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Implement function pointers.

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This commit is contained in:
Stephen Chung
2020-06-25 18:07:57 +08:00
parent aeb47efce8
commit fe640e0e13
18 changed files with 269 additions and 31 deletions
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6
src/packages/string_basic.rs
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@@ -1,5 +1,6 @@
use crate::def_package;
use crate::engine::{FN_TO_STRING, KEYWORD_DEBUG, KEYWORD_PRINT};
use crate::fn_native::FnPtr;
use crate::module::FuncReturn;
use crate::parser::{ImmutableString, INT};
@@ -34,8 +35,9 @@ macro_rules! reg_op {
}
def_package!(crate:BasicStringPackage:"Basic string utilities, including printing.", lib, {
reg_op!(lib, KEYWORD_PRINT, to_string, INT, bool, char);
reg_op!(lib, FN_TO_STRING, to_string, INT, bool, char);
reg_op!(lib, KEYWORD_PRINT, to_string, INT, bool, char, FnPtr);
reg_op!(lib, FN_TO_STRING, to_string, INT, bool, char, FnPtr);
lib.set_fn_1_mut(KEYWORD_DEBUG, |f: &mut FnPtr| Ok(f.to_string()));
lib.set_fn_0(KEYWORD_PRINT, || Ok("".to_string()));
lib.set_fn_1(KEYWORD_PRINT, |_: ()| Ok("".to_string()));