PARSE.CPP

In the example provider component, an example of the directory service path name parser is in parse.cpp. The path name parser is a key component in ADs provider components. It checks the syntactic validity of an ADs path name passed in to this provider. If the syntax is valid, an OBJECTINFO structure is constructed, which contains a componentized version of the ADs pathname for this object.

Note that all that is being done is a syntax check. Rather than special-case every nuance new to path names, all path checking must conform to the grammar rules laid out by the parser.

Called from GetObjectW in getobj.cpp.

ADsObject

Parses the ADs pathname passed to it. This function follows the following grammar rules:

<ADsObject> -> <ProviderName> <SampleDSObject>

SampleDSObject

Parses the following grammar rules:

<SampleDSObject> -> "\\" <identifier> "\" <SampleDSObject>

ProviderName

Adds in the syntactically correct provider name if not there.

DsPathName

Parses the following grammar rules:

<Pathname> -> <Component> "\\" <Pathname> OR

<Pathname> -> <Component>

Component

Parses the following grammar rules:

<Identifier> OR

<Identifier> "=" <Identifier>

CLexer::CLexer

Standard constructor.

CLexer::~CLexer

Standard destructor.

CLexer::GetNextToken

Tokenizer.

CLexer::NextChar

Retrieves next single character.

CLexer::PushBackToken

Backs up to beginning of last token.

CLexer::PushbackChar

Backs up one character.

CLexer::IsKeyword

Checks keyword list (defined in globals.h).

CLexer::AddComponent

Adds this component to the component array.

AddProviderName

Adds a syntactically correct provider name into the string to be parsed.

AddRootRDN

Adds the syntactically correct root relative distinguished name (RDN) ]name into the string to be parsed