mirror of
https://github.com/ashinn/chibi-scheme.git
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80 lines
3.7 KiB
C
80 lines
3.7 KiB
C
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#include <chibi/eval.h>
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static void sexp_define_type_predicate (sexp ctx, sexp env,
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char *cname, sexp_uint_t type) {
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sexp_gc_var2(name, op);
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sexp_gc_preserve2(ctx, name, op);
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name = sexp_c_string(ctx, cname, -1);
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op = sexp_make_type_predicate(ctx, name, sexp_make_fixnum(type));
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sexp_env_define(ctx, env, name=sexp_intern(ctx, cname), op);
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sexp_gc_release2(ctx);
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}
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static void sexp_define_accessors (sexp ctx, sexp env, sexp_uint_t ctype,
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sexp_uint_t cindex, char* get, char *set) {
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sexp type, index;
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sexp_gc_var2(name, op);
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sexp_gc_preserve2(ctx, name, op);
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type = sexp_make_fixnum(ctype);
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index = sexp_make_fixnum(cindex);
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op = sexp_make_getter(ctx, name=sexp_c_string(ctx, get, -1), type, index);
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sexp_env_define(ctx, env, name=sexp_intern(ctx, get), op);
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op = sexp_make_setter(ctx, name=sexp_c_string(ctx, set, -1), type, index);
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sexp_env_define(ctx, env, name=sexp_intern(ctx, set), op);
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sexp_gc_release2(ctx);
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}
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static sexp sexp_get_env_cell (sexp ctx, sexp env, sexp id) {
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sexp cell = sexp_env_cell(env, id);
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while ((! cell) && sexp_synclop(id)) {
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env = sexp_synclo_env(id);
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id = sexp_synclo_expr(id);
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}
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return cell ? cell : SEXP_FALSE;
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}
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static sexp sexp_get_opcode_name (sexp ctx, sexp op) {
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if (! sexp_opcodep(op))
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return sexp_type_exception(ctx, "not an opcode", op);
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else if (! sexp_opcode_name(op))
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return SEXP_FALSE;
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else
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return sexp_intern(ctx, sexp_opcode_name(op));
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}
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sexp sexp_init_library (sexp ctx, sexp env) {
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sexp_gc_var2(name, op);
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sexp_gc_preserve2(ctx, name, op);
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sexp_define_type_predicate(ctx, env, "syntactic-closure?", SEXP_SYNCLO);
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sexp_define_type_predicate(ctx, env, "lambda?", SEXP_LAMBDA);
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sexp_define_type_predicate(ctx, env, "cnd?", SEXP_CND);
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sexp_define_type_predicate(ctx, env, "set?", SEXP_SET);
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sexp_define_type_predicate(ctx, env, "ref?", SEXP_REF);
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sexp_define_type_predicate(ctx, env, "seq?", SEXP_SEQ);
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sexp_define_type_predicate(ctx, env, "lit?", SEXP_LIT);
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sexp_define_type_predicate(ctx, env, "opcode?", SEXP_OPCODE);
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sexp_define_accessors(ctx, env, SEXP_SYNCLO, 0, "syntactic-closure-env", "syntactic-closure-env-set!");
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sexp_define_accessors(ctx, env, SEXP_SYNCLO, 1, "syntactic-closure-vars", "syntactic-closure-vars-set!");
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sexp_define_accessors(ctx, env, SEXP_SYNCLO, 2, "syntactic-closure-expr", "syntactic-closure-expr-set!");
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sexp_define_accessors(ctx, env, SEXP_LAMBDA, 0, "lambda-name", "lambda-name-set!");
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sexp_define_accessors(ctx, env, SEXP_LAMBDA, 1, "lambda-params", "lambda-params-set!");
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sexp_define_accessors(ctx, env, SEXP_LAMBDA, 2, "lambda-body", "lambda-body-set!");
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sexp_define_accessors(ctx, env, SEXP_LAMBDA, 3, "lambda-defs", "lambda-defs-set!");
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sexp_define_accessors(ctx, env, SEXP_CND, 0, "cnd-test", "cnd-test-set!");
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sexp_define_accessors(ctx, env, SEXP_CND, 1, "cnd-pass", "cnd-pass-set!");
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sexp_define_accessors(ctx, env, SEXP_CND, 2, "cnd-fail", "cnd-fail-set!");
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sexp_define_accessors(ctx, env, SEXP_SET, 0, "set-var", "set-var-set!");
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sexp_define_accessors(ctx, env, SEXP_SET, 1, "set-value", "set-value-set!");
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sexp_define_accessors(ctx, env, SEXP_REF, 0, "ref-name", "ref-name-set!");
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sexp_define_accessors(ctx, env, SEXP_REF, 1, "ref-cell", "ref-cell-set!");
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sexp_define_accessors(ctx, env, SEXP_SEQ, 0, "seq-ls", "seq-ls-set!");
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sexp_define_accessors(ctx, env, SEXP_LIT, 0, "lit-value", "lit-value-set!");
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sexp_define_foreign(ctx, env, "analyze", 1, sexp_analyze);
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sexp_define_foreign(ctx, env, "extend-env", 2, sexp_extend_env);
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sexp_define_foreign(ctx, env, "env-cell", 2, sexp_get_env_cell);
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sexp_define_foreign(ctx, env, "opcode-name", 1, sexp_get_opcode_name);
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sexp_gc_release2(ctx);
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return SEXP_VOID;
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}
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