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# include <stdlib.h>
# include "A.h"
/*
* node constructor functions
*/
/* A_CompoundStm - returns a compound statement of stm1, stm2 */
A_stm A_CompoundStm (A_stm stm1, A_stm stm2) {
A_stm s = malloc(sizeof(*s));
s->type = A_compoundStm;
s->u.compound.stm1 = stm1;
s->u.compound.stm2 = stm2;
return s;
}
/* A_AssignStm - returns a assign statement of id, exp */
A_stm A_AssignStm (char *id, A_exp exp) {
A_stm s = malloc(sizeof(*s));
s->type = A_assignStm;
s->u.assign.id = id;
s->u.assign.exp = exp;
return s;
}
/* A_PrintStm - returns a print statement of exps */
A_stm A_PrintStm (A_expList exps) {
A_stm s = malloc(sizeof(*s));
s->type = A_printStm;
s->u.print.exps = exps;
return s;
}
/* A_IdExp - returns an id expression of id */
A_exp A_IdExp (char *id) {
A_exp e = malloc(sizeof(*e));
e->type = A_idExp;
e->u.id = id;
return e;
}
/* A_NumExp - returns a number expression of num */
A_exp A_NumExp (int num) {
A_exp e = malloc(sizeof(*e));
e->type = A_numExp;
e->u.num = num;
return e;
}
/* A_OpExp - returns an operation expression of exp1, op, exp2 */
A_exp A_OpExp (A_exp exp1, A_binop op, A_exp exp2) {
A_exp e = malloc(sizeof(*e));
e->type = A_opExp;
e->u.op.exp1 = exp1;
e->u.op.op = op;
e->u.op.exp2 = exp2;
return e;
}
/* A_EseqExp - returns a seqeunce expression of stm, exp */
A_exp A_EseqExp (A_stm stm, A_exp exp) {
A_exp e = malloc(sizeof(*e));
e->type = A_eseqExp;
e->u.eseq.stm = stm;
e->u.eseq.exp = exp;
return e;
}
/* A_PairExpList - returns a list expression pair of head, tail */
A_expList A_PairExpList (A_exp head, A_expList tail) {
A_expList l = malloc(sizeof(*l));
l->type = A_pairExpList;
l->u.pair.head = head;
l->u.pair.tail = tail;
return l;
}
/* A_LastExpList - returns a expression list end of last */
A_expList A_LastExpList (A_exp last) {
A_expList l = malloc(sizeof(*l));
l->type = A_lastExpList;
l->u.last = last;
return l;
}
int main (int argc, char** argv) {
return 0;
}
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