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ast.c
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ast.c
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#include "def.h"
struct ASTNode *mknode(int num, int kind, int pos, ...) {
struct ASTNode *T = (struct ASTNode *)calloc(1, sizeof(struct ASTNode));
int i;
T->kind = kind;
T->pos = pos;
va_list pArgs;
va_start(pArgs, pos);
for(i=0; i<num; i++)
T->ptr[i] = va_arg(pArgs, struct ASTNode *);
while (i < 3) T->ptr[i++] = NULL;
va_end(pArgs);
return T;
}
void display(struct ASTNode *T,int indent) {
if (T) {
switch (T->kind) {
case EXT_DEF_LIST:
display(T->ptr[0], indent); //EXT_VAR_DEF|FUNC_DEF
display(T->ptr[1], indent); //EXT_DEF_LIST
break;
case TYPE:
printf("%*cTYPE：%s\n", indent, ' ', T->type_id);
break;
case EXT_VAR_DEF:
printf("%*cEXT_VAR_DEF：(%d)\n", indent, ' ', T->pos);
display(T->ptr[0], indent+3); //TYPE
printf("%*cVAR_NAME：\n", indent+3, ' ');
display(T->ptr[1], indent+6); //EXT_DEC_LIST
break;
case EXT_DEC_LIST:
display(T->ptr[0], indent); //VAR_DEC|ARRAY_DEC
display(T->ptr[1], indent); //EXT_DEC_LIST
break;
case VAR_DEC:
if (T->ptr[0]) {
printf("%*c%s ASSIGNOP\n", indent, ' ', T->type_id);
display(T->ptr[0], indent+3); //EXP
} else {
printf("%*c%s\n", indent, ' ', T->type_id);
}
break;
case FUNC_DEF:
printf("%*cFUNC_DEF：(%d)\n", indent, ' ', T->pos);
display(T->ptr[0], indent+3); //TYPE
display(T->ptr[1], indent+3); //FUNC_DEC
display(T->ptr[2], indent+3); //COMP_STM
break;
case FUNC_DEC:
printf("%*cFUNC_NAME：%s\n", indent, ' ', T->type_id);
if (T->ptr[0]) {
printf("%*cPARAM_LIST：\n", indent, ' ');
display(T->ptr[0], indent+3); //PARAM_LIST
} else {
printf("%*cNO_PARAM\n", indent+3, ' ');
}
break;
case PARAM_LIST:
display(T->ptr[0], indent); //PARAM_DEC|ARRAY_PARAM
display(T->ptr[1], indent); //PARAM_LIST
break;
case PARAM_DEC:
printf("%*cNAME:%s,TYPE:%s\n", indent, ' ', T->type_id, T->ptr[0]->type_id);
break;
case COMP_STM:
printf("%*cCOMP_STM：(%d)\n", indent, ' ', T->pos);
display(T->ptr[0], indent+3); //STM_LIST
break;
case STM_LIST:
display(T->ptr[0], indent); //EXP_STMT, RETURN...
display(T->ptr[1], indent); //STM_LIST
break;
case VAR_DEF:
printf("%*cVAR_DEF：(%d)\n", indent, ' ', T->pos);
display(T->ptr[0], indent+3); //TYPE
printf("%*cVAR_NAME：\n", indent+3, ' ');
display(T->ptr[1], indent+6); //VAR_DEC_LIST
break;
case VAR_DEC_LIST:
display(T->ptr[0], indent); //VAR_DEC
display(T->ptr[1], indent); //VAR_DEC_LIST
break;
case EXP_STMT:
printf("%*cEXP_STMT：(%d)\n", indent, ' ', T->pos);
display(T->ptr[0], indent+3); //EXP
break;
case RETURN:
printf("%*cRETURN：(%d)\n", indent, ' ', T->pos);
display(T->ptr[0], indent+3); //EXP
break;
case IF_THEN:
printf("%*cIF(IF_THEN)：(%d)\n", indent, ' ', T->pos);
printf("%*cCONDITION：\n", indent+3, ' ');
display(T->ptr[0], indent+6); //EXP
printf("%*cIF_STMT：(%d)\n",indent+3,' ',T->pos);
display(T->ptr[1], indent+6); //STMT
break;
case IF_THEN_ELSE:
printf("%*cIF(IF_THEN_ELSE)：(%d)\n", indent, ' ', T->pos);
printf("%*cCONDITION：\n", indent+3, ' ');
display(T->ptr[0], indent+6); //EXP
printf("%*cIF_STMT：(%d)\n", indent+3, ' ', T->pos);
display(T->ptr[1], indent+6); //STMT
printf("%*cELSE_STMT：(%d)\n", indent+3, ' ', T->pos);
display(T->ptr[2], indent+6); //STMT
break;
case WHILE:
printf("%*cWHILE：(%d)\n",indent, ' ', T->pos);
printf("%*cCONDITION：\n", indent+3, ' ');
display(T->ptr[0], indent+6); //EXP
