X-Git-Url: https://ruin.nu/git/?a=blobdiff_plain;f=documentation;h=d649bbaedbe29fe03f586ac9699b30c70b0f4348;hb=2c2f90fca1005f6dedc69ee7f3d7c5072e5c123b;hp=70bd0c818b7f8c298ca3658a67729c6413db122b;hpb=ef4659dbfa5051372cf067f8c0ed2bbe77146650;p=proglang.git diff --git a/documentation b/documentation index 70bd0c8..d649bba 100644 --- a/documentation +++ b/documentation @@ -1,23 +1,12 @@ ####### DOCUMENTATIATOIAITAT ION ######## -a simple c-like language with support for if/else-statements, while-loops and the standard arithmetic (+, -, /, *) and comparison expressions (<, >, <=, >=, ==, !=). also, post increase/decrease expressions (++, --) are supported. Assignments are allowed in expressions, but they are only allowed on the right side of arithmetic/comparision operators if they are put inside parenthesis - - -data types: -integers and booleans. - -comments: -// and /* */ comments are allowed. - -(For compilation to work the Bool type in Abssyntax has to be removed so the internal haskell type is used) - -shift/reduce conflicts: - -if with else: 1 conflict -An if statement before the else could be reduced to an if statement lacking the else, but the correct thing is to shift it onto the stack. +Files: +Typechecker.hs: Simple modification of the bnfc-generated Testsyntax which calls the type-checking functions. +Typecheck.hs: Contains the type-checking functions typeCheckExp, typeCheckVar and typeCheckStm and some utility functions, responsible for the entire type-checking process. +Abssyntax.hs, Parsyntax.y, Lexsyntax.x,ErrM.hs,Printsyntax.hs,Skelsyntax.hs: The files generated by bnfc, only modification is the removal of the Bool type in Abssyntx.hs so haskell's internal type can be used. typing rules @@ -27,7 +16,6 @@ typing rules (t is little tau, T is large tau, E is 'in', and + is that other symbol) - [Eq, Neq] e:bool <= e1:t & e2:t