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Modula Definition | 1991-03-18 | 1.8 KB | 74 lines |
-
- DEFINITION MODULE MASSYM;
-
- (* MAS Symbol Definition Module. *)
-
-
- (* Import lists and declarations. *)
-
- FROM MASSTOR IMPORT LIST;
-
-
- VAR NOSHOW: LIST;
-
- (* Procedure declarations. *)
-
- PROCEDURE ATOM(X: LIST): BOOLEAN;
- (*Atom. Test if X is an atom. *)
-
-
- PROCEDURE ELEMP(X: LIST): BOOLEAN;
- (*Elementary Pointer. Test if X is an elementary SAC-2 structure. *)
-
-
- PROCEDURE MEMQ(AL,L: LIST): BOOLEAN;
- (*Membership test equal pointers. a is an object, L a list. t=1 if
- the pointer or atom a occurs in L and otherwise t=0.*)
-
-
- PROCEDURE OCCURQ(AL,L: LIST): BOOLEAN;
- (*Occurs test equal pointers. a and L are objects. t=TRUE if
- the pointer or atom a occurs in L and otherwise t=FALSE. *)
-
-
- PROCEDURE UREAD(): LIST;
- (*Universal read. The next atom, symbol, string or list over atoms,
- strings and symbols is read and stored under L. Blanks may occur
- anywhere. Elements of a list may or may not be separated by a comma.*)
-
-
- PROCEDURE UWRITE(L: LIST);
- (*Universal write. L is an atom, symbol or a list over
- atoms and symbols. L is written in the output stream,
- followed by blines. *)
-
-
- PROCEDURE UWRIT1(L: LIST);
- (*Universal write, 1. subalgorithm. L is an atom, a symbol
- or a list over atoms or symbols. L is written in the output
- stream. *)
-
-
- PROCEDURE UNIFY(A,B: LIST; VAR S: LIST): BOOLEAN;
- (*Unification. A and B are objects. If there exists a
- most general unificator of A and B, then S is the list of
- substitutions. In this case TRUE is returned. If no unificator
- exists, then FALSE is returned and S is undefined. *)
-
-
- PROCEDURE GENARRAY(A: LIST): LIST;
- (*Generate array reference symbol. S is a generated symbol. *)
-
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- PROCEDURE GENINDEX(A: LIST): LIST;
- (*Generate index set. I is an index set. *)
-
-
- PROCEDURE ARRAYDEC(A: LIST): LIST;
- (*Generate array name declarations. A is an array reference. *)
-
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- END MASSYM.
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