Foundations of Software - LAMP - EPFL

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Domain-Specific Languages � The grammar description language is an example <strong>of</strong> a domain-specific language (DSL). � The parser generator acts as a processor (“compiler”) for this language — that’s why it’s sometimes called grandly a “compiler-compiler”. � Example <strong>of</strong> a “program” in the grammar description DSL: Expr ::= Term {’+’ Term | ’−’ Term}. Term ::= Factor {’∗’ Factor | ’/’ Factor}. Factor ::= Number | ’(’ Expr ’)’. 24
Embedded Domain Specific Languages � An alternative to a stand-alone DSL is an Embedded DSL. � Here, the DSL does not exist as a separate language but as an API in a host language. � The host language is usually a general purpose programming language. We will now develop this approach for grammar description languages. 25
Page 1 and 2: Foundations of Software Martin Oder
Page 3 and 4: What is “software foundations”?
Page 5 and 6: What you can expect to get out of t
Page 7 and 8: What this course is not � An intr
Page 9 and 10: Overview This course will concentra
Page 11 and 12: Organization of the Course 11
Page 13 and 14: Information Textbook: Types and Pro
Page 15 and 16: Homework and Projects You will be a
Page 17 and 18: Learning Scala If you don’t know
Page 19 and 20: Collaboration � Collaboration on
Page 21 and 22: Part I Modelling programming langua
Page 23: Approaches to Parsing There are two
Page 27 and 28: � Option [...] is now expressed b
Page 29 and 30: The Basic Idea For each language (i
Page 31 and 32: In each case, chars represents the
Page 33 and 34: Object-Oriented Parser Combinators
Page 35 and 36: Specific Single-Token Parsers � T
Page 37 and 38: The Sequence Combinator � The seq
Page 39 and 40: The Alternative Combinator � The
Page 41 and 42: Result Conversion The parser P ˆˆ
Page 43 and 44: The Interleaved Repetition Combinat
Page 45 and 46: An Example: JSON JSON, or JavaScrip
Page 47 and 48: Testing the JSON Parser Add a metho
Page 49 and 50: Getting Better Output � The resul
Page 51 and 52: Table of Parser Combinators ident i
Page 53 and 54: A Problem with Top-Down Parsing As
Page 55 and 56: ... and reduce is defined as follow

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