodes.Is(node.lineno, node.colno, node, node2); // if we have a Not, create a Not node from our Is node.
|
|
if (not) {
|
node = new nodes.Not(node.lineno, node.colno, node);
|
}
|
} // return the node.
|
|
|
return node;
|
};
|
|
_proto.parseCompare = function parseCompare() {
|
var compareOps = ['==', '===', '!=', '!==', '<', '>', '<=', '>='];
|
var expr = this.parseConcat();
|
var ops = [];
|
|
while (1) {
|
// eslint-disable-line no-constant-condition
|
var tok = this.nextToken();
|
|
if (!tok) {
|
break;
|
} else if (compareOps.indexOf(tok.value) !== -1) {
|
ops.push(new nodes.CompareOperand(tok.lineno, tok.colno, this.parseConcat(), tok.value));
|
} else {
|
this.pushToken(tok);
|
break;
|
}
|
}
|
|
if (ops.length) {
|
return new nodes.Compare(ops[0].lineno, ops[0].colno, expr, ops);
|
} else {
|
return expr;
|
}
|
} // finds the '~' for string concatenation
|
;
|
|
_proto.parseConcat = function parseConcat() {
|
var node = this.parseAdd();
|
|
while (this.skipValue(lexer.TOKEN_TILDE, '~')) {
|
var node2 = this.parseAdd();
|
node = new nodes.Concat(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseAdd = function parseAdd() {
|
var node = this.parseSub();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '+')) {
|
var node2 = this.parseSub();
|
node = new nodes.Add(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseSub = function parseSub() {
|
var node = this.parseMul();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '-')) {
|
var node2 = this.parseMul();
|
node = new nodes.Sub(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseMul = function parseMul() {
|
var node = this.parseDiv();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '*')) {
|
var node2 = this.parseDiv();
|
node = new nodes.Mul(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseDiv = function parseDiv() {
|
var node = this.parseFloorDiv();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '/')) {
|
var node2 = this.parseFloorDiv();
|
node = new nodes.Div(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseFloorDiv = function parseFloorDiv() {
|
var node = this.parseMod();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '//')) {
|
var node2 = this.parseMod();
|
node = new nodes.FloorDiv(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseMod = function parseMod() {
|
var node = this.parsePow();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '%')) {
|
var node2 = this.parsePow();
|
node = new nodes.Mod(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parsePow = function parsePow() {
|
var node = this.parseUnary();
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '**')) {
|
var node2 = this.parseUnary();
|
node = new nodes.Pow(node.lineno, node.colno, node, node2);
|
}
|
|
return node;
|
};
|
|
_proto.parseUnary = function parseUnary(noFilters) {
|
var tok = this.peekToken();
|
var node;
|
|
if (this.skipValue(lexer.TOKEN_OPERATOR, '-')) {
|
node = new nodes.Neg(tok.lineno, tok.colno, this.parseUnary(true));
|
} else if (this.skipValue(lexer.TOKEN_OPERATOR, '+')) {
|
node = new nodes.Pos(tok.lineno, tok.colno, this.parseUnary(true));
|
} else {
|
node = this.parsePrimary();
|
}
|
|
if (!noFilters) {
|
node = this.parseFilter(node);
|
}
|
|
return node;
|
};
|
|
_proto.parsePrimary = function parsePrimary(noPostfix) {
|
var tok = this.nextToken();
|
var val;
|
var node = null;
|
|
if (!tok) {
|
this.fail('expected expression, got end of file');
|
} else if (tok.type === lexer.TOKEN_STRING) {
|
val = tok.value;
|
} else if (tok.type === lexer.TOKEN_INT) {
|
val = parseInt(tok.value, 10);
|
} else if (tok.type === lexer.TOKEN_FLOAT) {
|
val = parseFloat(tok.value);
|
} else if (tok.type === lexer.TOKEN_BOOLEAN) {
|
if (tok.value === 'true') {
|
val = true;
|
} else if (tok.value === 'false') {
|
val = false;
|
} else {
|
this.fail('invalid boolean: ' + tok.value, tok.lineno, tok.colno);
|
}
|
} else if (tok.type === lexer.TOKEN_NONE) {
|
val = null;
|
