Language processor implementation using python

Nov 12, 2013Download as PPT, PDF2 likes855 views

This document describes the implementation of a language processor for the Pascal programming language using Python. It discusses choosing Python as the implementation language, the overall work scheme including a parser, syntax analyzer, semantic analyzer, and code generator. Details are provided on using YAML configuration files to define the language grammar, generating abstract syntax trees, and producing intermediate code. The goal is to create a parameterized language processor that can easily be adapted for other languages by changing the YAML configuration.

Language Processor Implementation
using Python

Objectiv
e


Implement parser, syntax analyzer, semantic
analyzer for Pascal language



Show main approaches to implementation of
semantic analysis as well as intermediary code
generation



Parameterize language processor

Choosing Programming
Language

I investigated strong and week points of
several programming languages:
 Java
 Perl
 Python
 C++
 Delphi
As a result I chose Python due to several very good
reasons.

Python
Benefits

High level programming language
 Supports object oriented paradigm
 Convenient data types
 Relatively fast due to using C based libraries
 Easy readable syntax
 Cross-platform
 Convenient tools for parsing YAML
 Supports regular expressions out of the box


Language Processor Work
Scheme
Entry

Parser

Syntax

Semantics

Code gen

Exit
Вихід
In memory tables

$Parser. Tokens Identifier ^[A-Za-z][A-Za-z_0-9]{0,255}$ Integer Const ^[+-]?d{1,10}$ Float Const ^([+-]?((d+.d+)|(d+.d+e[+-]d+)))$ String Literal ^'.{0,65535}'$$

Algorythm of Analyzing
Lexems

def getClass(self, word):
c = None
if ((word in self.KeyWords)
or (word in metadata["delimiters"])
or (word in metadata["double"])
or (word in metadata["conditional_delimiters"])
or (word in metadata["multiplicative"])
or (word in metadata["additive"])
or (word in metadata["Relation"])):
c = word
else:
for r in self.RegExp.keys():
if re.compile(r).match(word):
c = self.RegExp[r]
return c

Attribute Table



Separate class



Design pattern Singleton



Uses hash table as internal structure



Fast access



Convenient format

Syntax
Analyzer


Context free grammar



Left associated grammar



EBNF



Configuration format is yaml



Language grammar is easily changed without
source code modification

YAML Configuration Format
Benefits


Short and readable



yaml uses data structures that are native to
programming languages like Perl, Python

Configuration Format of Language
Grammar

EBNF

rule
program ::=
EBNF

Program ID ; block .

rule in configuration
programme:
- [program, id, ;, Block, "."]

Semantic Analyzer. Semantic
Actions
Rule

without semantic actions
complex_action:
- [begin, action_list, end]
Rule

with semantic actions
complex_action:
- [begin, "#200", action_list, end, "#220"]

Attribute
classes
Making

code generation process easier, I created a
bunch of classes like AttrFor.

class

AttrFor (AttrObject):

self.parameter = None
self.first = None
self.last = None
self.step = None
self.body = None

Intermediary code
generation
We

are using tetrads language in order to generate
intermediary code
How tetrads language looks:
Z := X op Y
Z := op X
Z := Y
Z := Y[X]
Z:
GOTO Z
If condition GOTO Z

Example of input file
program q;
var
a, b: integer;
i: integer;
d: integer;
begin
d := 4;
for i:= 1 to (2+2*2)*2 do
begin
b:=b + 1;
a:=a * 2;
end;
d:=a;
end.

Output of language processor using intermediary code

d:=4
i:=1
@Lid1:
if i > 12 goto @Lid2
b:=b + 1
a:=a * 2
i := i + 1
goto @Lid1
@Lid2:
d:=a

Bottom line


I implemented parser, syntax analyzer, semantic analyzer,
intermediary code generation of Pascal programming
language



I showed main concepts of semantic analysis as well as
intermediary code generation



Language processor has been parameterized

This document discusses functions in PHP. It explains that functions allow reusing code by defining reusable blocks of code that can be executed multiple times by calling the function. It provides examples of defining functions, passing parameters to functions, returning values from functions, and variable scope within functions. It also discusses including files in PHP to break programs into multiple files.

Cs3430 lecture 15Tanwir Zaman

This document provides an overview of a lecture on introduction to Perl programming. It discusses installing and running Perl programs, basic data types like numbers and strings, control structures, and operators. Perl can be used for tasks like web scripting, database programming, and rapid prototyping. It has advantages like being free, portable, and object-oriented, but also drawbacks such as sometimes being difficult to read. Resources for learning more about Perl are provided.

