format
This commit is contained in:
parent
e269917240
commit
59b92a6479
279
src/mumble.c
279
src/mumble.c
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@ -10,15 +10,16 @@
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return lispval_err(err); \
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}
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int VERBOSE = 2;
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#define printfln(...) do { \
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if(VERBOSE == 2) { \
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printf ("\n@ %s (%d): ", __FILE__, __LINE__); \
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printf (__VA_ARGS__); \
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} else {\
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#define printfln(...) \
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do { \
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if (VERBOSE == 2) { \
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printf("\n@ %s (%d): ", __FILE__, __LINE__); \
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printf(__VA_ARGS__); \
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} else { \
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printf("\n"); \
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printf (__VA_ARGS__); \
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printf(__VA_ARGS__); \
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} \
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} while (0)
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} while (0)
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// Types
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// Types: Forward declarations
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@ -31,7 +32,7 @@ struct lispenv;
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typedef struct lispval lispval;
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typedef struct lispenv lispenv;
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typedef lispval*(*lispbuiltin)(lispval*, lispenv*);
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typedef lispval* (*lispbuiltin)(lispval*, lispenv*);
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// this defines the lispbuiltin type
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// which seems to be a pointer to a function which takes in a lispenv*
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// and a lispval* and returns a lispval*
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@ -58,7 +59,6 @@ typedef struct lispval {
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struct lispval** cell; // list of lisval*
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} lispval;
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enum {
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LISPERR_DIV_ZERO,
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LISPERR_BAD_OP,
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@ -68,7 +68,8 @@ enum {
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// Constructors
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lispval* lispval_num(double x)
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{
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if(VERBOSE) printfln("Allocated num");
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if (VERBOSE)
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printfln("Allocated num");
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lispval* v = malloc(sizeof(lispval));
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v->type = LISPVAL_NUM;
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v->count = 0;
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@ -78,7 +79,8 @@ lispval* lispval_num(double x)
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lispval* lispval_err(char* message)
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{
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if(VERBOSE) printfln("Allocated err");
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if (VERBOSE)
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printfln("Allocated err");
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lispval* v = malloc(sizeof(lispval));
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v->type = LISPVAL_ERR;
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v->count = 0;
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@ -89,7 +91,8 @@ lispval* lispval_err(char* message)
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lispval* lispval_sym(char* symbol)
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{
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if(VERBOSE) printfln("Allocated sym");
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if (VERBOSE)
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printfln("Allocated sym");
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lispval* v = malloc(sizeof(lispval));
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v->type = LISPVAL_SYM;
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v->count = 0;
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@ -98,21 +101,25 @@ lispval* lispval_sym(char* symbol)
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return v;
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}
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lispval* lispval_func(lispbuiltin func, char* funcname){
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if(VERBOSE) printfln("Allocating func name:%s, pointer: %p", funcname, func);
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lispval* lispval_func(lispbuiltin func, char* funcname)
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{
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if (VERBOSE)
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printfln("Allocating func name:%s, pointer: %p", funcname, func);
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lispval* v = malloc(sizeof(lispval));
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v->type = LISPVAL_FUNC;
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v->count = 0;
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v->funcname = malloc(strlen(funcname) + 1);
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strcpy(v->funcname, funcname);
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v->func = func;
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if(VERBOSE) printfln("Allocated func");
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if (VERBOSE)
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printfln("Allocated func");
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return v;
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}
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lispval* lispval_sexpr(void)
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{
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if(VERBOSE) printfln("Allocated sexpr");
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if (VERBOSE)
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printfln("Allocated sexpr");
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lispval* v = malloc(sizeof(lispval));
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v->type = LISPVAL_SEXPR;
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v->count = 0;
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@ -122,7 +129,8 @@ lispval* lispval_sexpr(void)
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lispval* lispval_qexpr(void)
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{
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if(VERBOSE) printfln("Allocated qexpr");
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if (VERBOSE)
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printfln("Allocated qexpr");
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lispval* v = malloc(sizeof(lispval));
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v->type = LISPVAL_QEXPR;
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v->count = 0;
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@ -134,46 +142,62 @@ lispval* lispval_qexpr(void)
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void print_lispval_tree(lispval* v, int indent_level);
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void delete_lispval(lispval* v)
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{
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if(v == NULL) return;
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if (v == NULL)
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return;
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// print_lispval_tree(v, 0);
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if(VERBOSE) printfln("\nDeleting object of type %i",v->type);
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if (VERBOSE)
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printfln("\nDeleting object of type %i", v->type);
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switch (v->type) {
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case LISPVAL_NUM:
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if(VERBOSE) printfln("Freeing num");
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if (v != NULL) free(v);
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if(VERBOSE) printfln("Freed num");
