Examples with RecognitionException org.antlr.runtime.RecognitionException used on opensource projects

Example 86 with RecognitionException

use of org.antlr.runtime.RecognitionException in project drools by kiegroup.

the class DRL6Parser method typeArguments.

/**
 * Matches type arguments
 *
 * typeArguments := LESS typeArgument (COMMA typeArgument)* GREATER
 *
 * @return
 * @throws org.antlr.runtime.RecognitionException
 */
public String typeArguments() throws RecognitionException {
    String typeArguments = "";
    try {
        int first = input.index();
        Token token = match(input, DRL6Lexer.LESS, null, new int[] { DRL6Lexer.QUESTION, DRL6Lexer.ID }, DroolsEditorType.SYMBOL);
        if (state.failed)
            return typeArguments;
        typeArgument();
        if (state.failed)
            return typeArguments;
        while (input.LA(1) == DRL6Lexer.COMMA) {
            token = match(input, DRL6Lexer.COMMA, null, new int[] { DRL6Lexer.QUESTION, DRL6Lexer.ID }, DroolsEditorType.IDENTIFIER);
            if (state.failed)
                return typeArguments;
            typeArgument();
            if (state.failed)
                return typeArguments;
        }
        token = match(input, DRL6Lexer.GREATER, null, null, DroolsEditorType.SYMBOL);
        if (state.failed)
            return typeArguments;
        typeArguments = input.toString(first, token.getTokenIndex());
    } catch (RecognitionException re) {
        reportError(re);
    }
    return typeArguments;
}

Example 87 with RecognitionException

use of org.antlr.runtime.RecognitionException in project drools by kiegroup.

the class DRL6Parser method rule.

/* ------------------------------------------------------------------------------------------------
     *                         RULE STATEMENT
     * ------------------------------------------------------------------------------------------------ */
/**
 * rule := RULE stringId (EXTENDS stringId)? annotation* attributes? lhs? rhs END
 *
 * @return
 * @throws org.antlr.runtime.RecognitionException
 */
public RuleDescr rule(PackageDescrBuilder pkg) throws RecognitionException {
    RuleDescrBuilder rule = null;
    try {
        rule = helper.start(pkg, RuleDescrBuilder.class, null);
        // 'rule'
        match(input, DRL6Lexer.ID, DroolsSoftKeywords.RULE, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
        if (helper.validateIdentifierKey(DroolsSoftKeywords.WHEN) || helper.validateIdentifierKey(DroolsSoftKeywords.THEN) || helper.validateIdentifierKey(DroolsSoftKeywords.END)) {
            failMissingTokenException();
            // in case it is backtracking
            return null;
        }
        String name = stringId();
        if (state.failed)
            return null;
        if (state.backtracking == 0) {
            rule.name(name);
            helper.setParaphrasesValue(DroolsParaphraseTypes.RULE, "\"" + name + "\"");
            helper.emit(Location.LOCATION_RULE_HEADER);
        }
        if (helper.validateIdentifierKey(DroolsSoftKeywords.EXTENDS)) {
            // 'extends'
            match(input, DRL6Lexer.ID, DroolsSoftKeywords.EXTENDS, null, DroolsEditorType.KEYWORD);
            if (state.failed)
                return null;
            String parent = stringId();
            if (state.backtracking == 0)
                rule.extendsRule(parent);
            if (state.failed)
                return null;
        }
        if (state.backtracking == 0 && input.LA(1) != DRL6Lexer.EOF) {
            helper.emit(Location.LOCATION_RULE_HEADER);
        }
        while (input.LA(1) == DRL6Lexer.AT) {
            // annotation*
            annotation(rule);
            if (state.failed)
                return null;
        }
        attributes(rule);
        if (helper.validateIdentifierKey(DroolsSoftKeywords.WHEN)) {
            lhs(rule);
        } else {
            // creates an empty LHS
            rule.lhs();
        }
        rhs(rule);
        match(input, DRL6Lexer.ID, DroolsSoftKeywords.END, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
    } catch (RecognitionException re) {
        reportError(re);
    } finally {
        helper.end(RuleDescrBuilder.class, rule);
    }
    return (rule != null) ? rule.getDescr() : null;
}

Example 88 with RecognitionException

use of org.antlr.runtime.RecognitionException in project drools by kiegroup.

the class DRL6Parser method function.