Anonymous Functions in PHP 5.3 - Matthew Weier O’PhinneyHipot Studio

Yacc (yet another compiler compiler)omercomail

Yacc lex915086731

This document provides an introduction to Yacc and Lex, which are parser and lexer generator tools. Yacc is used to describe the grammar of a language and automatically generate a parser. The user provides grammar rules in BNF format. Lex is used to generate a lexer (also called a tokenizer) that recognizes tokens in the input based on regular expressions. It returns tokens to the parser. The document gives examples of Yacc and Lex grammar files and explains how they are compiled and used to build a parser for an input language.

PHPLinqMaarten Balliauw

This document introduces PHPLinq, a PHP library that provides Language Integrated Query (LINQ) capabilities. It allows querying different data sources like objects, databases, XML, and Azure using a common LINQ-like syntax. The document provides an overview of LINQ, demonstrates basic PHPLinq usage with examples, and discusses available PHPLinq providers for different data sources. It encourages questions and provides contact details for the author.

Class 3 - PHP FunctionsAhmed Swilam

This document outlines PHP functions including function declaration, arguments, returning values, variable scope, static variables, recursion, and useful built-in functions. Functions are blocks of code that perform tasks and can take arguments. They are declared with the function keyword followed by the name and parameters. Functions can return values and arguments are passed by value by default but can also be passed by reference. Variable scope inside functions refers to the local scope unless specified as global. Static variables retain their value between function calls. Recursion occurs when a function calls itself. Useful built-in functions include function_exists() and get_defined_functions().

Introduction to php php++Tanay Kishore Mishra

PHP originated as a tool for personal home pages created by Rasmus Lerdorf. It is now known as the PHP Hypertext Processor and is an open source, scripting language commonly used for web development. PHP scripts can be embedded into HTML pages and allow for easy access to form data and output of dynamic HTML. PHP is a procedural language like C with some object-oriented features. It has an extensive function library that supports tasks like string handling, dates/times, files, databases and more. PHP follows a model where scripts run on the server and generate HTML to be sent to the client browser.

Why Java Sucks and C# Rocks (Final)jeffz

The document compares and contrasts the Java and C# programming languages. It summarizes that Java is not fully object-oriented as it uses primitive types, while C# makes all types objects. It also discusses various language features introduced over time, showing that C# often introduced useful features earlier than Java, such as generics and LINQ. The document provides code examples to demonstrate how tasks can be expressed more declaratively and concisely in C# compared to Java.

LEX & YACC TOOLPUNE VIDYARTHI GRIHA'S COLLEGE OF ENGINEERING, NASHIK

This document provides an overview of Lex and Yacc, which are tools used for generating scanners and parsers. Lex is used for lexical analysis by generating a scanner from regular expressions and actions. Yacc is used for syntactic analysis by generating a parser from a context-free grammar and semantic actions. Together, the scanner generated by Lex and parser generated by Yacc can be used to build a compiler. The document discusses various aspects of Lex and Yacc like grammar rules, precedence, shift-reduce conflicts and provides examples of Lex and Yacc files.

Php Chapter 2 3 TrainingChris Chubb

PHP Unit 3 functions_in_php_2Kumar

The document discusses functions in PHP. It defines what a function is and some key properties like having a unique name, performing independent tasks without interfering with other code, and optionally returning values. It provides examples of built-in PHP functions for arrays, characters, and numbers. It also covers user-defined functions, passing arguments by value and reference, variable scopes, and using static variables in functions.

Lex tool manualSami Said

This document provides an overview of Lex, a lexical analyzer generator tool. It discusses installing and running Lex on Windows and Linux systems, and provides an example Decaf programming language lexical analyzer code. The code is run on sample input to generate a tokenized output file. The document contains sections on what Lex is, the structure of Lex programs, predefined Lex variables and library routines, setting up and running Lex on different platforms, and an example Decaf program with its output.

TI1220 Lecture 14: Domain-Specific LanguagesEelco Visser

The document outlines concepts covered in a programming languages course, including syntax and semantics, names and bindings, data types, functional programming, polymorphism, parsing and interpretation, modular programming, concurrency, and domain-specific languages. It also lists various languages as examples, such as Scala, JavaScript, C, and internal DSLs in languages like Haskell and Ruby. Finally, it discusses domain-specific languages and provides examples including spreadsheet formulas, query languages, graph layout languages, web languages, game scripting languages, and modeling languages.

