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adding initial ast module

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Alex Shinn 2009-12-05 19:05:41 +09:00
parent d67e8b46aa
commit 01f21cc905
2 changed files with 65 additions and 0 deletions
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53
lib/chibi/ast.c Normal file
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#include <chibi/eval.h>
static void sexp_define_type_predicate (sexp ctx, sexp env,
char *cname, sexp_uint_t type) {
sexp_gc_var2(name, op);
sexp_gc_preserve2(ctx, name, op);
name = sexp_c_string(ctx, cname, -1);
op = sexp_make_type_predicate(ctx, name, sexp_make_fixnum(type));
sexp_env_define(ctx, env, name=sexp_intern(ctx, cname), op);
sexp_gc_release2(ctx);
}
static void sexp_define_accessors (sexp ctx, sexp env, sexp_uint_t ctype,
sexp_uint_t cindex, char* get, char *set) {
sexp type, index;
sexp_gc_var2(name, op);
sexp_gc_preserve2(ctx, name, op);
type = sexp_make_fixnum(ctype);
index = sexp_make_fixnum(cindex);
op = sexp_make_getter(ctx, name=sexp_c_string(ctx, get, -1), type, index);
sexp_env_define(ctx, env, name=sexp_intern(ctx, get), op);
op = sexp_make_setter(ctx, name=sexp_c_string(ctx, set, -1), type, index);
sexp_env_define(ctx, env, name=sexp_intern(ctx, set), op);
sexp_gc_release2(ctx);
}
sexp sexp_init_library (sexp ctx, sexp env) {
sexp_gc_var2(name, op);
sexp_gc_preserve2(ctx, name, op);
sexp_define_type_predicate(ctx, env, "lambda?", SEXP_LAMBDA);
sexp_define_type_predicate(ctx, env, "cnd?", SEXP_CND);
sexp_define_type_predicate(ctx, env, "set?", SEXP_SET);
sexp_define_type_predicate(ctx, env, "ref?", SEXP_REF);
sexp_define_type_predicate(ctx, env, "seq?", SEXP_SEQ);
sexp_define_type_predicate(ctx, env, "lit?", SEXP_LIT);
sexp_define_accessors(ctx, env, SEXP_LAMBDA, 0, "lambda-name", "lambda-name-set!");
sexp_define_accessors(ctx, env, SEXP_LAMBDA, 1, "lambda-params", "lambda-params-set!");
sexp_define_accessors(ctx, env, SEXP_LAMBDA, 7, "lambda-body", "lambda-body-set!");
sexp_define_accessors(ctx, env, SEXP_CND, 0, "cnd-test", "cnd-test-set!");
sexp_define_accessors(ctx, env, SEXP_CND, 1, "cnd-pass", "cnd-pass-set!");
sexp_define_accessors(ctx, env, SEXP_CND, 2, "cnd-fail", "cnd-fail-set!");
sexp_define_accessors(ctx, env, SEXP_SET, 0, "set-var", "set-var-set!");
sexp_define_accessors(ctx, env, SEXP_SET, 1, "set-value", "set-value-set!");
sexp_define_accessors(ctx, env, SEXP_REF, 0, "ref-name", "ref-name-set!");
sexp_define_accessors(ctx, env, SEXP_REF, 1, "ref-cell", "ref-cell-set!");
sexp_define_accessors(ctx, env, SEXP_SEQ, 0, "seq-ls", "seq-ls-set!");
sexp_define_accessors(ctx, env, SEXP_LIT, 0, "list-value", "lit-value-set!");
sexp_define_foreign(ctx, env, "analyze", 1, sexp_analyze);
sexp_gc_release2(ctx);
return SEXP_VOID;
}

12
lib/chibi/ast.module Normal file
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(define-module (chibi ast)
(export analyze
lambda? cnd? set? ref? seq? lit?
lambda-name lambda-params lambda-body
cnd-test cnd-pass cnd-fail
set-var set-value
ref-name ref-cell
seq-ls
lit-value)
(include-shared "ast"))