Dpdl Examples

			www.dpdl.io

Dpdl sample Applications

More advanced sample applications written with Dpdl that serve as demonstrators are published in this repository:

Dpdl-sample-Apps

These examples are demonstrators but are full running applications.

Dpdl sample code (Examples)

Basic

Example Dpdl Code with Array definition, population and access using an 'Iterator'

test/testArray.h
Example Dpdl code that makes use of the type 'class'

test/testClass.h
Example Dpdl code that makes use of derived type 'class' (Inheritance and Polymorphism). Some functions make use of embedded code (java and C)

test/testClassSub2.h
Example Dpdl code that makes use of the type 'struct'

test/testStruct3.h
Dynamic Array definition, population and access

arraylistExample.h
Example Dpdl code that loads and accesses natively the 'libc' shared library functions

native/dpdlTestNative.h
Example Dpdl code that writes and reads a data buffer to a file using the native library functions in 'libc'

native/dpdlNativeExample.h
Example Dpdl code that shows how exceptions can be raised and handled

testRaiseException.h
Example Dpdl code that shows how to initialize a 'class' type with constructor, and without constructor

test/testClassConstructor.h
Example Dpdl code that shows how to initialize 'struct' member variables upon declaration

test/testStructInit.h
Example Dpdl code that uses vec(...), map(...), list(...) and stack(...) data functions

test/testDataFuncTypes.h
Example Dpdl code that make use of the 'typedef' specifier

test/testTypeDef.h
Example Dpdl code that launches multiple threads

concurrent/testConcurrency1.h
Example Dpdl code that make use of the >>task keyword to execute embedded Dpdl code sections asynchronously

test/testTask.h
Load a Dpdl script object "LoadCodeFunc.h" via 'loadCode(..)' and call one of its functions

testLoadCode.h

LoadCodeFunc.h
Embedding and executing structured code resources

test/testCodeExec.h
Example Dpdl code that makes use of pointers and references

dpdlPointers.h
Example Dpdl code that updates the fields of a struct type via a dedicated thread

test/testStructThread.h
Inline execution of Dpdl code

dpdlCodeExecExample.h
Example Dpdl code (dummy) that shows some functionalities of Dpdl

dpdl_overview.h
Example Dpdl code that shows how C code and Java can be embedded and executed within Dpdl

app/simple/dpdlSimpleJavaAndC.h

Special

Execute a Dpdl script continuously in a dedicated Thread instance

dpdl_startup.h
Uses the Dpdl API library DoubleEmul and FloatEmul to emulate floating point and double precision math operations

dpdlFloatDoubleEmul.h
Example Dpdl code that converts/compiles a 'struct' to a native java bytecode object and accesses member variables and methods

test/testGenObjCode.h
Example program written in C that shows how to execute a given Dpdl script from C code

embed_dpdl/test_dpdl_code_exec.c
Example program written in C that shows how to execute embedded Dpdl code within C code

embed_dpdl/test_dpdl_code_exec2.c

Data

Example Dpdl code that parses an XML document with the xml pull parser

xml/dpdlXMLParser.h
Parse JSON file and access data types

json/testDpdlJSON.h
Parse JSON file and decode data into a struct

json/dpdlDecodeJSON.h
Example Dpdl code that performs HTTP requests (GET, POST and PUT)

http/dpdlHttpExample.h
Example Dpdl code that makes use of multi-line structured text resources

test/testResource.h
Example Dpdl code that compresses and de-compresses a string of data using the Java platform API

dataCompress.h
Example Dpdl code that embeds and executed an SQL query on a defined database and retrieves and prints out the result

sql/dpdlSqlExample.h
Example Dpdl code that embeds and executed an SQL query on a defined database and retrieves and prints out the result (same as above), and encodes the result set into a json string, than decodes the json string to an object that can be accessed

sql/dpdlSqlExampleJson.h
Save and access data from a record store

rs/recordStoreExample.h
Test read and write access to record stores

testRSConcurrency.h
Simple console application to allocate and perform queries on the supplied DpdlPacket dpdl_PHONEBOOK. The script allows to perform single queries, or n sequential or random queries, and measures the execution time. Comment or uncomment the following line of code in the script -> i #abs(search_rand_int)

dpdlpacket/testDpdlDB2.h
Dpdl code that shows how to read and write data to a virtual record store filesystem

fs/dpdlVirtualFS.h

GPU Compute

The following Dpdl examples show how to exploit capabilities of a GPU via embedded 'Wgsl' and 'OCL' code sections

Dpdl sample code that makes use of the Dpdl language plug-in 'dpdlopencl' to execute embedded OCL code (OpenCL)

opencl/dpdlOpenCLTest.h
Example Dpdl code that make use of Wgsl (WebGPU shading language) to speed-up computations for a high-performing neural network activation function (GELU) directly on GPUs

wgsl/dpdlWgslTest.h

AI generative code using the Dpdl langage plugin 'DpdlAINerd'

The following examples make use of the Dpdl langage plugin 'DpdlAINerd (DAN)' to automatically generate embedded code sections in various programming languages within Dpdl which can than be executed right away on the DpdlEngine.

