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jsast.cpp
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jsast.cpp
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#include "libfbjs/node.hpp"
#include <iostream>
#include <string.h>
#include <map>
using namespace fbjs;
using namespace std;
typedef map<string, int> symbol_t;
#define for_nodes(p, i) \
for (node_list_t::iterator i = (p)->childNodes().begin(); \
i != (p)->childNodes().end(); \
++i)
char *get_node_name(Node *node) {
if (typeid(*node) == typeid(NodeProgram)) {
return "Program";
} else if (typeid(*node) == typeid(NodeStatementList)) {
return "StatementList";
} else if (typeid(*node) == typeid(NodeExpression)) {
return "Expression";
} else if (typeid(*node) == typeid(NodeNumericLiteral)) {
return "NumericLiteral";
} else if (typeid(*node) == typeid(NodeStringLiteral)) {
return "StringLiteral";
} else if (typeid(*node) == typeid(NodeRegexLiteral)) {
return "RegexLiteral";
} else if (typeid(*node) == typeid(NodeBooleanLiteral)) {
return "BooleanLiteral";
} else if (typeid(*node) == typeid(NodeNullLiteral)) {
return "NullLiteral";
} else if (typeid(*node) == typeid(NodeThis)) {
return "This";
} else if (typeid(*node) == typeid(NodeEmptyExpression)) {
return "EmptyExpression";
} else if (typeid(*node) == typeid(NodeOperator)) {
return "Operator";
} else if (typeid(*node) == typeid(NodeConditionalExpression)) {
return "ConditionalExpression";
} else if (typeid(*node) == typeid(NodeParenthetical)) {
return "Parenthetical";
} else if (typeid(*node) == typeid(NodeAssignment)) {
return "Assignment";
} else if (typeid(*node) == typeid(NodeUnary)) {
return "Unary";
} else if (typeid(*node) == typeid(NodePostfix)) {
return "Postfix";
} else if (typeid(*node) == typeid(NodeIdentifier)) {
return "Identifier";
} else if (typeid(*node) == typeid(NodeFunctionCall)) {
return "FunctionCall";
} else if (typeid(*node) == typeid(NodeFunctionConstructor)) {
return "FunctionConstructor";
} else if (typeid(*node) == typeid(NodeObjectLiteral)) {
return "ObjectLiteral";
} else if (typeid(*node) == typeid(NodeArrayLiteral)) {
return "ArrayLiteral";
} else if (typeid(*node) == typeid(NodeStaticMemberExpression)) {
return "StaticMemberExpression";
} else if (typeid(*node) == typeid(NodeDynamicMemberExpression)) {
return "DynamicMemberExpression";
} else if (typeid(*node) == typeid(NodeStatement)) {
return "Statement";
} else if (typeid(*node) == typeid(NodeStatementWithExpression)) {
return "StatementWithExpression";
} else if (typeid(*node) == typeid(NodeVarDeclaration)) {
return "VarDeclaration";
} else if (typeid(*node) == typeid(NodeFunctionDeclaration)) {
return "FunctionDeclaration";
} else if (typeid(*node) == typeid(NodeFunctionExpression)) {
return "FunctionExpression";
} else if (typeid(*node) == typeid(NodeArgList)) {
return "ArgList";
} else if (typeid(*node) == typeid(NodeIf)) {
return "If";
} else if (typeid(*node) == typeid(NodeWith)) {
return "With";
} else if (typeid(*node) == typeid(NodeTry)) {
return "Try";
} else if (typeid(*node) == typeid(NodeLabel)) {
return "Label";
} else if (typeid(*node) == typeid(NodeCaseClause)) {
return "CaseClause";
} else if (typeid(*node) == typeid(NodeSwitch)) {
return "Switch";
} else if (typeid(*node) == typeid(NodeDefaultClause)) {
return "DefaultClause";
} else if (typeid(*node) == typeid(NodeObjectLiteralProperty)) {
return "ObjectLiteralProperty";
} else if (typeid(*node) == typeid(NodeForLoop)) {
return "ForLoop";
} else if (typeid(*node) == typeid(NodeForIn)) {
return "ForIn";
} else if (typeid(*node) == typeid(NodeWhile)) {
return "While";
} else if (typeid(*node) == typeid(NodeDoWhile)) {
return "DoWhile";
}
return "Unknown";
}
string get_node_value(Node *node) {
if (typeid(*node) == typeid(NodeStringLiteral)) {
NodeStringLiteral *nsl = static_cast<NodeStringLiteral *>(node);
return nsl->unquoted_value();
} else if (typeid(*node) == typeid(NodeIdentifier)) {
NodeIdentifier *ni = static_cast<NodeIdentifier *>(node);
return ni->name();
}
return "";
}
void print_tree(Node *node) {
printf("[\"%s\", [", get_node_name(node));
bool skip_body = (typeid(*node) == typeid(NodeFunctionExpression));
bool is_first = true;
for_nodes(node, ii) {
if (*ii) {
if (skip_body && typeid(**ii) == typeid(NodeStatementList)) {
break;
}
if (is_first) {
is_first = false;
} else {
printf(", ");
}
print_tree(*ii);
}
}
printf("]");
string s = get_node_value(node);
if (s.length()) {
int len = s.length();
char *dst = new char[s.length() * 2];
const char *src = s.c_str();
const char *end = src + len;
char *ptr = dst;
for (; src != end; src++) {
if (*src == '\\' || *src == '"') {
(*ptr++) = '\\';
}
(*ptr++) = *src;
}
(*ptr) = 0;
printf(", \"%s\", \"%d\"", dst, node->lineno());
delete[] dst;
}
printf("]");
}
int main(int argc, char* argv[]) {
try {
NodeProgram root(stdin); // parses
print_tree(&root);
// printf("\n");
} catch (ParseException ex) {
printf("Parse Error: %s\n", ex.what());
return 1;
}
}

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jsast.cpp (5 KB)

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