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#include "aplwc_internal.h"
static int
read_keyword_decl(struct aplwc_module *module, size_t offset)
{
int len;
for(len = 1; (offset + len) < module->tokens->length; len++)
if(module->tokens->tokens[offset+len].tag == TOKEN_TAG_NEWLINE)
break;
return len;
}
static int
read_function_decl(struct aplwc_module *module, size_t offset)
{
int len;
for(len = 1; (offset + len) < module->tokens->length; len++)
if(module->tokens->tokens[offset+len].tag == TOKEN_TAG_DEL)
break;
return len;
}
static int
read_decl(struct aplwc_module *module, size_t offset)
{
switch(module->tokens->tokens[offset].tag){
case TOKEN_TAG_NEWLINE:
return 0;
case TOKEN_TAG_KEYWORD:
return read_keyword_decl(module, offset);
case TOKEN_TAG_DEL:
return read_function_decl(module, offset);
default:
return -1;
}
}
static enum aplwc_rc
read_decls(struct aplwc_module *module)
{
size_t offset;
int skip;
for(offset = 0; offset < module->tokens->length; offset++){
skip = read_decl(module, offset);
if(skip == -1)
return APLWC_INVALID_SYNTAX;
offset += skip;
}
return APLWC_OK;
}
enum aplwc_rc
load_module(struct aplwc *aplwc, struct string *name, struct token_list *tokens)
{
enum aplwc_rc rc;
struct aplwc_module *module;
module = memory_alloc_aplwc_module(aplwc);
if(module == NULL)
return aplwc->last_error;
module->aplwc = aplwc;
module->name = name;
module->tokens = tokens;
module->link = NULL;
rc = read_decls(module);
if(rc == APLWC_OK){
module->link = aplwc->modules;
aplwc->modules = module;
}else{
memory_free_aplwc_module(aplwc, module);
}
return rc;
}
struct aplwc_module *
module_lookup(struct aplwc *aplwc, struct string *name)
{
struct aplwc_module *m;
for(m = aplwc->modules; m; m = m->link){
if(string_compare(m->name, name) == 0)
break;
}
return m;
}
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