Examples with RewriteEmptyStreamException org.antlr.runtime.tree.RewriteEmptyStreamException used on opensource projects

Example 1 with RewriteEmptyStreamException

use of org.antlr.runtime.tree.RewriteEmptyStreamException in project drools by kiegroup.

the class DSLMapParser method entry.

// $ANTLR start "entry"
// src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:1: entry : scope_section ( meta_section )? key_section EQUALS ( value_section )? ( EOL | EOF ) -> ^( VT_ENTRY scope_section ( meta_section )? key_section ( value_section )? ) ;
public final DSLMapParser.entry_return entry() throws RecognitionException {
    DSLMapParser.entry_return retval = new DSLMapParser.entry_return();
    retval.start = input.LT(1);
    Object root_0 = null;
    Token EQUALS7 = null;
    Token EOL9 = null;
    Token EOF10 = null;
    ParserRuleReturnScope scope_section4 = null;
    ParserRuleReturnScope meta_section5 = null;
    ParserRuleReturnScope key_section6 = null;
    ParserRuleReturnScope value_section8 = null;
    Object EQUALS7_tree = null;
    Object EOL9_tree = null;
    Object EOF10_tree = null;
    RewriteRuleTokenStream stream_EQUALS = new RewriteRuleTokenStream(adaptor, "token EQUALS");
    RewriteRuleTokenStream stream_EOL = new RewriteRuleTokenStream(adaptor, "token EOL");
    RewriteRuleTokenStream stream_EOF = new RewriteRuleTokenStream(adaptor, "token EOF");
    RewriteRuleSubtreeStream stream_meta_section = new RewriteRuleSubtreeStream(adaptor, "rule meta_section");
    RewriteRuleSubtreeStream stream_key_section = new RewriteRuleSubtreeStream(adaptor, "rule key_section");
    RewriteRuleSubtreeStream stream_scope_section = new RewriteRuleSubtreeStream(adaptor, "rule scope_section");
    RewriteRuleSubtreeStream stream_value_section = new RewriteRuleSubtreeStream(adaptor, "rule value_section");
    try {
        // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:8: ( scope_section ( meta_section )? key_section EQUALS ( value_section )? ( EOL | EOF ) -> ^( VT_ENTRY scope_section ( meta_section )? key_section ( value_section )? ) )
        // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:10: scope_section ( meta_section )? key_section EQUALS ( value_section )? ( EOL | EOF )
        {
            pushFollow(FOLLOW_scope_section_in_entry336);
            scope_section4 = scope_section();
            state._fsp--;
            if (state.failed)
                return retval;
            if (state.backtracking == 0)
                stream_scope_section.add(scope_section4.getTree());
            // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:24: ( meta_section )?
            int alt3 = 2;
            int LA3_0 = input.LA(1);
            if ((LA3_0 == LEFT_SQUARE)) {
                int LA3_1 = input.LA(2);
                if ((LA3_1 == LITERAL)) {
                    int LA3_3 = input.LA(3);
                    if ((LA3_3 == RIGHT_SQUARE)) {
                        int LA3_5 = input.LA(4);
                        if ((synpred3_DSLMap())) {
                            alt3 = 1;
                        }
                    }
                } else if ((LA3_1 == RIGHT_SQUARE)) {
                    int LA3_4 = input.LA(3);
                    if ((synpred3_DSLMap())) {
                        alt3 = 1;
                    }
                }
            }
            switch(alt3) {
                case 1:
                    // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:24: meta_section
                    {
                        pushFollow(FOLLOW_meta_section_in_entry338);
                        meta_section5 = meta_section();
                        state._fsp--;
                        if (state.failed)
                            return retval;
                        if (state.backtracking == 0)
                            stream_meta_section.add(meta_section5.getTree());
                    }
                    break;
            }
            pushFollow(FOLLOW_key_section_in_entry341);
            key_section6 = key_section();
            state._fsp--;
            if (state.failed)
                return retval;
            if (state.backtracking == 0)
                stream_key_section.add(key_section6.getTree());
            EQUALS7 = (Token) match(input, EQUALS, FOLLOW_EQUALS_in_entry343);
            if (state.failed)
                return retval;
            if (state.backtracking == 0)
                stream_EQUALS.add(EQUALS7);
            // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:57: ( value_section )?
