1 |
masse |
1.1 |
#include <stdio.h> |
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#include "stack.h" |
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/* Print newline. */ |
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extern void nl(environment *env) |
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{ |
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printf("\n"); |
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} |
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/* Print a newline to a port */ |
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extern void nlport(environment *env) |
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{ |
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if(env->head->type==empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
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} |
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if(CAR(env->head)->type!=port) { |
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printerr("Bad Argument Type"); |
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env->err= 2; |
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return; |
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} |
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if(fprintf(CAR(env->head)->content.p, "\n") < 0){ |
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perror("nl"); |
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env->err= 5; |
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return; |
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} |
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toss(env); |
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} |
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/* Gets the type of a value */ |
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extern void type(environment *env) |
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{ |
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if(env->head->type==empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
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} |
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switch(CAR(env->head)->type){ |
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case empty: |
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push_sym(env, "empty"); |
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break; |
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case integer: |
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push_sym(env, "integer"); |
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break; |
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case tfloat: |
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push_sym(env, "float"); |
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break; |
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case string: |
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push_sym(env, "string"); |
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break; |
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case symb: |
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push_sym(env, "symbol"); |
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break; |
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case func: |
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push_sym(env, "function"); |
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break; |
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case tcons: |
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push_sym(env, "pair"); |
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break; |
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case port: |
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push_sym(env, "port"); |
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break; |
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} |
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swap(env); |
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if (env->err) return; |
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toss(env); |
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} |
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/* Print the top element of the stack but don't discard it */ |
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extern void print_(environment *env) |
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{ |
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if(env->head->type==empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
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} |
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print_val(env, CAR(env->head), 0, NULL, stdout); |
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if(env->err) return; |
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nl(env); |
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} |
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/* Prints the top element of the stack */ |
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extern void print(environment *env) |
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{ |
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print_(env); |
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if(env->err) return; |
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toss(env); |
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} |
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/* Print the top element of the stack without quotes, but don't |
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discard it. */ |
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extern void princ_(environment *env) |
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{ |
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if(env->head->type==empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
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} |
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print_val(env, CAR(env->head), 1, NULL, stdout); |
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} |
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/* Prints the top element of the stack without quotes. */ |
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extern void princ(environment *env) |
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{ |
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princ_(env); |
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if(env->err) return; |
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toss(env); |
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} |
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/* Print a value to a port, but don't discard it */ |
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extern void printport_(environment *env) |
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{ |
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if(env->head->type==empty || CDR(env->head)->type == empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
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} |
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if(CAR(env->head)->type!=port) { |
