Is

1
Is Higher Level Better?

• A programming language can be viewed as an
  interface to an abstract machine.
• Assembly language is just the right abstraction
  for a CPU.
• Why do some languages better match some
  applications than others?

2
We Need Domain Specificity

• A domain-specific language (or DSL) is a language
  that precisely captures a domain semantics no
  more, and no less.
• We also need domain specific
• specifications (starting point!)
• optimizations and transformations
• software tools
• type systems, aspects, constraints, etc.

3
Advantages of DSL Approach

• Programs in the target domain are
• more concise
• quicker to write
• easier to maintain
• easier to reason about
• can often be written by non-programmers

Contribute to higher programmer productivity
Dominant cost in large SW systems
Verification, transform- ation, optimization
These are the same arguments in favor of any
high-level language. But in addition
Helps bridge gap between developer and user
4
The Bottom Line
5
DSLs Allow Faster Prototyping
Using the Spiral Model of Software Development
specify
specify
design
design
build
test
test
build
With DSL
Without DSL
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
(No Transcript)