// literal := INTEGER | FLOAT | TRUE | FALSE .
public ast.Expression literal() throws IOException {
ast.Expression expr = null;
if (currentToken.kind.name().equals("INTEGER")) {
expr = Command.newLiteral(expectRetrieve(Token.Kind.INTEGER));
} else if (currentToken.kind.name().equals("FLOAT")) {
expr = Command.newLiteral(expectRetrieve(Token.Kind.FLOAT));
} else if (currentToken.kind.name().equals("TRUE")) {
expr = Command.newLiteral(expectRetrieve(Token.Kind.TRUE));
} else if (currentToken.kind.name().equals("FALSE")) {
expr = Command.newLiteral(expectRetrieve(Token.Kind.FALSE));
}
return expr;
}
// type := IDENTIFIER .
private ast.Expression type() throws IOException {
// TODO Auto-generated method stub
// expects IDENTIFIER
return Command.newLiteral(expectRetrieve(Token.Kind.IDENTIFIER));
}