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printerr("Bad Argument Type"); |
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env->err= 2; |
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return; |
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} |
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print_val(env, CAR(CDR(env->head)), 0, NULL, CAR(env->head)->content.p); |
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if(env->err) return; |
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nlport(env); |
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} |
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134 |
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/* Print a value to a port */ |
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extern void printport(environment *env) |
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{ |
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printport_(env); |
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if(env->err) return; |
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toss(env); |
140 |
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} |
141 |
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142 |
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/* Print, without quotes, to a port, a value, but don't discard it. */ |
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extern void princport_(environment *env) |
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{ |
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if(env->head->type==empty || CDR(env->head)->type == empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
149 |
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} |
150 |
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151 |
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if(CAR(env->head)->type!=port) { |
152 |
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printerr("Bad Argument Type"); |
153 |
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env->err= 2; |
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return; |
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} |
156 |
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157 |
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print_val(env, CAR(CDR(env->head)), 1, NULL, CAR(env->head)->content.p); |
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toss(env); if(env->err) return; |
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} |
160 |
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161 |
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/* Print, without quotes, to a port, the top element. */ |
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extern void princport(environment *env) |
163 |
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{ |
164 |
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princport_(env); |
165 |
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if(env->err) return; |
166 |
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toss(env); |
167 |
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} |
168 |
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169 |
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/* Rotate the first three elements on the stack. */ |
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extern void rot(environment *env) |
171 |
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{ |
172 |
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value *temp= env->head; |
173 |
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174 |
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if(env->head->type == empty || CDR(env->head)->type == empty |
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|| CDR(CDR(env->head))->type == empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
178 |
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return; |
179 |
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} |
180 |
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181 |
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env->head= CDR(CDR(env->head)); |
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CDR(CDR(temp))= CDR(env->head); |
183 |
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CDR(env->head)= temp; |
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} |
185 |
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186 |
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/* Relocate elements of the list on the stack. */ |
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extern void expand(environment *env) |
188 |
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{ |
189 |
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value *temp, *new_head; |
190 |
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191 |
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/* Is top element a list? */ |
192 |
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if(env->head->type==empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
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} |
197 |
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198 |
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if(CAR(env->head)->type!=tcons) { |
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printerr("Bad Argument Type"); |
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env->err= 2; |
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return; |
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} |
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rev(env); |
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206 |
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if(env->err) |
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return; |
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/* The first list element is the new stack head */ |
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new_head= temp= CAR(env->head); |
211 |
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toss(env); |
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214 |
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/* Find the end of the list */ |
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while(CDR(temp)->type != empty) { |
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if (CDR(temp)->type == tcons) |
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temp= CDR(temp); |
218 |
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else { |
219 |
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printerr("Bad Argument Type"); /* Improper list */ |
220 |
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env->err= 2; |
221 |
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return; |
222 |
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} |
223 |
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} |
224 |
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225 |
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/* Connect the tail of the list with the old stack head */ |
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CDR(temp)= env->head; |
