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/*
* Copyright 2001-2004 David Abrahams.
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
*/
#include "jam.h"
#include "modules.h"
#include "string.h"
#include "hash.h"
#include "newstr.h"
#include "lists.h"
#include "parse.h"
#include "rules.h"
#include "variable.h"
#include "strings.h"
#include <assert.h>
static struct hash* module_hash = 0;
static char* new_module_str( module_t* m, char* suffix )
{
char* result;
string s;
string_copy( &s, m->name );
string_append( &s, suffix );
result = newstr( s.value );
string_free( &s );
return result;
}
module_t* bindmodule( char* name )
{
PROFILE_ENTER(BINDMODULE);
string s;
module_t m_, *m = &m_;
if( !module_hash )
module_hash = hashinit( sizeof( module_t ), "modules" );
string_new( &s );
if (name)
{
string_append( &s, name );
string_push_back( &s, '.' );
}
m->name = s.value;
if ( hashenter( module_hash, (HASHDATA **)&m ) )
{
m->name = newstr( m->name );
m->variables = 0;
m->rules = 0;
m->imported_modules = 0;
m->class_module = 0;
m->native_rules = 0;
m->user_module = 0;
}
string_free( &s );
PROFILE_EXIT(BINDMODULE);
return m;
}
/*
* demand_rules() - Get the module's "rules" hash on demand
*/
struct hash* demand_rules( module_t* m )
{
if ( !m->rules )
m->rules = hashinit( sizeof( RULE ), new_module_str( m, "rules" ) );
return m->rules;
}
/*
* delete_module() - wipe out the module's rules and variables
*/
static void delete_rule_( void* xrule, void* data )
{
rule_free( (RULE*)xrule );
}
void delete_module( module_t* m )
{
/* clear out all the rules */
if ( m->rules )
{
hashenumerate( m->rules, delete_rule_, (void*)0 );
hashdone( m->rules );
m->rules = 0;
}
if ( m->variables )
{
var_hash_swap( &m->variables );
var_done();
var_hash_swap( &m->variables );
m->variables = 0;
}
}
module_t* root_module()
{
static module_t* root = 0;
if ( !root )
root = bindmodule(0);
return root;
}
void enter_module( module_t* m )
{
var_hash_swap( &m->variables );
}
void exit_module( module_t* m )
{
var_hash_swap( &m->variables );
}
void import_module(LIST* module_names, module_t* target_module)
{
PROFILE_ENTER(IMPORT_MODULE);
struct hash* h;
if (!target_module->imported_modules)
target_module->imported_modules = hashinit( sizeof(char*), "imported");
h = target_module->imported_modules;
for(;module_names; module_names = module_names->next) {
char* s = module_names->string;
char** ss = &s;
hashenter(h, (HASHDATA**)&ss);
}
PROFILE_EXIT(IMPORT_MODULE);
}
static void add_module_name( void* r_, void* result_ )
{
char** r = (char**)r_;
LIST** result = (LIST**)result_;
*result = list_new( *result, copystr( *r ) );
}
LIST* imported_modules(module_t* module)
{
LIST *result = L0;
if ( module->imported_modules )
hashenumerate( module->imported_modules, add_module_name, &result );
return result;
}
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