List of Figures

Chapter 1. What are domain-specific languages?

Figure 1.1. A hierarchical representation of the AST generated from a simple if statement

Figure 1.2. UML class diagram displaying the Customer object

Figure 1.3. DSLs used as integral parts of an application

Chapter 2. An overview of the Boo language

Figure 2.1. The IQuackFu interface is Boo’s version of method missing.

Chapter 3. The drive toward DSLs

Figure 3.1. Standard operating procedure for imperative DSLs

Figure 3.2. Standard operating procedure for declarative DSLs

Figure 3.3. A typical DSL structure

Figure 3.4. DSLs used in a DDD context

Figure 3.5. Class diagram of BaseScheduler, the implicit base class for the Scheduling DSL

Chapter 4. Building DSLs

Figure 4.1. Routing messages using DSL

Figure 4.2. The Router class

Figure 4.3. The Authorization class, the gateway to the Authorization DSL

Figure 4.4. The base class for the Authorization DSL—AuthorizationRule

Figure 4.5. The quote-generation UI allows us to pass information from the application to the DSL.

Figure 4.6. Implicit base class for the Quote-Generation DSL

Chapter 5. Integrating DSLs into your applications

Figure 5.1. The integrated DSLs in our online shop example

Figure 5.2. A sample directory of Message-Routing DSL scripts

Figure 5.3. A directory structure mirroring our messaging structure

Figure 5.4. A base class for a DSL that supports script prioritization

Figure 5.5. An administration screen for specifying which rules to execute on an operation