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env->head= new_head; /* ...and voila! */ |
228 |
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229 |
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} |
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231 |
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/* Compares two elements by reference. */ |
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extern void eq(environment *env) |
233 |
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{ |
234 |
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void *left, *right; |
235 |
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236 |
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if(env->head->type==empty || CDR(env->head)->type==empty) { |
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printerr("Too Few Arguments"); |
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env->err= 1; |
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return; |
240 |
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} |
241 |
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left= CAR(env->head)->content.ptr; |
243 |
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right= CAR(CDR(env->head))->content.ptr; |
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toss(env); toss(env); |
245 |
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push_int(env, left==right); |
247 |
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} |
248 |
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249 |
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/* Negates the top element on the stack. */ |
250 |
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extern void not(environment *env) |
251 |
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{ |
252 |
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int val; |
253 |
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254 |
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if(env->head->type==empty) { |
255 |
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printerr("Too Few Arguments"); |
256 |
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env->err= 1; |
257 |
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return; |
258 |
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} |
259 |
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260 |
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if(CAR(env->head)->type!=integer) { |
261 |
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printerr("Bad Argument Type"); |
262 |
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env->err= 2; |
263 |
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return; |
264 |
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} |
265 |
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266 |
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val= CAR(env->head)->content.i; |
267 |
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toss(env); |
268 |
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push_int(env, !val); |
269 |
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} |
270 |
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271 |
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/* Compares the two top elements on the stack and return 0 if they're the |
272 |
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same. */ |
273 |
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extern void neq(environment *env) |
274 |
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{ |
275 |
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eq(env); |
276 |
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not(env); |
277 |
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} |
278 |
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279 |
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extern void def(environment *env) |
280 |
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{ |
281 |
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symbol *sym; |
282 |
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283 |
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/* Needs two values on the stack, the top one must be a symbol */ |
284 |
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if(env->head->type==empty || CDR(env->head)->type==empty) { |
285 |
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printerr("Too Few Arguments"); |
286 |
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env->err= 1; |
287 |
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return; |
288 |
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} |
289 |
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290 |
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if(CAR(env->head)->type!=symb) { |
291 |
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printerr("Bad Argument Type"); |
292 |
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env->err= 2; |
293 |
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return; |
294 |
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} |
295 |
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296 |
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/* long names are a pain */ |
297 |
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sym= CAR(env->head)->content.ptr; |
298 |
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299 |
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/* Bind the symbol to the value */ |
300 |
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sym->val= CAR(CDR(env->head)); |
301 |
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302 |
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toss(env); toss(env); |
303 |
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} |
304 |
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305 |
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/* Clear stack */ |
306 |
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extern void clear(environment *env) |
307 |
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{ |
308 |
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while(env->head->type != empty) |
309 |
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toss(env); |
310 |
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} |
311 |
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312 |
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/* Forgets a symbol (remove it from the hash table) */ |
313 |
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extern void forget(environment *env) |
314 |
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{ |
315 |
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char* sym_id; |
316 |
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317 |
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if(env->head->type==empty) { |
318 |
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printerr("Too Few Arguments"); |
319 |
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env->err= 1; |
320 |
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return; |
321 |
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} |
322 |
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323 |
