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added lambda? predicate

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hyung-hwan 2018-04-07 15:21:05 +00:00
parent 3d344fc649
commit 746dceff43
2 changed files with 16 additions and 1 deletions
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6
README.md
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@ -2,7 +2,7 @@
## Language Syntax ## Language Syntax
A HCL program is composed of more expressions. A HCL program is composed of expressions.
## Keywords ## Keywords
* nil * nil
@ -64,12 +64,16 @@ A HCL program is composed of more expressions.
## Defining a function ## Defining a function
```
(defun function-name (arguments) (defun function-name (arguments)
| local variables | | local variables |
function body function body
) )
```
```
(set function-name (lambda (arguments) (set function-name (lambda (arguments)
| local variables | | local variables |
function body function body
) )
```

11
lib/prim.c
View File

@ -400,6 +400,16 @@ static hcl_pfrc_t pf_is_dictionary (hcl_t* hcl, hcl_mod_t* mod, hcl_ooi_t nargs)
HCL_STACK_SETRET (hcl, nargs, rv); HCL_STACK_SETRET (hcl, nargs, rv);
return HCL_PF_SUCCESS; return HCL_PF_SUCCESS;
} }
static hcl_pfrc_t pf_is_lambda (hcl_t* hcl, hcl_mod_t* mod, hcl_ooi_t nargs)
{
hcl_oop_t rv, x;
x = HCL_STACK_GETARG(hcl, nargs, 0);
rv = (HCL_IS_CONTEXT(hcl, x))? hcl->_true: hcl->_false;
HCL_STACK_SETRET (hcl, nargs, rv);
return HCL_PF_SUCCESS;
}
/* ------------------------------------------------------------------------- */ /* ------------------------------------------------------------------------- */
static hcl_pfrc_t pf_not (hcl_t* hcl, hcl_mod_t* mod, hcl_ooi_t nargs) static hcl_pfrc_t pf_not (hcl_t* hcl, hcl_mod_t* mod, hcl_ooi_t nargs)
@ -764,6 +774,7 @@ static pf_t builtin_prims[] =
{ 1, 1, pf_is_array, 6, { 'a','r','r','a','y','?' } }, { 1, 1, pf_is_array, 6, { 'a','r','r','a','y','?' } },
{ 1, 1, pf_is_bytearray, 10, { 'b','y','t','e','a','r','r','a','y','?' } }, { 1, 1, pf_is_bytearray, 10, { 'b','y','t','e','a','r','r','a','y','?' } },
{ 1, 1, pf_is_dictionary, 11, { 'd','i','c','t','i','o','n','a','r','y','?' } }, { 1, 1, pf_is_dictionary, 11, { 'd','i','c','t','i','o','n','a','r','y','?' } },
{ 1, 1, pf_is_lambda, 7, { 'l','a','m','b','d','a','?' } },
{ 1, HCL_TYPE_MAX(hcl_oow_t), pf_number_add, 1, { '+' } }, { 1, HCL_TYPE_MAX(hcl_oow_t), pf_number_add, 1, { '+' } },