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检索条件"任意字段=Proceedings of the ACM Sigplan 2003 Conference on Programming Language Design and Implementation"

共 1287 条记录，以下是351-360 订阅

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Almost First-Class language Embedding Taming Staged Embedded DSLs 2015

Almost First-Class Language Embedding Taming Staged Embedded...

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14th acm sigplan International conference on Generative-programming - Concepts and Experiences (GPCE) co-located with SPLASH conference

作者： Scherr, Maximilian Chiba, Shigeru Univ Tokyo Tokyo Japan

ISBN: (纸本)9781450336871

Embedded domain-specific languages (EDSLs), inheriting a general-purpose language's features as well as look-and-feel, have traditionally been second-class or rather non-citizens in terms of host-language design. This makes sense when one regards them to be on the same level as traditional, non-EDSL library interfaces. However, this equivalence only applies to the simplest of EDSLs. In this paper we illustrate why this is detrimental when moving on to EDSLs that employ staging, i.e. program reification, by example of various issues that affect authors and users alike. We believe that if EDSLs are to be considered a reliable, language-like interface abstraction, they require exceptional attention and design scrutiny. Instead of unenforceable conventions, we advocate the acceptance of EDSLs as proper, i.e. almost first-class, citizens while retaining most advantages of pure embeddings. As a small step towards this goal, we present a pragmatic framework prototype for Java. It is based on annotations that explicate and document membership to explicit EDSL entities. In a nutshell, our framework identifies (annotated) method calls and field accesses as EDSL terms and dynamically constructs an abstract-syntax representation, which is eventually passed to a semantics-defining back end implemented by the EDSL author.

关键词： Java implementation embedded DSLs metaprogramming program transformation staging programming languages design

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Invertible Syntax Descriptions: Unifying Parsing and Pretty Printing

Invertible Syntax Descriptions: Unifying Parsing and Pretty ...

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3rd acm Haskell Symposium on Haskell

作者： Rendel, Tillmann Ostermann, Klaus Univ Marburg D-35032 Marburg Germany

ISBN: (纸本)9781450302524

Parsers and pretty-printers for a language are often quite similar, yet both are typically implemented separately, leading to redundancy and potential inconsistency. We propose a new interface of syntactic descriptions, with which both parser and pretty-printer can be described as a single program. Whether a syntactic description is used as a parser or as a pretty-printer is determined by the implementation of the interface. Syntactic descriptions enable programmers to describe the connection between concrete and abstract syntax once and for all, and use these descriptions for parsing or pretty-printing as needed. We also discuss the generalization of our programming technique towards an algebra of partial isomorphisms.

关键词： design languages embedded domain specific languages invertible computation parser combinators pretty printing

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Web Question Answering with Neurosymbolic Program Synthesis 2021

Web Question Answering with Neurosymbolic Program Synthesis

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42nd acm sigplan International conference on programming language design and implementation (PLDI)

作者： Chen, Qiaochu Lamoreaux, Aaron Wang, Xinyu Durrett, Greg Bastani, Osbert Dillig, Isil Univ Texas Austin Austin TX 78712 USA Univ Michigan Ann Arbor MI 48109 USA Univ Penn Philadelphia PA 19104 USA

ISBN: (纸本)9781450383912

In this paper, we propose a new technique based on program synthesis for extracting information from webpages. Given a natural language query and a few labeled webpages, our method synthesizes a program that can be used to extract similar types of information from other unlabeled webpages. To handle websites with diverse structure, our approach employs a neurosymbolic DSL that incorporates both neural NLP models as well as standard language constructs for tree navigation and string manipulation. We also propose an optimal synthesis algorithm that generates all DSL programs that achieve optimal F-1 score on the training examples. Our synthesis technique is compositional, prunes the search space by exploiting a monotonicity property of the DSL, and uses transductive learning to select programs with good generalization power. We have implemented these ideas in a new tool called WEBQA and evaluate it on 25 different tasks across multiple domains. Our experiments show that WEBQA significantly outperforms existing tools such as state-of-the-art question answering models and wrapper induction systems.