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if(CAR(env->head)->type!=symb) { |
324 |
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printerr("Bad Argument Type"); |
325 |
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env->err= 2; |
326 |
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return; |
327 |
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} |
328 |
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329 |
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sym_id= CAR(env->head)->content.sym->id; |
330 |
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toss(env); |
331 |
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332 |
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return forget_sym(hash(env->symbols, sym_id)); |
333 |
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} |
334 |
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335 |
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/* Returns the current error number to the stack */ |
336 |
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extern void errn(environment *env) |
337 |
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{ |
338 |
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push_int(env, env->err); |
339 |
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} |
340 |
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341 |
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/* "+" */ |
342 |
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extern void sx_2b(environment *env) |
343 |
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{ |
344 |
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int a, b; |
345 |
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float fa, fb; |
346 |
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size_t len; |
347 |
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char* new_string; |
348 |
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value *a_val, *b_val; |
349 |
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350 |
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if(env->head->type==empty || CDR(env->head)->type==empty) { |
351 |
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printerr("Too Few Arguments"); |
352 |
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env->err= 1; |
353 |
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return; |
354 |
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} |
355 |
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356 |
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if(CAR(env->head)->type==string |
357 |
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&& CAR(CDR(env->head))->type==string) { |
358 |
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a_val= CAR(env->head); |
359 |
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b_val= CAR(CDR(env->head)); |
360 |
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protect(a_val); protect(b_val); |
361 |
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toss(env); if(env->err) return; |
362 |
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toss(env); if(env->err) return; |
363 |
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len= strlen(a_val->content.ptr)+strlen(b_val->content.ptr)+1; |
364 |
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new_string= malloc(len); |
365 |
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assert(new_string != NULL); |
366 |
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strcpy(new_string, b_val->content.ptr); |
367 |
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strcat(new_string, a_val->content.ptr); |
368 |
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push_cstring(env, new_string); |
369 |
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unprotect(a_val); unprotect(b_val); |
370 |
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free(new_string); |
371 |
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372 |
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return; |
373 |
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} |
374 |
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|
375 |
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if(CAR(env->head)->type==integer |
376 |
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&& CAR(CDR(env->head))->type==integer) { |
377 |
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a= CAR(env->head)->content.i; |
378 |
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toss(env); if(env->err) return; |
379 |
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b= CAR(env->head)->content.i; |
380 |
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toss(env); if(env->err) return; |
381 |
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push_int(env, b+a); |
382 |
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383 |
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return; |
384 |
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} |
385 |
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|
386 |
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if(CAR(env->head)->type==tfloat |
387 |
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&& CAR(CDR(env->head))->type==tfloat) { |
388 |
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fa= CAR(env->head)->content.f; |
389 |
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toss(env); if(env->err) return; |
390 |
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fb= CAR(env->head)->content.f; |
391 |
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toss(env); if(env->err) return; |
392 |
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push_float(env, fb+fa); |
393 |
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394 |
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return; |
395 |
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} |
396 |
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|
397 |
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if(CAR(env->head)->type==tfloat |
398 |
|
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&& CAR(CDR(env->head))->type==integer) { |
399 |
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fa= CAR(env->head)->content.f; |
400 |
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toss(env); if(env->err) return; |
401 |
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b= CAR(env->head)->content.i; |
402 |
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toss(env); if(env->err) return; |
403 |
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push_float(env, b+fa); |
404 |
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405 |
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return; |
406 |
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} |
407 |
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|
408 |
|
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if(CAR(env->head)->type==integer |
409 |
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&& CAR(CDR(env->head))->type==tfloat) { |
410 |
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a= CAR(env->head)->content.i; |
411 |
