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dfac2e9eb3
miniruby load *.rb from srcdir. To specify file path, tool/mk_builtin_loader.rb embed full path of each *.rb file. However it prevent to pre-generation of required files for tarball. This patch generate srcdir/*.rb from __FILE__ information.
111 lines
2.9 KiB
C
111 lines
2.9 KiB
C
#include "internal.h"
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#include "vm_core.h"
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#include "iseq.h"
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#include "builtin.h"
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// include from miniinits.c
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static const char *
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read_file(const char *fname, size_t *psize)
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{
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struct stat st;
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char *code;
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FILE *fp;
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if (stat(fname, &st) != 0) {
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rb_bug("stat fails: %s", fname);
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}
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size_t fsize = st.st_size;
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if ((code = malloc(fsize + 1)) == NULL) {
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rb_bug("can't allocate memory: %s (%d)", fname, (int)fsize);
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}
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if ((fp = fopen(fname, "rb")) == NULL) {
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rb_bug("can't open file: %s", fname);
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}
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size_t read_size = fread(code, 1, fsize, fp);
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if (read_size != fsize) {
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rb_bug("can't read file enough: %s (expect %d but was %d)", fname, (int)fsize, (int)read_size);
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}
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code[fsize] = 0;
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*psize = fsize;
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return code;
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}
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static struct st_table *loaded_builtin_table;
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static char srcdir[0x200];
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static const char fname[] = "mini_builtin.c";
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static const char *
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feature_path(const char *name)
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{
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static char path[0x200];
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snprintf(path, 0x200-1, "%s%s.rb", srcdir, name);
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// fprintf(stderr, "srcdir:%s, path:%s, PATH_SEP_CHAR:%c\n", srcdir, path, PATH_SEP_CHAR);
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return path;
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}
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void
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rb_load_with_builtin_functions(const char *feature_name, const struct rb_builtin_function *table)
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{
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size_t fsize;
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const char *code = read_file(feature_path(feature_name), &fsize);
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VALUE code_str = rb_utf8_str_new_static(code, fsize);
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VALUE name_str = rb_sprintf("<internal:%s>", feature_name);
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rb_obj_hide(code_str);
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rb_ast_t *ast = rb_parser_compile_string_path(rb_parser_new(), name_str, code_str, 1);
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GET_VM()->builtin_function_table = table;
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const rb_iseq_t *iseq = rb_iseq_new(&ast->body, name_str, name_str, Qnil, NULL, ISEQ_TYPE_TOP);
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GET_VM()->builtin_function_table = NULL;
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rb_ast_dispose(ast);
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free((void *)code); // code_str becomes broken.
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// register (loaded iseq will not be freed)
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st_insert(loaded_builtin_table, (st_data_t)feature_name, (st_data_t)iseq);
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rb_gc_register_mark_object((VALUE)iseq);
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// eval
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rb_iseq_eval(iseq);
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}
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static int
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each_builtin_i(st_data_t key, st_data_t val, st_data_t dmy)
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{
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const char *feature = (const char *)key;
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const rb_iseq_t *iseq = (const rb_iseq_t *)val;
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rb_yield_values(2, rb_str_new2(feature), rb_iseqw_new(iseq));
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return ST_CONTINUE;
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}
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static VALUE
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each_builtin(VALUE self)
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{
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st_foreach(loaded_builtin_table, each_builtin_i, 0);
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return Qnil;
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}
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void
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Init_builtin(void)
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{
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rb_define_singleton_method(rb_cRubyVM, "each_builtin", each_builtin, 0);
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loaded_builtin_table = st_init_strtable();
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// check srcdir
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// assume __FILE__ encoding is ASCII compatible.
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int pos = strlen(__FILE__) - strlen(fname);
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if (pos < 0) rb_bug("strlen(%s) - strlen(%s) < 0", __FILE__, fname);
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if (strcmp(__FILE__ + pos, fname) != 0) {
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rb_bug("%s does not terminate with %s\n", __FILE__, fname);
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}
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strncpy(srcdir, __FILE__, 0x200-1);
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srcdir[pos] = 0;
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}
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