Apple WWDC 1996/WWDC96_1996 (CD).toast/Technology Materials/MacOS 8 Resources/Developer Tools/ResEdit™ 3.0d1/ResEdit™ 3.0d1/ResEdit™ 3.0d1.rsrc/TEXT_2000_EDL help.txt

Text File | 1996-04-23 | 2KB | 80 lines

EDL Help
EDL Grammar
===========

EDLProgram  ::= Statement*
Statement   ::= CommandName [ “(” Parameters “)” ] “;”
              | “Element” “(” Name “,” TypeName “)” Body
              | “List” “(” Name “,” TypeName [“,” ListLen] “)” Body
              | “Switch” “(” Name “)” SwitchBody
Body        ::= Statement
              | “{” Statement* “}”
              | “SELF” “;”
SwitchBody  ::= “{” SwitchEntry* “}”
SwitchEntry ::= SwitchLabel+ “{” Statement* “}”
SwitchLabel ::= “case” Expression “:” ;must be a constant expression
              | “default” “:”
Parameters  ::= Parameter
              | Parameter “,” Parameters
Parameter   ::= Expression | string
Expression  ::= Expression “|” AndExpr
              | AndExpr
AndExpr     ::= AndExpr “&” AddExpr
              | AddExpr
AddExpr     ::= AddExpr (“+” | “-”) MulExpr
              | MulExpr
MulExpr     ::= MulExpr (“*” | “/” | “%”) UnaryExpr
              | UnaryExpr
UnaryExpr   ::= [“+” | “-” | “~”] Term
Term        ::= number | charConstant | identifier
              | “(” Expression “)”
              | “Len” “(” Name “)”
ListLen     ::= Expression
              | “ZeroBasedCount” “(” bitCount “)”
              | “OneBasedCount” “(” bitCount “)”
              | “ZeroTerminator” “(” bitCount “)”
              | “Unbounded”
CommandName ::= string      ;see below for a list of commands
TypeName    ::= string      ;name of an element type
Name        ::= string      ;attribute name in the current element


Command summary
===============

Bool(name, bitCount);
SBits(name,bitCount);
UBits(name,bitCount);
Byte(name);
UByte(name);
Word(name);
UWord(name);
Long(name);
ULong(name);
ResourceRef(name,resType,bitCount);
VarResourceRef(name,typeAttr, bitCount);
PString(name);
CString(name);
PString(name,fieldLen);
CString(name,fieldLen);
String(name,len);
EvenPString(name);
OddPString(name);
EvenCString(name);
OddCString(name);
EvenPXString(name);
OddPXString(name);
Default(value);
Data(name,byteCount);
PadBits(bitCount);
PadByte;
PadWord;
PadLong;
PadBytes(fieldLen);
Align(byteCount);
Label(name);
LabelAttr(name);
OptionalEnd;
CalcBitsS(value,bitCount);
CalcBitsU(value,bitCount);