B4A-Interpreter
I've made a B4A interpreter that runs B4A-Code on Android
to write easy B4A-test programs on my Phone.
To make an app only copy the source code back to the B4A IDE and compile it to an apk file.
Everbody is invited to expand this interpreter.
in this first version the interpreter can only create panels with click event and set colors
The new src is attached down here.
B4AInterpreter0_4.zip...
here is the source code from the first version (androidb4a.zip)
activity : main
class module: aPanel
The Test Code: test.b4a (file.dirAssets)
I've made a B4A interpreter that runs B4A-Code on Android
to write easy B4A-test programs on my Phone.
To make an app only copy the source code back to the B4A IDE and compile it to an apk file.
Everbody is invited to expand this interpreter.
in this first version the interpreter can only create panels with click event and set colors
The new src is attached down here.
B4AInterpreter0_4.zip...
here is the source code from the first version (androidb4a.zip)
activity : main
B4X:
Sub Process_Globals
End Sub
Sub Globals
Dim editCode As EditText
Dim code As String
Dim bStart As Button
Dim apan As apanel 'activity panel
End Sub
Sub Activity_Create(FirstTime As Boolean)
code=File.ReadString(File.DirAssets,"test.b4a")
editCode.Initialize("editcode")
editCode.Text=code
Activity.addview(editCode,0%x,8%y,100%x,42%y)
bStart.Initialize("bstart")
bStart.Text="Start >"
Activity.addview(bStart,0,0,28%x,8%y)
apan.Initialize
bStart_click
Activity.addview(apan.pmain,0,50%y,100%x,50%y)
End Sub
Sub editCode_click
editCode.BringToFront
End Sub
Sub RemoveViews
Dim i As Int
For i=apan.pmain.NumberOfViews-1 To 0 Step -1
apan.pmain.RemoveViewAt(i)
Next
End Sub
Sub bStart_click
RemoveViews
Dim command As String
Dim e As Boolean
initGlobals
runSub( "Activity_Create(FirstTime As Boolean)")
End Sub
Sub runSub(command As String)
Dim e As Boolean
command=runAt(command)
Do Until e
runCode(command)
command=runAt(command)
If command.IndexOf("End Sub")>-1 Then e=True
Loop
End Sub
Sub getValues(objectProp As String)As String()
Dim apos, epos,count As Int
Dim s1,s2 As String
Dim v(10) As String
apos=objectProp.IndexOf("(")
If apos>-1 Then
epos=objectProp.IndexOf(")")
s1=objectProp.SubString2(apos+1,epos)
apos=0
Dim findEnd As Boolean
Do Until findEnd
epos=s1.IndexOf2(",",apos+1)
If epos<0 Then
findEnd=True
epos=s1.Length
End If
v(count)=s1.SubString2(apos,epos)
count=count+1
apos=epos+1
Loop
End If
Return v
End Sub
Sub getFunction(objectProp As String)As String
If objectProp.IndexOf("(") >-1 Then Return objectProp.SubString2(0,objectProp.IndexOf("("))
If objectProp.IndexOf("=") >-1 Then Return objectProp.SubString2(0,objectProp.IndexOf("="))
End Sub
Sub runCode(command)
Dim apos, epos, index As Int
Dim objectType,objectName, objectProp ,eventName,functionsName As String
Dim params(10) As String
objectName=command.SubString2(1,command.IndexOf("."))
