public static IStmt generateExample5()
{
/* openRFile(var_f,"test.in");
* readFile(var_f+2,var_c);print(var_c);
* (if var_c then readFile(var_f,var_c);print(var_c)
* else print(0));
* closeRFile(var_f)
*/
IStmt lab5ex2 = new CompStmt(
new OpenRFileStmt("var_f", "test.in"),
new CompStmt(
new ReadFileStmt(
new ArithExp(
new VarExp("var_f"),
new ConstExp(2),
'+'),
"var_c"),
new CompStmt(
new PrintStmt(new VarExp("var_c")),
new CompStmt(
new IfStmt(
new VarExp("var_c"),
new CompStmt(
new ReadFileStmt(
new VarExp("var_f"),
"var_c"),
new PrintStmt(new VarExp("var_c"))),
new PrintStmt(new ConstExp(0))),
new PrintStmt(new VarExp("var_f"))))));
return(lab5ex2);
}
public static IStmt generateExample3()
{
/* a=2-2;
* If a Then v=2 Else v=3;
* Print(v)
*/
IStmt lab2ex3 = new CompStmt(
new AssignStmt(
"a",
new ArithExp(
new ConstExp(2),
new ConstExp(2),
'-')
),
new CompStmt(
new IfStmt(
new VarExp("a"),
new AssignStmt(
"v",
new ConstExp(2)),
new AssignStmt(
"v",
new ConstExp(3))),
new PrintStmt(new VarExp("v"))
)
);
return(lab2ex3);
}
public static IStmt generateExample1()
{
/* Lab2Ex1:
* v = 2;
* print (v)
*/
IStmt lab2ex1 = new CompStmt(
new AssignStmt("v", new ConstExp(2)),
new PrintStmt(new VarExp("v"))
);
return(lab2ex1);
}
public static IStmt generateExample2()
{
/* a=2+3*5;
* b=a-4/2+7;
* Print(b)
*/
IStmt lab2ex2 = new CompStmt(
new AssignStmt(
"a",
new ArithExp(
new ConstExp(2),
new ArithExp(
new ConstExp(3),
new ConstExp(5),
'*'),
'+')
),
new CompStmt(
new AssignStmt(
"b",
new ArithExp(
new ArithExp(
new VarExp("a"),
new ArithExp(
new ConstExp(-4),
new ConstExp(2),
'/'),
'+'),
new ConstExp(7),
'+')),
new PrintStmt(new VarExp("b"))
)
);
return(lab2ex2);
}