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more PART parser work

This commit is contained in:
Dick Hollenbeck 2011-01-03 14:01:46 -06:00
parent b942ebdc69
commit 0af1004f5c
6 changed files with 119 additions and 45 deletions
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8
new/sch_dir_lib_source.cpp
View File

@ -459,8 +459,12 @@ void DIR_LIB_SOURCE::GetRevisions( STRINGS* aResults, const STRING& aPartName )
PN_ITER it = partnames.upper_bound( partName +'/' );
PN_ITER end = partnames.lower_bound( partName + char( '/' +1 ) );
while( it != end )
aResults->push_back( *it++ );
for( ; it != end; ++it )
{
const char* rev = endsWithRev( *it );
assert( rev );
aResults->push_back( it->substr( rev - it->c_str() ) );
}
}
}

100
new/sch_lib.cpp
View File

@ -39,13 +39,12 @@
/*
The LIB part cache consist of a std::map of partnames without revisions at the top level.
Each top level map entry can point to another std::map which it owns and holds all the revisions
for that part name. At any point in the tree, there can be NULL pointers which
allow for lazy loading, including the very top most root pointer itself, which
is PARTS* parts. We use the key to hold the partName at one level, and revision
at the deeper nested level, and that key information may not be present within
right hand side of the map tuple.
The LIB part cache consists of a std::map of partnames without revisions at the
top level. Each top level map entry can point to another std::map which it owns
and which holds all the revisions for that part name. At any point in the tree,
there can be NULL pointers which allow for lazy loading, including the very top
most root pointer itself, which is PARTS* parts. We use the key to hold the
partName at one level, and revision at the deeper nested level.
1) Only things which are asked for are done.
2) Anything we learn we remember.
@ -54,10 +53,31 @@ right hand side of the map tuple.
namespace SCH {
class PART_REVS : public std::map< STRING, PART* >
{
// @todo provide an integer sort on revN.. strings here.
/**
* Struct LTREV
* is for PART_REVS, and provides a custom way to compare rev STRINGs.
* Namely, the revN[N..] string if present, is collated according to a
* 'higher revision first'.
*/
struct LTREV
{
bool operator() ( const STRING& s1, const STRING& s2 ) const
{
return RevCmp( s1.c_str(), s2.c_str() ) < 0;
}
};
/**
* Class PART_REVS
* contains the collection of revisions for a particular part name, in the
* form of cached PARTs. The tuple consists of a rev string and a PART pointer.
* The rev string is like "rev1", the PART pointer will be NULL until the PART
* gets loaded, lazily.
*/
class PART_REVS : public std::map< STRING, PART*, LTREV >
{
public:
~PART_REVS()
{
@ -68,6 +88,15 @@ public:
}
};
/**
* Class PARTS
* contains the collection of PART_REVS for all PARTs in the lib.
* The tuple consists of a part name and a PART_REVS pointer.
* The part name does not have the revision attached (of course this is understood
* by definition of "part name"). The PART_REVS pointer will be NULL until a client
* askes about the revisions for a part name, so the loading is done lazily.
*/
class PARTS : public std::map< STRING, PART_REVS* >
{
public:
@ -126,7 +155,7 @@ LIB::~LIB()
}
const PART* LIB::findPart( const LPID& aLPID ) throw( IO_ERROR )
const PART* LIB::lookupPart( const LPID& aLPID ) throw( IO_ERROR )
{
if( !parts )
{
@ -137,7 +166,7 @@ const PART* LIB::findPart( const LPID& aLPID ) throw( IO_ERROR )
// insert a PART_REVS for each part name
for( STRINGS::const_iterator it = vfetch.begin(); it!=vfetch.end(); ++it )
{
// D(printf("findPart:%s\n", it->c_str() );)
D(printf("lookupPart:%s\n", it->c_str() );)
(*parts)[*it] = new PART_REVS;
}
}
@ -152,44 +181,46 @@ const PART* LIB::findPart( const LPID& aLPID ) throw( IO_ERROR )
// if the key for parts has no aLPID.GetPartName() the part is not in this lib
if( revs )
{
if( revs->size() == 0 )
if( revs->size() == 0 ) // assume rev list has not been loaded yet
{
// load all the revisions for this part.
source->GetRevisions( &vfetch, aLPID.GetPartName() );
// creat a PART_REV entry for revision, but leave the PART* NULL
// create a PART_REV entry for each revision, but leave the PART* NULL
for( STRINGS::const_iterator it = vfetch.begin(); it!=vfetch.end(); ++it )
{
// D(printf("findPartRev:%s\n", it->c_str() );)
D(printf("lookupPartRev:%s\n", it->c_str() );)
(*revs)[*it] = 0;
}
}
PART_REVS::iterator result = revs->find( aLPID.GetPartNameAndRev() );
if( result != revs->end() )
{
if( !result->second ) // the PART has never been loaded before
{
result->second = new PART( this, aLPID.GetPartNameAndRev() );
}
return result->second;
}
PART_REVS::iterator rev;
// If caller did not say what revision, find the highest numbered one and return that.
// Otherwise he knew what he wanted specifically, and we do not have it.
if( !aLPID.GetRevision().size() && revs->size() )
{
result = revs->begin(); // sort order has highest rev first
rev = revs->begin(); // sort order has highest rev first
if( !result->second ) // the PART has never been loaded before
if( !rev->second ) // the PART has never been instantiated before
{
result->second = new PART( this, LPID::Format( "", aLPID.GetPartName(), result->first ) );
rev->second = new PART( this, LPID::Format( "", aLPID.GetPartName(), rev->first ) );
}
return result->second;
D(printf("lookupPartLatestRev:%s\n", rev->second->partNameAndRev.c_str() );)
return rev->second;
}
else
{
rev = revs->find( aLPID.GetRevision() );
if( rev != revs->end() )
{
if( !rev->second ) // the PART has never been instantiated before
{
rev->second = new PART( this, aLPID.GetPartNameAndRev() );
}
return rev->second;
}
}
}
@ -199,7 +230,7 @@ const PART* LIB::findPart( const LPID& aLPID ) throw( IO_ERROR )
PART* LIB::LookupPart( const LPID& aLPID, LIB_TABLE* aLibTable ) throw( IO_ERROR )
{
PART* part = (PART*) findPart( aLPID );
PART* part = (PART*) lookupPart( aLPID );
if( !part ) // part does not exist in this lib
{
@ -221,7 +252,8 @@ PART* LIB::LookupPart( const LPID& aLPID, LIB_TABLE* aLibTable ) throw( IO_ERROR
printf( "\n" );
#endif
SWEET_LEXER sw( part->body, wxString::FromUTF8("body") /* @todo have ReadPart give better source */ );
// @todo consider changing ReadPart to return a "source"
SWEET_LEXER sw( part->body, wxString::FromUTF8( aLPID.Format().c_str() ) );
part->Parse( &sw, aLibTable );
}

