155 |
} |
} |
156 |
} |
} |
157 |
|
|
|
/* Generic push function. */ |
|
|
void push(environment *env, stackitem* in_item) |
|
|
{ |
|
|
in_item->next= env->head; |
|
|
env->head= in_item; |
|
|
} |
|
|
|
|
158 |
/* Push a value onto the stack */ |
/* Push a value onto the stack */ |
159 |
void push_val(environment *env, value *val) |
void push_val(environment *env, value *val) |
160 |
{ |
{ |
161 |
stackitem *new_item= malloc(sizeof(stackitem)); |
stackitem *new_item= malloc(sizeof(stackitem)); |
162 |
new_item->item= val; |
new_item->item= val; |
163 |
val->refcount++; |
val->refcount++; |
164 |
push(env, new_item); |
new_item->next= env->head; |
165 |
|
env->head= new_item; |
166 |
} |
} |
167 |
|
|
168 |
/* Push an integer onto the stack. */ |
/* Push an integer onto the stack. */ |
169 |
void push_int(environment *env, int in_val) |
void push_int(environment *env, int in_val) |
170 |
{ |
{ |
171 |
value *new_value= malloc(sizeof(value)); |
value *new_value= malloc(sizeof(value)); |
|
stackitem *new_item= malloc(sizeof(stackitem)); |
|
|
new_item->item= new_value; |
|
172 |
|
|
173 |
new_value->content.val= in_val; |
new_value->content.val= in_val; |
174 |
new_value->type= integer; |
new_value->type= integer; |
175 |
new_value->refcount=1; |
new_value->refcount=1; |
176 |
|
|
177 |
push(env, new_item); |
push_val(env, new_value); |
178 |
} |
} |
179 |
|
|
180 |
/* Copy a string onto the stack. */ |
/* Copy a string onto the stack. */ |
181 |
void push_cstring(environment *env, const char *in_string) |
void push_cstring(environment *env, const char *in_string) |
182 |
{ |
{ |
183 |
value *new_value= malloc(sizeof(value)); |
value *new_value= malloc(sizeof(value)); |
|
stackitem *new_item= malloc(sizeof(stackitem)); |
|
|
new_item->item=new_value; |
|
184 |
|
|
185 |
new_value->content.ptr= malloc(strlen(in_string)+1); |
new_value->content.ptr= malloc(strlen(in_string)+1); |
186 |
strcpy(new_value->content.ptr, in_string); |
strcpy(new_value->content.ptr, in_string); |
187 |
new_value->type= string; |
new_value->type= string; |
188 |
new_value->refcount=1; |
new_value->refcount=1; |
189 |
|
|
190 |
push(env, new_item); |
push_val(env, new_value); |
191 |
} |
} |
192 |
|
|
193 |
/* Mangle a symbol name to a valid C identifier name */ |
/* Mangle a symbol name to a valid C identifier name */ |
242 |
/* Push a symbol onto the stack. */ |
/* Push a symbol onto the stack. */ |
243 |
void push_sym(environment *env, const char *in_string) |
void push_sym(environment *env, const char *in_string) |
244 |
{ |
{ |
|
stackitem *new_item; /* The new stack item */ |
|
|
/* ...which will contain... */ |
|
245 |
value *new_value; /* A new symbol value */ |
value *new_value; /* A new symbol value */ |
246 |
/* ...which might point to... */ |
/* ...which might point to... */ |
247 |
symbol **new_symbol; /* (if needed) A new actual symbol */ |
symbol **new_symbol; /* (if needed) A new actual symbol */ |
254 |
const char *dlerr; /* Dynamic linker error */ |
const char *dlerr; /* Dynamic linker error */ |
255 |
char *mangled; /* Mangled function name */ |
char *mangled; /* Mangled function name */ |
256 |
|
|
|
/* Create a new stack item containing a new value */ |
|
|
new_item= malloc(sizeof(stackitem)); |
|
257 |
new_value= malloc(sizeof(value)); |
new_value= malloc(sizeof(value)); |
|
new_item->item=new_value; |
|
258 |
|
|
259 |
/* The new value is a symbol */ |
/* The new value is a symbol */ |
260 |
new_value->type= symb; |
new_value->type= symb; |
298 |
new_fvalue->refcount= 1; |
new_fvalue->refcount= 1; |
299 |
} |
} |
300 |
} |
} |
301 |
push(env, new_item); |
push_val(env, new_value); |
302 |
} |
} |
303 |
|
|
304 |
/* Print newline. */ |
/* Print newline. */ |
591 |
pack->content.ptr= temp; |
pack->content.ptr= temp; |
592 |
pack->refcount= 1; |
pack->refcount= 1; |
593 |
|
|
594 |
temp= malloc(sizeof(stackitem)); |
push_val(env, pack); |
|
temp->item= pack; |
|
|
|
|
|
push(env, temp); |
|
595 |
rev(env); |
rev(env); |
596 |
} |
} |
597 |
|
|
1126 |
/* 'to' */ |
/* 'to' */ |
1127 |
extern void to(environment *env) { |
extern void to(environment *env) { |
1128 |
int i, start, ending; |
int i, start, ending; |
1129 |
|
stackitem *temp_head; |
1130 |
|
value *temp_val; |
1131 |
|
|
1132 |
if((env->head)==NULL || env->head->next==NULL) { |
if((env->head)==NULL || env->head->next==NULL) { |
1133 |
printerr("Too Few Arguments"); |
printerr("Too Few Arguments"); |
1147 |
start= env->head->item->content.val; |
start= env->head->item->content.val; |
1148 |
toss(env); if(env->err) return; |
toss(env); if(env->err) return; |
1149 |
|
|
1150 |
push_sym(env, "["); |
temp_head= env->head; |
1151 |
|
env->head= NULL; |
1152 |
|
|
1153 |
if(ending>=start) { |
if(ending>=start) { |
1154 |
for(i= start; i<=ending; i++) |
for(i= ending; i>=start; i--) |
1155 |
push_int(env, i); |
push_int(env, i); |
1156 |
} else { |
} else { |
1157 |
for(i= start; i>=ending; i--) |
for(i= ending; i<=start; i++) |
1158 |
push_int(env, i); |
push_int(env, i); |
1159 |
} |
} |
1160 |
|
|
1161 |
pack(env); if(env->err) return; |
temp_val= malloc(sizeof(value)); |
1162 |
|
temp_val->content.ptr= env->head; |
1163 |
|
temp_val->refcount= 1; |
1164 |
|
temp_val->type= list; |
1165 |
|
env->head= temp_head; |
1166 |
|
push_val(env, temp_val); |
1167 |
} |
} |
1168 |
|
|
1169 |
/* Read a string */ |
/* Read a string */ |