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Define a new function mrb_funcall_id().

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`mrb_funcall_id()` takes `mrb_sym` instead of `char*` for a method name.
You can use `MRB_SYM()`/`MRB_QSYM()` to specify the method to call.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2020-05-27 23:22:28 +09:00
parent 80c15ddd15
commit dcd3e5907c
2 changed files with 55 additions and 5 deletions
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include/mruby.h
+36 -5
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@@ -1030,6 +1030,36 @@ MRB_API mrb_value mrb_get_arg1(mrb_state *mrb);
* @return [mrb_value] mruby function value.
*/
MRB_API mrb_value mrb_funcall(mrb_state *mrb, mrb_value val, const char *name, mrb_int argc, ...);
/**
* Call existing ruby functions.
*
* Example:
*
* #include <stdio.h>
* #include <mruby.h>
* #include "mruby/compile.h"
*
* int
* main()
* {
* mrb_state *mrb = mrb_open();
*
* if (!mrb) { }
* FILE *fp = fopen("test.rb","r");
* mrb_value obj = mrb_load_file(mrb,fp);
* mrb_funcall_id(mrb, obj, MRB_SYM(method_name), 1, mrb_fixnum_value(i));
* fclose(fp);
* mrb_close(mrb);
* }
*
* @param mrb The current mruby state.
* @param val A reference to an mruby value.
* @param name The symbol representing the method.
* @param argc The number of arguments the method has.
* @param ... Variadic values(not type safe!).
* @return [mrb_value] mruby function value.
*/
MRB_API mrb_value mrb_funcall_id(mrb_state *mrb, mrb_value val, mrb_sym mid, mrb_int argc, ...);
/**
* Call existing ruby functions. This is basically the type safe version of mrb_funcall.
*
@@ -1039,15 +1069,14 @@ MRB_API mrb_value mrb_funcall(mrb_state *mrb, mrb_value val, const char *name, m
* int
* main()
* {
* mrb_int i = 99;
* mrb_state *mrb = mrb_open();
* mrb_value obj = mrb_fixnum_value(1);
*
* if (!mrb) { }
* mrb_sym m_sym = mrb_intern_lit(mrb, "method_name"); // Symbol for method.
*
* FILE *fp = fopen("test.rb","r");
* mrb_value obj = mrb_load_file(mrb,fp);
* mrb_funcall_argv(mrb, obj, m_sym, 1, &obj); // Calling ruby function from test.rb.
* mrb_funcall_argv(mrb, obj, MRB_SYM(method_name), 1, &obj); // Calling ruby function from test.rb.
* fclose(fp);
* mrb_close(mrb);
* }
@@ -1065,7 +1094,7 @@ MRB_API mrb_value mrb_funcall_argv(mrb_state *mrb, mrb_value val, mrb_sym name,
*/
MRB_API mrb_value mrb_funcall_with_block(mrb_state *mrb, mrb_value val, mrb_sym name, mrb_int argc, const mrb_value *argv, mrb_value block);
/**
* Create a symbol
* Create a symbol from C string. But usually it's better to use MRB_SYM(sym) and MRB_QSYM(qsym).
*
* Example:
*
@@ -1073,7 +1102,9 @@ MRB_API mrb_value mrb_funcall_with_block(mrb_state *mrb, mrb_value val, mrb_sym
* :pizza # => :pizza
*
* // C style:
* mrb_sym m_sym = mrb_intern_lit(mrb, "pizza"); // => :pizza
* mrb_sym sym1 = mrb_intern_lit(mrb, "pizza"); // => :pizza
* mrb_sym sym2 = MRB_SYM(pizza); // => :pizza
* mrb_sym sym3 = MRB_SYM(pizza_p); // => :pizza?
*
* @param mrb The current mruby state.
* @param str The string to be symbolized