Lex ToolRajan Shah

This document discusses language processing development tools (LPDTs) that focus on generating the analysis phase of language processors. It specifically describes Lexical Analyzers and the LEX tool. LEX accepts an input specification with regular expressions that define the tokens/terminals of a language. It then generates a lexical analyzer that tokenizes the input stream. The analyzer identifies lexical units, classifies them, and builds descriptor tokens containing a class code and number. It also performs semantic actions like entering identifiers and numbers into symbol tables.

Perl bhargavBhargav Reddy

This document provides an introduction to the Perl programming language, including: - A brief history of Perl's development and origins drawing from other languages like C and shell scripting. - An overview of the major Perl versions released since 1987. - Descriptions of Perl's basic program structure, data types, control structures, input/output capabilities, functions, and object-oriented features like encapsulation and inheritance. - Examples are provided to illustrate Perl's syntax and capabilities for variables, comments, arithmetic, strings, arrays, hashes, conditionals, loops, file handling and defining custom functions. - The document concludes by providing a link to a demo Perl project online.

Ch4ckinnarshah8888

The document discusses syntax analysis and creating parsers using Yacc/Bison. It provides examples of writing grammars and semantic actions for simple arithmetic expressions. Key points covered include: - Yacc/Bison generate LALR(1) parsers from grammar specifications - A Yacc specification contains declarations, translation rules (productions with semantic actions), and auxiliary C functions - Productions define the grammar, semantic actions associate values with terminals/nonterminals - Attributes refer to semantic values, precedence levels resolve ambiguity - Lex/Flex is used to generate a lexical analyzer from regular expressions to interface with the parser

PHP 7.0 new features (and new interpreter)Andrea Telatin

YaccBBDITM LUCKNOW

Yacc is a general tool for describing the input to computer programs. It generates a LALR parser that analyzes tokens from Lex and creates a syntax tree based on the grammar rules specified. Yacc was originally developed in the 1970s and generates C code for the syntax analyzer from a grammar similar to BNF. It has been used to build compilers for languages like C, Pascal, and APL as well as for other programs like document retrieval systems.

Ltr 1 PowerpointMary Chu

This document discusses next generation library catalogs and compares them to legacy catalogs. It outlines problems with legacy catalogs like complex interfaces and limited functionality. Next generation catalogs aim to provide a single point of entry, state of the art interfaces, enriched content, enhanced search methods, and web 2.0 features. Specific next generation catalogs discussed include Aqua Browser, Endeca, Encore, Primo, and WorldCat Local. Each is described in one to two sentences focusing on key features and functionality.

Боломж систем MNBЭнхбаяр Д.

Doing Azure With PowerShellThomas Lee

The document discusses using PowerShell to manage Azure resources. It begins with introducing the speaker and their background in PowerShell and Azure. It then provides an overview of PowerShell and Azure, including what PowerShell is, what Azure is, and how to get started using PowerShell with Azure. The document demonstrates how to create virtual machines and networks in Azure using PowerShell cmdlets. It also demonstrates how to create and use Azure file storage with PowerShell. The document emphasizes that using PowerShell makes automating Azure tasks easy and the Azure PowerShell cmdlets are constantly evolving.

PowerShell 101 - What is it and Why should YOU Care!Thomas Lee

PowerShell 101 provides an overview of PowerShell, including what it is, how it works, and why it is important for Windows administrators. PowerShell is a task automation platform and scripting language that makes Windows administration easier. It uses cmdlets, objects, and the pipeline model where cmdlets produce and consume objects that can be piped between commands. PowerShell is built into Windows and provides discoverability through commands like Get-Help and Get-Member. It offers advantages over traditional shells like being faster, more repeatable, and reducing errors.

Linux Introduction (Commands)anandvaidya

This document provides a summary of the Unix and GNU/Linux command line. It begins with an overview of files and file systems in Unix, including that everything is treated as a file. It then discusses command line interpreters (shells), and commands for handling files and directories like ls, cd, cp, and rm. It also covers redirecting standard input/output, pipes, and controlling processes. The document is intended as training material and provides a detailed outline of its contents.

Learn 90% of Python in 90 MinutesMatt Harrison

Introduction to PythonNowell Strite

This document provides an introduction and overview of the Python programming language. It covers Python's history and key features such as being object-oriented, dynamically typed, batteries included, and focusing on readability. It also discusses Python's syntax, types, operators, control flow, functions, classes, imports, error handling, documentation tools, and popular frameworks/IDEs. The document is intended to give readers a high-level understanding of Python.