关键词： Program Synthesis programming by Example Web Information Extraction

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Decoupled Lifeguards: Enabling Path Optimizations for Dynamic Correctness Checking Tools 10

Decoupled Lifeguards: Enabling Path Optimizations for Dynami...

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acm sigplan conference on programming language design and implementation

作者： Ruwase, Olatunji Chen, Shimin Gibbons, Phillip B. Mowry, Todd C. Carnegie Mellon Univ Pittsburgh PA 15213 USA Intel Labs Pittsburgh Pittsburgh PA USA

ISBN: (纸本)9781450300193

Dynamic correctness checking tools (a.k.a. lifeguards) can detect a wide array of correctness issues, such as memory, security, and concurrency misbehavior, in unmodified executables at run time. However, lifeguards that are implemented using dynamic binary instrumentation (DBI) often slow down the monitored application by 10-50X, while proposals that replace DBI with hardware still see 3-8X slowdowns. The remaining overhead is the cost of performing the lifeguard analysis itself. In this paper, we explore compiler optimization techniques to reduce this overhead. The lifeguard software is typically structured as a set of event-driven handlers, where the events are individual instructions in the monitored application's dynamic instruction stream. We propose to decouple the lifeguard checking code from the application that it is monitoring so that the lifeguard analysis can be invoked at the granularity of hot paths in the monitored application. In this way, we are able to find many more opportunities for eliminating redundant work in the lifeguard analysis, even starting with well-optimized applications and hand-tuned lifeguard handlers. Experimental results with two lifeguard frameworks-one DBI-based and one hardware-assisted-show significant reduction in monitoring overhead.

关键词： design Performance Reliability Security Dynamic code optimizations Dynamic correctness checking Dynamic program analysis

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Can programming be liberated from the two-level style?: Multi-level programming with DeepJava 07

Can programming be liberated from the two-level style?: Mult...

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22nd International conference on Object-Oriented programming, Systems, languages and Applications

作者： Kuehne, Thomas Schreiber, Daniel Tech Univ Darmstadt Darmstadt Germany

ISBN: (纸本)9781595937865

Since the introduction of object-oriented programming few programming languages have attempted to provide programmers with more than objects and classes, i.e., more than two levels. Those that did, almost exclusively aimed at describing language properties - i. e., their metaclasses exert linguistic control on language concepts and mechanisms often in order to make the language extensible. In terms of supporting logical domain classification levels, however, they are still limited to two levels. In this paper we conservatively extend the object-oriented programming paradigm to feature an unbounded number of domain classification levels. We can therefore avoid the introduction of accidental complexity into programs caused by accommodating multiple domain levels within only two programming levels. We present a corresponding language design featuring "deep instantiation" and demonstrate its features with a running example. Finally, we outline the implementation of our compiler prototype and discuss the potentials of further developing our language design.

关键词： languages design domain metatypes ontological metamodeling deep characterization

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Modula-2 and Oberon

Modula-2 and Oberon

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3rd acm sigplan History of programming languages conference, HOPL-III

作者： Wirth, Niklaus ETH Zurich

ISBN: (纸本)9781595937667

This is an account of the development of the languages Modula-2 and Oberon. Together with their ancestors ALGOL 60 and Pascal they form a family called Algol-like languages. Pascal (1970) reflected the ideas of structured programming, Modula-2 (1979) added those of modular system design, and Oberon (1988) catered to the object-oriented style. Thus they mirror the essential programming paradigms of the past decades. Here the major language properties are outlined, followed by an account of the respective implementation efforts. The conditions and the environments in which the languages were created are elucidated. We point out that simplicity of design was the most essential guiding principle. Clarity of concepts, economy of features, efficiency and reliability of implementations were its consequences. © 2007 acm.

关键词： Computer programming languages

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Flexible Object Layouts Enabling Lightweight language Extensions by Intercepting Slot Access 11

Flexible Object Layouts Enabling Lightweight Language Extens...

