Dynamic TypoScript generation on template based principle - typo3

Question

Is it possible to generate some parts of TypoScript templates in dynamic way ?
For example, I have a TS template with defined placeholders. I would like to fill it with an array of values (defined in dB, or with TS array of constants), to get filled TypoScript template on the output.
Probably an extension already exists, or it's a hidden core functionality ?
UPDATE :
Just small examples, which could illustrate the use of such demand.
Example 1
[globalVar=IENV:TYPO3_HOST_ONLY = subdomain1.domain.com]
config.baseURL = http://subdomain1.domain.com/
config.googleMapKey = AAABBBCCCDDDEEEFFF
[global]
[globalVar=IENV:TYPO3_HOST_ONLY = subdomain2.domain.com]
config.baseURL = http://subdomain2.domain.com/
config.googleMapKey = AAABBBCCCDDDEEEGGG
[global]
Example 2
10 = COA
10 {
10 = TEXT
10 {
value = jquery.js
wrap = <script type="text/javascript" src="|"></script>
}
20 = TEXT
20 {
value = jquery.plugin.js
wrap = <script type="text/javascript" src="|"></script>
}
}

Answer 1

I am not sure, if i understood what you want to do, but f.e. your second example could be written like this:
10 = COA
10 {
10 = TEXT
10 {
value = jquery.js
wrap = <script type="text/javascript" src="|"></script>
}
20 < .10
20.value = jquery.plugin.js
}
And (untested!) you could also define an constant like:
ScriptTag (
10 = TEXT
10 {
value = undefined
wrap = <script type="text/javascript" src="|"></script>
}
)
And use this in your setup:
10 = COA
10 {
{$ScriptTag}
10.value = jquery.js
20 < .10
20.value = jquery.plugin.js
}

Answer 2

I am not aware of such a feature. And it sounds wrong too.
Can you describe a little more detailed what you want to archive?
You can of course hook into the TS rendering. In TS you have constands and you may use conditions, switch/case statements, etc.
You can also call a user function at any place that has stdWrap.