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- /* ******************************************************************** */
- /* modops.c Copyright (C) Codemist and University of Bath 1989 */
- /* */
- /* Dynamic module manipulation */
- /* ******************************************************************** */
-
- /*
- * Change Log:
- * Version 1, June 1990
- */
-
- #include "funcalls.h"
- #include "defs.h"
- #include "structs.h"
- #include "error.h"
- #include "global.h"
-
- #include "symboot.h"
- #include "allocate.h"
- #include "modules.h"
- #include "specials.h"
- #include "modboot.h"
- #include "root.h"
-
- /* Dynamic module loading... */
-
- EUFUN_1( Fn_dynamic_load_module, name)
- {
- extern LispObject load_module(LispObject*);
-
- if (!is_symbol(name))
- CallError(stacktop,
- "dynamic-load-module: not a symbolic name",name,NONCONTINUABLE);
-
- EUCALL_1(load_module,name);
-
- return(get_module(stacktop,ARG_0(stackbase)));
- }
- EUFUN_CLOSE
-
- extern LispObject Fn_module_value(LispObject*);
-
- EUFUN_2( Fn_dynamic_accessiblep, mod, sym)
- {
- if (!is_symbol(sym))
- CallError(stacktop,"dynamic-accessiblep: non-symbol",sym,NONCONTINUABLE);
-
- if (!is_i_module(mod) && !is_c_module(mod))
- CallError(stacktop,"dynamic-accessiblep: non-module",mod,NONCONTINUABLE);
-
- return((module_binding_exists_p(stacktop,mod,sym) ? lisptrue : nil));
- }
- EUFUN_CLOSE
-
- EUFUN_2( Fn_dynamic_access, mod, sym)
- {
- if (!is_symbol(sym))
- CallError(stacktop,"dynamic-access: non-symbol",sym,NONCONTINUABLE);
-
- return(EUCALL_2(Fn_module_value,mod,sym));
- }
- EUFUN_CLOSE
-
- EUFUN_1( Fn_get_module, sym)
- {
- LispObject val;
-
- if (!is_symbol(sym))
- CallError(stacktop,"get-module: non-symbol",sym,NONCONTINUABLE);
-
- val = get_module(stacktop,sym);
-
- return(val);
- }
- EUFUN_CLOSE
-
- EUFUN_1( Fn_module_name, mod)
- {
- if (!is_i_module(mod) && !is_c_module(mod))
- CallError(stacktop,"module-name: not a module",mod,NONCONTINUABLE);
-
- return(mod->I_MODULE.name);
- }
- EUFUN_CLOSE
-
- EUFUN_1( Fn_module_exports, mod)
- {
- if (!is_i_module(mod) && !is_c_module(mod))
- CallError(stacktop,"module-exports: not a module",mod,NONCONTINUABLE);
-
- return(mod->I_MODULE.exported_names); /* Should copy... */
- }
- EUFUN_CLOSE
-
- EUFUN_2(Fn_add_module_export, mod, name)
- {
- LispObject xx;
-
- xx=EUCALL_2(Fn_cons,name, mod->I_MODULE.exported_names);
- mod->I_MODULE.exported_names=xx;
- return nil;
- }
- EUFUN_CLOSE
-
- /* Module junk for bytecode interpreter */
-
- EUFUN_2(Fn_make_module, name, nbinds )
- {
- char *myspace;
- LispObject newmod,tab;
- LispObject *binds;
- int i;
-
- myspace=allocate_space(stacktop,intval(nbinds)*sizeof(LispObject)+sizeof(MODULE));
- tab=allocate_table(stacktop,Fn_eq);
-
- newmod=(LispObject) myspace;
- binds=(LispObject *) (myspace+sizeof(MODULE));
-
- for (i=0; i<intval(nbinds); i++)
- {
- binds[i]=nil; /* NULL maybe */
- }
-
- lval_classof(newmod)=Object;
- lval_typeof(newmod)=TYPE_C_MODULE;
- /* hack */
- gcof(newmod)=gcof(nil);
- newmod->MODULE.name=name;
- newmod->MODULE.imported_modules=nil;
- newmod->MODULE.bindings=tab;
- newmod->MODULE.exported_names=nil;
- newmod->C_MODULE.values=binds;
- newmod->C_MODULE.entry_count=intval(nbinds);
- put_module(stacktop,newmod->MODULE.name,newmod);
-
- return newmod;
- }
- EUFUN_CLOSE
-
- static EUFUN_2(Fn_binding_location,mod,name)
- {
- LispObject bind;
-
- bind=GET_BINDING(mod,name);
-
- return (BINDING_VALUE(bind));
- }
- EUFUN_CLOSE
-
- static EUFUN_4(Fn_add_import,mod,name,inmod,inname)
- {
- LispObject bind;
-
- bind=GET_BINDING(inmod,inname);
-
- IMPORT_BINDING(ARG_0(stackbase)/*mod*/,ARG_1(stackbase)/*name*/,bind);
-
- return nil;
- }
- EUFUN_CLOSE
-
- EUFUN_3(Fn_add_binding,mod,name,loc)
- {
-
- ADD_BINDING(ARG_0(stackbase)/*mod*/,name,loc,nil);
-
- return nil;
- }
- EUFUN_CLOSE
-
- static EUFUN_2(Fn_module_val,mod,n)
- {
- return ((mod->C_MODULE.values)[intval(n)]);
- }
- EUFUN_CLOSE
-
- static EUFUN_3(Fn_module_val_setter,mod,n,val)
- {
- (mod->C_MODULE.values)[intval(n)]=val;
-
- return nil;
- }
- EUFUN_CLOSE