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toss(env); if(env->err) return; |
412 |
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fb= CAR(env->head)->content.f; |
413 |
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toss(env); if(env->err) return; |
414 |
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push_float(env, fb+a); |
415 |
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|
416 |
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return; |
417 |
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} |
418 |
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|
419 |
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|
printerr("Bad Argument Type"); |
420 |
|
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env->err=2; |
421 |
|
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} |
422 |
|
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|
423 |
|
|
/* "-" */ |
424 |
|
|
extern void sx_2d(environment *env) |
425 |
|
|
{ |
426 |
|
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int a, b; |
427 |
|
|
float fa, fb; |
428 |
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|
|
429 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
430 |
|
|
printerr("Too Few Arguments"); |
431 |
|
|
env->err=1; |
432 |
|
|
return; |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
if(CAR(env->head)->type==integer |
436 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
437 |
|
|
a= CAR(env->head)->content.i; |
438 |
|
|
toss(env); if(env->err) return; |
439 |
|
|
b= CAR(env->head)->content.i; |
440 |
|
|
toss(env); if(env->err) return; |
441 |
|
|
push_int(env, b-a); |
442 |
|
|
|
443 |
|
|
return; |
444 |
|
|
} |
445 |
|
|
|
446 |
|
|
if(CAR(env->head)->type==tfloat |
447 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
448 |
|
|
fa= CAR(env->head)->content.f; |
449 |
|
|
toss(env); if(env->err) return; |
450 |
|
|
fb= CAR(env->head)->content.f; |
451 |
|
|
toss(env); if(env->err) return; |
452 |
|
|
push_float(env, fb-fa); |
453 |
|
|
|
454 |
|
|
return; |
455 |
|
|
} |
456 |
|
|
|
457 |
|
|
if(CAR(env->head)->type==tfloat |
458 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
459 |
|
|
fa= CAR(env->head)->content.f; |
460 |
|
|
toss(env); if(env->err) return; |
461 |
|
|
b= CAR(env->head)->content.i; |
462 |
|
|
toss(env); if(env->err) return; |
463 |
|
|
push_float(env, b-fa); |
464 |
|
|
|
465 |
|
|
return; |
466 |
|
|
} |
467 |
|
|
|
468 |
|
|
if(CAR(env->head)->type==integer |
469 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
470 |
|
|
a= CAR(env->head)->content.i; |
471 |
|
|
toss(env); if(env->err) return; |
472 |
|
|
fb= CAR(env->head)->content.f; |
473 |
|
|
toss(env); if(env->err) return; |
474 |
|
|
push_float(env, fb-a); |
475 |
|
|
|
476 |
|
|
return; |
477 |
|
|
} |
478 |
|
|
|
479 |
|
|
printerr("Bad Argument Type"); |
480 |
|
|
env->err=2; |
481 |
|
|
} |
482 |
|
|
|
483 |
|
|
/* ">" */ |
484 |
|
|
extern void sx_3e(environment *env) |
485 |
|
|
{ |
486 |
|
|
int a, b; |
487 |
|
|
float fa, fb; |
488 |
|
|
|
489 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
490 |
|
|
printerr("Too Few Arguments"); |
491 |
|
|
env->err= 1; |
492 |
|
|
return; |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
if(CAR(env->head)->type==integer |
496 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
497 |
|
|
a= CAR(env->head)->content.i; |
498 |
|
|
toss(env); if(env->err) return; |
499 |
|
|
b= CAR(env->head)->content.i; |
500 |
|
|
toss(env); if(env->err) return; |
501 |
|
|
push_int(env, b>a); |
502 |
|
|
|
503 |
|
|
return; |
504 |
|
|
} |
505 |
|
|
|
506 |
|
|
if(CAR(env->head)->type==tfloat |
507 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
508 |
|
|
fa= CAR(env->head)->content.f; |
509 |
|
|
toss(env); if(env->err) return; |
510 |
|
|
fb= CAR(env->head)->content.f; |
511 |
|
|
toss(env); if(env->err) return; |
512 |
|
|
push_int(env, fb>fa); |
513 |
|
|
|
514 |
|
|
return; |
515 |
|
|
} |
516 |
|
|
|
517 |
|
|
if(CAR(env->head)->type==tfloat |
518 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
519 |
|
|
fa= CAR(env->head)->content.f; |
520 |
|
|
toss(env); if(env->err) return; |
521 |
|
|
b= CAR(env->head)->content.i; |
522 |
|
|
toss(env); if(env->err) return; |
523 |
|
|
push_int(env, b>fa); |
524 |
|
|
|
525 |
|
|
return; |
526 |
|
|
} |
527 |
|
|
|
528 |
|
|
if(CAR(env->head)->type==integer |
529 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
530 |
|
|
a= CAR(env->head)->content.i; |
531 |
|
|
toss(env); if(env->err) return; |
532 |
|
|
fb= CAR(env->head)->content.f; |
533 |
|
|
toss(env); if(env->err) return; |
534 |
|
|
push_int(env, fb>a); |
535 |
|
|
|
536 |
|
|
return; |
537 |
|
|
} |
538 |
|
|
|
539 |
|
|
printerr("Bad Argument Type"); |
540 |
|
|
env->err= 2; |
541 |
|
|
} |
542 |
|
|
|
543 |
|
|
/* "<" */ |
544 |
|
|
extern void sx_3c(environment *env) |
545 |
|
|
{ |
546 |
|
|
swap(env); if(env->err) return; |
547 |
|
|
sx_3e(env); |
548 |
|
|
} |
549 |
|
|
|
550 |
|
|
/* "<=" */ |
551 |
|
|
extern void sx_3c3d(environment *env) |
552 |
|
|
{ |
553 |
|
|
sx_3e(env); if(env->err) return; |
554 |
|
|
not(env); |
555 |
|
|
} |
556 |
|
|
|
557 |
|
|
/* ">=" */ |
558 |
|
|
extern void sx_3e3d(environment *env) |
559 |
|
|
{ |
560 |
|
|
sx_3c(env); if(env->err) return; |
561 |
|
|
not(env); |
562 |
|
|
} |
563 |
|
|
|
564 |
|
|
/* "dup"; duplicates an item on the stack */ |
565 |
|
|
extern void sx_647570(environment *env) |
566 |
|
|
{ |
567 |
|
|
if(env->head->type==empty) { |
568 |
|
|
printerr("Too Few Arguments"); |
569 |
|
|
env->err= 1; |
570 |
|
|
return; |
571 |
|
|
} |
572 |
|
|
push_val(env, copy_val(env, CAR(env->head))); |
573 |
|
|
} |
574 |
|
|
|
575 |
|
|
/* "if", If-Then */ |
576 |
|
|
extern void sx_6966(environment *env) |
577 |
|
|
{ |
578 |
|
|
int truth; |
579 |
|
|
|
580 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
581 |
|
|
printerr("Too Few Arguments"); |
582 |
|
|
env->err= 1; |
583 |
|
|
return; |
584 |
|
|
} |
585 |
|
|
|
586 |
|
|
if(CAR(CDR(env->head))->type != integer) { |
587 |
|
|
printerr("Bad Argument Type"); |
588 |
|
|
env->err= 2; |
589 |
|
|
return; |
590 |
|
|
} |
591 |
|
|
|
592 |
|
|
swap(env); |
593 |
|
|
if(env->err) return; |
594 |
|
|
|
595 |
|
|
truth= CAR(env->head)->content.i; |
596 |
|
|
|
597 |
|
|
toss(env); |
598 |
|
|
if(env->err) return; |
599 |
|
|
|
600 |
|
|
if(truth) |
601 |
|
|
eval(env); |
602 |
|
|
else |
603 |
|
|
toss(env); |
604 |
|
|
} |
605 |
|
|
|
606 |
|
|
/* If-Then-Else */ |
607 |
|
|
extern void ifelse(environment *env) |
608 |
|
|
{ |
609 |
|
|
int truth; |
610 |
|
|
|
611 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty |
612 |
|
|
|| CDR(CDR(env->head))->type==empty) { |
613 |
|
|
printerr("Too Few Arguments"); |
614 |
|
|
env->err= 1; |
615 |
|
|
return; |
616 |
|
|
} |
617 |
|
|
|
618 |
|
|
if(CAR(CDR(CDR(env->head)))->type!=integer) { |
619 |
|
|
printerr("Bad Argument Type"); |
620 |
|
|
env->err= 2; |
621 |
|
|
return; |
622 |
|
|
} |
623 |
|
|
|
624 |
|
|
rot(env); |
625 |
|
|
if(env->err) return; |
626 |
|
|
|
627 |
|
|
truth= CAR(env->head)->content.i; |
628 |
|
|
|
629 |
|
|
toss(env); |
630 |
|
|
if(env->err) return; |
631 |
|
|
|
632 |
|
|
if(!truth) |
633 |
|
|
swap(env); |
634 |
|
|
if(env->err) return; |
635 |
|
|
|
636 |