/* ------------------------------------------------------------------------------------------------
     *                         FUNCTION STATEMENT
     * ------------------------------------------------------------------------------------------------ */
/**
 * function := FUNCTION type? ID parameters(typed) chunk_{_}
 *
 * @return
 * @throws org.antlr.runtime.RecognitionException
 */
public FunctionDescr function(PackageDescrBuilder pkg) throws RecognitionException {
    FunctionDescrBuilder function = null;
    try {
        function = helper.start(pkg, FunctionDescrBuilder.class, null);
        // 'function'
        match(input, DRL6Lexer.ID, DroolsSoftKeywords.FUNCTION, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
        if (input.LA(1) != DRL6Lexer.ID || input.LA(2) != DRL6Lexer.LEFT_PAREN) {
            // type
            String type = type();
            if (state.failed)
                return null;
            if (state.backtracking == 0)
                function.returnType(type);
        }
        // name
        Token id = match(input, DRL6Lexer.ID, null, null, DroolsEditorType.IDENTIFIER);
        if (state.failed)
            return null;
        if (state.backtracking == 0) {
            function.name(id.getText());
            helper.setParaphrasesValue(DroolsParaphraseTypes.FUNCTION, "\"" + id.getText() + "\"");
        }
        // arguments
        parameters(function, true);
        if (state.failed)
            return null;
        // body
        String body = chunk(DRL6Lexer.LEFT_CURLY, DRL6Lexer.RIGHT_CURLY, -1);
        if (state.failed)
            return null;
        if (state.backtracking == 0)
            function.body(body);
    } catch (RecognitionException re) {
        reportError(re);
    } finally {
        helper.end(FunctionDescrBuilder.class, function);
    }
    return (function != null) ? function.getDescr() : null;
}

Example 89 with RecognitionException

use of org.antlr.runtime.RecognitionException in project drools by kiegroup.

the class DRL6Parser method enumDeclaration.

/*
     * typeDeclaration := [ENUM] qualifiedIdentifier
     *                         annotation*
     *                         enumerative+
     *                         field*
     *                     END
     *
     * @return
     * @throws RecognitionException
     */
public EnumDeclarationDescr enumDeclaration(DeclareDescrBuilder ddb) throws RecognitionException {
    EnumDeclarationDescrBuilder declare = null;
    try {
        declare = helper.start(ddb, EnumDeclarationDescrBuilder.class, null);
        // type may be qualified when adding metadata
        String type = qualifiedIdentifier();
        if (state.failed)
            return null;
        if (state.backtracking == 0)
            declare.name(type);
        while (input.LA(1) == DRL6Lexer.AT) {
            // annotation*
            annotation(declare);
            if (state.failed)
                return null;
        }
        while (input.LA(1) == DRL6Lexer.ID) {
            int next = input.LA(2);
            if (next == DRL6Lexer.LEFT_PAREN || next == DRL6Lexer.COMMA || next == DRL6Lexer.SEMICOLON) {
                enumerative(declare);
                if (state.failed)
                    return null;
            }
            if (input.LA(1) == DRL6Lexer.COMMA) {
                match(input, DRL6Lexer.COMMA, null, null, DroolsEditorType.SYMBOL);
            } else {
                match(input, DRL6Lexer.SEMICOLON, null, null, DroolsEditorType.SYMBOL);
                break;
            }
        }
        // boolean qualified = type.indexOf( '.' ) >= 0;
        while (// ! qualified &&
        input.LA(1) == DRL6Lexer.ID && !helper.validateIdentifierKey(DroolsSoftKeywords.END)) {
            // field*
            field(declare);
            if (state.failed)
                return null;
        }
        match(input, DRL6Lexer.ID, DroolsSoftKeywords.END, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
    } catch (RecognitionException re) {
        reportError(re);
    } finally {
        helper.end(TypeDeclarationDescrBuilder.class, declare);
    }
    return (declare != null) ? declare.getDescr() : null;
}

Example 90 with RecognitionException

use of org.antlr.runtime.RecognitionException in project drools by kiegroup.

the class DRL6Parser method globalStatement.

/* ------------------------------------------------------------------------------------------------
     *                         GLOBAL STATEMENT
     * ------------------------------------------------------------------------------------------------ */
/**
 * globalStatement := GLOBAL type ID
 *
 * @return
 * @throws org.antlr.runtime.RecognitionException
 */
public GlobalDescr globalStatement(PackageDescrBuilder pkg) throws RecognitionException {
    GlobalDescrBuilder global = null;
    try {
        global = helper.start(pkg, GlobalDescrBuilder.class, null);
        // 'global'
        match(input, DRL6Lexer.ID, DroolsSoftKeywords.GLOBAL, null, DroolsEditorType.KEYWORD);
        if (state.failed)
            return null;
        // type
        String type = type();
        if (state.backtracking == 0)
            global.type(type);
        if (state.failed)
            return null;
        // identifier
        Token id = match(input, DRL6Lexer.ID, null, null, DroolsEditorType.IDENTIFIER_TYPE);
        if (state.failed)
            return null;
        if (state.backtracking == 0) {
            global.identifier(id.getText());
            helper.setParaphrasesValue(DroolsParaphraseTypes.GLOBAL, id.getText());
        }
    } catch (RecognitionException re) {
        reportError(re);
    } finally {
        helper.end(GlobalDescrBuilder.class, global);
    }
    return (global != null) ? global.getDescr() : null;
}