Enable method overloading and overriding

[AprupKale]

Enable running multiple classes in java-slang.

Enable method overloading and overriding to support code as follows:

public class Main {
  public void f(int x) {
    System.out.println("Instance int: " + x);
  }
  public void f(double x) {
    System.out.println("Instance double: " + x);
  }
  public static void main(String[] args) {
    Main obj = new Main();
    obj.f(5);
    obj.f(5.5);
  }
}

and

class Parent {
  public static void staticMethod() {
    System.out.println("Parent static method");
  }
  public void instanceMethod() {
    System.out.println("Parent instance method");
  }
}

class Child extends Parent {
  public static void staticMethod() {
    System.out.println("Child static method");
  }
  public void instanceMethod() {
    System.out.println("Child instance method");
  }
}

public class Main {
  public static void main(String[] args) {
    Parent.staticMethod(); // Parent static method
    Child.staticMethod(); // Child static method
    Parent ref = new Child();
    ref.instanceMethod(); // Child instance method
  }
}

[github-actions]

Coverage report

St.❔	Category	Percentage	Covered / Total
🟡	Statements	74.64% (+0.69% 🔼)	7628/10220
🟡	Branches	61.12% (+0.73% 🔼)	2553/4177
🟡	Functions	70.53% (+1.08% 🔼)	1357/1924
🟡	Lines	75.53% (+0.59% 🔼)	7181/9508

Show new covered files 🐣

St.❔	File	Statements	Branches	Functions	Lines
🟢	... / assignmentExpression.test.ts	100%	100%	100%	100%
🟢	... / castExpression.test.ts	100%	100%	100%	100%
🟢	... / switch.test.ts	100%	100%	100%	100%
🟢	... / methodOverloading.test.ts	100%	100%	100%	100%
🟢	... / methodOverriding.test.ts	100%	100%	100%	100%

Show files with reduced coverage 🔻

St.❔	File	Statements	Branches	Functions	Lines
🟡	... / index.ts	70.8% (-3.57% 🔻)	48% (-5.01% 🔻)	91.67% (-3.99% 🔻)	79.3% (-4.94% 🔻)
🟢	... / symbol-table.ts	93.07% (-0.83% 🔻)	76.09% (-3.32% 🔻)	100%	92.67% (-0.96% 🔻)
🟢	... / code-generator.ts	92.84% (-1.57% 🔻)	80.39% (-4.27% 🔻)	96.34% (+3.16% 🔼)	92.86% (-1.89% 🔻)

Test suite run success

1182 tests passing in 64 suites.

Report generated by 🧪jest coverage report action from d2517b2