Examples with NotNull org.antlr.v4.runtime.misc.NotNull used on opensource projects

Example 16 with NotNull

use of org.antlr.v4.runtime.misc.NotNull in project antlr4 by tunnelvisionlabs.

the class ParserATNFactory method optional.

/**
 * From {@code (A)?} build either:
 *
 * <pre>
 *  o--A-&gt;o
 *  |     ^
 *  o----&gt;|
 * </pre>
 *
 * or, if {@code A} is a block, just add an empty alt to the end of the
 * block
 */
@NotNull
@Override
public Handle optional(@NotNull GrammarAST optAST, @NotNull Handle blk) {
    BlockStartState blkStart = (BlockStartState) blk.left;
    ATNState blkEnd = blk.right;
    preventEpsilonOptionalBlocks.add(Tuple.create(currentRule, blkStart, blkEnd));
    boolean greedy = ((QuantifierAST) optAST).isGreedy();
    // no way to express SLL restriction
    blkStart.sll = false;
    blkStart.nonGreedy = !greedy;
    epsilon(blkStart, blk.right, !greedy);
    optAST.atnState = blk.left;
    return blk;
}

Example 17 with NotNull

use of org.antlr.v4.runtime.misc.NotNull in project antlr4 by tunnelvisionlabs.

the class ParserATNFactory method newState.

@NotNull
public <T extends ATNState> T newState(@NotNull Class<T> nodeType, GrammarAST node) {
    Exception cause;
    try {
        Constructor<T> ctor = nodeType.getConstructor();
        T s = ctor.newInstance();
        if (currentRule == null)
            s.setRuleIndex(-1);
        else
            s.setRuleIndex(currentRule.index);
        atn.addState(s);
        return s;
    } catch (InstantiationException ex) {
        cause = ex;
    } catch (IllegalAccessException ex) {
        cause = ex;
    } catch (IllegalArgumentException ex) {
        cause = ex;
    } catch (InvocationTargetException ex) {
        cause = ex;
    } catch (NoSuchMethodException ex) {
        cause = ex;
    } catch (SecurityException ex) {
        cause = ex;
    }
    String message = String.format("Could not create %s of type %s.", ATNState.class.getName(), nodeType.getName());
    throw new UnsupportedOperationException(message, cause);
}

Example 18 with NotNull

use of org.antlr.v4.runtime.misc.NotNull in project antlr4 by tunnelvisionlabs.

the class Target method loadTemplates.

@NotNull
protected STGroup loadTemplates() {
    STGroup result = new STGroupFile(CodeGenerator.TEMPLATE_ROOT + "/" + getLanguage() + "/" + getLanguage() + STGroup.GROUP_FILE_EXTENSION);
    result.registerRenderer(Integer.class, new NumberRenderer());
    result.registerRenderer(String.class, new StringRenderer());
    result.setListener(new STErrorListener() {

        @Override
        public void compileTimeError(STMessage msg) {
            reportError(msg);
        }

        @Override
        public void runTimeError(STMessage msg) {
            reportError(msg);
        }

        @Override
        public void IOError(STMessage msg) {
            reportError(msg);
        }

        @Override
        public void internalError(STMessage msg) {
            reportError(msg);
        }

        private void reportError(STMessage msg) {
            getCodeGenerator().tool.errMgr.toolError(ErrorType.STRING_TEMPLATE_WARNING, msg.cause, msg.toString());
        }
    });
    return result;
}

Example 19 with NotNull

use of org.antlr.v4.runtime.misc.NotNull in project antlr4 by tunnelvisionlabs.

the class Trees method getNodeText.

public static String getNodeText(@NotNull Tree t, @Nullable List<String> ruleNames) {
    if (ruleNames != null) {
        if (t instanceof RuleNode) {
            RuleContext ruleContext = ((RuleNode) t).getRuleContext();
            int ruleIndex = ruleContext.getRuleIndex();
            String ruleName = ruleNames.get(ruleIndex);
            int altNumber = ruleContext.getAltNumber();
            if (altNumber != ATN.INVALID_ALT_NUMBER) {
                return ruleName + ":" + altNumber;
            }
            return ruleName;
        } else if (t instanceof ErrorNode) {
            return t.toString();
        } else if (t instanceof TerminalNode) {
            Token symbol = ((TerminalNode) t).getSymbol();
            if (symbol != null) {
                String s = symbol.getText();
                return s;
            }
        }
    }
    // no recog for rule names
    Object payload = t.getPayload();
    if (payload instanceof Token) {
        return ((Token) payload).getText();
    }
    return t.getPayload().toString();
}

Example 20 with NotNull

use of org.antlr.v4.runtime.misc.NotNull in project antlr4 by tunnelvisionlabs.

the class ParseTreePattern method findAll.

/**
 * Find all nodes using XPath and then try to match those subtrees against
 * this tree pattern.
 *
 * @param tree The {@link ParseTree} to match against this pattern.
 * @param xpath An expression matching the nodes
 *
 * @return A collection of {@link ParseTreeMatch} objects describing the
 * successful matches. Unsuccessful matches are omitted from the result,
 * regardless of the reason for the failure.
 */
@NotNull
public List<ParseTreeMatch> findAll(@NotNull ParseTree tree, @NotNull String xpath) {
    Collection<ParseTree> subtrees = XPath.findAll(tree, xpath, matcher.getParser());
    List<ParseTreeMatch> matches = new ArrayList<ParseTreeMatch>();
    for (ParseTree t : subtrees) {
        ParseTreeMatch match = match(t);
        if (match.succeeded()) {
            matches.add(match);
        }
    }
    return matches;
}