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Paper Analysis

Implementing Multi-stage Languages Using ASTs, Gensym, and Reflection by Calcagno, Taha, Huang, and Leroy. Paper Analysis. What kind of paper is it?. Mostly an analysis paper, analyzing MetaOcaml Discussion of under-the-hood implementation of MetaOcaml

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Paper Analysis

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  1. Implementing Multi-stage Languages Using ASTs, Gensym, and Reflection by Calcagno, Taha, Huang, and Leroy Paper Analysis

  2. What kind of paper is it? • Mostly an analysis paper, analyzing MetaOcaml • Discussion of under-the-hood implementation of MetaOcaml • More formalized description of MetaOcaml than the papers we've seen on MetaML • Mathematical proof of correctness of MetaOcaml • Performance measurements

  3. What kind of paper is it? • From our point of view, we could also consider it partly a synthesis paper and an extension paper • Brings staged languages together with mathematical proofs and formalization • Extends staged languages discussion to more technical and detailed aspects • Not really a new idea paper • Doesn't seem to do anything not done by MetaML

  4. What previous work is necessary to understand this paper? • Some knowledge of staged languages • Some compiler topics • Abstract syntax trees • General idea of what a compiler does

  5. The Problem • Same problems as in the MetaML papers in extending one- and two-stage languages • Approaches it from a different point of view

  6. Structure • General description • Formal syntax of Multi-stage source language • Formal syntax of Single-stage target language • Translation of source to target (and then decompilation) • Proof of correctness • Some implementation details • Performance analysis

  7. Evaluating a multi-stage language • Translate the multi-stage language into a single-stage language • Evaluate the single-stage language • Decompile the result

  8. ASTs, Gensym, Reflection • Abstract Syntax Trees • Used in translating multi-stage to single-staged • Gensym • Generating symbols when translating • Reflection?

  9. Multi-stage source language

  10. Single-stage target language

  11. Translation • Translate from multi-stage (source) to single-stage (target) • Abstract syntax tree building • Symbol generation (gensym) • Run (called mor in the translation)

  12. Translation functions

  13. Decompilation • Inverts what happened during translation • Evaluates

  14. Decompilation functions

  15. Performance analysis

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