X-Git-Url: https://ruin.nu/git/?a=blobdiff_plain;f=documentation;h=f46afb702549b5b0a7a530b699a49ea20fb2c5d1;hb=bb79f91257da50013a4175c7c57973a6570eb3a1;hp=cb693df417c88f4430589c5ac0de2ce533360c91;hpb=67721d82f79e56db9c728aed76a3ad9dcca005c2;p=proglang.git

diff --git a/documentation b/documentation
index cb693df..f46afb7 100644
--- a/documentation
+++ b/documentation
@@ -1,77 +1,55 @@
 ####### DOCUMENTATIATOIAITAT ION ########
 
+Usage:
 
+./CompInt [-c] [file]
 
+-c : Compile [file], interprets if it isn't specified
 
-a simple c-like language with support for if/else-statements, while-loops and the standard arithmetic (+, -, /, *) and comparison expressions (<, >, <=, >=, ==, !=). also, increase/decrease expressions (++, --) are supported.
+if no arguments are specified then the file is interpreted
 
-data types:
-integers and booleans.
+Files:
+Interpret.hs: Handles the interpretation of a program
 
-comments:
-// and /* */ comments are allowed.
+Compile.hs: Compiles the program into a c program
 
+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.
 
 
+Additions which comes from the extension:
 
+typing rules
+++++++++++++
 
+[EFunc]
 
+(t is used for types, T is the context, and + is used for in)
 
+T+ i (es) : t <= i(ts):t in T & T+ es:ts 
 
+The functioncall of i returns t if i is in the context with returntype t and the types of the argument expressions matches those in the parameter list
 
+[SReturn]
 
+T+ return e <= e:t & ret(t) in T
 
-examples:
+return typechecks if e returns the same type as the current context
 
-fib
----
-int n1 = 0;
-int n2 = 1;
-int n = readInt;
+[Func]
 
-while(n-- > 0){
-  int temp = n1+n2;
-  n1 = n2;
-  n2 = temp;
-}
-print n2;
+T+ t i (ds) ss <= T,novariables,ret(t),ds => T' & T'+ss & last(ss) => return:t
 
+the function i typechecks if the body typechecks in the context where all other variables has been removed and the return type and paramters has been added and that the last statement is a return with the right type
 
-tests while, decr and assignment.
+semantic rules
+++++++++++++
 
 
+(v is used for values, e for expressions, s for statements, c is the context)
 
-if
---
-if (readBool) {
-  if (readInt < 0)
-    print true;
-  else
-    print false;
-}
 
 
-tests if and if/else.
-
-
-
-sum
----
-int n;
-int sum = 0;
-while ((n = readInt) != -1) sum = sum + n;
-print sum;
-
-
-
-
-var
----
-int a = 3;
-int b = a - 5;
-int c = a + b*7;
-bool d = a == b;
-
-tests simple variable operations.
\ No newline at end of file