ORCA-C/Header2.pas
2017-10-21 18:40:19 -05:00

150 lines
3.4 KiB
ObjectPascal

{$optimize 7}
{---------------------------------------------------------------}
{ }
{ Header }
{ }
{ Handles saving and reading precompiled headers. }
{ }
{---------------------------------------------------------------}
unit Header;
{$LibPrefix '0/obj/'}
interface
uses CCommon, MM, Scanner, Symbol, CGI;
{$segment 'scanner'}
var
inhibitHeader: boolean; {should .sym includes be blocked?}
procedure EndInclude (chPtr: ptr);
{ Saves symbols created by the include file }
{ }
{ Parameters: }
{ chPtr - chPtr when the file returned }
{ }
{ Notes: }
{ 1. Call this subroutine right after processing an }
{ include file. }
{ 2. Declared externally in Symbol.pas }
procedure FlagPragmas (pragma: pragmas);
{ record the effects of a pragma }
{ }
{ parameters: }
{ pragma - pragma to record }
{ }
{ Notes: }
{ 1. Defined as extern in Scanner.pas }
{ 2. For the purposes of this unit, the segment statement is }
{ treated as a pragma. }
procedure InitHeader (var fName: gsosOutString);
{ look for a header file, reading it if it exists }
{ }
{ parameters: }
{ fName - source file name (var for efficiency) }
procedure TermHeader;
{ Stop processing the header file }
{ }
{ Note: This is called when the first code-generating }
{ subroutine is found, and again when the compile ends. It }
{ closes any open symbol file, and should take no action if }
{ called twice. }
procedure StartInclude (name: gsosOutStringPtr);
{ Marks the start of an include file }
{ }
{ Notes: }
{ 1. Call this subroutine right after opening an include }
{ file. }
{ 2. Defined externally in Scanner.pas }
{---------------------------------------------------------------}
implementation
procedure EndInclude {chPtr: ptr};
{ Saves symbols created by the include file }
{ }
{ Parameters: }
{ chPtr - chPtr when the file returned }
{ }
{ Notes: }
{ 1. Call this subroutine right after processing an }
{ include file. }
{ 2. Declared externally in Symbol.pas }
begin {EndInclude}
end; {EndInclude}
procedure FlagPragmas {pragma: pragmas};
{ record the effects of a pragma }
{ }
{ parameters: }
{ pragma - pragma to record }
{ }
{ Notes: }
{ 1. Defined as extern in Scanner.pas }
{ 2. For the purposes of this unit, the segment statement is }
{ treated as a pragma. }
begin {FlagPragmas}
end; {FlagPragmas}
procedure InitHeader {var fName: gsosOutString};
{ look for a header file, reading it if it exists }
{ }
{ parameters: }
{ fName - source file name (var for efficiency) }
begin {InitHeader}
end; {InitHeader}
procedure StartInclude {name: gsosOutStringPtr};
{ Marks the start of an include file }
{ }
{ Notes: }
{ 1. Call this subroutine right after opening an include }
{ file. }
{ 2. Defined externally in Scanner.pas }
begin {StartInclude}
end; {StartInclude}
procedure TermHeader;
{ Stop processing the header file }
{ }
{ Note: This is called when the first code-generating }
{ subroutine is found, and again when the compile ends. It }
{ closes any open symbol file, and should take no action if }
{ called twice. }
begin {TermHeader}
end; {TermHeader}
end.