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71fee9bc72
opt_invokebuiltin_delegate and opt_invokebuiltin_delegate_leave invokes builtin functions with same parameters of the method. This technique eliminate stack push operations. However, delegation parameters should be completely same as given parameters. (e.g. `def foo(a, b, c) __builtin_foo(a, b, c)` is okay, but __builtin_foo(b, c) is not allowed) This patch relaxes this restriction. ISeq has a local variables table which includes parameters. For example, the method defined as `def foo(a, b, c) x=y=nil`, then local variables table contains [a, b, c, x, y]. If calling builtin-function with arguments which are sub-array of the lvar table, use opt_invokebuiltin_delegate instruction with start index. For example, `__builtin_foo(b, c)`, `__builtin_bar(c, x, y)` is okay, and so on.
60 lines
1.5 KiB
C
60 lines
1.5 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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// included from miniinit.c
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static struct st_table *loaded_builtin_table;
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rb_ast_t *rb_builtin_ast(const char *feature_name, VALUE *name_str);
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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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VALUE name_str = 0;
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rb_ast_t *ast = rb_builtin_ast(feature_name, &name_str);
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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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// for debug
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if (0 && strcmp("prelude", feature_name) == 0) {
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rb_io_write(rb_stdout, rb_iseq_disasm((const rb_iseq_t *)iseq));
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}
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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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}
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