Example Dpdl code that makes use of the Dpdl language plugin 'DpdlAINerd' (DAN) to automatically generate a simple SNAKE Game console application (written in C) via AI generative code using DeepSeek AI Models.

ai/dpdlAISnakeGame.h

The code is generated, compiled and executed in a single step

The code above 'ai/dpdlAISnakeGame.h' automatically generated the following Dpdl code with embedded C: ai/dpdlAISnakeGame_gen.h

The AI engine used in this case was the available 'DeepSeek' model. No adaptations were needed to successfully run the program right away.

Example Dpdl code that leverages generative AI using the 'DpdlAINerd' (DAN) Dpdl language plug-in to generate embedded code sections which can than be executed

ai/dpdlAICodeSort.h

The code above automatically generated the following Dpdl code: ai/dpdlAICodeSort_gen.h

Example Dpdl code that leverages AI using the 'DpdlAINerd' (DAN) Dpdl language plug-in to generate a json test dataset

ai/dpdlAITestData.h
Example Dpdl code that leverages AI using the 'DpdlAINerd' (DAN) Dpdl language plug-in to generate and execute embedded code right away

ai/dpdlAITestExec.h

this program Output:

this is my sample json:
{
  "documentType": "National ID",
  "issuingCountry": "United States",
  "issuingAuthority": "Department of Motor Vehicles",
  "documentNumber": "123456789",
  "issueDate": "2020-05-15",
  "expiryDate": "2030-05-15",
  "personalDetails": {
    "firstName": "John",
    "middleName": "Michael",
    "lastName": "Doe",
    "dateOfBirth": "1985-07-20",
    "gender": "Male",
    "placeOfBirth": "New York, USA",
    "nationality": "American"
  },
  "address": {
    "street": "123 Main St",
    "city": "New York",
    "state": "NY",
    "postalCode": "10001",
    "country": "USA"
  },
  "biometricData": {
    "photo": "base64EncodedPhotoString",
    "signature": "base64EncodedSignatureString",
    "fingerprints": {
      "leftThumb": "base64EncodedFingerprint",
      "rightThumb": "base64EncodedFingerprint"
    }
  },
  "additionalInformation": {
    "height": "180 cm",
    "eyeColor": "Brown",
    "bloodType": "O+",
    "organDonor": true
  },
  "securityFeatures": {
    "barcode": "base64EncodedBarcode",
    "mrz": "P<USADOE<<JOHN<MICHAEL<<<<<<<<<<<<<<<<<<<<<<<1234567890USA8507201M3005159<<<<<<<<<<<<<<02",
    "chip": {
      "encryptedData": "base64EncodedEncryptedData",
      "publicKey": "base64EncodedPublicKey"
    }
  }
}

Graphical User Interface (UI)

Example Dpdl app that uses the JavaFX java library to create a sample UI (Graphical User Interface) application via a FXML definition and used CSS to create the layout.

ui/dpdlGUIJavaFX_css.h
Example Dpdl code that uses the JavaFX java library to render UI (Graphical User Interface) elements via a FXML definition.

ui/dpdlGUIJavaFX.h
Drawing functions on a UI Canvas on J2ME devices

J2MEDrawDemo.h
Creates a graphical user interface with some UI components (Button, Panel, Checkbox, List, draw Panel) using Java Swing classes. The list is updated, the button command is intercepted with the 'actionPerformed' function, the checkbox status is printed to stdout, and a text and rectangle is drawn at random location on the draw panel using a thread.