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if (VERBOSE)
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printfln("Freeing num");
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if (v != NULL)
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free(v);
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if (VERBOSE)
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printfln("Freed num");
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break;
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case LISPVAL_ERR:
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if(VERBOSE) printfln("Freeing err");
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if (VERBOSE)
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printfln("Freeing err");
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if (v->err != NULL)
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free(v->err);
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v->err = NULL;
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if (v != NULL) free(v);
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if(VERBOSE) printfln("Freed err");
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if (v != NULL)
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free(v);
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if (VERBOSE)
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printfln("Freed err");
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break;
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case LISPVAL_SYM:
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if(VERBOSE) printfln("Freeing sym");
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if (VERBOSE)
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printfln("Freeing sym");
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if (v->sym != NULL)
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free(v->sym);
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v->sym = NULL;
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if (v != NULL) free(v);
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if(VERBOSE) printfln("Freed sym");
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if (v != NULL)
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free(v);
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if (VERBOSE)
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printfln("Freed sym");
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break;
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case LISPVAL_FUNC:
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if(VERBOSE) printfln("Freeing func");
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if (VERBOSE)
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printfln("Freeing func");
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if (v->funcname != NULL)
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free(v->funcname);
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v->funcname = NULL;
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if (v != NULL) free(v);
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if(VERBOSE) printfln("Freed func");
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if (v != NULL)
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free(v);
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if (VERBOSE)
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printfln("Freed func");
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// Don't do anything with v->func for now
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// Though we could delete the pointer to the function later
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// free(v->func);
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break;
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case LISPVAL_SEXPR:
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case LISPVAL_QEXPR:
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if(VERBOSE) printfln("Freeing sexpr|qexpr");
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if(v==NULL || v->count !=0) return;
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if (VERBOSE)
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printfln("Freeing sexpr|qexpr");
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if (v == NULL || v->count != 0)
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return;
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for (int i = 0; i < v->count; i++) {
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if (v->cell[i] != NULL)
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delete_lispval(v->cell[i]);
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@ -183,11 +207,14 @@ void delete_lispval(lispval* v)
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if (v->cell != NULL)
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free(v->cell);
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v->cell = NULL;
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if (v != NULL) free(v);
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if(VERBOSE) printfln("Freed sexpr|qexpr");
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if (v != NULL)
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free(v);
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if (VERBOSE)
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printfln("Freed sexpr|qexpr");
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break;
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default:
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if(VERBOSE) printfln("Error: Unknown expression type for pointer %p of type %i", v, v->type);
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if (VERBOSE)
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printfln("Error: Unknown expression type for pointer %p of type %i", v, v->type);
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}
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// v = NULL; this is only our local pointer, sadly.
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}
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@ -199,7 +226,8 @@ struct lispenv {
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lispval** vals; // list of pointers to vals
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};
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lispenv* new_lispenv(){
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lispenv* new_lispenv()
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{
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lispenv* n = malloc(sizeof(lispenv));
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n->count = 0;
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n->syms = NULL;
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@ -207,8 +235,9 @@ lispenv* new_lispenv(){
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return n;
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}
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void destroy_lispenv(lispenv* env){
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for(int i=0; i< env->count; i++){
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void destroy_lispenv(lispenv* env)
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{
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for (int i = 0; i < env->count; i++) {
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free(env->syms[i]);
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free(env->vals[i]);
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env->syms[i] = NULL;
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@ -223,9 +252,10 @@ void destroy_lispenv(lispenv* env){
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}
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lispval* clone_lispval(lispval* old);
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lispval* get_from_lispenv(char* sym, lispenv* env){
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for(int i=0; i<env->count; i++){
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if(strcmp(env->syms[i], sym) == 0){
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lispval* get_from_lispenv(char* sym, lispenv* env)
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{
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for (int i = 0; i < env->count; i++) {
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if (strcmp(env->syms[i], sym) == 0) {
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return clone_lispval(env->vals[i]);
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// return env->vals[i];
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}
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@ -233,16 +263,17 @@ lispval* get_from_lispenv(char* sym, lispenv* env){
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return lispval_err("Error: unbound symbol");
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}
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void insert_in_lispenv(char* sym, lispval* v, lispenv* env){
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void insert_in_lispenv(char* sym, lispval* v, lispenv* env)
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{
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int found = 0;
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for(int i=0; i<env->count; i++){
