[fpc-devel] Incomplete docs on operator precedence / Question about actual precedence
lazarus at mfriebe.de
Mon Feb 3 15:07:39 CET 2014
On 03/02/2014 13:47, Jonas Maebe wrote:
> On 03 Feb 2014, at 14:28, Martin Frb wrote:
>> The reason I did get to that, is because I have to reproduce the
>> behaviour (for fpdebug).
>> And when scanning/evaluating a pascal expression/statement, it works
>> well to handle the "." (and also ()^) as operator. So that is haw
>> the "." ended on the list.
> Can't you use fcl-passrc (http://wiki.freepascal.org/fcl-passrc )
> instead of scanning/parsing everything yourself? Or does it only
> support complete source files?
The example only shows how to parse a full file.
All I need is to parse any of the following
SomeFoo + Bar
Bar(Abc).xyz^ // Bar may be a class, or a function
At the time of parsing nothing else is known, the types / values can be
looked up during parsing.
This are only right hand site expressions. This are NOT full pascal
statements (since the result := part is not there)
They may result in a value, or a type. (or be invalid)
I already have the parser (that part was rather simple). And it returns
a structure of objects, that can deal with the rest of the work (getting
type/value and evaluate).
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