} else if (tok.type === lexer.TOKEN_REGEX) {
|
val = new RegExp(tok.value.body, tok.value.flags);
|
}
|
|
if (val !== undefined) {
|
node = new nodes.Literal(tok.lineno, tok.colno, val);
|
} else if (tok.type === lexer.TOKEN_SYMBOL) {
|
node = new nodes.Symbol(tok.lineno, tok.colno, tok.value);
|
} else {
|
// See if it's an aggregate type, we need to push the
|
// current delimiter token back on
|
this.pushToken(tok);
|
node = this.parseAggregate();
|
}
|
|
if (!noPostfix) {
|
node = this.parsePostfix(node);
|
}
|
|
if (node) {
|
return node;
|
} else {
|
throw this.error("unexpected token: " + tok.value, tok.lineno, tok.colno);
|
}
|
};
|
|
_proto.parseFilterName = function parseFilterName() {
|
var tok = this.expect(lexer.TOKEN_SYMBOL);
|
var name = tok.value;
|
|
while (this.skipValue(lexer.TOKEN_OPERATOR, '.')) {
|
name += '.' + this.expect(lexer.TOKEN_SYMBOL).value;
|
}
|
|
return new nodes.Symbol(tok.lineno, tok.colno, name);
|
};
|
|
_proto.parseFilterArgs = function parseFilterArgs(node) {
|
if (this.peekToken().type === lexer.TOKEN_LEFT_PAREN) {
|
// Get a FunCall node and add the parameters to the
|
// filter
|
var call = this.parsePostfix(node);
|
return call.args.children;
|
}
|
|
return [];
|
};
|
|
_proto.parseFilter = function parseFilter(node) {
|
while (this.skip(lexer.TOKEN_PIPE)) {
|
var name = this.parseFilterName();
|
node = new nodes.Filter(name.lineno, name.colno, name, new nodes.NodeList(name.lineno, name.colno, [node].concat(this.parseFilterArgs(node))));
|
}
|
|
return node;
|
};
|
|
_proto.parseFilterStatement = function parseFilterStatement() {
|
var filterTok = this.peekToken();
|
|
if (!this.skipSymbol('filter')) {
|
this.fail('parseFilterStatement: expected filter');
|
}
|
|
var name = this.parseFilterName();
|
var args = this.parseFilterArgs(name);
|
this.advanceAfterBlockEnd(filterTok.value);
|
var body = new nodes.Capture(name.lineno, name.colno, this.parseUntilBlocks('endfilter'));
|
this.advanceAfterBlockEnd();
|
var node = new nodes.Filter(name.lineno, name.colno, name, new nodes.NodeList(name.lineno, name.colno, [body].concat(args)));
|
return new nodes.Output(name.lineno, name.colno, [node]);
|
};
|
|
_proto.parseAggregate = function parseAggregate() {
|
var tok = this.nextToken();
|
var node;
|
|
switch (tok.type) {
|
case lexer.TOKEN_LEFT_PAREN:
|
node = new nodes.Group(tok.lineno, tok.colno);
|
break;
|
|
case lexer.TOKEN_LEFT_BRACKET:
|
node = new nodes.Array(tok.lineno, tok.colno);
|
break;
|
|
case lexer.TOKEN_LEFT_CURLY:
|
node = new nodes.Dict(tok.lineno, tok.colno);
|
break;
|
|
default:
|
return null;
|
}
|
|
while (1) {
|
// eslint-disable-line no-constant-condition
|
var type = this.peekToken().type;
|
|
if (type === lexer.TOKEN_RIGHT_PAREN || type === lexer.TOKEN_RIGHT_BRACKET || type === lexer.TOKEN_RIGHT_CURLY) {
|
this.nextToken();
|
break;
|
}
|
|
if (node.children.length > 0) {
|
if (!this.skip(lexer.TOKEN_COMMA)) {
|
this.fail('parseAggregate: expected comma after expression', tok.lineno, tok.colno);
|
}
|
}
|
|
if (node instanceof nodes.Dict) {
|
// TODO: check for errors
|
var key = this.parsePrimary(); // We expect a key/value pair for dicts, separated by a
|
// colon
|
|
if (!this.skip(lexer.TOKEN_COLON)) {
|
this.fail('parseAggregate: expected colon after dict key', tok.lineno, tok.colno);
|
} // TODO: check for errors
|
|
|
var value = this.parseExpression();
|
node.addChild(new nodes.Pair(key.lineno, key.colno, key, value));
|
} else {
|
// TODO: check for errors
|
var expr = this.parseExpression();
|
node.addChild(expr);
|
}
|
}
|
|
return node;
|
};
|
|
_proto.parseSignature = function parseSignature(tolerant, noParens) {
|
var tok = this.peekToken();
|
|
if (!noParens && tok.type !== lexer.TOKEN_LEFT_PAREN) {
|
if (tolerant) {
|
return null;
|
} else {
|
this.fail('expected arguments', tok.lineno, tok.colno);
|
}
|
}
|
|
if (tok.type === lexer.TOKEN_LEFT_PAREN) {
|
tok = this.nextToken();
|
}
|
|