-
- /* DJB Type hacks */
- /* would be real nice if this was a function */
- EUFUN_3(Sf_reify_env,mod,env,form)
- {
- LispObject lst=nil;
- Env ptr;
-
- ptr=&(env->ENV);
-
- while (ptr!=NULL)
- {
- LispObject xx;
-
- STACK_TMP(ptr->next);
- STACK_TMP(lst);
- xx=EUCALL_2(Fn_cons,ptr->variable,ptr->value);
- UNSTACK_TMP(lst);
- lst=EUCALL_2(Fn_cons,xx,lst);
- UNSTACK_TMP(ptr);
- }
- lst=EUCALL_2(Fn_cons,ARG_0(stackbase)->MODULE.name,lst);
- return lst;
- }
- EUFUN_CLOSE
-
- EUFUN_2(Fn_make_function, envlst, body)
- { /* CAR(body) should be an arglist */
-
- LispObject env=NULL;
- LispObject mod;
- LispObject ptr=CDR(envlst);
-
- while(ptr!=nil)
- {
- STACK_TMP(CDR(ptr));
- env=allocate_env(stacktop,CAR(CAR(ptr)),CDR(CAR(ptr)), env);
-
- UNSTACK_TMP(ptr);
- }
-
- STACK_TMP(env);
- mod=get_module(stacktop,CAR(ARG_0(stackbase))/*name*/);
- UNSTACK_TMP(env);
-
- return(EUCALL_3(Sf_lambda,mod,env,ARG_1(stackbase)));
- }
- EUFUN_CLOSE
-
- static EUFUN_1(Fn_function_body, fn)
- {
- if (!is_i_function(fn))
- CallError(stacktop,"Fn_body: not an i-function",fn,NONCONTINUABLE);
-
- /*Should add the lambda-list! */
- return fn->I_FUNCTION.body;
- }
- EUFUN_CLOSE
-
- EUFUN_1(Fn_function_env, fn)
- {
- LispObject lst=nil;
- Env ptr;
-
- if (!is_i_function(fn))
- CallError(stacktop,"Fn_body: not an i-function",fn,NONCONTINUABLE);
-
- ptr=fn->I_FUNCTION.env;
-
- while (ptr!=NULL)
- {
- LispObject xx;
-
- STACK_TMP(ptr->next);
- STACK_TMP(lst);
- xx=EUCALL_2(Fn_cons,ptr->variable,ptr->value);
- UNSTACK_TMP(lst);
- lst=EUCALL_2(Fn_cons,xx,lst);
- UNSTACK_TMP(ptr);
- }
- lst=EUCALL_2(Fn_cons,(fn->I_FUNCTION.home)->MODULE.name,lst);
- return lst;
- }
- EUFUN_CLOSE
-
- EUFUN_2(Fn_modify_function_env, fn, envlst)
- {
- LispObject env=NULL;
- LispObject mod;
- LispObject ptr=CDR(envlst);
-
- if (!is_i_function(fn))
- CallError(stacktop,"Fn_body: not an i-function",fn,NONCONTINUABLE);
-
- while(ptr!=nil)
- {
- STACK_TMP(CDR(ptr));
- env=allocate_env(stacktop,CAR(CAR(ptr)),CDR(CAR(ptr)), env);
-
- UNSTACK_TMP(ptr);
- }
-
- STACK_TMP(env);
- mod=get_module(stacktop,CAR(ARG_1(stackbase))/*name*/);
- UNSTACK_TMP(env);
-
- fn->I_FUNCTION.env = env;
- fn->I_FUNCTION.home = mod;
-
- return fn;
- }
- EUFUN_CLOSE
-
- /*
-
- * Initialisation...
-
- */
-
- #define MODULE_OPERATORS_ENTRIES 18
-
- MODULE Module_module_operators;
- LispObject Module_module_operators_values[MODULE_OPERATORS_ENTRIES];
-
- void initialise_module_operators(LispObject *stacktop)
- {
- open_module(stacktop,
- &Module_module_operators,
- Module_module_operators_values,
- "module-operators",
- MODULE_OPERATORS_ENTRIES);
-
- (void) make_module_function(stacktop,
- "dynamic-load-module",Fn_dynamic_load_module,1);
- (void) make_module_function(stacktop,"dynamic-access",Fn_dynamic_access,2);
- (void) make_module_function(stacktop,
- "dynamic-accessible-p",Fn_dynamic_accessiblep,2);
- (void) make_module_function(stacktop,"get-module",Fn_get_module,1);
- (void) make_module_function(stacktop,"module-name",Fn_module_name,1);
- (void) make_module_function(stacktop,"module-exports",Fn_module_exports,1);
-
- (void) make_module_function(stacktop,"add-module-export",Fn_add_module_export,2);
- (void) make_module_function(stacktop,"make-module",Fn_make_module,2);
- (void) make_module_function(stacktop,"module-binding-location",Fn_binding_location,2);
- (void) make_module_function(stacktop,"add-module-import",Fn_add_import,4);
- (void) make_module_function(stacktop,"add-module-binding",Fn_add_binding,3);
- (void) make_module_function(stacktop,"module-value",Fn_module_val,2);
- (void) make_module_function(stacktop,"module-value-setter",Fn_module_val_setter,3);
- (void) make_module_special(stacktop,"reify-env",Sf_reify_env);
- (void) make_module_function(stacktop,"make-function",Fn_make_function,2);
- (void) make_module_function(stacktop,"function-body",Fn_function_body,1);
- (void) make_module_function(stacktop,"function-env",Fn_function_env,1);
- (void) make_module_function(stacktop,"modify-function-env",Fn_modify_function_env,2);
- close_module();
- }
-
-