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 Statements provide a convenient method to execute conditional or repetitive operations. The syntax is C/C++/Java like, so things should be easy to grasp.

If-Else Statement

The if-else statement offers support for conditionally executing operations.

Syntax

The general syntax for this is:

if(condition) {
    Instruction1;
    ...
    InstructionN;
} else {
    Instruction1:
    ...
    InstructionN;
}

Example

if (isNotNull(fixVersions) and affectedVersions == {"1.1"})
{
    affectedVersions = {"1.1", "1.0" , "1.2"};
    fixVersions = {"1.2" , "1.2" , "1.3"} ;
}
else
{
    affectedVersions = {"1.1"};
    fixVersions = {"1.0"};
}

For Statement

The for statement provides a compact way to iterate over a range of values. Programmers often refer to it as the for loop because of the way in which it repeatedly loops until a particular condition is satisfied.

The standard form

Similar to C, C++ or Java of the for statement can be expressed as follows:

for(<init>; <condition>; <increment>){
   Instruction1;
   ...
   InstructionN;
}

The foreach form

The foreach form can be expressed as follows:

for(<variable_definition> in #{array}){
   Instruction1;
   ...
   InstructionN;
}

Examples

Example 1 (standard form)

Prints the numbers from 0 to 9*

for(number i = 0; i < 10; i = i + 1){
   print(i);
}

Example 2 (foreach form)

Prints the list of the watchers of a specific issue*

for(string user in watchers){
   print(user);
}

While Statement

The while statement offers support for repeated executions. This form evaluates the condition first and then executes the instructions in the body.

Syntax

while(condition) {
    Instruction1;
    ...
    InstructionN;
}

Example

number i = 1;
while(i <= 3) {
    multisel = arrayAddElement(multisel,"value" + i);
    i = i + 1;
}

Do-While Statement

The do-while statement is similar to the while statement, except that the condition is evaluated after the execution of the encapsulated block. So,even if the condition is false, the instructions will still be evaluated once.

Syntax

The general syntax is:

do {
    Instruction1;
    ...
    InstructionN;
} while(condition);

Example

number i = 1;
string [] people;
do {
    people += watchers[i];
    i = i + 1;
} while(i < 5);