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pas2js
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* Generic webassembly JOB loader

Michael Van Canneyt 1 year ago
parent
63a8c9c137
commit
8ea30c73c1
5 changed files with 223 additions and 0 deletions
Split View Show Diff Stats
  1. 19 0
      demo/wasienv/job/host/README.md
  2. 2 0
      demo/wasienv/job/host/host-config-sample.js
  3. 26 0
      demo/wasienv/job/host/index.html
  4. 104 0
      demo/wasienv/job/host/wasmjobhost.lpi
  5. 72 0
      demo/wasienv/job/host/wasmjobhost.lpr

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demo/wasienv/job/host/README.md
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+This directory contains a generic pas2js program to load a webassembly
 
+module using JOB. 
+
 
+By default it loads demo.wasm, but by creating a file host-config.js with
 
+the following contents:
 
+```javascript
 
+var 
+  wasmFilename = "wasmdemo.wasm";
 
+```
 
+you can change the loaded file without needing to recompile the application.
 
+
 
+You can also specify the webassembly module to load in the hash part of the
 
+URL:
 
+
 
+```
 
+http://localhost:8080/index.html#wasmdemo.wasm
 
+```
 
+will achieve the same as the config file.
 
+

+ 2 - 0
demo/wasienv/job/host/host-config-sample.js
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+var 
+  wasmFilename = "wasmdemo.wasm";

+ 26 - 0
demo/wasienv/job/host/index.html
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+<!DOCTYPE html>
 
+<html lang="en">
 
+<head>
 
+    <meta charset="UTF-8">
 
+    <title>Wasm Javascript Object Bindings - Test bed</title>
 
+    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate"> <!-- Prevents caching -->
 
+    <meta http-equiv="Pragma" content="no-cache"> <!-- Legacy HTTP 1.0 backward compatibility -->
 
+    <meta http-equiv="Expires" content="0"> <!-- Proxies -->
 
+    <!-- In this file you can specify easily which .wasm file to load, 
+         no need to recompile the pas2js loader-->
 
+    <script src="host-config.js"></script>
 
+    <script src="wasmjobhost.js"></script>
 
+</head>
 
+<body>
 
+    <div>
 
+      <h3 >Webassembly JOB bindings test bed</h3>
 
+      <p>Console output:</p>
 
+      <div id="pasjsconsole">
 
+      </div>
 
+    </div>
 
+  <script>
 
+    rtl.showUncaughtExceptions=true;
 
+    rtl.run();
 
+  </script>
 
+</body>
 
+</html>

+ 104 - 0
demo/wasienv/job/host/wasmjobhost.lpi
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+<?xml version="1.0" encoding="UTF-8"?>
 
