Package xbird.xquery.expr.var.BindingVariable

Examples of xbird.xquery.expr.var.BindingVariable.LetVariable

245
246
247
248
249
250
251
252
253
254
255
256
        }
        Sequence<? extends Item> input = new DummySequence(dynEnv);
        for(Binding bc : _clauses) {
            final int bindingType = bc.getExpressionType();
            if(bindingType == Binding.LET_CLAUSE) {
                final LetVariable lv = ((LetClause) bc).getVariable();
                final int refcnt = lv.getReferenceCount();
                if(refcnt == 0) {
                    continue;
                }
                input = new ActionSequence(input, bc, dynEnv);
            } else if(bindingType == Binding.FOR_CLAUSE) {
View Full Code Here
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
        return "let $" + _variable.getName() + " := " + _variable.getValue().toString();
    }

    public Sequence<? extends Item> eval(Sequence<? extends Item> contextSeq, DynamicContext dynEnv)
            throws XQueryException {
        LetVariable lv = (LetVariable) _variable;
        XQExpression letExpr = lv.getValue();
        Sequence<? extends Item> res = letExpr.eval(contextSeq, dynEnv);
        if(lv.attemptEagarEvaluation() && lv.getReferenceCount() > 1) {
            List<? extends Item> items = res.materialize(); // TODO REVIEWME weak memory utilization
            lv.allocateResult(new ValueSequence(items, dynEnv), dynEnv);
        } else {
            lv.allocateResult(res, dynEnv);
        }
        return res;
    }
View Full Code Here
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
        final Collection<ExpressionProxy> proxys = _invarients.values();
        if(!proxys.isEmpty()) {
            for(ExpressionProxy proxy : proxys) {
                final XQExpression orig = proxy.getOriginalExpr();
                final LetVariable lv = new LoopInvariantLetVariable(orig);
                proxy.setReplacedExpr(lv);
                final LetClause lc = new LetClause(lv);
                clauses.add(insertionPoint, lc);
            }
            _invarients.clear();
View Full Code Here
194
195
196
197
198
199
200
201
202
203
204
205
                            Variable pv = pathSrc.getValue();
                            if(pv instanceof BindingVariable) {
                                if(searchKeyExpr instanceof CompositePath
                                        && _currentForClause != null) {
                                    assert (_currentBindings != null);
                                    final LetVariable lv = new AnonymousLetVariable(searchKeyExpr);
                                    lv.incrementReferenceCount();
                                    final int bsize = _currentBindings.size();
                                    assert (bsize > 0) : bsize;
                                    boolean found = false;
                                    for(int i = 0; i < bsize; i++) {
                                        Binding binding = _currentBindings.get(i);
View Full Code Here
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
     ("," "$" VarName TypeDeclaration? ":=" ExprSingle)*
     [110] TypeDeclaration ::= "as" SequenceType
     ************************************************************************/
    final public List<Binding> parseLetClause() throws ParseException, XQueryException {
        final List<Binding> lets;
        LetVariable var;
        LetClause clause;
        Type varType = null;
        XQExpression expr = null;
        currentToken = jj_consume_token(LetVariable);
        currentToken = jj_consume_token(VarName);
        QualifiedName varName = QNameUtil.parse(currentToken.image, namespaceContext, currentModule.getNamespace());
        var = new LetVariable(varName);
        currentModule.putVariable(varName, var);
        clause = new LetClause(var);
        locate(clause);
        switch(jj_nt.kind) {
            case As:
                currentToken = jj_consume_token(As);
                varType = parseSequenceType();
                var.setType(varType);
                break;
            default:
                jj_la1[70] = jj_gen;
                ;
        }
        currentToken = jj_consume_token(ColonEquals);
        expr = parseExprSingle();
        var.setValue(expr);
        lets = new LinkedList<Binding>();
        lets.add(clause);
        label_10: while(true) {
            switch(jj_nt.kind) {
                case Comma:
                    ;
                    break;
                default:
                    jj_la1[71] = jj_gen;
                    break label_10;
            }
            //("," "$" VarName TypeDeclaration? ":=" ExprSingle)*
            currentToken = jj_consume_token(Comma);
            currentToken = jj_consume_token(VariableIndicator);
            currentToken = jj_consume_token(VarName);
            varName = QNameUtil.parse(currentToken.image, namespaceContext, currentModule.getNamespace());
            var = new LetVariable(varName);
            currentModule.putVariable(varName, var);
            clause = new LetClause(var);
            switch(jj_nt.kind) {
                case As:
                    currentToken = jj_consume_token(As);
                    varType = parseSequenceType();
                    var.setType(varType);
                    break;
                default:
                    jj_la1[72] = jj_gen;
                    ;
            }
            currentToken = jj_consume_token(ColonEquals);
            expr = parseExprSingle();
            var.setValue(expr);
            lets.add(clause);
        }
        {
            if(true)
                return lets;
View Full Code Here
TOP

Related Classes of xbird.xquery.expr.var.BindingVariable.LetVariable

  • xbird.xquery.dm.value.sequence.GroupedSequence$PreGroupingVariableExtractor
  • xbird.xquery.expr.ext.BDQExpr$ParametricVariableDetector
  • xbird.xquery.expr.flwr.FLWRExpr
  • xbird.xquery.expr.flwr.LetClause
  • xbird.xquery.expr.opt.Join$JoinDetector
  • xbird.xquery.expr.path.FilterExpr$EagarAnnotator
  • xbird.xquery.optim.LoopInvariantsTransformer
  • xbird.xquery.parser.XQueryParser
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.