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Updated TOKENIZER for the parser.
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‎src/Essentials/Tokenizer.cpp‎

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#include "Tokenizer.h"
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namespace FPL::Tokenizer {
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std::vector<Token> TokenBuilder::ParseToken(const std::string &contentFile) {
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std::vector<Token> AllTokens;
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Token currentToken;
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currentToken.TokenLineNumber = 1;
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for (auto const &element: contentFile) {
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if (currentToken.TokenType == STRING_ESCAPE_SEQUENCE) {
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switch (element) {
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case 'n':
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currentToken.TokenText.append(1, '\n');
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break;
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case 'r':
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currentToken.TokenText.append(1, '\r');
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break;
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case 't':
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currentToken.TokenText.append(1, '\t');
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break;
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case '\\':
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currentToken.TokenText.append(1, '\\');
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break;
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default:
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throw std::runtime_error(std::string("unknown escape sequence: \\") + std::string(1, element) +
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" in string on line " + currentToken.TokenText + ".");
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}
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currentToken.TokenType = CHAINE_LITTERAL;
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continue;
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} else if (currentToken.TokenType == PEUTETRE_COMMENT && element != '/') {
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currentToken.TokenType = OPERATEUR;
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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continue;
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}
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switch (element) {
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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case '8':
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case '9':
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if (currentToken.TokenType == ESPACE_VIDE) {
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currentToken.TokenType = ENTIER;
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currentToken.TokenText.append(1, element);
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} else if (currentToken.TokenType == PEUTETRE_DECIMAL) {
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currentToken.TokenType = DECIMAL;
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currentToken.TokenText.append(1, element);
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} else if (currentToken.TokenType == IDENTIFIANT) {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = ENTIER;
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currentToken.TokenText.append(1, element);
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} else {
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currentToken.TokenText.append(1, element);
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}
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break;
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case '.':
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if (currentToken.TokenType == ESPACE_VIDE) {
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currentToken.TokenType = PEUTETRE_DECIMAL;
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currentToken.TokenText.append(1, element);
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} else if (currentToken.TokenType == ENTIER) {
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currentToken.TokenType = DECIMAL;
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currentToken.TokenText.append(1, element);
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} else if (currentToken.TokenType == CHAINE_LITTERAL) {
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currentToken.TokenText.append(1, element);
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} else {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = OPERATEUR;
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currentToken.TokenText.append(1, element);
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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}
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break;
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case '{':
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case '}':
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case '(':
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case ')':
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case ',':
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case ';':
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case '-':
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case '+':
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case '*':
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case '=':
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case ':':
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case '<':
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case '>':
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case '[':
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case ']':
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if (currentToken.TokenType != CHAINE_LITTERAL) {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = OPERATEUR;
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currentToken.TokenText.append(1, element);
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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} else {
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currentToken.TokenText.append(1, element);
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}
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break;
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case '"':
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if (currentToken.TokenType != CHAINE_LITTERAL) {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = CHAINE_LITTERAL;
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} else if (currentToken.TokenType == CHAINE_LITTERAL) {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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}
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break;
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case ' ':
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case '\t':
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if (currentToken.TokenType == CHAINE_LITTERAL || currentToken.TokenType == COMMENT) {
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currentToken.TokenText.append(1, element);
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} else {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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}
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break;
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case '\r':
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case '\n':
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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++currentToken.TokenLineNumber;
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break;
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case '\\':
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if (currentToken.TokenType == CHAINE_LITTERAL) {
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currentToken.TokenType = STRING_ESCAPE_SEQUENCE;
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} else {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = OPERATEUR;
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currentToken.TokenText.append(1, element);
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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}
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break;
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case '/':
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if (currentToken.TokenType == CHAINE_LITTERAL) {
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currentToken.TokenText.append(1, element);
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} else if (currentToken.TokenType == PEUTETRE_COMMENT) {
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currentToken.TokenType = COMMENT;
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currentToken.TokenText.erase();
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} else {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = PEUTETRE_COMMENT;
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currentToken.TokenText.append(1, element);
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}
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break;
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default:
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if (currentToken.TokenType == ESPACE_VIDE || currentToken.TokenType == ENTIER || currentToken.TokenType == DECIMAL) {
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TokenBuilder::ParseEndToken(currentToken, AllTokens);
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currentToken.TokenType = IDENTIFIANT;
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currentToken.TokenText.append(1, element);
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} else {
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currentToken.TokenText.append(1, element);
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}
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break;
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}
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}
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return AllTokens;
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}
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void TokenBuilder::ParseEndToken(Token &token, std::vector<Token> &tokens) {
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if (token.TokenType == COMMENT) {
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//std::cout << "Commentaire ignoré : " << token.TokenText << std::endl;
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} else if (token.TokenType != ESPACE_VIDE) {
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tokens.push_back(token);
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}
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if (token.TokenType == PEUTETRE_DECIMAL) {
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if (token.TokenText == ".") {
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token.TokenType = OPERATEUR;
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} else {
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token.TokenType = PEUTETRE_DECIMAL;
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}
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}
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token.TokenType = ESPACE_VIDE;
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token.TokenText.erase();
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}
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std::ostream &operator<<(std::ostream &flux, const Token &token) {
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flux << "(Token Flux: " << token.TokenText << ", " << FPL::Tokenizer::sAllTokenTypes[token.TokenType] << ")";
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return flux;
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}
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}

‎src/Essentials/Tokenizer.h‎

Lines changed: 54 additions & 0 deletions
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#pragma once
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#include <iostream>
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#include <string>
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#include <vector>
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#include <ostream>
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#include <cctype>
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#include <algorithm>
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namespace FPL::Tokenizer {
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enum TokenTypes {
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ESPACE_VIDE,
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IDENTIFIANT,
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ENTIER,
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DECIMAL,
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PEUTETRE_DECIMAL,
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CHAINE_LITTERAL,
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OPERATEUR,
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STRING_ESCAPE_SEQUENCE,
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PEUTETRE_COMMENT,
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COMMENT
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};
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// Une copie sera faite au max, constexpr permet de mettre à disponible dès la compilation
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inline constexpr const char *sAllTokenTypes[] = {
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"ESPACE_VIDE",
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"IDENTIFIANT",
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"ENTIER",
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"DECIMAL",
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"PEUTETRE_DECIMAL",
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"CHAINE_LITTERAL",
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"OPERATEUR",
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"STRING_ESCAPE_SEQUENCE",
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"PEUTETRE_COMMENT",
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"COMMENT"
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};
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class Token {
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public:
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enum TokenTypes TokenType = ESPACE_VIDE;
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std::string TokenText;
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size_t TokenLineNumber {0};
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friend std::ostream& operator<<(std::ostream& flux, Token const& token);
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};
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class TokenBuilder {
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public:
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static std::vector<Token> ParseToken(const std::string& contentFile);
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static void ParseEndToken(Token& token, std::vector<Token>& tokens);
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};
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}

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