printf("%*cSTMT：(%d)\n", indent+3, ' ', T->pos);
display(T->ptr[1], indent+6); //STMT
break;
case CONTINUE:
printf("%*cCONTINUE(%d)\n", indent, ' ', T->pos);
break;
case BREAK:
printf("%*cBREAK(%d)\n", indent, ' ', T->pos);
break;
case ID:
printf("%*c%s:ID\n", indent, ' ', T->type_id);
break;
case INT:
printf("%*c%d:INT\n", indent, ' ', T->type_int);
break;
case FLOAT:
printf("%*c%f:FLOAT\n", indent, ' ', T->type_float);
break;
case ASSIGNOP:
printf("%*cASSIGNOP\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case COMP_ASSIGN:
printf("%*cCOMP_ASSIGN %s\n", indent, ' ', T->type_id);
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case AND:
printf("%*cAND\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case OR:
printf("%*cOR\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case RELOP:
printf("%*cRELOP %s\n", indent, ' ', T->type_id);
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case PLUS:
printf("%*cPLUS\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case MINUS:
printf("%*cMINUS\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case STAR:
printf("%*cMULT\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case DIV:
printf("%*cDIV\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case MOD:
printf("%*cMOD\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case BITAND:
printf("%*cBITAND\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case BITOR:
printf("%*cBITOR\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case BITXOR:
printf("%*cBITXOR\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case BITSHL:
printf("%*cBITSHL\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case BITSHR:
printf("%*cBITSHR\n", indent, ' ');
display(T->ptr[0], indent+3);
display(T->ptr[1], indent+3);
break;
case NOT:
printf("%*cNOT\n", indent, ' ');
display(T->ptr[0], indent+3);
break;
case UMINUS:
printf("%*cUMINUS\n", indent, ' ');
display(T->ptr[0], indent+3);
break;
case DPLUS:
case DMINUS:
printf("%*c%s\n", indent, ' ', T->type_id);
display(T->ptr[0], indent+3);
break;
case FUNC_CALL:
printf("%*cFUNC_CALL：%s(%d)\n", indent, ' ', T->type_id, T->pos);
if (T->ptr[0]) {
printf("%*cPARAM_LIST：\n", indent+3, ' ');
display(T->ptr[0], indent+6); //ARGS
} else {
printf("%*cNO_PARAM\n", indent+6, ' ');
}
break;
case ARGS:
display(T->ptr[0], indent); //EXP
display(T->ptr[1], indent); //ARGS
break;
case ARRAY_DEC:
printf("%*cARRAY_DEC:%s\n", indent, ' ', T->type_id);
printf("%*cARRAY_SUB_LIST:\n", indent+3, ' ');
display(T->ptr[0], indent+6); //ARRAY_SUB_LIST
display(T->ptr[1], indent+3); //ARRAY_INIT_LIST
break;
case ARRAY_SUB_LIST:
if (T->ptr[0] == NULL) {
printf("%*cNO EXP\n", indent, ' ');
display(T->ptr[1], indent); //ARRAY_SUB_LIST
} else {
display(T->ptr[0], indent); //EXP
display(T->ptr[1], indent); //ARRAY_SUB_LIST
}
break;
case ARRAY_REF:
printf("%*cARRAY_REF：%s\n", indent, ' ', T->type_id);
printf("%*cARRAY_SUB_LIST:\n", indent+3, ' ');
display(T->ptr[0], indent+6);
break;
case ARRAY_INIT_LIST:
printf("%*cARRAY_INIT_LIST:\n", indent, ' ');
display(T->ptr[0], indent+3);
break;
case ARRAY_PARAM:
printf("%*cARRAY_PARAM:\n", indent, ' ');
printf("%*cNAME:%s,TYPE:%s\n", indent+3, ' ', T->type_id, T->ptr[0]->type_id);
printf("%*cARRAY_SUB_LIST:\n", indent+3, ' ');
display(T->ptr[1], indent+6);
break;
case SYSCALL:
printf("%*SYSCALL %d\n", indent, ' ', T->type_int);
break;
}
}
}