|
|
toss(env); |
637 |
|
|
if(env->err) return; |
638 |
|
|
|
639 |
|
|
eval(env); |
640 |
|
|
} |
641 |
|
|
|
642 |
|
|
/* "else" */ |
643 |
|
|
extern void sx_656c7365(environment *env) |
644 |
|
|
{ |
645 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty |
646 |
|
|
|| CDR(CDR(env->head))->type==empty || CDR(CDR(CDR(env->head)))->type==empty |
647 |
|
|
|| CDR(CDR(CDR(CDR(env->head))))->type==empty) { |
648 |
|
|
printerr("Too Few Arguments"); |
649 |
|
|
env->err= 1; |
650 |
|
|
return; |
651 |
|
|
} |
652 |
|
|
|
653 |
|
|
if(CAR(CDR(env->head))->type!=symb |
654 |
|
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "then")!=0 |
655 |
|
|
|| CAR(CDR(CDR(CDR(env->head))))->type!=symb |
656 |
|
|
|| strcmp(CAR(CDR(CDR(CDR(env->head))))->content.sym->id, "if")!=0) { |
657 |
|
|
printerr("Bad Argument Type"); |
658 |
|
|
env->err= 2; |
659 |
|
|
return; |
660 |
|
|
} |
661 |
|
|
|
662 |
|
|
swap(env); toss(env); rot(env); toss(env); |
663 |
|
|
ifelse(env); |
664 |
|
|
} |
665 |
|
|
|
666 |
|
|
extern void then(environment *env) |
667 |
|
|
{ |
668 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty |
669 |
|
|
|| CDR(CDR(env->head))->type==empty) { |
670 |
|
|
printerr("Too Few Arguments"); |
671 |
|
|
env->err= 1; |
672 |
|
|
return; |
673 |
|
|
} |
674 |
|
|
|
675 |
|
|
if(CAR(CDR(env->head))->type!=symb |
676 |
|
|
|| strcmp(CAR(CDR(env->head))->content.sym->id, "if")!=0) { |
677 |
|
|
printerr("Bad Argument Type"); |
678 |
|
|
env->err= 2; |
679 |
|
|
return; |
680 |
|
|
} |
681 |
|
|
|
682 |
|
|
swap(env); toss(env); |
683 |
|
|
sx_6966(env); |
684 |
|
|
} |
685 |
|
|
|
686 |
|
|
/* "while" */ |
687 |
|
|
extern void sx_7768696c65(environment *env) |
688 |
|
|
{ |
689 |
|
|
int truth; |
690 |
|
|
value *loop, *test; |
691 |
|
|
|
692 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
693 |
|
|
printerr("Too Few Arguments"); |
694 |
|
|
env->err= 1; |
695 |
|
|
return; |
696 |
|
|
} |
697 |
|
|
|
698 |
|
|
loop= CAR(env->head); |
699 |
|
|
protect(loop); |
700 |
|
|
toss(env); if(env->err) return; |
701 |
|
|
|
702 |
|
|
test= CAR(env->head); |
703 |
|
|
protect(test); |
704 |
|
|
toss(env); if(env->err) return; |
705 |
|
|
|
706 |
|
|
do { |
707 |
|
|
push_val(env, test); |
708 |
|
|
eval(env); |
709 |
|
|
|
710 |
|
|
if(CAR(env->head)->type != integer) { |
711 |
|
|
printerr("Bad Argument Type"); |
712 |
|
|
env->err= 2; |
713 |
|
|
return; |
714 |
|
|
} |
715 |
|
|
|
716 |
|
|
truth= CAR(env->head)->content.i; |
717 |
|
|
toss(env); if(env->err) return; |
718 |
|
|
|
719 |
|
|
if(truth) { |
720 |
|
|
push_val(env, loop); |
721 |
|
|
eval(env); |
722 |
|
|
} else { |
723 |
|
|
toss(env); |
724 |
|
|
} |
725 |
|
|
|
726 |
|
|
} while(truth); |
727 |
|
|
|
728 |
|
|
unprotect(loop); unprotect(test); |
729 |
|
|
} |
730 |
|
|
|
731 |
|
|
|
732 |
|
|
/* "for"; for-loop */ |
733 |
|
|
extern void sx_666f72(environment *env) |
734 |
|
|
{ |
735 |
|
|
value *loop; |
736 |
|
|
int foo1, foo2; |
737 |
|
|
|
738 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty |
739 |
|
|
|| CDR(CDR(env->head))->type==empty) { |
740 |
|
|
printerr("Too Few Arguments"); |
741 |
|
|
env->err= 1; |
742 |
|
|
return; |
743 |
|
|
} |
744 |
|
|
|
745 |
|
|
if(CAR(CDR(env->head))->type!=integer |
746 |
|
|
|| CAR(CDR(CDR(env->head)))->type!=integer) { |
747 |
|
|
printerr("Bad Argument Type"); |
748 |
|
|
env->err= 2; |
749 |
|
|
return; |
750 |
|
|
} |
751 |
|
|
|
752 |
|
|
loop= CAR(env->head); |
753 |
|
|
protect(loop); |
754 |
|
|
toss(env); if(env->err) return; |
755 |
|
|
|
756 |
|
|
foo2= CAR(env->head)->content.i; |
757 |
|
|
toss(env); if(env->err) return; |
758 |
|
|
|
759 |
|
|
foo1= CAR(env->head)->content.i; |
760 |
|
|
toss(env); if(env->err) return; |
761 |
|
|
|
762 |
|
|
if(foo1<=foo2) { |
763 |
|
|
while(foo1<=foo2) { |
764 |
|
|
push_int(env, foo1); |
765 |
|
|
push_val(env, loop); |
766 |
|
|
eval(env); if(env->err) return; |
767 |
|
|
foo1++; |
768 |
|
|
} |
769 |
|
|
} else { |
770 |
|
|
while(foo1>=foo2) { |
771 |
|
|
push_int(env, foo1); |
772 |
|
|
push_val(env, loop); |
773 |
|
|
eval(env); if(env->err) return; |
774 |
|
|
foo1--; |
775 |
|
|
} |
776 |
|
|
} |
777 |
|
|
unprotect(loop); |
778 |
|
|
} |
779 |
|
|
|
780 |
|
|
/* Variant of for-loop |
781 |
|
|
Requires a list as first argument */ |
782 |
|
|
extern void foreach(environment *env) |
783 |
|
|
{ |
784 |
|
|
value *loop, *foo; |
785 |
|
|
value *iterator; |
786 |
|
|
|
787 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
788 |
|
|
printerr("Too Few Arguments"); |
789 |
|
|
env->err= 1; |
790 |
|
|
return; |
791 |
|
|
} |
792 |
|
|
|
793 |
|
|
if(CAR(CDR(env->head))->type!=tcons) { |
794 |
|
|
printerr("Bad Argument Type"); |
795 |
|
|
env->err= 2; |
796 |
|
|
return; |
797 |
|
|
} |
798 |
|
|
|
799 |
|
|
loop= CAR(env->head); |
800 |
|
|
protect(loop); |
801 |
|
|
toss(env); if(env->err) return; |
802 |
|
|
|
803 |
|
|
foo= CAR(env->head); |
804 |
|
|
protect(foo); |
805 |
|
|
toss(env); if(env->err) return; |
806 |
|
|
|
807 |
|
|
iterator= foo; |
808 |
|
|
|
809 |
|
|
while(iterator->type!=empty) { |
810 |
|
|
push_val(env, CAR(iterator)); |
811 |
|
|
push_val(env, loop); |
812 |
|
|
eval(env); if(env->err) return; |
813 |
|
|
if (iterator->type == tcons){ |
814 |
|
|
iterator= CDR(iterator); |
815 |
|
|
} else { |
816 |
|
|
printerr("Bad Argument Type"); /* Improper list */ |
817 |
|
|
env->err= 2; |
818 |
|
|
break; |
819 |
|
|
} |
820 |
|
|
} |
821 |
|
|
unprotect(loop); unprotect(foo); |
822 |
|
|
} |
823 |
|
|
|
824 |
|
|
/* "to" */ |
825 |
|
|
extern void to(environment *env) |
826 |
|
|
{ |
827 |
|
|
int ending, start, i; |
828 |
|
|
value *iterator, *temp, *end; |
829 |
|
|
|
830 |
|
|
end= new_val(env); |
831 |
|
|
|
832 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
833 |
|
|
printerr("Too Few Arguments"); |
834 |
|
|
env->err= 1; |
835 |
|
|
return; |
836 |
|
|
} |
837 |
|
|
|
838 |
|
|
if(CAR(env->head)->type!=integer |
839 |
|
|
|| CAR(CDR(env->head))->type!=integer) { |
840 |
|
|
printerr("Bad Argument Type"); |
841 |
|
|
env->err= 2; |
842 |
|
|
return; |
843 |
|
|
} |
844 |
|
|
|
845 |
|
|
ending= CAR(env->head)->content.i; |
846 |
|
|
toss(env); if(env->err) return; |
847 |
|
|
start= CAR(env->head)->content.i; |
848 |
|
|
toss(env); if(env->err) return; |
849 |
|
|
|
850 |
|
|
push_sym(env, "["); |
851 |
|
|
|
852 |
|
|
if(ending>=start) { |
853 |
|
|
for(i= ending; i>=start; i--) |
854 |
|
|
push_int(env, i); |
855 |
|
|
} else { |
856 |
|
|
for(i= ending; i<=start; i++) |
857 |
|
|
push_int(env, i); |
858 |
|
|
} |
859 |
|
|
|
860 |
|
|
iterator= env->head; |
861 |
|
|
|
862 |
|
|
if(iterator->type==empty |
863 |
|
|
|| (CAR(iterator)->type==symb |
864 |
|
|
&& CAR(iterator)->content.sym->id[0]=='[')) { |
865 |
|
|
temp= end; |
866 |
|
|
toss(env); |
867 |
|
|
} else { |
868 |
|
|
/* Search for first delimiter */ |
869 |
|
|
while(CDR(iterator)->type!=empty |
870 |
|
|
&& (CAR(CDR(iterator))->type!=symb |
871 |
|
|
|| CAR(CDR(iterator))->content.sym->id[0]!='[')) |
872 |
|
|
iterator= CDR(iterator); |
873 |
|
|
|
874 |
|
|
/* Extract list */ |
875 |
|
|
temp= env->head; |
876 |
|
|
env->head= CDR(iterator); |
877 |
|
|
CDR(iterator)= end; |
878 |
|
|
|
879 |
|
|
if(env->head->type!=empty) |