objectProp=command.SubString(command.IndexOf(".")+1)
functionsName=getFunction(objectProp)
params=getValues(objectProp)
index=apan.findindex(objectName)
If functionsName="Initialize" Then
eventName=params(0)
initview(objectName,eventName)
End If
If functionsName="AddView" Then
params=getValues(objectProp)
index=apan.findindex(params(0))
addview(apan.p(index),params)
End If
If functionsName.IndexOf("Color=")>-1 Then
params=getValues(objectProp)
index=apan.findindex(objectName)
apan.p(index).Color=Colors.RGB(params(0),params(1),params(2))
End If
End Sub
Sub runAt(subname As String)As String
Dim apos, epos As Int
Dim findstr As String
apos=code.IndexOf2(subname,apos)
epos=code.IndexOf2(Chr(13),apos+subname.Length+3)
findstr=code.SubString2(apos+subname.Length+1,epos)
Return findstr
End Sub
Sub initGlobals
'in this first Version it define all Dim .. as of the hole code
Dim apos, epos As Int
Dim findEnd As Boolean
Dim objectType,s1,objectName As String
Do Until findEnd
apos=code.IndexOf2("Dim",apos)
epos=code.IndexOf2("Dim",apos+1)
If epos=-1 Then
findEnd=True
epos=code.IndexOf2("End Sub",apos+1)
End If
s1=code.SubString2(apos+3,epos)
objectName=s1.SubString2(0,s1.IndexOf("As"))
objectType=s1.SubString2(s1.IndexOf("As")+2,s1.Length)
apan.makeDim(objectName,objectType)
apos=epos
Loop
End Sub
Sub addview(o As View,pa() As String)
Dim i(4) As Int
i(0)=pa(1)
i(1)=pa(2)
i(2)=pa(3)
i(3)=pa(4)
apan.pmain.addview(o,i(0),i(1),i(2),i(3))
End Sub
Sub initview(objectName As String,eventName As String)
Dim index As Int
index=apan.findindex(objectName)
apan.Initialize2(objectName,eventName)
apan.event(index)=eventName
End Sub
Sub editcode_TextChanged (Old As String, New As String)
code=editCode.Text
End Sub
Sub editcode_EnterPressed
End Sub
Sub editcode_FocusChanged (HasFocus As Boolean)
End Subclass module: aPanel
B4X:
'Class module
Sub Class_Globals
Dim pmain As Panel
Dim objectCount As Int
Dim p(100) As Panel
Dim b(100) As Button
Dim tag(100) As String
Dim name(100) As String
Dim event(100) As String
Dim art(100) As String
End Sub
Public Sub makeDim(objectName As String,objectType As String)
name(objectCount)=objectName
art(objectCount)=objectType
objectCount=objectCount+1
End Sub
Public Sub Initialize2(objectName As String,eventname As String)
Dim index As Int
index=findindex(objectName)
p(index).Initialize("pevent")
p(index).tag=index
name(index)=objectName
End Sub
Public Sub Initialize()
pmain.Initialize("acty")
pmain.Color=Colors.Blue
End Sub
Sub acty_click
pmain.BringToFront
End Sub
Sub findindex(objectName As String) As Int
For m = 0 To objectCount-1
If name(m).trim=objectName.trim Then Return m
Next
End Sub
Sub pevent_click
Dim send As Panel
Dim index As Int
Dim s1 As String
send=Sender
index=send.tag
s1=name(index)&"_click"
CallSub2(Main,"runSub",s1.Trim)
End SubThe Test Code: test.b4a (file.dirAssets)
B4X:
Sub Process_Globals
End Sub
Sub Globals
Dim p As Panel
Dim pf As Panel
Dim pg As Panel
Dim b As Button
End Sub
Sub Activity_Create(FirstTime As Boolean)
p.Initialize("p")
p.Color=Colors.RGB(233,55,244)
Activity.AddView(p,1,133,222,111)
End Sub
Sub Activity_Resume
End Sub
Sub Activity_Pause (UserClosed As Boolean)
End Sub
Sub p_click
pf.Initialize("pf")
pf.Color=Colors.RGB(244,33,55)
Activity.AddView(pf,252,33,222,111)
End Sub
Sub pf_click
pg.Initialize("pg")
pg.Color=colors.RGB(33,255,22)
Activity.AddView(pg,252,233,222,111)
End Sub
Sub pg_click
pf.Color=Colors.RGB(133,255,229)
p.Color=Colors.RGB(233,255,2)
End Sub
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