A Brief Overview of (Static) Program Query LanguagesKim Mens

Python programming workshop session 1Abdul Haseeb

The document provides an overview of a hands-on workshop on the Python programming language conducted by Abdul Haseeb for a faculty development program. The workshop covers the basics of Python including its history, design philosophy, why it is popular, how to get started with the Python IDE, basic data types, variables, operators, input/output functions, and differences between Python versions 2 and 3. Examples are provided to demonstrate various Python concepts like strings, integers, floats, lists, tuples, dictionaries, functions to convert between types, and string operations. Comparisons between Python and C/C++ highlight differences in syntax, commenting, error handling and code readability.

More Related Content

What's hot (13)

Class 3 - PHP FunctionsAhmed Swilam

Introduction to php php++Tanay Kishore Mishra

Why Java Sucks and C# Rocks (Final)jeffz

LEX & YACC TOOLPUNE VIDYARTHI GRIHA'S COLLEGE OF ENGINEERING, NASHIK

Php Chapter 2 3 TrainingChris Chubb

PHP Unit 3 functions_in_php_2Kumar

Lex tool manualSami Said

TI1220 Lecture 14: Domain-Specific LanguagesEelco Visser

Lex ToolRajan Shah

Perl bhargavBhargav Reddy

Ch4ckinnarshah8888

PHP 7.0 new features (and new interpreter)Andrea Telatin

YaccBBDITM LUCKNOW

Class 3 - PHP FunctionsAhmed Swilam

Introduction to php php++Tanay Kishore Mishra

Why Java Sucks and C# Rocks (Final)jeffz

LEX & YACC TOOLPUNE VIDYARTHI GRIHA'S COLLEGE OF ENGINEERING, NASHIK

Php Chapter 2 3 TrainingChris Chubb

PHP Unit 3 functions_in_php_2Kumar

Lex tool manualSami Said

TI1220 Lecture 14: Domain-Specific LanguagesEelco Visser

Lex ToolRajan Shah

Perl bhargavBhargav Reddy

Ch4ckinnarshah8888

PHP 7.0 new features (and new interpreter)Andrea Telatin

YaccBBDITM LUCKNOW

Viewers also liked (7)

Ltr 1 PowerpointMary Chu

Боломж систем MNBЭнхбаяр Д.

Doing Azure With PowerShellThomas Lee

PowerShell 101 - What is it and Why should YOU Care!Thomas Lee

Linux Introduction (Commands)anandvaidya

Learn 90% of Python in 90 MinutesMatt Harrison

Introduction to PythonNowell Strite

Ltr 1 PowerpointMary Chu

Боломж систем MNBЭнхбаяр Д.

Doing Azure With PowerShellThomas Lee

PowerShell 101 - What is it and Why should YOU Care!Thomas Lee

Linux Introduction (Commands)anandvaidya

Learn 90% of Python in 90 MinutesMatt Harrison

Introduction to PythonNowell Strite

Similar to Language processor implementation using python (20)

A Brief Overview of (Static) Program Query LanguagesKim Mens

Python programming workshop session 1Abdul Haseeb

Visual Studio .NET2010Satish Verma

PERTEMUAN 1 - MENGENAL ENVIRONTMENT PROGRAM VISUAL C#.pptxTriSandhikaJaya

This document introduces C# and provides an agenda that includes Hello World, the .NET Framework, the design goals of C#, and C# language features. The .NET Framework section describes the Common Language Runtime and services like ASP.NET and Windows Forms. The design goals section explains that C# is a component-oriented language that aims for simplicity, robustness, and preserving investments in other languages. The language features section provides an overview of key elements of the C# language like classes, structs, interfaces, and events.

Introduction to c_sharpJorge Antonio Contre Vargas

This document provides an introduction and overview of C# and the .NET framework. It begins with prerequisites and an agenda. It then demonstrates a simple "Hello World" program. It provides an overview of the .NET framework, including the common language runtime, base class library, and language interoperability. It discusses the design goals of C#, including it being component-oriented and everything being an object. It then covers various C# language features such as classes, interfaces, enums, delegates, events, attributes, and XML documentation comments. It also demonstrates creating a web service using attributes.

Python basicsRANAALIMAJEEDRAJPUT

The document provides an overview of the Python programming language. It discusses that Python is an easy to learn, high-level, open-source programming language. It describes Python's design philosophy of code readability and how it allows programmers to express concepts in fewer lines of code compared to languages like C++ and Java. The document also discusses Python's powerful libraries, wide use across industries, and how to get started with Python programming using the IDLE integrated development environment.

Intro in understanding to C programming .pptxabadinasargie

Groovy Introduction - JAX Germany - 2008Guillaume Laforge

Groovy is a dynamic language for the Java Virtual Machine that simplifies programming through features like closures, properties, and built-in support for lists, maps, ranges, and regular expressions. The latest version 1.5 adds support for Java 5 features like annotations and generics to leverage frameworks that use them. Groovy can be integrated into applications through mechanisms like JSR-223, Spring, and Groovy's own GroovyClassLoader to externalize business rules, provide extension points, and customize applications.