var args = new nodes.NodeList(tok.lineno, tok.colno);
|
var kwargs = new nodes.KeywordArgs(tok.lineno, tok.colno);
|
var checkComma = false;
|
|
while (1) {
|
// eslint-disable-line no-constant-condition
|
tok = this.peekToken();
|
|
if (!noParens && tok.type === lexer.TOKEN_RIGHT_PAREN) {
|
this.nextToken();
|
break;
|
} else if (noParens && tok.type === lexer.TOKEN_BLOCK_END) {
|
break;
|
}
|
|
if (checkComma && !this.skip(lexer.TOKEN_COMMA)) {
|
this.fail('parseSignature: expected comma after expression', tok.lineno, tok.colno);
|
} else {
|
var arg = this.parseExpression();
|
|
if (this.skipValue(lexer.TOKEN_OPERATOR, '=')) {
|
kwargs.addChild(new nodes.Pair(arg.lineno, arg.colno, arg, this.parseExpression()));
|
} else {
|
args.addChild(arg);
|
}
|
}
|
|
checkComma = true;
|
}
|
|
if (kwargs.children.length) {
|
args.addChild(kwargs);
|
}
|
|
return args;
|
};
|
|
_proto.parseUntilBlocks = function parseUntilBlocks() {
|
var prev = this.breakOnBlocks;
|
|
for (var _len = arguments.length, blockNames = new Array(_len), _key = 0; _key < _len; _key++) {
|
blockNames[_key] = arguments[_key];
|
}
|
|
this.breakOnBlocks = blockNames;
|
var ret = this.parse();
|
this.breakOnBlocks = prev;
|
return ret;
|
};
|
|
_proto.parseNodes = function parseNodes() {
|
var tok;
|
var buf = [];
|
|
while (tok = this.nextToken()) {
|
if (tok.type === lexer.TOKEN_DATA) {
|
var data = tok.value;
|
var nextToken = this.peekToken();
|
var nextVal = nextToken && nextToken.value; // If the last token has "-" we need to trim the
|
// leading whitespace of the data. This is marked with
|
// the `dropLeadingWhitespace` variable.
|
|
if (this.dropLeadingWhitespace) {
|
// TODO: this could be optimized (don't use regex)
|
data = data.replace(/^\s*/, '');
|
this.dropLeadingWhitespace = false;
|
} // Same for the succeeding block start token
|
|
|
if (nextToken && (nextToken.type === lexer.TOKEN_BLOCK_START && nextVal.charAt(nextVal.length - 1) === '-' || nextToken.type === lexer.TOKEN_VARIABLE_START && nextVal.charAt(this.tokens.tags.VARIABLE_START.length) === '-' || nextToken.type === lexer.TOKEN_COMMENT && nextVal.charAt(this.tokens.tags.COMMENT_START.length) === '-')) {
|
// TODO: this could be optimized (don't use regex)
|
data = data.replace(/\s*$/, '');
|
}
|
|
buf.push(new nodes.Output(tok.lineno, tok.colno, [new nodes.TemplateData(tok.lineno, tok.colno, data)]));
|
} else if (tok.type === lexer.TOKEN_BLOCK_START) {
|
this.dropLeadingWhitespace = false;
|
var n = this.parseStatement();
|
|
if (!n) {
|
break;
|
}
|
|
buf.push(n);
|
} else if (tok.type === lexer.TOKEN_VARIABLE_START) {
|
var e = this.parseExpression();
|
this.dropLeadingWhitespace = false;
|
this.advanceAfterVariableEnd();
|
buf.push(new nodes.Output(tok.lineno, tok.colno, [e]));
|
} else if (tok.type === lexer.TOKEN_COMMENT) {
|
this.dropLeadingWhitespace = tok.value.charAt(tok.value.length - this.tokens.tags.COMMENT_END.length - 1) === '-';
|
} else {
|
// Ignore comments, otherwise this should be an error
|
this.fail('Unexpected token at top-level: ' + tok.type, tok.lineno, tok.colno);
|
}
|
}
|
|
return buf;
|
};
|
|
_proto.parse = function parse() {
|
return new nodes.NodeList(0, 0, this.parseNodes());
|
};
|
|
_proto.parseAsRoot = function parseAsRoot() {
|
return new nodes.Root(0, 0, this.parseNodes());
|
};
|
|
return Parser;
|
}(Obj); // var util = require('util');
|
// var l = lexer.lex('{%- if x -%}\n hello {% endif %}');
|
// var t;
|
// while((t = l.nextToken())) {
|
// console.log(util.inspect(t));
|
// }
|
// var p = new Parser(lexer.lex('hello {% filter title %}' +
|
// 'Hello madam how are you' +
|
// '{% endfilter %}'));
|
// var n = p.parseAsRoot();
|
// nodes.printNodes(n);
|
|
|
module.exports = {
|
parse: function parse(src, extensions, opts) {
|
var p = new Parser(lexer.lex(src, opts));
|
|
if (extensions !== undefined) {
|
p.extensions = extensions;
|
}
|
|
return p.parseAsRoot();
|
},
|
Parser: Parser
|
};
|