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if(strcmp(env->syms[i], sym) == 0){
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for (int i = 0; i < env->count; i++) {
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if (strcmp(env->syms[i], sym) == 0) {
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delete_lispval(env->vals[i]);
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env->vals[i] = clone_lispval(v);
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found = 1;
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}
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}
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if(found == 0){
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if (found == 0) {
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// Expand memory *for the arrays*
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env->count++;
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env->syms = realloc(env->syms, sizeof(char*) * env->count);
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@ -364,10 +395,13 @@ void print_lispval_tree(lispval* v, int indent_level)
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printfln("Error: unknown lispval type\n");
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// printfln("%s", v->sym);
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}
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if(VERBOSE > 1) printfln("Freeing indent");
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if (indent!=NULL) free(indent);
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if (VERBOSE > 1)
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printfln("Freeing indent");
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if (indent != NULL)
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free(indent);
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indent = NULL;
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if(VERBOSE > 1) printfln("Freed indent");
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if (VERBOSE > 1)
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printfln("Freed indent");
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}
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void print_lispval_parenthesis(lispval* v)
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@ -605,7 +639,8 @@ lispval* builtin_join(lispval* l, lispenv* e)
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}
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// Define a variable
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lispval* builtin_def(lispval* v, lispenv* env){
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lispval* builtin_def(lispval* v, lispenv* env)
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{
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// Takes one argument: def { { a b } { 1 2 } }
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lispval* source = v->cell[0];
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LISPVAL_ASSERT(v->count == 1, "Error: function def passed too many arguments");
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@ -617,11 +652,14 @@ lispval* builtin_def(lispval* v, lispenv* env){
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lispval* symbols = source->cell[0];
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lispval* values = source->cell[1];
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for(int i; i < symbols->count; i++){
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for (int i; i < symbols->count; i++) {
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LISPVAL_ASSERT(symbols->cell[i]->type == LISPVAL_SYM, "Error: in function def, the first list of items should be of type symbol: def { { a b } { 1 2 } }");
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if(VERBOSE) print_lispval_tree(symbols, 0);
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if(VERBOSE) print_lispval_tree(values, 0);
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if(VERBOSE) printf("\n");
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if (VERBOSE)
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print_lispval_tree(symbols, 0);
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if (VERBOSE)
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print_lispval_tree(values, 0);
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if (VERBOSE)
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printf("\n");
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insert_in_lispenv(symbols->cell[i]->sym, values->cell[i], env);
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}
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return lispval_sexpr(); // ()
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@ -678,19 +716,23 @@ lispval* builtin_math_ops(char* op, lispval* v, lispenv* e)
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}
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// Fit the simple math ops using the above code
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lispval* builtin_add(lispval* v, lispenv* env) {
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lispval* builtin_add(lispval* v, lispenv* env)
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{
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return builtin_math_ops("+", v, env);
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}
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lispval* builtin_substract(lispval* v, lispenv* env) {
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lispval* builtin_substract(lispval* v, lispenv* env)
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{
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return builtin_math_ops("-", v, env);
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}
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lispval* builtin_multiply(lispval* v, lispenv* env) {
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lispval* builtin_multiply(lispval* v, lispenv* env)
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{
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return builtin_math_ops("*", v, env);
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}
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lispval* builtin_divide(lispval* v, lispenv* env) {
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lispval* builtin_divide(lispval* v, lispenv* env)
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{
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return builtin_math_ops("/", v, env);
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}
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@ -719,14 +761,18 @@ lispval* builtin_functions(char* func, lispval* v, lispenv* env)
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}
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// Add builtins to an env
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void lispenv_add_builtin(char* funcname, lispbuiltin func, lispenv* env ){
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if(VERBOSE) printfln("Adding func: name: %s, pointer: %p", funcname, func);
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void lispenv_add_builtin(char* funcname, lispbuiltin func, lispenv* env)
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{
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if (VERBOSE)
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printfln("Adding func: name: %s, pointer: %p", funcname, func);
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lispval* f = lispval_func(func, funcname);
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if(VERBOSE) print_lispval_tree(f, 0);
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insert_in_lispenv(funcname, f,env);
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if (VERBOSE)
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print_lispval_tree(f, 0);
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insert_in_lispenv(funcname, f, env);
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delete_lispval(f);
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}
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void lispenv_add_builtins(lispenv* env){
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void lispenv_add_builtins(lispenv* env)
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{
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// Math functions
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lispenv_add_builtin("+", builtin_add, env);
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lispenv_add_builtin("-", builtin_substract, env);
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@ -746,92 +792,112 @@ void lispenv_add_builtins(lispenv* env){
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// Evaluate the lispval
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lispval* evaluate_lispval(lispval* l, lispenv* env)
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{
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if(VERBOSE) printfln("Evaluating lispval");
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if (VERBOSE)
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printfln("Evaluating lispval");
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// Check if this is neither an s-expression nor a symbol; otherwise return as is.
