Starting to stand up the parser using std::pair
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@@ -1,22 +1,25 @@
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// This file is distributed under the BSD License.
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// See LICENSE.TXT for details.
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#include <boost/bind.hpp>
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#include <iostream>
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#include <map>
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#include <fstream>
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#include "langkit_lexer.hpp"
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//#include "lexer.hpp"
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//#include "parser.hpp"
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//#include "eval.hpp"
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#include "langkit_parser.hpp"
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class TokenType { public: enum Type { Whitespace, Identifier, Number, Operator, Parens_Open, Parens_Close,
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Square_Open, Square_Close, Curly_Open, Curly_Close, Comma, Quoted_String, Single_Quoted_String, Carriage_Return, Semicolon }; };
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void debug_print(Token &token) {
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std::cout << "Token: " << token.text << "(" << token.identifier << ") @ (" << token.start.column
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<< ", " << token.start.line << ") to (" << token.end.column << ", " << token.end.line << ") " << std::endl;
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}
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void debug_print(std::vector<Token> &tokens) {
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for (unsigned int i = 0; i < tokens.size(); ++i) {
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std::cout << "Token: " << tokens[i].text << "(" << tokens[i].identifier << ") @ (" << tokens[i].start.column
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<< ", " << tokens[i].start.line << ") to (" << tokens[i].end.column << ", " << tokens[i].end.line << ") " << std::endl;
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debug_print(tokens[i]);
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}
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}
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@@ -39,6 +42,23 @@ std::string load_file(const char *filename) {
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return ret_val;
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}
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void parse(std::vector<Token> &tokens) {
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Rule rule;
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rule.rule = boost::bind(String_Rule, _1, _2, "def");
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Token_Iterator iter = tokens.begin(), end = tokens.end();
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std::pair<Token_Iterator, Token> results = rule(iter, end);
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if (results.first != iter) {
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std::cout << "Parse successful: " << std::endl;
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debug_print(results.second);
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}
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}
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int main(int argc, char *argv[]) {
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std::string input;
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@@ -66,6 +86,8 @@ int main(int argc, char *argv[]) {
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while (input != "quit") {
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std::vector<Token> tokens = lexer.lex(input);
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debug_print(tokens);
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parse(tokens);
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std::cout << "Expression> ";
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std::getline(std::cin, input);
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}
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