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libphutil/support/xhpast/astnode.hpp
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astnode.hpp
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/*
* Copyright 2011 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <cstdio>
#include <cstdlib>
#include <list>
#include <string>
namespace xhpast {
class Token;
typedef std::list<Token *> token_list_t;
class Token {
public:
unsigned int type;
std::string value;
unsigned int lineno;
unsigned int n;
Token(unsigned int type, char *value, unsigned int n) :
type(type),
value(value),
n(n) {
}
};
class Node;
typedef std::list<Node *> node_list_t;
class Node {
public:
unsigned int type;
int l_tok;
int r_tok;
node_list_t children;
Node() : type(0), l_tok(-1), r_tok(-1) {};
Node(unsigned int type) : type(type), l_tok(-1), r_tok(-1) {};
Node(unsigned int type, int end_tok) :
type(type) {
this->l_tok = end_tok;
this->r_tok = end_tok;
}
Node(unsigned int type, int l_tok, int r_tok) :
type(type),
l_tok(l_tok),
r_tok(r_tok) {
}
Node *appendChild(Node *node) {
this->children.push_back(node);
return this->setEnd(node);
}
Node *appendChildren(Node *node) {
for (node_list_t::iterator ii = node->children.begin(); ii != node->children.end(); ++ii) {
this->children.push_back(*ii);
this->setEnd(*ii);
}
return this;
}
Node *firstChild() {
if (this->children.empty()) {
return NULL;
}
return *(this->children.begin());
}
Node *setType(unsigned int t) {
this->type = t;
return this;
}
Node *setEnd(Node *n) {
if (!n) {
fprintf(stderr, "Trying to setEnd() a null node to one of type %d\n", this->type);
exit(1);
}
if (n->r_tok != -1 && (n->r_tok > this->r_tok || (this->r_tok == -1))) {
this->r_tok = n->r_tok;
}
if (this->l_tok == -1) {
this->l_tok = n->l_tok;
}
return this;
}
Node *setBegin(Node *n) {
if (!n) {
fprintf(stderr, "Trying to setBegin() a null node to one of type %d\n", this->type);
exit(1);
}
if (n->l_tok != -1 && (n->l_tok < this->l_tok || (this->l_tok == -1))) {
this->l_tok = n->l_tok;
}
if (this->r_tok == -1) {
this->r_tok = n->r_tok;
}
return this;
}
};
}
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