Estimated hours taken: 6
If calling from the internal debugger, use readline input for the
interactive term browser and interactive queries.
browser/browse.m:
Change some if-then-elses to switches, which will help
catch errors if a new functor is added to the debugger type.
browser/parse.m:
browser/util.m:
Return a string from util__trace_getline/4 rather than a
list of chars, which saves converting from a string to a list
of chars and then back again.
browser/util.m:
Add a version of util__trace_getline that also takes I/O
stream arguments. Pass these arguments to MR_trace_getline.
browser/declarative_oracle.m:
Call util__trace_getline/4 to do input via readline (if
available). Improve error handling.
browser/interactive_query.m:
Call util__trace_getline to get user input, instead of
standard library predicates.
runtime/mercury_init.h:
runtime/mercury_wrapper.c:
runtime/mercury_wrapper.h:
trace/mercury_trace_internal.c:
trace/mercury_trace_internal.h:
Add two I/O stream arguments to MR_trace_getline.
Estimated hours taken: 5
Use the same method of input for the browser as for the internal
tracer. Previously, the browser did input via the Mercury library
and the internal tracer did input via readline (if available). This
did not work properly if files were redirected into stdin, which meant
that test cases could not be written for the browser. This change
also adds a test case.
browser/util.m:
Add a predicate, util__trace_getline/4, which does input via
the same method used by the internal debugger.
browser/parse.m:
Call util__trace_getline/4 instead of io__read_line/3.
browser/browse.m:
Pass the prompt to browser/parse.m as a string, rather than
printing it before calling.
trace/mercury_trace_internal.c:
trace/mercury_trace_internal.h:
Declare MR_trace_getline extern.
runtime/mercury_init.h:
runtime/mercury_wrapper.c:
runtime/mercury_wrapper.h:
util/mkinit.c:
Make MR_trace_getline available to the browser via a function
pointer.
tests/debugger/Mmakefile:
Add the new test case.
tests/debugger/browser_test.m:
tests/debugger/browser_test.inp:
tests/debugger/browser_test.exp:
The new test case.
runtime/mercury_trace_base.c:
runtime/mercury_trace_base.h:
Export MR_tracing_not_enabled() for use by browser/util.m.
Estimated hours taken: 40
Add a simple term browser for use by the trace-based debugger.
This is minimal but useful browser. Not included in this version
are a scripting language, Windows Explorer-style tree expansion,
and other features not yet thought of.
N.B. This still needs to be hooked into the debugger.
browser/Mmakefile:
Added target browse_test.
browser/browser_library.m:
Added modules required for the browser.
browser/browse_test.m:
A simple driver for the browser with an example
data structure to browse. (new file)
browser/browse.m:
The browser proper. (new file)
browser/parse.m:
Parser for browser's command language. (new file)
browser/util.m:
Miscellaneous utilities used in the browser code. (new file)
browser/frame.m:
Bare minimal ASCII graphics frames. (new file)