ui/dpdlGUIExample.h

Small Apps

Example Dpdl code that downloads json news data from a given URL and decodes it to a struct

app/getnews/dpdlGetNews.h
Implementation of SHA-1 hash algorithm entirely written in Dpdl

app/dpdlSHA-1/dpdlSHA-1impl.h
Example Dpdl app that uses the JavaFX library to render and animate a 3D model of a chemical molecule (hydrogen)

graphics/dpdl3DJavaFX_molecule.h

VIDEO of Dpdl sample 3D application
Example Dpdl code that executes an embedded 'clojure' code that creates a simple UI to convert values from Celsius to Fahrenheit

clj/dpdlCljCelsiusConverterGUI.h
Example Dpdl code that executes an embedded 'Julia' script to plot data using the 'Plots' package, and to save the chart as PDF

julia/dpdlJuliaPlot.h

here the exported PDF:
Example Dpdl app that uses the JavaFX java library to visualize a website within a WebView component

ui/dpdlGUIJavaFX_web.h
Performs a discovery of bluetooth devices and saves the device addresses discovered in a record store

bluetoothDiscoverySave.h
Downloads a html website from a URL and saves the content in a local file

downloadWebURL.h
Accepts connections from a bluetooth server application and intercepts commands

DpdlConsoleBT_client.h

DpdlConsoleBT_client.h_static
BTObexServer (client/server)

Sample application that implements sending of SMS via bluetooth to discovered devices. The messages to be sent are read from a record store. An auxiliary script (ImportantMsgWriter.h) can be used to store messages to be delivered in the record store

BTObexServer/BTObexServer.h

BTObexServer/BTObexServer.h_static

HTTPServer:

Simple client server application to send and receive broadcasted messages via HTTP protocol.

HTTPServer/HTTPServer.h

HTTPClient/HTTPServer.h

How to run:

  1) start the server: HTTPServer/HTTPServer.h
  
  2) start the 1st client: HTTPServer/HTTPClient.h
  
  3) start the 2nd client, but first change the CLIENT_ID in the HTTPClient.h script

CoAP (client/server):

Client server application that implements PUT, GET, OBSERVE requests via CoAP (Constrained Application Protocol). The clients can create resources and perform PUT, GET or OBSERVE requests on the resources created.

Once the dpdlCoAPServer.h is started, the observe client (dpdlCoAPClient.h) can be initialized in a 2nd console, and a second client (dpdlCoAPClient2.h) that performs PUT requests can be initialized in a 3rd console by starting it in a dedicated thread via the script 'startClientThread.h'

CoAP/dpdlCoAPServer.h

CoAP/dpdlCoAPClient.h

CoAP/dpdlCoAPClient2.h

CoAP/startClientThread.h

How to run:
```
  1) start the server: CoAP/dpdlCoAPServer.h
  
  2) start the 1st client: CoAP/dpdlCoAPClient.h
  
  3) start the 2nd client in a thread instance: CoAP/startClientThread.h
```

Dpdl language plug-ins (embeddable programming languages)

Example with embedded C code execution within Dpdl (interpreted Mode 1)

C/dpdlSample.h
Example with embedded C code execution within Dpdl that is compiled in memory at runtime (compiled Mode 1)

C/dpdlCcompile.h
Example Dpdl code that shows how C code and Python can be embedded and executed within Dpdl

dpdlFullExample.h
Example Dpdl code that shows how MicroPython code can be embedded and executed within Dpdl. MicroPython is suitable for embedded systems.

micropython/dpdlMicroPythonTest.h
Example Dpdl code that makes use of an embedded Java code block to perform a dummy calculation on an array passed from Dpdl

java/dpdlJavaExample2.h
Embedded C code execution within Dpdl code

dpdlSimpleC.h
Embedded Python code execution within Dpdl code

python/dpdlEmbedPython.h
Embedded Lua code execution within Dpdl code

lua/dpdlLuaBufRet.h
Embedded Ruby code execution within Dpdl code

ruby/dpdlRubyExample.h
Embedded V code execution within Dpdl code (fibonacci sequence)

v/dpdlVFibonacci.h
Example Dpdl code that embeds C++ code and uses ROOT API libraries to solve a linear equations in 4 different ways

root/dpdlRootSolver.h
Example Dpdl code that embeds javascript code (with Mode2 using 'qjs') that loads an object implemented in a native C library (see point.c)

js/dpdlQJsPoint.h
Example Dpdl code that compiles a WebAssembly WAT code to WASM binary format and calls the exported functions from both, Dpdl and javascript

wasm/dpdlWasmTest.h
Dpdl code that compiles two WebAssembly modules (in WAT code), with 1st module that exports functions to the 2nd module, to WASM binary format. The function 'add_and_sub' exported by the 2nd module is than called from Dpdl

wasm/dpdlWasmModules.h
Example Dpdl code with embedded ANSI C code that is compiled in memory and executed at runtime, the result is than intercepted

