Examples with FuncCallNode org.cytoscape.equations.internal.parse_tree.FuncCallNode used on opensource projects

Example 1 with FuncCallNode

use of org.cytoscape.equations.internal.parse_tree.FuncCallNode in project cytoscape-impl by cytoscape.

the class EquationParserImpl method parseFunctionCall.

/**
 *   Implements func_call --> ident "(" ")" | ident "(" expr {"," expr} ")".
 */
private AbstractNode parseFunctionCall() {
    Token token = tokeniser.getToken();
    final int functionNameStartPos = tokeniser.getStartPos();
    if (token != Token.IDENTIFIER)
        throw new IllegalStateException(functionNameStartPos + ": function name expected.");
    final String originalName = tokeniser.getIdent();
    final String functionNameCandidate = originalName.toUpperCase();
    if (functionNameCandidate.equals("DEFINED"))
        return parseDefined();
    final Function func = nameToFunctionMap.get(functionNameCandidate);
    if (func == null) {
        if (tokeniser.getToken() == Token.OPEN_PAREN)
            throw new IllegalStateException(functionNameStartPos + ": call to unknown function " + originalName + "().");
        else
            throw new IllegalStateException(functionNameStartPos + ": unknown text \"" + originalName + "\", maybe you forgot to put quotes around this text?");
    }
    token = tokeniser.getToken();
    final int openParenPos = tokeniser.getStartPos();
    if (token != Token.OPEN_PAREN)
        throw new IllegalStateException(openParenPos + ": expected '(' after function name \"" + functionNameCandidate + "\".");
    // Parse the comma-separated argument list.
    final ArrayList<Class<?>> argTypes = new ArrayList<Class<?>>();
    ArrayList<AbstractNode> args = new ArrayList<AbstractNode>();
    int sourceLocation;
    for (; ; ) {
        token = tokeniser.getToken();
        sourceLocation = tokeniser.getStartPos();
        if (token == Token.CLOSE_PAREN)
            break;
        tokeniser.ungetToken(token);
        final AbstractNode exprNode = parseExpr();
        argTypes.add(exprNode.getType());
        args.add(exprNode);
        token = tokeniser.getToken();
        sourceLocation = tokeniser.getStartPos();
        if (token != Token.COMMA)
            break;
    }
    final Class<?> returnType = func.validateArgTypes(argTypes.toArray(new Class<?>[argTypes.size()]));
    if (returnType == null)
        throw new IllegalStateException((openParenPos + 1) + ": invalid number or type of arguments in call to " + functionNameCandidate + "().");
    if (token != Token.CLOSE_PAREN)
        throw new IllegalStateException(sourceLocation + ": expected the closing parenthesis of a call to " + functionNameCandidate + ".");
    AbstractNode[] nodeArray = new AbstractNode[args.size()];
    return new FuncCallNode(functionNameStartPos, func, returnType, args.toArray(nodeArray));
}