Simon Brooke
6148d3699f
It does not at present build (and it's going to take a good bit more work before it does).
116 lines
3.7 KiB
C
116 lines
3.7 KiB
C
/**
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* ops/apply.c
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*
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* Post Scarcity Software Environment: apply.
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*
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* Add a applying for a key/value pair to a store -- at this stage, just an
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* association list.
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*
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* (c) 2026 Simon Brooke <simon@journeyman.cc>
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* Licensed under GPL version 2.0, or, at your option, any later version.
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*/
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#include "memory/node.h"
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#include "memory/pointer.h"
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#include "memory/pso.h"
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#include "memory/pso3.h"
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#include "memory/pso4.h"
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#include "memory/tags.h"
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#include "ops/assoc.h"
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#include "ops/stack_ops.h"
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#include "ops/string_ops.h"
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#include "ops/truth.h"
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#include "payloads/cons.h"
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#include "payloads/function.h"
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#include "payloads/stack.h"
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/**
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* @brief Apply a function to arguments in an environment.
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*
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* * (apply fn args)
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*/
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struct pso_pointer apply(
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#ifndef MANAGED_POINTER_ONLY
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struct pso4 *frame,
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#endif
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struct pso_pointer frame_pointer,
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struct pso_pointer env ) {
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#ifdef MANAGED_POINTER_ONLY
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struct pso4 *frame = pointer_to_pso4( frame_pointer );
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#endif
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// TODO.
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}
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/**
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* @brief Evaluate a form, in an environment
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*
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* * (eval form)
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*/
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struct pso_pointer eval(
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#ifndef MANAGED_POINTER_ONLY
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struct pso4 *frame,
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#endif
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struct pso_pointer frame_pointer,
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struct pso_pointer env ) {
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#ifdef MANAGED_POINTER_ONLY
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struct pso4 *frame = pointer_to_pso4( frame_pointer );
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#endif
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struct pso_pointer result = fetch_arg( frame, 0 );
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switch ( get_tag_value( result ) ) {
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// case CONSTV:
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// result = eval_cons( frame, frame_pointer, env);
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// break;
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case INTEGERTV:
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case KEYTV:
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case STRINGTV:
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// self evaluating
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break;
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case SYMBOLTV:
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result = c_assoc( result, env );
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break;
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// case LAMBDATV:
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// result = eval_lambda( frame, frame_pointer, env);
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// break;
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// case NLAMBDATV:
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// result = eval_nlambda( frame, frame_pointer, env);
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// break;
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// case SPECIALTV:
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// result = eval_special( frame, frame_pointer, env);
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// break;
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default:
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result =
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make_exception( make_cons
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( frame, c_string_to_lisp_string
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( frame,
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L"Can't yet evaluate things of this type: " ),
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result ), frame_pointer, make_cons( frame,
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make_cons
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( frame,
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c_string_to_lisp_keyword
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( frame,
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L"tag" ),
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get_tag_string
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( result ) ),
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nil ),
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nil );
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}
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if ( exceptionp( result ) ) {
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struct pso3 *x =
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( struct pso3 * ) pointer_to_object_with_tag_value( result,
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EXCEPTIONTV );
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if ( nilp( x->payload.exception.stack ) ) {
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result =
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make_exception( x->payload.exception.message, frame_pointer,
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nil, result );
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}
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}
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return result;
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}
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