webmcp
annotate framework/env/execute/wrapped.lua @ 175:20e393d2e6e1
Completed comments and minor code cleanup in JSON library; Added emergency garbage collection for memory allocation in json.export function
| author | jbe |
|---|---|
| date | Fri Aug 01 21:54:45 2014 +0200 (2014-08-01) |
| parents | 9fdfb27f8e67 |
| children |
| rev | line source |
|---|---|
| jbe/bsw@0 | 1 --[[-- |
| jbe/bsw@0 | 2 execute.wrapped( |
| jbe/bsw@0 | 3 wrapper_func, -- function with an execute.inner() call inside |
| jbe/bsw@0 | 4 inner_func -- function which is executed when execute.inner() is called |
| jbe/bsw@0 | 5 ) |
| jbe/bsw@0 | 6 |
| jbe/bsw@0 | 7 This function takes two functions as argument. The first function is executed, and must contain one call of execute.inner() during its execution. When execute.inner() is called, the second function is executed. After the second function finished, program flow continues in the first function. |
| jbe/bsw@0 | 8 |
| jbe/bsw@0 | 9 --]]-- |
| jbe/bsw@0 | 10 |
| jbe/bsw@0 | 11 function execute.wrapped(wrapper_func, inner_func) |
| jbe/bsw@0 | 12 if |
| jbe/bsw@0 | 13 type(wrapper_func) ~= "function" or |
| jbe/bsw@0 | 14 type(inner_func) ~= "function" |
| jbe/bsw@0 | 15 then |
| jbe/bsw@0 | 16 error("Two functions need to be passed to execute.wrapped(...).") |
| jbe/bsw@0 | 17 end |
| jbe/bsw@0 | 18 local stack = execute._wrap_stack |
| jbe/bsw@0 | 19 local pos = #stack + 1 |
| jbe/bsw@0 | 20 stack[pos] = inner_func |
| jbe/bsw@0 | 21 wrapper_func() |
| jbe/bsw@0 | 22 -- if stack[pos] then |
| jbe/bsw@0 | 23 -- error("Wrapper function did not call execute.inner().") |
| jbe/bsw@0 | 24 -- end |
| jbe/bsw@0 | 25 stack[pos] = nil |
| jbe/bsw@0 | 26 end |