Presentation c++JosephAlex21

What we can learn from Rebol?lichtkind

Groovy Update - JavaPolis 2007Guillaume Laforge

This document provides an overview of Groovy, a dynamic language for the Java Virtual Machine. It discusses Groovy's features like properties, closures, and integration with Java. The document outlines what's new in Groovy 1.5, including Java 5 features like annotations and generics. It also covers how to integrate Groovy in applications using mechanisms like the GroovyShell and GroovyClassLoader. The presentation aims to help attendees learn about Groovy and how they can use it in their projects.

c programming session 1.pptxRSathyaPriyaCSEKIOT

This document provides an overview of C programming basics including problem formulation, problem solving, and the fundamentals of C programming. It discusses problem formulation as an iterative process involving decomposing problems into appropriate dimensions. It then covers problem solving methods and introduces C programming, describing its features, character set, tokens, variables, data types, operators, and the structure of a basic C program. It provides examples of programming concepts like input/output operations, decision making, looping, and solving simple problems in C.

An Overview Of Python With Functional ProgrammingAdam Getchell

This document provides an overview of the Python programming language and its capabilities for functional programming. It describes Python's attributes such as being portable, object-oriented, and supporting procedural, object-oriented, and functional programming. It also lists several popular Python modules that provide additional functionality and examples of code written in both a procedural and object-oriented style in Python. Finally, it provides examples of functional programming concepts like map, filter and reduce implemented in Python along with references for further information.

KScope14 Jython ScriptingAlithya

javaeanjjisjejrehurfhjhjfeauojksfjdi.ppteraqhuzay69

Introduction to c programmingAlpana Gupta

This document provides an overview of the C programming language, including its history, uses, basic environment, data types, variables, operators, control structures like if/else statements and loops. It begins with the origins of C in the 1970s and explains that C combines high- and low-level language features, making it useful for systems programming tasks like operating systems and compilers. Examples are provided throughout to illustrate core C concepts like getting user input, performing calculations, and repeating actions with for, while and do-while loops.

Java introductionMigrant Systems

This document provides a course syllabus for a Java training course. The syllabus outlines topics that will be covered including an overview of object-oriented programming in Java, important Java concepts like static, final, interface and abstract classes, exception handling, collections, generics, threads, JDBC, and J2EE technologies like JSP, Servlets, Struts and XML. It also discusses fees structure for the course and notes it will take place on Saturdays, Sundays and weekdays, with registration fees of Rs. 1000 and remaining Rs. 4000 to be paid during classes.

R and Python, A Code DemoVineet Jaiswal

This document provides a side-by-side comparison of code samples in R and Python for common data science tasks. It covers topics like IDEs, data operations, manipulation, visualization, machine learning, text mining and more. For each topic, the document lists the main packages/functions used in R and Python and provides brief code examples. The goal is to give beginners a basic introduction to how similar tasks are accomplished in both languages.

Introduction To Groovy 2005Tugdual Grall

The document introduces dynamic languages and provides examples comparing Java and Groovy implementations of a filtering task. It discusses the benefits of Groovy, including its Java-like syntax, dynamic typing, built-in support for lists/maps/arrays, closures, and additional libraries that simplify APIs. Groovy aims to integrate well with Java while adding meta-programming capabilities. The document provides examples of common uses of Groovy and its features.

A Brief Overview of (Static) Program Query LanguagesKim Mens

Python programming workshop session 1Abdul Haseeb

Visual Studio .NET2010Satish Verma

PERTEMUAN 1 - MENGENAL ENVIRONTMENT PROGRAM VISUAL C#.pptxTriSandhikaJaya

Introduction to c_sharpJorge Antonio Contre Vargas

Python basicsRANAALIMAJEEDRAJPUT

Intro in understanding to C programming .pptxabadinasargie

Groovy Introduction - JAX Germany - 2008Guillaume Laforge

Presentation c++JosephAlex21

What we can learn from Rebol?lichtkind

Groovy Update - JavaPolis 2007Guillaume Laforge

c programming session 1.pptxRSathyaPriyaCSEKIOT

An Overview Of Python With Functional ProgrammingAdam Getchell

KScope14 Jython ScriptingAlithya

javaeanjjisjejrehurfhjhjfeauojksfjdi.ppteraqhuzay69

Introduction to c programmingAlpana Gupta

Java introductionMigrant Systems

R and Python, A Code DemoVineet Jaiswal

Introduction To Groovy 2005Tugdual Grall

Recently uploaded (20)