13
new/sch_lib.h
View File

@ -343,14 +343,17 @@ protected:
PARTS* parts;
/**
* Function findPart
* finds a PART, returns NULL if cannot find.
* Function lookupPart
* looks up a PART, returns NULL if cannot find in source. Does not parse
* the part. Does not even load the part's Sweet string. No ownership
* is given to the PART, it stays in the cache that is this LIB.
*
* @throw IO_ERROR if there is some kind of communications error reading
* the original list of parts.
*
* @return PART* - the cached PART, or NULL if not found. No ownership transferred.
*/
const PART* findPart( const LPID& aLPID ) throw( IO_ERROR );
const PART* lookupPart( const LPID& aLPID ) throw( IO_ERROR );
};

16
new/sch_lpid.cpp
View File

@ -58,6 +58,20 @@ const char* EndsWithRev( const char* start, const char* tail, char separator )
return 0;
}
int RevCmp( const char* s1, const char* s2 )
{
int r = strncmp( s1, s2, 3 );
if( r || strlen(s1)<4 || strlen(s2)<4 )
{
return r;
}
int rnum1 = atoi( s1+3 );
int rnum2 = atoi( s2+3 );
return -(rnum1 - rnum2); // swap the sign, higher revs first
}
//----<Policy and field test functions>-------------------------------------
@ -94,7 +108,7 @@ static int okRevision( const STRING& aField )
{
char rev[32]; // C string for speed
if( aField.size() >= 4 && aField.size() <= sizeof(rev)-3 )
if( aField.size() >= 4 )
{
strcpy( rev, "x/" );
strcat( rev, aField.c_str() );

12
new/sch_lpid.h
View File

@ -228,4 +228,16 @@ static inline const char* EndsWithRev( const STRING& aPartName, char separator =
}
/**
* Function RevCmp
* compares two rev strings in a way like strcmp() except that the highest numbered
* revision is considered first in the sort order. The function probably won't work
* unless you give it two rev strings.
* @param s1 is a rev string like "rev10"
* @param s2 is a rev string like "rev1".
* @return int - either negative, zero, or positive depending on whether the revision
* is greater, equal, or less on the left hand side.
*/
int RevCmp( const char* s1, const char* s2 );
#endif // SCH_LPID_H_

15
new/sch_part.cpp
View File

@ -135,19 +135,28 @@ public:
/// @param me = ja mir, the object getting stuffed, from its perspective
void parsePart( PART* me )
{
PART_T tok = in->NextTok();
PART_T tok;
#if 0
// Be flexible regarding the starting point of the stream.
// Caller may not have read the first two tokens out of the
// stream: T_LEFT and T_part, so ignore them if seen here.
// The 1st two tokens T_LEFT and T_part are then optional in the grammar.
if( tok == T_LEFT )
if( (tok = in->NextTok() ) == T_LEFT )
{
if( ( tok = in->NextTok() ) != T_part )
in->Expecting( T_part );
}
#else
// "( part" are not optional
in->NeedLEFT();
if( ( tok = in->NextTok() ) != T_part )
in->Expecting( T_part );
#endif
in->NeedSYMBOLorNUMBER(); // read in part NAME_HINT, and toss
tok = in->NextTok();
@ -267,7 +276,7 @@ public:
contains |= PB(PARSED);
this->contains |= contains;
me->contains |= contains;
}
};