            int alt4 = 2;
            int LA4_0 = input.LA(1);
            if (((LA4_0 >= COLON && LA4_0 <= DOT) || LA4_0 == EQUALS || (LA4_0 >= LEFT_CURLY && LA4_0 <= LITERAL) || LA4_0 == RIGHT_SQUARE)) {
                alt4 = 1;
            }
            switch(alt4) {
                case 1:
                    // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:57: value_section
                    {
                        pushFollow(FOLLOW_value_section_in_entry345);
                        value_section8 = value_section();
                        state._fsp--;
                        if (state.failed)
                            return retval;
                        if (state.backtracking == 0)
                            stream_value_section.add(value_section8.getTree());
                    }
                    break;
            }
            // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:72: ( EOL | EOF )
            int alt5 = 2;
            int LA5_0 = input.LA(1);
            if ((LA5_0 == EOL)) {
                alt5 = 1;
            } else if ((LA5_0 == EOF)) {
                alt5 = 2;
            } else {
                if (state.backtracking > 0) {
                    state.failed = true;
                    return retval;
                }
                NoViableAltException nvae = new NoViableAltException("", 5, 0, input);
                throw nvae;
            }
            switch(alt5) {
                case 1:
                    // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:73: EOL
                    {
                        EOL9 = (Token) match(input, EOL, FOLLOW_EOL_in_entry349);
                        if (state.failed)
                            return retval;
                        if (state.backtracking == 0)
                            stream_EOL.add(EOL9);
                    }
                    break;
                case 2:
                    // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:119:77: EOF
                    {
                        EOF10 = (Token) match(input, EOF, FOLLOW_EOF_in_entry351);
                        if (state.failed)
                            return retval;
                        if (state.backtracking == 0)
                            stream_EOF.add(EOF10);
                    }
                    break;
            }
            // wildcard labels:
            if (state.backtracking == 0) {
                retval.tree = root_0;
                RewriteRuleSubtreeStream stream_retval = new RewriteRuleSubtreeStream(adaptor, "rule retval", retval != null ? retval.getTree() : null);
                root_0 = (Object) adaptor.nil();
                // 120:5: -> ^( VT_ENTRY scope_section ( meta_section )? key_section ( value_section )? )
                {
                    // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:120:8: ^( VT_ENTRY scope_section ( meta_section )? key_section ( value_section )? )
                    {
                        Object root_1 = (Object) adaptor.nil();
                        root_1 = (Object) adaptor.becomeRoot((Object) adaptor.create(VT_ENTRY, "VT_ENTRY"), root_1);
                        adaptor.addChild(root_1, stream_scope_section.nextTree());
                        // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:120:33: ( meta_section )?
                        if (stream_meta_section.hasNext()) {
                            adaptor.addChild(root_1, stream_meta_section.nextTree());
                        }
                        stream_meta_section.reset();
                        adaptor.addChild(root_1, stream_key_section.nextTree());
                        // src/main/resources/org/drools/compiler/lang/dsl/DSLMap.g:120:59: ( value_section )?
                        if (stream_value_section.hasNext()) {
                            adaptor.addChild(root_1, stream_value_section.nextTree());
                        }
                        stream_value_section.reset();
                        adaptor.addChild(root_0, root_1);
                    }
                }
                retval.tree = root_0;
            }
        }
        retval.stop = input.LT(-1);
        if (state.backtracking == 0) {
            retval.tree = (Object) adaptor.rulePostProcessing(root_0);
            adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop);
        }
    } catch (RecognitionException e) {
        reportError(e);
    } catch (RewriteEmptyStreamException e) {
    } finally {
    // do for sure before leaving
    }
    return retval;
}