Added foundation for Lexer

This commit is contained in:
Pasha Bibko
2025-07-20 13:49:10 +01:00
parent 7768ba4522
commit 8f75e52a07
6 changed files with 47 additions and 4 deletions

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@@ -2,7 +2,7 @@
// Standard libraries //
#include <iostream>
#include <vector>
// LXC util files //

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@@ -9,7 +9,9 @@ namespace LXC::Util
template<typename ErrorType> struct FunctionFail
{
explicit FunctionFail(ErrorType _err)
: error(_err) {}
: error(_err)
{
}
ErrorType error;
};

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@@ -7,7 +7,7 @@ int main(int argc, char** argv)
using namespace LXC;
// Reads the given file to a string //
Util::ReturnVal fileContents = Util::ReadFile("example/example.lx");
Util::ReturnVal fileContents = Util::ReadFile("example/example.jk.lx");
if (fileContents.Failed())
{
// Stores the error for easier access //
@@ -26,5 +26,13 @@ int main(int argc, char** argv)
return -1;
}
// Turns the file contents into a vector of tokens //
Util::ReturnVal tokens = Lexer::TokenizeFile(fileContents);
if (tokens.Failed())
{
// Returns with default error code //
return -1;
}
return 0;
}

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@@ -6,12 +6,24 @@ namespace LXC::Lexer
{
struct LexerContext
{
// Constructor to set the information of the context //
LexerContext(const std::string& _source);
// Trackers for the Lexer itself //
std::string source;
const std::string& source;
size_t index;
LexerOutput out;
const size_t len;
// Trackers for where the Lexer is within the user version of source //
unsigned short column;
unsigned short line;
};
struct LexerError
{};
// Turns a file into a vector of tokens //
Util::ReturnVal<LexerOutput, LexerError> TokenizeFile(const std::string& fileContents);
}

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@@ -112,4 +112,7 @@ namespace LXC::Lexer
// The data of the token //
const char* contents;
};
// Typedef for the output type of how the Lexer outputs //
typedef std::vector<Token> LexerOutput;
}

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@@ -5,4 +5,22 @@
namespace LXC::Lexer
{
LexerContext::LexerContext(const std::string& _source) :
source(_source), index(0), out{}, len(_source.length()), column(0), line(0)
{}
Util::ReturnVal<LexerOutput, LexerError> TokenizeFile(const std::string& fileContents)
{
// Creates the context for the lexer //
LexerContext context(fileContents);
while (context.index > context.len)
{
// Iterates to the next index //
context.column++;
context.index++;
}
return context.out;
}
}