CUP parser to java

The language supports the concatenation operator over strings, function definitions and calls, conditionals (if-else i.e, every "if" must be followed by an "else"), and the following logical expressions:

is-prefix-of (string1 prefix string2): Whether string1 is a prefix of string2. is-suffix-of (string1 suffix string2): Whether string1 is a suffix of string2. All values in the language are strings.

Execution instructions:

$ cd parser
$ make compile
$ make execute < input.txt

Examples

#1

Input:

    name()  {
        "John"
    }
    
    surname() {
        "Doe"
    }
    
    fullname(first_name, sep, last_name) {
        first_name + sep + last_name
    }

    name()
    surname()
    fullname(name(), " ", surname())

Output (Java):

public class Main {
    public static void main(String[] args) {
        System.out.println(name());
        System.out.println(surname());
        System.out.println(fullname(name(), " ", surname()));
    }

    public static String name() {
        return "John";
    }

    public static String surname() {
        return "Doe";
    }

    public static String fullname(String firstname, String sep, String last_name) {
        return first_name + sep + last_name;
    }

}

#2

Input:

    name() {
        "John"
    }

    repeat(x) {
        x + x
    }

    cond_repeat(c, x) {
        if (c prefix "yes")
            if("yes" prefix c)
                repeat(x)
            else
                x
        else
            x
    }

    cond_repeat("yes", name())
    cond_repeat("no", "Jane")

#3

Input:

    findLangType(langName) {
        if ("Java" prefix langName)
            if(langName prefix "Java")
                "Static"
            else
                if("script" suffix langName)
                    "Dynamic"
                else
                    "Unknown"
        else
            if ("script" suffix langName)
                "Probably Dynamic"
            else
                "Unknown"
    }

    findLangType("Java")
    findLangType("Javascript")
    findLangType("Typescript")