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2011 acm International conference on Object Oriented programming Systems languages and Applications

作者： Verwaest, Toon Lungu, Mircea Nierstrasz, Oscar Bruni, Camillo Univ Bern Software Composit Grp CH-3012 Bern Switzerland INRIA Lille Nord Europe RMoD Lille France

ISBN: (纸本)9781450309400

programming idioms, design patterns and application libraries often introduce cumbersome and repetitive boilerplate code to a software system. language extensions and external DSLs (domain specific languages) are sometimes introduced to reduce the need for boilerplate code, but they also complicate the system by introducing the need for language dialects and inter-language mediation. To address this, we propose to extend the structural reflective model of the language with object layouts, layout scopes and slots. Based on the new reflective language model we can 1) provide behavioral hooks to object layouts that are triggered when the fields of an object are accessed and 2) simplify the implementation of state-related language extensions such as stateful traits. By doing this we show how many idiomatic use cases that normally require boilerplate code can be more effectively supported. We present an implementation in Smalltalk, and illustrate its usage through a series of extended examples.

关键词： Reflection Smalltalk Structural Reflection Metaobject Protocol Traits

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proceedings of an acm conference on language design for Reliable Software 1977

Proceedings of an ACM Conference on Language Design for Reli...

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acm conference on language design for Reliable Software 1977

The proceedings contain 14 papers. The topics discussed include: gypsy: a language for specification and implementation of verifiable programs;notes on the design of euclid;efficient implementation and optimization of run-time checking in PASCAL;a study of protection in programming languages;towards the ideal programming language;restricted data types, specification and enforcement of invariant properties of variables;static determination of dynamic properties of generalized type unions;an experimental investigation of the effect of program structure on program understanding;process structuring, synchronization, and recovery using atomic actions;and abstraction and verification in ALPHARD: defining and specifying iteration and generators.

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implementation and evaluation of fusion and contraction in array languages

Implementation and evaluation of fusion and contraction in a...

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proceedings of the 1998 Annual acm sigplan conference on programming language design and implementation, PLDI

作者： Lewis, E.Christopher Lin, Calvin Snyder, Lawrence Univ of Washington Seattle WA United States

Array languages such as Fortran 90, HPF and ZPL have many benefits in simplifying array-based computations and expressing data parallelism. However, they can suffer large performance penalties because they introduce intermediate arrays - both at the source level and during the compilation process - which increase memory usage and pollute the cache. Most compilers address this problem by simply scalarizing the array language and relying on a scalar language compiler to perform loop fusion and array contraction. We instead show that there are advantages to performing a form of loop fusion and array contraction at the array level. This paper describes this approach and explains its advantages. Experimental results show that our scheme typically yields runtime improvements of greater than 20% and sometimes up to 400%. In addition, it yields superior memory use when compared against commercial compilers and exhibits comparable memory use when compared with scalar languages. We also explore the interaction between these transformations and communication optimizations.

关键词： FORTRAN (programming language)

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LoCal: A language for Programs Operating on Serialized Data 2019

LoCal: A Language for Programs Operating on Serialized Data

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40th acm sigplan conference on programming language design and implementation (PLDI) part of acm's Federated Computing Research conference (FCRC)

作者： Vollmer, Michael Koparkar, Chaitanya Rainey, Mike Sakka, Laith Kulkarni, Milind Newton, Ryan R. Indiana Univ Comp Sci Bloomington IN 47405 USA Purdue Univ Elect & Comp Engn W Lafayette IN 47907 USA

ISBN: (纸本)9781450367127

In a typical data-processing program, the representation of data in memory is distinct from its representation in a serialized form on disk. The former has pointers and arbitrary, sparse layout, facilitating easy manipulation by a program, while the latter is packed contiguously, facilitating easy I/O. We propose a language, LoCal, to unify in-memory and serialized formats. LoCal extends a region calculus into a location calculus, employing a type system that tracks the byte-addressed layout of all heap values. We formalize LoCal and prove type safety, and show how LoCal programs can be inferred from unannotated source terms. We transform the existing Gibbon compiler to use LoCal as an intermediate language, with the goal of achieving a balance between code speed and data compactness by introducing just enough indirection into heap layouts, preserving the asymptotic complexity of traditional representations, but working with mostly or completely serialized data. We show that our approach yields significant performance improvement over prior approaches to operating on packed data, without abandoning idiomatic programming with recursive functions.

关键词： Region Calculus Compiler Optimization Data Encoding Tree Traversal

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