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if(VERBOSE) printfln("");
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if (VERBOSE)
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printfln("");
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if (l->type != LISPVAL_SEXPR && l->type != LISPVAL_SYM)
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return l;
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// Check if this is a symbol
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if(VERBOSE) printfln("Checking if this is a symbol");
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if(l->type == LISPVAL_SYM){
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if (VERBOSE)
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printfln("Checking if this is a symbol");
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if (l->type == LISPVAL_SYM) {
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// Unclear how I want to structure this so as to not get memory errors.
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return get_from_lispenv(l->sym, env);
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}
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// Evaluate the children if needed
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if(VERBOSE) printfln("Evaluating children");
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if (VERBOSE)
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printfln("Evaluating children");
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for (int i = 0; i < l->count; i++) {
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if (l->cell[i]->type == LISPVAL_SEXPR || l->cell[i]->type == LISPVAL_SYM) {
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// l->cell[i] =
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if(VERBOSE) printfln("");
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if (VERBOSE)
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printfln("");
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lispval* new = evaluate_lispval(l->cell[i], env);
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// delete_lispval(l->cell[i]);
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// ^ gave me a "double free" error.
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l->cell[i] = new;
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if(VERBOSE) printfln("");
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if (VERBOSE)
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printfln("");
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}
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}
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// Check if any are errors.
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if(VERBOSE) printfln("Checking for errors in children");
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if (VERBOSE)
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printfln("Checking for errors in children");
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lispval* err = NULL;
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for (int i = 0; i < l->count; i++) {
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if (l->cell[i]->type == LISPVAL_ERR) {
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err = clone_lispval(l->cell[i]);
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}
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}
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if (err != NULL){
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if (err != NULL) {
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/*
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for (int i = 0; i < l->count; i++) {
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||||
delete_lispval(l->cell[i]);
|
||||
}
|
||||
*/
|
||||
if(VERBOSE) printfln("Returning error");
|
||||
if (VERBOSE)
|
||||
printfln("Returning error");
|
||||
return err;
|
||||
}
|
||||
|
||||
// Check if the first element is an operation.
|
||||
if(VERBOSE) printfln("Checking is first element is a function");
|
||||
if (VERBOSE)
|
||||
printfln("Checking is first element is a function");
|
||||
if (l->count >= 2 && ((l->cell[0])->type == LISPVAL_FUNC)) {
|
||||
if(VERBOSE) printfln("Passed check");
|
||||
if(VERBOSE) printfln("Operating on:");
|
||||
if(VERBOSE) print_lispval_tree(l, 4);
|
||||
|
||||
if (VERBOSE)
|
||||
printfln("Passed check");
|
||||
if (VERBOSE)
|
||||
printfln("Operating on:");
|
||||
if (VERBOSE)
|
||||
print_lispval_tree(l, 4);
|
||||
|
||||
lispval* temp = clone_lispval(l);
|
||||
lispval* f = pop_lispval(temp, 0);
|
||||
// pop is destructive.
