Examples with ParseException japa.parser.ParseException used on opensource projects

Example 6 with ParseException

use of japa.parser.ParseException in project japid42 by branaway.

the class JavaSyntaxTool method isValidMethDecl.

/**
	 * verify that line is a valid method declaration part, excluding method body and the {} 
	 * @param line: something like foo(int a, String b)
	 */
public static void isValidMethDecl(String line) {
    final String classTempForMeth = "class T {  %s{} }";
    String classString = String.format(classTempForMeth, line);
    try {
        CompilationUnit cu = parse(classString);
        VoidVisitorAdapter visitor = new VoidVisitorAdapter() {
        };
        cu.accept(visitor, null);
    } catch (ParseException e) {
        throw new RuntimeException("the line does not seem to be a valid method declaration: " + line + ". Was expecting something like foo(int a, String b).");
    }
}

Example 7 with ParseException

use of japa.parser.ParseException in project japid42 by branaway.

the class JavaSyntaxTool method parseNamedArgs.

/**
	 * 
	 * @param line
	 * @return list of named args if all the args are named; empty list if none
	 *         is named; or an exception is thrown if the arg list is not valid
	 *         or named and un-named are mixed
	 * 
	 */
public static List<NamedArg> parseNamedArgs(String line) {
    final List<NamedArg> ret = new ArrayList<NamedArg>();
    if (line == null || line.trim().length() == 0)
        return ret;
    line = line.trim();
    //		if (line.startsWith("(")) {
    //			if (line.endsWith(")"))
    //				line = line.substring(1, line.length() - 1);
    //			else
    //				throw new RuntimeException("no closing ')' in arg expression: "
    //						+ line);
    //		}
    String cl = String.format(classTempForArgs, line);
    final String finalLine = line;
    try {
        CompilationUnit cu = parse(cl);
        VoidVisitorAdapter visitor = new VoidVisitorAdapter() {

            boolean hasNamed = false;

            boolean hasUnNamed = false;

            @Override
            public void visit(MethodCallExpr n, Object arg) {
                List<Expression> args = n.getArgs();
                // api issue: args can be null in case of empty arg list
                if (args != null)
                    for (Expression expr : args) {
                        if (expr instanceof AssignExpr) {
                            if (hasUnNamed)
                                throw new RuntimeException("the line has mixed named and un-named arg list. It's not valid in Japid tag invocation. It must be all-or-none.: " + finalLine);
                            hasNamed = true;
                            AssignExpr ae = (AssignExpr) expr;
                            NamedArg na = new NamedArg(ae.getTarget(), ae.getValue());
                            ret.add(na);
                        } else {
                            if (hasNamed)
                                throw new RuntimeException("the line has mixed named and un-named arg list. It's not valid in Japid tag invocation. It must be all-or-none.: " + finalLine);
                            hasUnNamed = true;
                        }
                    }
            }
        };
        cu.accept(visitor, null);
    } catch (ParseException e) {
        throw new RuntimeException("the line does not seem to be a valid arg list: " + line + ". ");
    }
    return ret;
}

Example 8 with ParseException

use of japa.parser.ParseException in project japid42 by branaway.

the class JavaSyntaxTool method isOpenIf.

public static boolean isOpenIf(String part) {
    part = part.trim();
    if (part.endsWith("{"))
        part = part.substring(0, part.length() - 1);
    String classString = String.format(IF_PREDICATE_OPEN, part);
    try {
        CompilationUnit cu = parse(classString);
        return true;
    } catch (ParseException e) {
        return false;
    }
}

Example 9 with ParseException

use of japa.parser.ParseException in project japid42 by branaway.

the class JavaSyntaxTool method parse.

public static CompilationUnit parse(String src) throws ParseException {
    ByteArrayInputStream in;
    try {
        in = new ByteArrayInputStream(src.getBytes(UTF_8));
        CompilationUnit cu;
        cu = JavaParser.parse(in, UTF_8);
        return cu;
    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (TokenMgrError e) {
        throw new ParseException(e.getMessage());
    }
    return null;
}

Example 10 with ParseException

use of japa.parser.ParseException in project japid42 by branaway.

the class JavaSyntaxTool method parseArgs.

// XXX this method does not properly parse thingsl like A<t> a
// it does not detect the error
@SuppressWarnings("unchecked")
public static List<String> parseArgs(String line) {
    final List<String> ret = new ArrayList<String>();
    if (line == null || line.trim().length() == 0)
        return ret;
    @SuppressWarnings("rawtypes") VoidVisitorAdapter visitor = new VoidVisitorAdapter() {

        @Override
        public void visit(MethodCallExpr n, Object arg) {
            List<Expression> args = n.getArgs();
            // api issue: args can be null in case of empty arg list
            if (args != null)
                for (Expression e : args) {
                    ret.add(e.toString());
                }
        }
    };
    line = line.trim();
    if (line.startsWith("(")) {
        // perhaps it's in the form of (...)
        String cl = String.format(classTempForArgsNoParenthesis, line);
        try {
            CompilationUnit cu = parse(cl);
            cu.accept(visitor, null);
            return ret;
        } catch (ParseException e) {
        // perhaps not really (...). fall through
        }
    }
    String cl = String.format(classTempForArgs, line);
    try {
        CompilationUnit cu = parse(cl);
        cu.accept(visitor, null);
    } catch (ParseException e) {
        throw new RuntimeException("the line does not seem to be a valid arg list: " + line);
    }
    return ret;
}