880 |
|
|
toss(env); |
881 |
|
|
} |
882 |
|
|
|
883 |
|
|
/* Push list */ |
884 |
|
|
push_val(env, temp); |
885 |
|
|
} |
886 |
|
|
|
887 |
|
|
/* Read a string */ |
888 |
|
|
extern void readline(environment *env) |
889 |
|
|
{ |
890 |
|
|
readlinestream(env, env->inputstream); |
891 |
|
|
} |
892 |
|
|
|
893 |
|
|
/* Read a string from a port */ |
894 |
|
|
extern void readlineport(environment *env) |
895 |
|
|
{ |
896 |
|
|
FILE *stream; |
897 |
|
|
|
898 |
|
|
if(env->head->type==empty) { |
899 |
|
|
printerr("Too Few Arguments"); |
900 |
|
|
env->err= 1; |
901 |
|
|
return; |
902 |
|
|
} |
903 |
|
|
|
904 |
|
|
if(CAR(env->head)->type!=port) { |
905 |
|
|
printerr("Bad Argument Type"); |
906 |
|
|
env->err= 2; |
907 |
|
|
return; |
908 |
|
|
} |
909 |
|
|
|
910 |
|
|
stream=CAR(env->head)->content.p; |
911 |
|
|
readlinestream(env, stream); if(env->err) return; |
912 |
|
|
|
913 |
|
|
swap(env); if(env->err) return; |
914 |
|
|
toss(env); |
915 |
|
|
} |
916 |
|
|
|
917 |
|
|
/* "read"; Read a value and place on stack */ |
918 |
|
|
extern void sx_72656164(environment *env) |
919 |
|
|
{ |
920 |
|
|
readstream(env, env->inputstream); |
921 |
|
|
} |
922 |
|
|
|
923 |
|
|
/* "readport"; Read a value from a port and place on stack */ |
924 |
|
|
extern void readport(environment *env) |
925 |
|
|
{ |
926 |
|
|
FILE *stream; |
927 |
|
|
|
928 |
|
|
if(env->head->type==empty) { |
929 |
|
|
printerr("Too Few Arguments"); |
930 |
|
|
env->err= 1; |
931 |
|
|
return; |
932 |
|
|
} |
933 |
|
|
|
934 |
|
|
if(CAR(env->head)->type!=port) { |
935 |
|
|
printerr("Bad Argument Type"); |
936 |
|
|
env->err= 2; |
937 |
|
|
return; |
938 |
|
|
} |
939 |
|
|
|
940 |
|
|
stream=CAR(env->head)->content.p; |
941 |
|
|
readstream(env, stream); if(env->err) return; |
942 |
|
|
|
943 |
|
|
swap(env); if(env->err) return; |
944 |
|
|
toss(env); |
945 |
|
|
} |
946 |
|
|
|
947 |
|
|
#ifdef __linux__ |
948 |
|
|
extern void beep(environment *env) |
949 |
|
|
{ |
950 |
|
|
int freq, dur, period, ticks; |
951 |
|
|
|
952 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
953 |
|
|
printerr("Too Few Arguments"); |
954 |
|
|
env->err= 1; |
955 |
|
|
return; |
956 |
|
|
} |
957 |
|
|
|
958 |
|
|
if(CAR(env->head)->type!=integer |
959 |
|
|
|| CAR(CDR(env->head))->type!=integer) { |
960 |
|
|
printerr("Bad Argument Type"); |
961 |
|
|
env->err= 2; |
962 |
|
|
return; |
963 |
|
|
} |
964 |
|
|
|
965 |
|
|
dur= CAR(env->head)->content.i; |
966 |
|
|
toss(env); |
967 |
|
|
freq= CAR(env->head)->content.i; |
968 |
|
|
toss(env); |
969 |
|
|
|
970 |
|
|
period= 1193180/freq; /* convert freq from Hz to period |
971 |
|
|
length */ |
972 |
|
|
ticks= dur*.001193180; /* convert duration from µseconds to |
973 |
|
|
timer ticks */ |
974 |
|
|
|
975 |
|
|
/* ticks=dur/1000; */ |
976 |
|
|
|
977 |
|
|
/* if (ioctl(STDOUT_FILENO, KDMKTONE, (125<<16) + 0x637)==0) */ |
978 |
|
|
switch (ioctl(STDOUT_FILENO, KDMKTONE, (ticks<<16) | period)){ |
979 |
|
|
case 0: |
980 |
|
|
usleep(dur); |
981 |
|
|
return; |
982 |
|
|
case -1: |
983 |
|
|
perror("beep"); |
984 |
|
|
env->err= 5; |
985 |
|
|
return; |
986 |
|
|
default: |
987 |
|
|
abort(); |
988 |
|
|
} |
989 |
|
|
} |
990 |
|
|
#endif /* __linux__ */ |
991 |
|
|
|
992 |
|
|
/* "wait" */ |
993 |
|
|
extern void sx_77616974(environment *env) |
994 |
|
|
{ |
995 |
|
|
int dur; |
996 |
|
|
|
997 |
|
|
if(env->head->type==empty) { |
998 |
|
|
printerr("Too Few Arguments"); |
999 |
|
|
env->err= 1; |
1000 |
|
|
return; |
1001 |
|
|
} |
1002 |
|
|
|
1003 |
|
|
if(CAR(env->head)->type!=integer) { |
1004 |
|
|
printerr("Bad Argument Type"); |
1005 |
|
|
env->err= 2; |
1006 |
|
|
return; |
1007 |
|
|
} |
1008 |
|
|
|
1009 |
|
|
dur= CAR(env->head)->content.i; |
1010 |
|
|
toss(env); |
1011 |
|
|
|
1012 |
|
|
usleep(dur); |
1013 |
|
|
} |
1014 |
|
|
|
1015 |
|
|
/* "*" */ |
1016 |
|
|
extern void sx_2a(environment *env) |
1017 |
|
|
{ |
1018 |
|
|
int a, b; |
1019 |
|
|
float fa, fb; |
1020 |
|
|
|
1021 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1022 |
|
|
printerr("Too Few Arguments"); |
1023 |
|
|
env->err= 1; |
1024 |
|
|
return; |
1025 |
|
|
} |
1026 |
|
|
|
1027 |
|
|
if(CAR(env->head)->type==integer |
1028 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
1029 |
|
|
a= CAR(env->head)->content.i; |
1030 |
|
|
toss(env); if(env->err) return; |
1031 |
|
|
b= CAR(env->head)->content.i; |
1032 |
|
|
toss(env); if(env->err) return; |
1033 |
|
|
push_int(env, b*a); |
1034 |
|
|
|
1035 |
|
|
return; |
1036 |
|
|
} |
1037 |
|
|
|
1038 |
|
|
if(CAR(env->head)->type==tfloat |
1039 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
1040 |
|
|
fa= CAR(env->head)->content.f; |
1041 |
|
|
toss(env); if(env->err) return; |
1042 |
|
|
fb= CAR(env->head)->content.f; |
1043 |
|
|
toss(env); if(env->err) return; |
1044 |
|
|
push_float(env, fb*fa); |
1045 |
|
|
|
1046 |
|
|
return; |
1047 |
|
|
} |
1048 |
|
|
|
1049 |
|
|
if(CAR(env->head)->type==tfloat |
1050 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
1051 |
|
|
fa= CAR(env->head)->content.f; |
1052 |
|
|
toss(env); if(env->err) return; |
1053 |
|
|
b= CAR(env->head)->content.i; |
1054 |
|
|
toss(env); if(env->err) return; |
1055 |
|
|
push_float(env, b*fa); |
1056 |
|
|
|
1057 |
|
|
return; |
1058 |
|
|
} |
1059 |
|
|
|
1060 |
|
|
if(CAR(env->head)->type==integer |
1061 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
1062 |
|
|
a= CAR(env->head)->content.i; |
1063 |
|
|
toss(env); if(env->err) return; |
1064 |
|
|
fb= CAR(env->head)->content.f; |
1065 |
|
|
toss(env); if(env->err) return; |
1066 |
|
|
push_float(env, fb*a); |
1067 |
|
|
|
1068 |
|
|
return; |
1069 |
|
|
} |
1070 |
|
|
|
1071 |
|
|
printerr("Bad Argument Type"); |
1072 |
|
|
env->err= 2; |
1073 |
|
|
} |
1074 |
|
|
|
1075 |
|
|
/* "/" */ |
1076 |
|
|
extern void sx_2f(environment *env) |
1077 |
|
|
{ |
1078 |
|
|
int a, b; |
1079 |
|
|
float fa, fb; |
1080 |
|
|
|
1081 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1082 |
|
|
printerr("Too Few Arguments"); |
1083 |
|
|
env->err= 1; |
1084 |
|
|
return; |
1085 |
|
|
} |
1086 |
|
|
|
1087 |
|
|
if(CAR(env->head)->type==integer |
1088 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
1089 |
|
|
a= CAR(env->head)->content.i; |
1090 |
|
|
toss(env); if(env->err) return; |
1091 |
|
|
b= CAR(env->head)->content.i; |
1092 |
|
|
toss(env); if(env->err) return; |
1093 |
|
|
push_float(env, b/a); |
1094 |
|
|
|
1095 |
|
|
return; |
1096 |
|
|
} |
1097 |
|
|
|
1098 |
|
|
if(CAR(env->head)->type==tfloat |
1099 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
1100 |
|
|
fa= CAR(env->head)->content.f; |
1101 |
|
|
toss(env); if(env->err) return; |
1102 |
|
|
fb= CAR(env->head)->content.f; |
1103 |
|
|
toss(env); if(env->err) return; |
1104 |
|
|
push_float(env, fb/fa); |
1105 |
|
|
|
1106 |
|
|
return; |
1107 |
|
|
} |
1108 |
|
|
|
1109 |
|
|
if(CAR(env->head)->type==tfloat |
1110 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
1111 |
|
|
fa= CAR(env->head)->content.f; |
1112 |
|
|
toss(env); if(env->err) return; |
1113 |
|
|
b= CAR(env->head)->content.i; |
1114 |
|
|
toss(env); if(env->err) return; |
1115 |
|
|
push_float(env, b/fa); |
1116 |
|
|
|
1117 |
|
|
return; |
1118 |
|
|
} |
1119 |
|
|
|
1120 |
|
|