Linux Professional Institute LPIC-1 Exam.pdfRHCSA Guru

Are Cloud PBX Providers in India Reliable for Small Businesses (1).pdfTelecoms Supermarket

Build Your Own Copilot & Agents For DevsBrian McKeiver

Quantum Computing Quick Research Guide by Arthur MorganArthur Morgan

This is a Quick Research Guide (QRG). QRGs include the following: - A brief, high-level overview of the QRG topic. - A milestone timeline for the QRG topic. - Links to various free online resource materials to provide a deeper dive into the QRG topic. - Conclusion and a recommendation for at least two books available in the SJPL system on the QRG topic. QRGs planned for the series: - Artificial Intelligence QRG - Quantum Computing QRG - Big Data Analytics QRG - Spacecraft Guidance, Navigation & Control QRG (coming 2026) - UK Home Computing & The Birth of ARM QRG (coming 2027) Any questions or comments? - Please contact Arthur Morgan at [email protected]. 100% human made.

Splunk Security Update | Public Sector Summit Germany 2025Splunk

tecnologias de las primeras civilizaciones.pdffjgm517

Noah Loul Shares 5 Steps to Implement AI Agents for Maximum Business Efficien...Noah Loul

Artificial intelligence is changing how businesses operate. Companies are using AI agents to automate tasks, reduce time spent on repetitive work, and focus more on high-value activities. Noah Loul, an AI strategist and entrepreneur, has helped dozens of companies streamline their operations using smart automation. He believes AI agents aren't just tools—they're workers that take on repeatable tasks so your human team can focus on what matters. If you want to reduce time waste and increase output, AI agents are the next move.

Transcript: #StandardsGoals for 2025: Standards & certification roundup - Tec...BookNet Canada

Book industry standards are evolving rapidly. In the first part of this session, we’ll share an overview of key developments from 2024 and the early months of 2025. Then, BookNet’s resident standards expert, Tom Richardson, and CEO, Lauren Stewart, have a forward-looking conversation about what’s next. Link to recording, presentation slides, and accompanying resource: https://bnctechforum.ca/sessions/standardsgoals-for-2025-standards-certification-roundup/ Presented by BookNet Canada on May 6, 2025 with support from the Department of Canadian Heritage.

Generative Artificial Intelligence (GenAI) in BusinessDr. Tathagat Varma

TrsLabs - Fintech Product & Business ConsultingTrs Labs

Hybrid Growth Mandate Model with TrsLabs Strategic Investments, Inorganic Growth, Business Model Pivoting are critical activities that business don't do/change everyday. In cases like this, it may benefit your business to choose a temporary external consultant. An unbiased plan driven by clearcut deliverables, market dynamics and without the influence of your internal office equations empower business leaders to make right choices. Getting things done within a budget within a timeframe is key to Growing Business - No matter whether you are a start-up or a big company Talk to us & Unlock the competitive advantage

AI and Data Privacy in 2025: Global TrendsInData Labs

In this infographic, we explore how businesses can implement effective governance frameworks to address AI data privacy. Understanding it is crucial for developing effective strategies that ensure compliance, safeguard customer trust, and leverage AI responsibly. Equip yourself with insights that can drive informed decision-making and position your organization for success in the future of data privacy. This infographic contains: -AI and data privacy: Key findings -Statistics on AI data privacy in the today’s world -Tips on how to overcome data privacy challenges -Benefits of AI data security investments. Keep up-to-date on how AI is reshaping privacy standards and what this entails for both individuals and organizations.

Dev Dives: Automate and orchestrate your processes with UiPath MaestroUiPathCommunity

This session is designed to equip developers with the skills needed to build mission-critical, end-to-end processes that seamlessly orchestrate agents, people, and robots. 📕 Here's what you can expect: - Modeling: Build end-to-end processes using BPMN. - Implementing: Integrate agentic tasks, RPA, APIs, and advanced decisioning into processes. - Operating: Control process instances with rewind, replay, pause, and stop functions. - Monitoring: Use dashboards and embedded analytics for real-time insights into process instances. This webinar is a must-attend for developers looking to enhance their agentic automation skills and orchestrate robust, mission-critical processes. 👨‍🏫 Speaker: Andrei Vintila, Principal Product Manager @UiPath This session streamed live on April 29, 2025, 16:00 CET. Check out all our upcoming Dev Dives sessions at https://community.uipath.com/dev-dives-automation-developer-2025/.

