package Tokens;

/**

* ComplexToken breaks a token into complex types, loops and scoped functions. It then

* creates another base toekn inside of the scoped fuction.

*

* @author Keenan Leverty

* @author Peter Matern

* @author Chris Allender

*/

class ComplexToken extends Token {

BaseToken nextBase;

SimpleToken forToken;

int type = -1;

/**

* Determines what type of complex token the token is. Makes a new base token with the rest of the input.

* @param input String to be tokenized

* @param scope The scope of the token itself, used to tab in for formatting

*/

ComplexToken(String input, int scope) {

super(input, scope);

if (input.startsWith("while")) {

nextBase = new BaseToken(input.substring(input.indexOf("{") + 1, input.lastIndexOf("}") + 1), scope + 1);

type = 0;

}

else if (input.startsWith("for")) {

forToken = new SimpleToken(input.substring(input.indexOf("(") + 1, input.indexOf(";") + 1), scope);

nextBase = new BaseToken(input.substring(input.indexOf("{") + 1, input.lastIndexOf("}") + 1), scope + 1);

type = 1;

} else if (input.startsWith("if")) {

nextBase = new BaseToken(input.substring(input.indexOf("{") + 1, input.lastIndexOf("}") + 1), scope + 1);

type = 2;

} else if (input.startsWith("voidmain")) {

nextBase = new BaseToken(input.substring(input.indexOf("{") + 1, input.lastIndexOf("}") + 1), scope);

type = 3;

}

}

/**

* Formats the token based on the type given.

*

* @return the token as a python string

*/

@Override

public String toString() {

String output = "";

switch (type) {

case 0: {

output += gimmeTabs();

output += "while ";

output += input.substring(input.indexOf("(") + 1, input.indexOf(")")) + " :\n";

output += nextBase.toString();

break;

} case 1: { // Forloop broken into a while loop, uses the tokens from the inside to change the output in python

output += gimmeTabs() + forToken.toString();

output += gimmeTabs() + "while " + input.substring(input.indexOf(";") + 1, input.indexOf(";", input.indexOf(";") + 1)) + " :\n";

output += nextBase.toString();

output += nextBase.gimmeTabs() + input.substring(input.indexOf(";", input.indexOf(";") + 1) + 1, input.indexOf(")")) + "\n";

break;

} case 2: {

output += gimmeTabs();

output += "if ";

output += input.substring(input.indexOf("(") + 1, input.indexOf(")")) + " :\n";

output += nextBase.toString();

break;

} case 3: {

output += "\n" + nextBase.toString();

break;

}

}

return output;

}

}