147 lines
2.8 KiB
C
147 lines
2.8 KiB
C
/*
|
|
* $Id: env.c,v 1.1.1.1 2007/03/28 14:05:24 bacon Exp $
|
|
*
|
|
* {License}
|
|
*/
|
|
|
|
#include <ase/lsp/lsp_i.h>
|
|
|
|
/* TODO: make the frame hash accessible */
|
|
|
|
static ase_lsp_assoc_t* __new_assoc (
|
|
ase_lsp_t* lsp, ase_lsp_obj_t* name,
|
|
ase_lsp_obj_t* value, ase_lsp_obj_t* func)
|
|
{
|
|
ase_lsp_assoc_t* assoc;
|
|
|
|
assoc = (ase_lsp_assoc_t*)
|
|
ASE_LSP_MALLOC (lsp, sizeof(ase_lsp_assoc_t));
|
|
if (assoc == ASE_NULL)
|
|
{
|
|
ase_lsp_seterror (lsp, ASE_LSP_ENOMEM, ASE_NULL, 0);
|
|
return ASE_NULL;
|
|
}
|
|
|
|
assoc->name = name;
|
|
assoc->value = value;
|
|
assoc->func = func;
|
|
assoc->link = ASE_NULL;
|
|
|
|
return assoc;
|
|
}
|
|
|
|
ase_lsp_frame_t* ase_lsp_newframe (ase_lsp_t* lsp)
|
|
{
|
|
ase_lsp_frame_t* frame;
|
|
|
|
frame = (ase_lsp_frame_t*)
|
|
ASE_LSP_MALLOC (lsp, sizeof(ase_lsp_frame_t));
|
|
if (frame == ASE_NULL)
|
|
{
|
|
ase_lsp_seterror (lsp, ASE_LSP_ENOMEM, ASE_NULL, 0);
|
|
return ASE_NULL;
|
|
}
|
|
|
|
frame->assoc = ASE_NULL;
|
|
frame->link = ASE_NULL;
|
|
|
|
return frame;
|
|
}
|
|
|
|
void ase_lsp_freeframe (ase_lsp_t* lsp, ase_lsp_frame_t* frame)
|
|
{
|
|
ase_lsp_assoc_t* assoc, * link;
|
|
|
|
/* destroy the associations */
|
|
assoc = frame->assoc;
|
|
while (assoc != ASE_NULL)
|
|
{
|
|
link = assoc->link;
|
|
ASE_LSP_FREE (lsp, assoc);
|
|
assoc = link;
|
|
}
|
|
|
|
ASE_LSP_FREE (lsp, frame);
|
|
}
|
|
|
|
ase_lsp_assoc_t* ase_lsp_lookupinframe (
|
|
ase_lsp_t* lsp, ase_lsp_frame_t* frame, ase_lsp_obj_t* name)
|
|
{
|
|
ase_lsp_assoc_t* assoc;
|
|
|
|
ASE_ASSERT (ASE_LSP_TYPE(name) == ASE_LSP_OBJ_SYM);
|
|
|
|
assoc = frame->assoc;
|
|
while (assoc != ASE_NULL)
|
|
{
|
|
if (name == assoc->name) return assoc;
|
|
assoc = assoc->link;
|
|
}
|
|
return ASE_NULL;
|
|
}
|
|
|
|
ase_lsp_assoc_t* ase_lsp_insvalueintoframe (
|
|
ase_lsp_t* lsp, ase_lsp_frame_t* frame,
|
|
ase_lsp_obj_t* name, ase_lsp_obj_t* value)
|
|
{
|
|
ase_lsp_assoc_t* assoc;
|
|
|
|
ASE_ASSERT (ASE_LSP_TYPE(name) == ASE_LSP_OBJ_SYM);
|
|
|
|
assoc = __new_assoc (lsp, name, value, ASE_NULL);
|
|
if (assoc == ASE_NULL) return ASE_NULL;
|
|
|
|
assoc->link = frame->assoc;
|
|
frame->assoc = assoc;
|
|
return assoc;
|
|
}
|
|
|
|
ase_lsp_assoc_t* ase_lsp_insfuncintoframe (
|
|
ase_lsp_t* lsp, ase_lsp_frame_t* frame,
|
|
ase_lsp_obj_t* name, ase_lsp_obj_t* func)
|
|
{
|
|
ase_lsp_assoc_t* assoc;
|
|
|
|
ASE_ASSERT (ASE_LSP_TYPE(name) == ASE_LSP_OBJ_SYM);
|
|
|
|
assoc = __new_assoc (lsp, name, ASE_NULL, func);
|
|
if (assoc == ASE_NULL) return ASE_NULL;
|
|
|
|
assoc->link = frame->assoc;
|
|
frame->assoc = assoc;
|
|
return assoc;
|
|
}
|
|
|
|
ase_lsp_tlink_t* ase_lsp_pushtmp (ase_lsp_t* lsp, ase_lsp_obj_t* obj)
|
|
{
|
|
ase_lsp_tlink_t* tlink;
|
|
|
|
tlink = (ase_lsp_tlink_t*)
|
|
ASE_LSP_MALLOC (lsp, sizeof(ase_lsp_tlink_t));
|
|
if (tlink == ASE_NULL)
|
|
{
|
|
ase_lsp_seterror (lsp, ASE_LSP_ENOMEM, ASE_NULL, 0);
|
|
return ASE_NULL;
|
|
}
|
|
|
|
tlink->obj = obj;
|
|
tlink->link = lsp->mem->tlink;
|
|
lsp->mem->tlink = tlink;
|
|
lsp->mem->tlink_count++;
|
|
|
|
return tlink;
|
|
}
|
|
|
|
void ase_lsp_poptmp (ase_lsp_t* lsp)
|
|
{
|
|
ase_lsp_tlink_t* top;
|
|
|
|
ASE_ASSERT (lsp->mem->tlink != ASE_NULL);
|
|
|
|
top = lsp->mem->tlink;
|
|
lsp->mem->tlink = top->link;
|
|
lsp->mem->tlink_count--;
|
|
|
|
ASE_LSP_FREE (lsp, top);
|
|
}
|