Rusty Waters: Elevating Lakehouses Beyond Sparkcarlyakerly1

Spark is a powerhouse for large datasets, but when it comes to smaller data workloads, its overhead can sometimes slow things down. What if you could achieve high performance and efficiency without the need for Spark? At S&P Global Commodity Insights, having a complete view of global energy and commodities markets enables customers to make data-driven decisions with confidence and create long-term, sustainable value. 🌍 Explore delta-rs + CDC and how these open-source innovations power lightweight, high-performance data applications beyond Spark! 🚀

Andrew Marnell: Transforming Business Strategy Through Data-Driven InsightsAndrew Marnell

TrsLabs Consultants - DeFi, WEb3, Token ListingTrs Labs

Heap, Types of Heap, Insertion and DeletionJaydeep Kale

Designing Low-Latency Systems with Rust and ScyllaDB: An Architectural Deep DiveScyllaDB

Want to learn practical tips for designing systems that can scale efficiently without compromising speed? Join us for a workshop where we’ll address these challenges head-on and explore how to architect low-latency systems using Rust. During this free interactive workshop oriented for developers, engineers, and architects, we’ll cover how Rust’s unique language features and the Tokio async runtime enable high-performance application development. As you explore key principles of designing low-latency systems with Rust, you will learn how to: - Create and compile a real-world app with Rust - Connect the application to ScyllaDB (NoSQL data store) - Negotiate tradeoffs related to data modeling and querying - Manage and monitor the database for consistently low latencies

HCL Nomad Web – Best Practices und Verwaltung von Multiuser-Umgebungenpanagenda

Webinar Recording: https://www.panagenda.com/webinars/hcl-nomad-web-best-practices-und-verwaltung-von-multiuser-umgebungen/ HCL Nomad Web wird als die nächste Generation des HCL Notes-Clients gefeiert und bietet zahlreiche Vorteile, wie die Beseitigung des Bedarfs an Paketierung, Verteilung und Installation. Nomad Web-Client-Updates werden “automatisch” im Hintergrund installiert, was den administrativen Aufwand im Vergleich zu traditionellen HCL Notes-Clients erheblich reduziert. Allerdings stellt die Fehlerbehebung in Nomad Web im Vergleich zum Notes-Client einzigartige Herausforderungen dar. Begleiten Sie Christoph und Marc, während sie demonstrieren, wie der Fehlerbehebungsprozess in HCL Nomad Web vereinfacht werden kann, um eine reibungslose und effiziente Benutzererfahrung zu gewährleisten. In diesem Webinar werden wir effektive Strategien zur Diagnose und Lösung häufiger Probleme in HCL Nomad Web untersuchen, einschließlich - Zugriff auf die Konsole - Auffinden und Interpretieren von Protokolldateien - Zugriff auf den Datenordner im Cache des Browsers (unter Verwendung von OPFS) - Verständnis der Unterschiede zwischen Einzel- und Mehrbenutzerszenarien - Nutzung der Client Clocking-Funktion

Web and Graphics Designing Training in RajpuraErginous Technology

Web & Graphics Designing Training at Erginous Technologies in Rajpura offers practical, hands-on learning for students, graduates, and professionals aiming for a creative career. The 6-week and 6-month industrial training programs blend creativity with technical skills to prepare you for real-world opportunities in design. The course covers Graphic Designing tools like Photoshop, Illustrator, and CorelDRAW, along with logo, banner, and branding design. In Web Designing, you’ll learn HTML5, CSS3, JavaScript basics, responsive design, Bootstrap, Figma, and Adobe XD. Erginous emphasizes 100% practical training, live projects, portfolio building, expert guidance, certification, and placement support. Graduates can explore roles like Web Designer, Graphic Designer, UI/UX Designer, or Freelancer. For more info, visit erginous.co.in , message us on Instagram at erginoustechnologies, or call directly at +91-89684-38190 . Start your journey toward a creative and successful design career today!

Massive Power Outage Hits Spain, Portugal, and France: Causes, Impact, and On...Aqusag Technologies

Linux Professional Institute LPIC-1 Exam.pdfRHCSA Guru

Are Cloud PBX Providers in India Reliable for Small Businesses (1).pdfTelecoms Supermarket

Build Your Own Copilot & Agents For DevsBrian McKeiver

Quantum Computing Quick Research Guide by Arthur MorganArthur Morgan

Splunk Security Update | Public Sector Summit Germany 2025Splunk

tecnologias de las primeras civilizaciones.pdffjgm517

Noah Loul Shares 5 Steps to Implement AI Agents for Maximum Business Efficien...Noah Loul