if(CAR(env->head)->type==integer |
1121 |
|
|
&& CAR(CDR(env->head))->type==tfloat) { |
1122 |
|
|
a= CAR(env->head)->content.i; |
1123 |
|
|
toss(env); if(env->err) return; |
1124 |
|
|
fb= CAR(env->head)->content.f; |
1125 |
|
|
toss(env); if(env->err) return; |
1126 |
|
|
push_float(env, fb/a); |
1127 |
|
|
|
1128 |
|
|
return; |
1129 |
|
|
} |
1130 |
|
|
|
1131 |
|
|
printerr("Bad Argument Type"); |
1132 |
|
|
env->err= 2; |
1133 |
|
|
} |
1134 |
|
|
|
1135 |
|
|
/* "mod" */ |
1136 |
|
|
extern void mod(environment *env) |
1137 |
|
|
{ |
1138 |
|
|
int a, b; |
1139 |
|
|
|
1140 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1141 |
|
|
printerr("Too Few Arguments"); |
1142 |
|
|
env->err= 1; |
1143 |
|
|
return; |
1144 |
|
|
} |
1145 |
|
|
|
1146 |
|
|
if(CAR(env->head)->type==integer |
1147 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
1148 |
|
|
a= CAR(env->head)->content.i; |
1149 |
|
|
toss(env); if(env->err) return; |
1150 |
|
|
b= CAR(env->head)->content.i; |
1151 |
|
|
toss(env); if(env->err) return; |
1152 |
|
|
push_int(env, b%a); |
1153 |
|
|
|
1154 |
|
|
return; |
1155 |
|
|
} |
1156 |
|
|
|
1157 |
|
|
printerr("Bad Argument Type"); |
1158 |
|
|
env->err= 2; |
1159 |
|
|
} |
1160 |
|
|
|
1161 |
|
|
/* "div" */ |
1162 |
|
|
extern void sx_646976(environment *env) |
1163 |
|
|
{ |
1164 |
|
|
int a, b; |
1165 |
|
|
|
1166 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1167 |
|
|
printerr("Too Few Arguments"); |
1168 |
|
|
env->err= 1; |
1169 |
|
|
return; |
1170 |
|
|
} |
1171 |
|
|
|
1172 |
|
|
if(CAR(env->head)->type==integer |
1173 |
|
|
&& CAR(CDR(env->head))->type==integer) { |
1174 |
|
|
a= CAR(env->head)->content.i; |
1175 |
|
|
toss(env); if(env->err) return; |
1176 |
|
|
b= CAR(env->head)->content.i; |
1177 |
|
|
toss(env); if(env->err) return; |
1178 |
|
|
push_int(env, (int)b/a); |
1179 |
|
|
|
1180 |
|
|
return; |
1181 |
|
|
} |
1182 |
|
|
|
1183 |
|
|
printerr("Bad Argument Type"); |
1184 |
|
|
env->err= 2; |
1185 |
|
|
} |
1186 |
|
|
|
1187 |
|
|
extern void setcar(environment *env) |
1188 |
|
|
{ |
1189 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1190 |
|
|
printerr("Too Few Arguments"); |
1191 |
|
|
env->err= 1; |
1192 |
|
|
return; |
1193 |
|
|
} |
1194 |
|
|
|
1195 |
|
|
if(CDR(env->head)->type!=tcons) { |
1196 |
|
|
printerr("Bad Argument Type"); |
1197 |
|
|
env->err= 2; |
1198 |
|
|
return; |
1199 |
|
|
} |
1200 |
|
|
|
1201 |
|
|
CAR(CAR(CDR(env->head)))=CAR(env->head); |
1202 |
|
|
toss(env); |
1203 |
|
|
} |
1204 |
|
|
|
1205 |
|
|
extern void setcdr(environment *env) |
1206 |
|
|
{ |
1207 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1208 |
|
|
printerr("Too Few Arguments"); |
1209 |
|
|
env->err= 1; |
1210 |
|
|
return; |
1211 |
|
|
} |
1212 |
|
|
|
1213 |
|
|
if(CDR(env->head)->type!=tcons) { |
1214 |
|
|
printerr("Bad Argument Type"); |
1215 |
|
|
env->err= 2; |
1216 |
|
|
return; |
1217 |
|
|
} |
1218 |
|
|
|
1219 |
|
|
CDR(CAR(CDR(env->head)))=CAR(env->head); |
1220 |
|
|
toss(env); |
1221 |
|
|
} |
1222 |
|
|
|
1223 |
|
|
extern void car(environment *env) |
1224 |
|
|
{ |
1225 |
|
|
if(env->head->type==empty) { |
1226 |
|
|
printerr("Too Few Arguments"); |
1227 |
|
|
env->err= 1; |
1228 |
|
|
return; |
1229 |
|
|
} |
1230 |
|
|
|
1231 |
|
|
if(CAR(env->head)->type!=tcons) { |
1232 |
|
|
printerr("Bad Argument Type"); |
1233 |
|
|
env->err= 2; |
1234 |
|
|
return; |
1235 |
|
|
} |
1236 |
|
|
|
1237 |
|
|
CAR(env->head)=CAR(CAR(env->head)); |
1238 |
|
|
} |
1239 |
|
|
|
1240 |
|
|
extern void cdr(environment *env) |
1241 |
|
|
{ |
1242 |
|
|
if(env->head->type==empty) { |
1243 |
|
|
printerr("Too Few Arguments"); |
1244 |
|
|
env->err= 1; |
1245 |
|
|
return; |
1246 |
|
|
} |
1247 |
|
|
|
1248 |
|
|
if(CAR(env->head)->type!=tcons) { |
1249 |
|
|
printerr("Bad Argument Type"); |
1250 |
|
|
env->err= 2; |
1251 |
|
|
return; |
1252 |
|
|
} |
1253 |
|
|
|
1254 |
|
|
CAR(env->head)=CDR(CAR(env->head)); |
1255 |
|
|
} |
1256 |
|
|
|
1257 |
|
|
extern void cons(environment *env) |
1258 |
|
|
{ |
1259 |
|
|
value *val; |
1260 |
|
|
|
1261 |
|
|
if(env->head->type==empty || CDR(env->head)->type==empty) { |
1262 |
|
|
printerr("Too Few Arguments"); |
1263 |
|
|
env->err= 1; |
1264 |
|
|
return; |
1265 |
|
|
} |
1266 |
|
|
|
1267 |
|
|
val=new_val(env); |
1268 |
|
|
val->content.c= malloc(sizeof(pair)); |
1269 |
|
|
assert(val->content.c!=NULL); |
1270 |
|
|
|
1271 |
|
|
env->gc_count += sizeof(pair); |
1272 |
|
|
val->type=tcons; |
1273 |
|
|
|
1274 |
|
|
CAR(val)= CAR(CDR(env->head)); |
1275 |
|
|
CDR(val)= CAR(env->head); |
1276 |
|
|
|
1277 |
|
|
push_val(env, val); |
1278 |
|
|
|
1279 |
|
|
swap(env); if(env->err) return; |
1280 |
|
|
toss(env); if(env->err) return; |
1281 |
|
|
swap(env); if(env->err) return; |
1282 |
|
|
toss(env); if(env->err) return; |
1283 |
|
|
} |
1284 |
|
|
|
1285 |
|
|
/* 2: 3 => */ |
1286 |
|
|
/* 1: [ [ 1 . 2 ] [ 3 . 4 ] ] => 1: [ 3 . 4 ] */ |
1287 |
|
|
extern void assq(environment *env) |
1288 |
|
|
{ |
1289 |
|
|
assocgen(env, eq); |
1290 |
|
|
} |
1291 |
|
|
|
1292 |
|
|
|
1293 |
|
|
/* "do" */ |
1294 |
|
|
extern void sx_646f(environment *env) |
1295 |
|
|
{ |
1296 |
|
|
swap(env); if(env->err) return; |
1297 |
|
|
eval(env); |
1298 |
|
|
} |
1299 |
|
|
|
1300 |
|
|
/* "open" */ |
1301 |
|
|
/* 2: "file" */ |
1302 |
|
|
/* 1: "r" => 1: #<port 0x47114711> */ |
1303 |
|
|
extern void sx_6f70656e(environment *env) |
1304 |
|
|
{ |
1305 |
|
|
value *new_port; |
1306 |
|
|
FILE *stream; |
1307 |
|
|
|
1308 |
|
|
if(env->head->type == empty || CDR(env->head)->type == empty) { |
1309 |
|
|
printerr("Too Few Arguments"); |
1310 |
|
|
env->err=1; |
1311 |
|
|
return; |
1312 |
|
|
} |
1313 |
|
|
|
1314 |
|
|
if(CAR(env->head)->type != string |
1315 |
|
|
|| CAR(CDR(env->head))->type != string) { |
1316 |
|
|
printerr("Bad Argument Type"); |
1317 |
|
|
env->err= 2; |
1318 |
|
|
return; |
1319 |
|
|
} |
1320 |
|
|
|
1321 |
|
|
stream=fopen(CAR(CDR(env->head))->content.ptr, |
1322 |
|
|
CAR(env->head)->content.ptr); |
1323 |
|
|
|
1324 |
|
|
if(stream == NULL) { |
1325 |
|
|
perror("open"); |
1326 |
|
|
env->err= 5; |
1327 |
|
|
return; |
1328 |
|
|
} |
1329 |
|
|
|
1330 |
|
|
new_port=new_val(env); |
1331 |
|
|
new_port->type=port; |
1332 |
|
|
new_port->content.p=stream; |
1333 |
|
|
|
1334 |
|
|
push_val(env, new_port); |
1335 |
|
|
|
1336 |
|
|
swap(env); if(env->err) return; |
1337 |
|
|
toss(env); if(env->err) return; |
1338 |
|
|
swap(env); if(env->err) return; |
1339 |
|
|
toss(env); |
1340 |
|
|
} |
1341 |
|
|
|
1342 |
|
|
|
1343 |
|
|
/* "close" */ |
1344 |
|
|
extern void sx_636c6f7365(environment *env) |
1345 |
|
|
{ |
1346 |
|
|
int ret; |
1347 |
|
|
|
1348 |
|
|
if(env->head->type == empty) { |
1349 |
|
|
printerr("Too Few Arguments"); |
1350 |
|
|
env->err=1; |
1351 |
|
|
return; |
1352 |
|
|
} |
1353 |
|
|
|
1354 |
|
|
if(CAR(env->head)->type != port) { |
1355 |
|
|
printerr("Bad Argument Type"); |
1356 |
|
|
env->err= 2; |
1357 |
|
|
return; |
1358 |
|
|
} |
1359 |
|
|
|
1360 |
|
|
ret= fclose(CAR(env->head)->content.p); |
1361 |
|
|
|
1362 |
|
|
if(ret != 0){ |
1363 |
|
|
perror("close"); |
1364 |
|
|
env->err= 5; |
1365 |
|
|
return; |
1366 |
|
|
} |
1367 |
|
|
|
1368 |
|
|
toss(env); |
1369 |
|
|
} |