|
||||
lispval* operands = temp;
|
||||
if(VERBOSE) printfln("Allocated memory");
|
||||
if (VERBOSE)
|
||||
printfln("Allocated memory");
|
||||
// lispval* operation = clone_lispval(l->cell[0]);
|
||||
// lispval* operands = lispval_sexpr();
|
||||
// for (int i = 1; i < l->count; i++) {
|
||||
// lispval_append_child(operands, l->cell[i]);
|
||||
// }
|
||||
if(VERBOSE) printfln("Applying function to operands");
|
||||
if (VERBOSE)
|
||||
printfln("Applying function to operands");
|
||||
// lispval* answer = lispval_num(42);
|
||||
lispval* answer= f->func(operands, env);
|
||||
lispval* answer = f->func(operands, env);
|
||||
|
||||
if(VERBOSE) printfln("Applied function to operands");
|
||||
if(VERBOSE) printfln("Cleaning up");
|
||||
if (VERBOSE)
|
||||
printfln("Applied function to operands");
|
||||
if (VERBOSE)
|
||||
printfln("Cleaning up");
|
||||
// builtin_functions(operation->sym, l, env);
|
||||
delete_lispval(f);
|
||||
delete_lispval(operands);
|
||||
// delete_lispval(temp);
|
||||
if(VERBOSE) printfln("Returning");
|
||||
if (VERBOSE)
|
||||
printfln("Returning");
|
||||
return answer;
|
||||
}
|
||||
return l;
|
||||
}
|
||||
// Increase or decrease verbosity level manually
|
||||
void modify_verbosity(char* command){
|
||||
if(strcmp("VERBOSE=0", command) == 0){
|
||||
VERBOSE=0;
|
||||
void modify_verbosity(char* command)
|
||||
{
|
||||
if (strcmp("VERBOSE=0", command) == 0) {
|
||||
VERBOSE = 0;
|
||||
}
|
||||
if(strcmp("VERBOSE=1", command) == 0){
|
||||
VERBOSE=1;
|
||||
if (strcmp("VERBOSE=1", command) == 0) {
|
||||
VERBOSE = 1;
|
||||
printfln("VERBOSE=1");
|
||||
}
|
||||
if(strcmp("VERBOSE=2", command) == 0){
|
||||
VERBOSE=2;
|
||||
if (strcmp("VERBOSE=2", command) == 0) {
|
||||
VERBOSE = 2;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -862,16 +928,24 @@ int main(int argc, char** argv)
|
|||
Number, Symbol, Sexpr, Qexpr, Expr, Mumble);
|
||||
|
||||
// Create an environment
|
||||
if(VERBOSE) printfln("Creating lispenv");
|
||||
if (VERBOSE)
|
||||
printfln("Creating lispenv");
|
||||
lispenv* env = new_lispenv();
|
||||
if(VERBOSE) printfln("Created lispenv");
|
||||
if(VERBOSE) printfln("Adding builtins");
|
||||
if (VERBOSE)
|
||||
printfln("Created lispenv");
|
||||
if (VERBOSE)
|
||||
printfln("Adding builtins");
|
||||
lispenv_add_builtins(env);
|
||||
if(VERBOSE) printfln("Added builtins");
|
||||
if(VERBOSE) printfln("Environment contents: %i", env->count);
|
||||
if(VERBOSE) printfln(" env->syms[0]: %s", env->syms[0]);
|
||||
if(VERBOSE) print_lispval_tree(env->vals[0], 2);
|
||||
if(VERBOSE) printfln("\n");
|
||||
if (VERBOSE)
|
||||
printfln("Added builtins");
|
||||
if (VERBOSE)
|
||||
printfln("Environment contents: %i", env->count);
|
||||
if (VERBOSE)
|
||||
printfln(" env->syms[0]: %s", env->syms[0]);
|
||||
if (VERBOSE)
|
||||
print_lispval_tree(env->vals[0], 2);
|
||||
if (VERBOSE)
|
||||
printfln("\n");
|
||||
// Initialize a repl
|
||||
int loop = 1;
|
||||
while (loop) {
|
||||
|
|
@ -909,13 +983,16 @@ int main(int argc, char** argv)
|
|||
|
||||
lispval* answer = evaluate_lispval(l, env);
|
||||
{
|
||||
if(VERBOSE) printfln("Result: ");
|
||||
if (VERBOSE)
|
||||
printfln("Result: ");
|
||||
print_lispval_parenthesis(answer);
|
||||
if(VERBOSE) print_lispval_tree(answer, 0);
|
||||
if (VERBOSE)
|
||||
print_lispval_tree(answer, 0);
|
||||
printf("\n");
|
||||
}
|
||||
delete_lispval(answer);
|
||||
if(VERBOSE > 1) printfln("Answer after deletion: %p", answer);
|
||||
if (VERBOSE > 1)
|
||||
printfln("Answer after deletion: %p", answer);
|
||||
// delete_lispval(answer); // do this twice, just to see.
|
||||
//if(VERBOSE) printfln("Deleting this lispval:");
|
||||
// if(VERBOSE) print_lispval_tree(l,2);
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user