Transcript: #StandardsGoals for 2025: Standards & certification roundup - Tec...BookNet Canada

Generative Artificial Intelligence (GenAI) in BusinessDr. Tathagat Varma

TrsLabs - Fintech Product & Business ConsultingTrs Labs

AI and Data Privacy in 2025: Global TrendsInData Labs

Dev Dives: Automate and orchestrate your processes with UiPath MaestroUiPathCommunity

Rusty Waters: Elevating Lakehouses Beyond Sparkcarlyakerly1

Andrew Marnell: Transforming Business Strategy Through Data-Driven InsightsAndrew Marnell

TrsLabs Consultants - DeFi, WEb3, Token ListingTrs Labs

Heap, Types of Heap, Insertion and DeletionJaydeep Kale

Designing Low-Latency Systems with Rust and ScyllaDB: An Architectural Deep DiveScyllaDB

HCL Nomad Web – Best Practices und Verwaltung von Multiuser-Umgebungenpanagenda

Web and Graphics Designing Training in RajpuraErginous Technology

Massive Power Outage Hits Spain, Portugal, and France: Causes, Impact, and On...Aqusag Technologies

Language processor implementation using python

1. Language Processor Implementation using Python

2. Objectiv e  Implement parser, syntax analyzer, semantic analyzer for Pascal language  Show main approaches to implementation of semantic analysis as well as intermediary code generation  Parameterize language processor

3. Choosing Programming Language I investigated strong and week points of several programming languages:  Java  Perl  Python  C++  Delphi As a result I chose Python due to several very good reasons.

4. Python Benefits High level programming language  Supports object oriented paradigm  Convenient data types  Relatively fast due to using C based libraries  Easy readable syntax  Cross-platform  Convenient tools for parsing YAML  Supports regular expressions out of the box 

5. Language Processor Work Scheme Entry Parser Syntax Semantics Code gen Exit Вихід In memory tables

6. Parser. Tokens Identifier ^[A-Za-z][A-Za-z_0-9]{0,255}$ Integer Const ^[+-]?d{1,10}$ Float Const ^([+-]?((d+.d+)|(d+.d+e[+-]d+)))$ String Literal ^'.{0,65535}'$

7. Algorythm of Analyzing Lexems def getClass(self, word): c = None if ((word in self.KeyWords) or (word in metadata["delimiters"]) or (word in metadata["double"]) or (word in metadata["conditional_delimiters"]) or (word in metadata["multiplicative"]) or (word in metadata["additive"]) or (word in metadata["Relation"])): c = word else: for r in self.RegExp.keys(): if re.compile(r).match(word): c = self.RegExp[r] return c

8. Attribute Table  Separate class  Design pattern Singleton  Uses hash table as internal structure  Fast access  Convenient format

9. Attribute Table Look

10. Syntax Analyzer  Context free grammar  Left associated grammar  EBNF  Configuration format is yaml  Language grammar is easily changed without source code modification

11. YAML Configuration Format Benefits  Short and readable  yaml uses data structures that are native to programming languages like Perl, Python

12. Configuration Format of Language Grammar EBNF rule program ::= EBNF Program ID ; block . rule in configuration programme: - [program, id, ;, Block, "."]

13. Semantic Analyzer. Semantic Actions Rule without semantic actions complex_action: - [begin, action_list, end] Rule with semantic actions complex_action: - [begin, "#200", action_list, end, "#220"]

14. Attribute classes Making code generation process easier, I created a bunch of classes like AttrFor. class AttrFor (AttrObject): self.parameter = None self.first = None self.last = None self.step = None self.body = None

15. Abstract Parse Tree

16. Intermediary code generation We are using tetrads language in order to generate intermediary code How tetrads language looks: Z := X op Y Z := op X Z := Y Z := Y[X] Z: GOTO Z If condition GOTO Z

17. Example of input file program q; var a, b: integer; i: integer; d: integer; begin d := 4; for i:= 1 to (2+2*2)*2 do begin b:=b + 1; a:=a * 2; end; d:=a; end.

18. Output of language processor using intermediary code d:=4 i:=1 @Lid1: if i > 12 goto @Lid2 b:=b + 1 a:=a * 2 i := i + 1 goto @Lid1 @Lid2: d:=a

19. Bottom line  I implemented parser, syntax analyzer, semantic analyzer, intermediary code generation of Pascal programming language  I showed main concepts of semantic analysis as well as intermediary code generation  Language processor has been parameterized

Language processor implementation using python

Recommended

More Related Content

What's hot (13)

Viewers also liked (7)

Similar to Language processor implementation using python (20)

Recently uploaded (20)

Language processor implementation using python