Tokenize the input with flex
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73
cli/cl.cpp
73
cli/cl.cpp
@ -1,41 +1,10 @@
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#include "elna/cli/cl.hpp"
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#include "elna/backend/target.hpp"
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#include "elna/source/semantic.hpp"
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#include <cstddef>
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#include <fstream>
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#include <iostream>
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namespace elna::cli
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{
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std::string read_source(const char *source)
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{
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constexpr std::size_t buffer_size = 4096;
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std::ifstream input_stream{ source, std::ios::binary | std::ios::in };
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std::string output;
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if (input_stream.fail())
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{
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throw std::ios_base::failure("File does not exist");
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}
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while (true)
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{
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const std::size_t old_size = output.size();
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output.resize(old_size + buffer_size);
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input_stream.read(&output[old_size], buffer_size);
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if (input_stream.eof())
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{
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output.resize(old_size + input_stream.gcount());
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break;
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}
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else if (input_stream.fail())
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{
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throw std::ios_base::failure("Unable to complete reading the source file");
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}
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}
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return output;
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}
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void print_error(const std::unique_ptr<source::error>& compile_error)
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{
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std::cerr << compile_error->path().string() << ":"
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@ -45,36 +14,32 @@ namespace elna::cli
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int compile(const std::filesystem::path& in_file, const std::filesystem::path& out_file)
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{
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std::string source_text;
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try
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{
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source_text = read_source(in_file.c_str());
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source::result<source::lexer> lex_result = source::tokenize(in_file);
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if (lex_result.has_errors())
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{
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print_errors(lex_result.errors().cbegin(), lex_result.errors().cend());
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return 1;
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}
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source::parser parser{ std::move(lex_result.success()) };
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auto ast = parser.parse();
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if (ast == nullptr)
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{
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print_errors(parser.errors().cbegin(), parser.errors().cend());
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return 2;
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}
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auto global_scope = std::make_shared<source::symbol_table>();
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source::name_analysis_visitor(global_scope).visit(ast.get());
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source::type_analysis_visitor().visit(ast.get());
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source::allocator_visitor(global_scope).visit(ast.get());
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riscv::riscv32_elf(ast.get(), global_scope, out_file);
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}
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catch (std::ios_base::failure&)
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{
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return 3;
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}
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size_t tokensCount{ 0 };
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auto lex_result = source::lex(source_text, in_file);
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if (lex_result.has_errors())
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{
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print_errors(lex_result.errors().cbegin(), lex_result.errors().cend());
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return 1;
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}
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source::parser parser{ std::move(lex_result.success()) };
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auto ast = parser.parse();
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if (ast == nullptr)
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{
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print_errors(parser.errors().cbegin(), parser.errors().cend());
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return 2;
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}
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auto global_scope = std::make_shared<source::symbol_table>();
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source::name_analysis_visitor(global_scope).visit(ast.get());
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source::type_analysis_visitor().visit(ast.get());
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source::allocator_visitor(global_scope).visit(ast.get());
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riscv::riscv32_elf(ast.get(), global_scope, out_file);
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return 0;
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}
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}
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