+%type let_val {let_val*}
+%destructor let_val {free_let_val($$);}
+let_val(val) ::= NULL. {
+ val = init_let_val(PSI_LET_NULL, NULL);
+}
+let_val(val) ::= num_exp(exp). {
+ val = init_let_val(PSI_LET_NUMEXP, exp);
+}
+let_val(val) ::= CALLOC LPAREN let_calloc(alloc) RPAREN. {
+ val = init_let_val(PSI_LET_CALLOC, alloc);
+}
+let_val(val) ::= let_func(func). {
+ val = init_let_val(PSI_LET_FUNC, func);
+}
+/*
+let_stmt(let) ::= LET decl_var(var) EQUALS reference(r) NULL EOS. {
+ let = init_let_stmt(var, init_let_val(PSI_LET_NULL, NULL, r?PSI_LET_REFERENCE:0));
+}
+let_stmt(let) ::= LET decl_var(var) EQUALS reference(r) num_exp(exp) EOS. {
+ let = init_let_stmt(var, init_let_val(PSI_LET_NUMEXP, exp, r?PSI_LET_REFERENCE:0));
+}
+let_stmt(let) ::= LET decl_var(var) EQUALS reference(r) CALLOC LPAREN let_calloc(alloc) RPAREN EOS. {
+ let = init_let_stmt(var, init_let_val(PSI_LET_CALLOC, alloc, r?PSI_LET_REFERENCE:0));
+}
+let_stmt(let) ::= LET decl_var(var) EQUALS reference(r) let_func(func) EOS. {
+ let = init_let_stmt(var, init_let_val(PSI_LET_FUNC, func, r?PSI_LET_REFERENCE:0));
+}
+let_stmt(let) ::= LET decl_var(var) EQUALS decl_var(val) EOS. {
+ let = init_let_stmt(var, init_let_val(PSI_LET_VAR, val, 0));
+}
+*/
+%type let_calloc {let_calloc*}
+%destructor let_calloc {free_let_calloc($$);}
+let_calloc(alloc) ::= num_exp(nmemb) COMMA num_exp(size). {
+ alloc = init_let_calloc(nmemb, size);
+}