Substitution Examples

Field substitution macros can be used in one of two ways:

• Direct Substitution or
• Conditional Substitution
  

Direct Substitution

This form directly substitutes the corresponding value of the element in scope into the output.

Structure: %<macroName>%

Where <macroName> can be any of the macros listed in the Field Substitution Macros tables.

Examples

• %className%
• %opName%
• %attName%
  

Conditional Substitution

This form of the macro enables alternative substitutions to be made depending on the macro's value.

Structure: %<macroName> (  == "<text>" )  ? <subTrue> (  : <subFalse>  ) %

Where:

• ( ) denotes that values between the parentheses are optional
• <text> is a string representing a possible value for the macro
• <subTrue> and <subFalse> can be a combination of quoted strings and the keyword value; where the value is used, it is replaced with the macro's value in the output.

Examples

• %classAbstract=="T" ? "pure" :""%
• %opStereotype=="operator" ? "operator" :""%
• %paramDefault != "" ? " = " value : ""%

Those three examples output nothing if the condition fails. In this case the False condition can be omitted, resulting in this usage:

• %classAbstract=="T" ? "pure"%
• %opStereotype=="operator" ? "operator"%
• %paramDefault != "" ? " = "value%

The third example of both blocks shows a comparison checking for a non-empty value or existence. This test can also be omitted.

• %paramDefault ? " = " value : ""%
• %paramDefault ? " = " value%

All of the above examples containing paramDefault are equivalent. If the parameter in scope had a default value of 10, the output from each of them would normally be:

= 10

Notes

• In a conditional substitution macro, any white space following <macroName> is ignored; if white space is required in the output, it should be included within the quoted substitution strings

Learn more

• Field Substitution Macros