+<CONFIG>
 
+  <ProjectOptions>
 
+    <Version Value="12"/>
 
+    <General>
 
+      <Flags>
 
+        <MainUnitHasCreateFormStatements Value="False"/>
 
+        <MainUnitHasTitleStatement Value="False"/>
 
+        <MainUnitHasScaledStatement Value="False"/>
 
+        <Runnable Value="False"/>
 
+      </Flags>
 
+      <SessionStorage Value="InProjectDir"/>
 
+      <Title Value="BrowserDomTest1"/>
 
+      <UseAppBundle Value="False"/>
 
+      <ResourceType Value="res"/>
 
+    </General>
 
+    <CustomData Count="4">
 
+      <Item0 Name="MaintainHTML" Value="1"/>
 
+      <Item1 Name="Pas2JSProject" Value="1"/>
 
+      <Item2 Name="PasJSLocation" Value="BrowserTixeoDom"/>
 
+      <Item3 Name="PasJSWebBrowserProject" Value="1"/>
 
+    </CustomData>
 
+    <BuildModes>
 
+      <Item Name="Default" Default="True"/>
 
+    </BuildModes>
 
+    <PublishOptions>
 
+      <Version Value="2"/>
 
+      <UseFileFilters Value="True"/>
 
+    </PublishOptions>
 
+    <RunParams>
 
+      <FormatVersion Value="2"/>
 
+    </RunParams>
 
+    <Units>
 
+      <Unit>
 
+        <Filename Value="wasmjobhost.lpr"/>
 
+        <IsPartOfProject Value="True"/>
 
+      </Unit>
 
+      <Unit>
 
+        <Filename Value="index.html"/>
 
+        <IsPartOfProject Value="True"/>
 
+        <CustomData Count="1">
 
+          <Item0 Name="PasJSIsProjectHTMLFile" Value="1"/>
 
+        </CustomData>
 
+      </Unit>
 
+      <Unit>
 
+        <Filename Value="../../../packages/job/job_browser.pp"/>
 
+        <IsPartOfProject Value="True"/>
 
+        <UnitName Value="JOB_Browser"/>
 
+      </Unit>
 
+      <Unit>
 
+        <Filename Value="../../../packages/job/job_shared.pp"/>
 
+        <IsPartOfProject Value="True"/>
 
+        <UnitName Value="JOB_Shared"/>
 
+      </Unit>
 
+    </Units>
 
+  </ProjectOptions>
 
+  <CompilerOptions>
 
+    <Version Value="11"/>
 
+    <Target FileExt=".js">
 
+      <Filename Value="wasmjobhost"/>
 
+    </Target>
 
+    <SearchPaths>
 
+      <IncludeFiles Value="$(ProjOutDir)"/>
 
+      <OtherUnitFiles Value="../../../packages/job"/>
 
+      <UnitOutputDirectory Value="js"/>
 
+    </SearchPaths>
 
+    <Parsing>
 
+      <SyntaxOptions>
 
+        <AllowLabel Value="False"/>
 
+        <UseAnsiStrings Value="False"/>
 
+        <CPPInline Value="False"/>
 
+      </SyntaxOptions>
 
+    </Parsing>
 
+    <CodeGeneration>
 
+      <TargetOS Value="browser"/>
 
+    </CodeGeneration>
 
+    <Linking>
 
+      <Debugging>
 
+        <GenerateDebugInfo Value="False"/>
 
+        <UseLineInfoUnit Value="False"/>
 
+      </Debugging>
 
+    </Linking>
 
+    <Other>
 
+      <CustomOptions Value="-Jeutf-8
 
+-Jirtl.js
 
+-Jc
 
+-Jminclude"/>
 
+      <CompilerPath Value="$(pas2js)"/>
 
+    </Other>
 
+  </CompilerOptions>
 
+  <Debugging>
 
+    <Exceptions>
 
+      <Item>
 
+        <Name Value="EAbort"/>
 
+      </Item>
 
+      <Item>
 
+        <Name Value="ECodetoolError"/>
 
+      </Item>
 
+      <Item>
 
+        <Name Value="EFOpenError"/>
 
+      </Item>
 
+    </Exceptions>
 
+  </Debugging>
 
+</CONFIG>

+ 72 - 0
demo/wasienv/job/host/wasmjobhost.lpr
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+program wasmjobhost;
 
+
 
+{$mode objfpc}
 
+
 
+uses
 
+  BrowserConsole, JS, Types, Classes, SysUtils, Web, WasiEnv, WasiHostApp, JOB_Browser, JOB_Shared;
 
+
 
+var
 
+  wasmFilename : string; external name 'wasmFilename';
 
+
 
+
 
+Type
 
+
 
+  { TMyApplication }
 
+
 
+  TMyApplication = class(TBrowserWASIHostApplication)
 
+  Private
 
+    FBridge : TJSObjectBridge;
 
+  Public
 
+    constructor Create(aOwner : TComponent); override;
 
+    procedure DoRun; override;
 
+  end;
 
+
 
+
 
+constructor TMyApplication.Create(aOwner: TComponent);
 
+begin
 
+  inherited Create(aOwner);
 
+  FBridge:=TJSObjectBridge.Create(WasiEnvironment);
 
+  RunEntryFunction:='_initialize';
 
+end;
 
+
 
+procedure TMyApplication.DoRun;
 
+
 
+  function DoError(aValue: JSValue): JSValue;
 
+  begin
 
+    if isObject(aValue) then
 
+      if TJSObject(aValue) is TJSError then
 
+        Writeln('Failed to start webassembly: ',TJSError(aValue).message)
 
+      else if TObject(aValue) is Exception then
 
+        Writeln('Failed to start webassembly: ',Exception(aValue).message);
 
+  end;
 
+
 
+var
 
+  wasmmodule : string;
 
+
 
+begin
 
+  // Your code here
 
+  Terminate;
 
+  if isString(wasmFilename) then
 
+    WasmModule:=wasmFilename
 
+  else
 
+    begin
 
+    WasmModule:=ParamStr(1);
 
+    if WasmModule='' then
 
+      WasmModule:='demo.wasm';
 
+    end;
 
+  try
 
+    StartWebAssembly(wasmmodule,true).catch(@DoError);
 
+  except
 
+    on E : exception do
 
+  end;
 
+end;
 
+
 
+var
 
+  Application : TMyApplication;
 
+begin
 
+  ConsoleStyle:=DefaultCRTConsoleStyle;
 
+  HookConsole;
 
+  Application:=TMyApplication.Create(nil);
 
+  Application.Initialize;
 
+  Application.Run;
 
+end.