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Scripts start with an env empty of everything but `import' following R7RS semantics.

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We make an exception for this if any -m or -x options have been specified.
This commit is contained in:
Alex Shinn 2011-11-30 09:39:05 +09:00
parent 46008a0cc0
commit 64fdfc1c8c
1 changed files with 22 additions and 8 deletions
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30
main.c
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@ -251,7 +251,7 @@ static void do_init_context (sexp* ctx, sexp* env, sexp_uint_t heap_size,
#define init_context() if (! ctx) do { \ #define init_context() if (! ctx) do { \
do_init_context(&ctx, &env, heap_size, heap_max_size, fold_case); \ do_init_context(&ctx, &env, heap_size, heap_max_size, fold_case); \
sexp_gc_preserve2(ctx, tmp, args); \ sexp_gc_preserve3(ctx, tmp, sym, args); \
} while (0) } while (0)
#define load_init() if (! init_loaded++) do { \ #define load_init() if (! init_loaded++) do { \
@ -262,9 +262,10 @@ static void do_init_context (sexp* ctx, sexp* env, sexp_uint_t heap_size,
void run_main (int argc, char **argv) { void run_main (int argc, char **argv) {
char *arg, *impmod, *p, *prefix=NULL, *suffix=NULL; char *arg, *impmod, *p, *prefix=NULL, *suffix=NULL;
sexp out=SEXP_FALSE, env=NULL, ctx=NULL; sexp out=SEXP_FALSE, env=NULL, ctx=NULL;
sexp_sint_t i, j, c, len, quit=0, print=0, init_loaded=0, fold_case=SEXP_DEFAULT_FOLD_CASE_SYMS; sexp_sint_t i, j, c, len, quit=0, print=0, init_loaded=0, mods_loaded=0,
fold_case=SEXP_DEFAULT_FOLD_CASE_SYMS;
sexp_uint_t heap_size=0, heap_max_size=SEXP_MAXIMUM_HEAP_SIZE; sexp_uint_t heap_size=0, heap_max_size=SEXP_MAXIMUM_HEAP_SIZE;
sexp_gc_var2(tmp, args); sexp_gc_var3(tmp, sym, args);
args = SEXP_NULL; args = SEXP_NULL;
/* parse options */ /* parse options */
@ -296,6 +297,7 @@ void run_main (int argc, char **argv) {
suffix = sexp_environment_suffix; suffix = sexp_environment_suffix;
case 'm': case 'm':
if (c != 'x') {prefix = sexp_import_prefix; suffix = sexp_import_suffix;} if (c != 'x') {prefix = sexp_import_prefix; suffix = sexp_import_suffix;}
mods_loaded = 1;
load_init(); load_init();
arg = ((argv[i][2] == '\0') ? argv[++i] : argv[i]+2); arg = ((argv[i][2] == '\0') ? argv[++i] : argv[i]+2);
check_nonull_arg(c, arg); check_nonull_arg(c, arg);
@ -372,7 +374,7 @@ void run_main (int argc, char **argv) {
if (! sexp_oportp(out)) if (! sexp_oportp(out))
out = sexp_eval_string(ctx, "(current-output-port)", -1, env); out = sexp_eval_string(ctx, "(current-output-port)", -1, env);
sexp_write_string(ctx, sexp_version_string, out); sexp_write_string(ctx, sexp_version_string, out);
tmp = sexp_env_ref(env, sexp_intern(ctx, "*features*", -1), SEXP_NULL); tmp = sexp_env_ref(env, sym=sexp_intern(ctx, "*features*", -1), SEXP_NULL);
sexp_write(ctx, tmp, out); sexp_write(ctx, tmp, out);
sexp_newline(ctx, out); sexp_newline(ctx, out);
return; return;
@ -396,12 +398,24 @@ void run_main (int argc, char **argv) {
args = sexp_cons(ctx, tmp=sexp_c_string(ctx,argv[j],-1), args); args = sexp_cons(ctx, tmp=sexp_c_string(ctx,argv[j],-1), args);
else else
args = sexp_cons(ctx, tmp=sexp_c_string(ctx,argv[0],-1), args); args = sexp_cons(ctx, tmp=sexp_c_string(ctx,argv[0],-1), args);
sexp_set_parameter(ctx, env, sexp_intern(ctx, sexp_argv_symbol, -1), args); sexp_set_parameter(ctx, env, sym=sexp_intern(ctx, sexp_argv_symbol, -1), args);
if (i < argc) { /* script usage */ if (i < argc) { /* script usage */
#if SEXP_USE_MODULES
/* reset the environment to have only the `import' binding */
if (!mods_loaded) {
sexp_context_env(ctx) = env = sexp_make_env(ctx);
sym = sexp_intern(ctx, "repl-import", -1);
tmp = sexp_env_ref(sexp_global(ctx, SEXP_G_META_ENV), sym, SEXP_VOID);
sym = sexp_intern(ctx, "import", -1);
sexp_env_define(ctx, env, sym, tmp);
}
#endif
/* load the script */
sexp_context_tracep(ctx) = 1; sexp_context_tracep(ctx) = 1;
check_exception(ctx, sexp_load(ctx, tmp=sexp_c_string(ctx, argv[i], -1), env)); check_exception(ctx, sexp_load(ctx, tmp=sexp_c_string(ctx, argv[i], -1), env));
tmp = sexp_intern(ctx, "main", -1); /* SRFI-22: run main if specified */
tmp = sexp_env_ref(env, tmp, SEXP_FALSE); sym = sexp_intern(ctx, "main", -1);
tmp = sexp_env_ref(env, sym, SEXP_FALSE);
if (sexp_procedurep(tmp)) { if (sexp_procedurep(tmp)) {
args = sexp_list1(ctx, args); args = sexp_list1(ctx, args);
check_exception(ctx, sexp_apply(ctx, tmp, args)); check_exception(ctx, sexp_apply(ctx, tmp, args));
@ -411,7 +425,7 @@ void run_main (int argc, char **argv) {
} }
} }
sexp_gc_release2(ctx); sexp_gc_release3(ctx);
sexp_destroy_context(ctx); sexp_destroy_context(ctx);
} }