C/dpdlCcompileBufRet.h
Example Dpdl code that executes an embedded 'Julia' script to download data via HTTP via url's contained in json data

julia/dpdlJuliaPlot.h
Example Dpdl code that executes an embedded 'groovy' code (dummy)

groovy/dpdlGroovyExample.h
Example Dpdl code embedding ANSI C code (ISO C99) that is dynamically compiled in memory at runtime (fast) and executed

C/dpdlCcompileExample.h
Example Dpdl code that embeds JavaScript that intercepts some parameters that have been pushed on the dpdl stack

js/dpdlJsExample.h
Example Dpdl code that embeds Clojure code

clj/dpdlCljExample.h
Example Dpdl code (embedded C code compiled at runtime) that launches threads (pThreads) to sum numbers

C/dpdlCThreadExample.h
Example Dpdl code that shows to to execute embedded C code accepting parameters pushed on the dpdl_stack, and writes some result back to a buffer variable. The execution time is measured.

bench/testC.h
Example Dpdl code that embeds 'Julia' code to execute a set of threads that call a native C Dpdl API function

julia/dpdlJuliaThread.h
Example Dpdl code that embeds 'PHP' code to read a CSV file, count the number of fields in each line and print the values

php/dpdlPhpTest4.h

Benchmark Tests

Simple benchmark to measure the execution speed of Dpdl function calls with access to JRE objects

benchmarks/dpdlBenchTest1.h
Simple benchmark to measure the execution speed of different embedded code sections including Dpdl, Java, C (interpreted), C (compiled), JavaScript and Clojure

benchmarks/dpdlBenchTest2.h
Simple benchmark to measure the execution speed of 'struct' function calls (with embedded Java code), compiled and executed with java bytecode

benchmarks/dpdlBenchTest3.h
Simple benchmark to measure the execution speed of embedded javascript executed within a dedicated dpdl thread

benchmarks/dpdlBenchTest4.h
Simple test that executes some 'task' asynchronously

benchmarks/dpdlBenchTest5.h
Simple benchmark that makes use of 'class'

benchmarks/dpdlBenchTest6.h

More Tests

Small 'dummy' sample application

app/dummy/dpdl_sample.h
Set of 14 examples/tests. The examples make use of @TAG execution to allow execution of each individual example.

dpdlLibExamples.h
```
 -load
 dpdlLibExamples.h @TEST1
 
 -load
 dpdlLibExamples.h @TEST2 etc..
 
 ....
```

How to run the examples

The Dpdl example scripts are located in the './DpdlLibs/' folder and can be executed in different ways:

or directly via the '-load' parameter at startup
using the DpdlClient console application with commands
or using the API function call DPDLAPI_execCode(..).

The script path per default configuration need to be relative to the './DpdlLibs/' folder

1) At startup with the '-load' command

java --add-opens java.base/sun.net.www.protocol.http=ALL-UNNAMED --add-opens java.base/sun.net.www.protocol.https=ALL-UNNAMED -jar DpdlEngine_V1.0_release.jar -load test/testArray.h

Note: On newer versions of java (from Oracle), in order to access specific java 'modules' within Dpdl, you may need to enable them with the option '--add-opens'

2) `DpdlClient` console application

-load
enter the Dpdl script name to execute:
arraylistExample.h [@TEST1]

3) Using the Dpdl API

println("executing dpdl script...")
int s = DPDLAPI_execCode("mydpdlscript.h")
println("status: " + s)

The Dpdl sample scripts and Dpdl sample applications published on this repository are released under the MIT License.

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Dpdl_Examples.md

Dpdl_Examples.md

Dpdl Examples

Dpdl sample Applications

Dpdl sample code (Examples)

Basic

Special

Data

GPU Compute

AI generative code using the Dpdl langage plugin 'DpdlAINerd'

Graphical User Interface (UI)

Small Apps

Dpdl language plug-ins (embeddable programming languages)

Benchmark Tests

More Tests

How to run the examples

1) At startup with the '-load' command

2) `DpdlClient` console application

3) Using the Dpdl API

Files

Dpdl_Examples.md

Latest commit

History

Dpdl_Examples.md

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Dpdl Examples

Dpdl sample Applications

Dpdl sample code (Examples)

Basic

Special

Data

GPU Compute

AI generative code using the Dpdl langage plugin 'DpdlAINerd'

Graphical User Interface (UI)

Small Apps

Dpdl language plug-ins (embeddable programming languages)

Benchmark Tests

More Tests

How to run the examples

1) At startup with the '-load' command

2) DpdlClient console application

3) Using the Dpdl API

2) `DpdlClient` console application