DIRECTORY ParseDefs USING [Value, Value2], TreesDefs USING [MakeNode]; ParseStmtsImpl: PROGRAM IMPORTS TreesDefs EXPORTS ParseDefs = { ParseStmts: PUBLIC PROCEDURE [rule: CARDINAL, top: CARDINAL, v: LONG DESCRIPTOR FOR ARRAY OF ParseDefs.Value, v2: LONG DESCRIPTOR FOR ARRAY OF ParseDefs.Value2] = { temp: ParseDefs.Value; temp2: ParseDefs.Value2; atemp: LONG POINTER TO LONG STRING _ @temp; avtop: LONG POINTER TO LONG STRING _ @v[top]; SELECT rule FROM -- DECLARATION VARIABLE LISTS (WITH INITIALIZERS) -- 60 => -- InitDclList ::= InitDcltor { v2[top] _ TreesDefs.MakeNode[left: v2[top], right: NIL, string: NIL, nodeType: dclItemList]; v2[top].lastInList _ v2[top]; }; 61 => -- InitDclList ::= InitDclList , InitDcltor { temp2 _ TreesDefs.MakeNode[left: v2[top + 2], right: NIL, string: NIL, nodeType: dclItemList]; v2[top].lastInList.right _ temp2; v2[top].lastInList _ temp2; }; 62 => -- InitDcltor ::= Declarator { v2[top] _ TreesDefs.MakeNode[left: v2[top], right: NIL, string: NIL, nodeType: itemHead]; }; 63 => -- InitDcltor ::= Declarator = e { v2[top] _ TreesDefs.MakeNode[left: v2[top], right: v2[top + 2], string: NIL, nodeType: itemHead]; }; 64 => -- InitDcltor ::= Declarator = { InitList Optcomma } { v2[top] _ TreesDefs.MakeNode[left: v2[top], right: v2[top + 3], string: NIL, nodeType: itemHead]; }; 65 => -- InitList ::= Initializer { v2[top] _ TreesDefs.MakeNode[left: v2[top], right: NIL, string: NIL, nodeType: operation]; v2[top].operationType _ eList; v2[top].lastInList _ v2[top]; }; 66 => -- InitList ::= InitList , Initializer { temp2 _ TreesDefs.MakeNode[left: v2[top + 2], right: NIL, string: NIL, nodeType: operation]; v2[top].operationType _ eList; v2[top].lastInList.right _ temp2; v2[top].lastInList _ temp2; }; 67 => -- Initializer ::= e NULL; 68 => -- Initializer ::= { InitList Optcomma } { v2[top] _ TreesDefs.MakeNode[left: NIL, right: v2[top + 1], string: NIL, nodeType: operation]; v2[top].operationType _ eList; }; -- ENUMERATIONS -- 69 => -- EnumDcl ::= EnumHead { MOEList Optcomma } { v2[top].left _ v2[top + 2]; }; 70 => -- EnumDcl ::= enum NAME { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: v[top + 1], nodeType: attributes]; v2[top].enumeration _ TRUE; }; 71 => -- EnumHead ::= enum { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: NIL, nodeType: attributes]; v2[top].enumeration _ TRUE; }; 72 => -- EnumHead ::= enum NAME { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: v[top + 1], nodeType: attributes]; v2[top].enumeration _ TRUE; }; 73 => -- MOEList ::= MOE { v2[top] _ TreesDefs.MakeNode[left: v2[top], right: NIL, string: NIL, nodeType: eList]; v2[top].lastInList _ v2[top]; }; 74 => -- MOEList ::= MOEList , MOE { temp2 _ TreesDefs.MakeNode[left: v2[top + 2], right: NIL, string: NIL, nodeType: eList]; v2[top].lastInList.right _ temp2; v2[top].lastInList _ temp2; }; 75 => -- MOE ::= NAME { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: v[top], nodeType: operation]; v2[top].operationType _ nameValue; }; 76 => -- MOE ::= NAME = e { v2[top] _ TreesDefs.MakeNode[left: v2[top + 2], right: NIL, string: v[top], nodeType: operation]; v2[top].operationType _ nameValue; }; -- COMPOUND STATEMENTS -- 77 => -- DCmpStmt ::= Begin RDclStatList StmtList } { v2[top] _ TreesDefs.MakeNode[left: v2[top + 1], right: v2[top + 2], string: NIL, nodeType: compoundStmt]; }; 78 => -- CmpStmt ::= Begin StmtList } { v2[top] _ TreesDefs.MakeNode[left: NIL, right: v2[top + 1], string: NIL, nodeType: compoundStmt]; }; 79 => -- Begin ::= { NULL; -- EXPRESSION STATEMENTS -- 80 => -- Stmt ::= e ; { IF v2[top].operationType = postIncrement THEN v2[top].operationType _ preIncrement ELSE IF v2[top].operationType = postDecrement THEN v2[top].operationType _ preDecrement; v2[top] _ TreesDefs.MakeNode[left: v2[top], right: NIL, string: NIL, nodeType: expressionStmt]; }; 81 => -- Stmt ::= CompoundStmt NULL; -- IF / THEN / ELSE STATEMENTS -- 82 => -- Stmt ::= if ( e ) Stmt { temp2 _ TreesDefs.MakeNode[left: v2[top + 4], right: NIL, string: NIL, nodeType: thenElse]; v2[top] _ TreesDefs.MakeNode[left: v2[top + 2], right: temp2, string: NIL, nodeType: ifStmt]; }; 83 => -- Stmt ::= if ( e ) Stmt else Stmt { temp2 _ TreesDefs.MakeNode[left: v2[top + 4], right: v2[top + 6], string: NIL, nodeType: thenElse]; v2[top] _ TreesDefs.MakeNode[left: v2[top + 2], right: temp2, string: NIL, nodeType: ifStmt]; }; -- LOOPING STATEMENTS -- 84 => -- Stmt ::= while ( e ) Stmt { v2[top] _ TreesDefs.MakeNode[left: v2[top + 2], right: v2[top + 4], string: NIL, nodeType: whileStmt]; }; 85 => -- Stmt ::= do Stmt while ( e ) ; { v2[top] _ TreesDefs.MakeNode[left: v2[top + 4], right: v2[top + 1], string: NIL, nodeType: doWhileStmt]; }; 86 => -- ForPrefix ::= for ( EOrEmpty ; EOrEmpty ; { v2[top] _ TreesDefs.MakeNode[left: v2[top + 2], right: v2[top + 4], string: NIL, nodeType: forStmt3]; }; 87 => -- Stmt ::= ForPrefix EOrEmpty ) Stmt { temp2 _ TreesDefs.MakeNode[left: v2[top + 1], right: v2[top], string: NIL, nodeType: forStmt2]; v2[top] _ TreesDefs.MakeNode[left: v2[top + 3], right: temp2, string: NIL, nodeType: forStmt1]; }; -- SWITCH STATEMENT -- 88 => -- Stmt ::= switch ( e ) Stmt { v2[top] _ TreesDefs.MakeNode[left: v2[top + 2], right: v2[top + 4], string: NIL, nodeType: switchStmt]; }; -- OTHER STATEMENTS -- 89 => -- Stmt ::= break ; { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: NIL, nodeType: breakStmt]; }; 90 => -- Stmt ::= continue ; { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: NIL, nodeType: loopStmt]; }; 91 => -- Stmt ::= return ; { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: NIL, nodeType: returnStmt]; }; 92 => -- Stmt ::= return e ; { v2[top] _ TreesDefs.MakeNode[left: v2[top + 1], right: NIL, string: NIL, nodeType: returnStmt]; }; 93 => -- Stmt ::= goto NAME ; { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: v[top + 1], nodeType: gotoStmt]; }; 94 => -- Stmt ::= ; { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: NIL, nodeType: emptyStmt]; }; -- LABELS -- 95 => -- Label ::= NAME : { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: v[top], nodeType: labelLabel]; }; 96 => -- Label ::= case e : { v2[top] _ TreesDefs.MakeNode[left: v2[top + 1], right: NIL, string: NIL, nodeType: caseLabel]; }; 97 => -- Label ::= default : { v2[top] _ TreesDefs.MakeNode[left: NIL, right: NIL, string: NIL, nodeType: defaultLabel]; }; ENDCASE => ERROR; }; }.