43 lines
1.3 KiB
C++
43 lines
1.3 KiB
C++
#include "comdellexer.h"
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#include "comdelparser.h"
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#include "parserutil.h"
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#include <iostream>
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#include <fstream>
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#include <string>
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std::optional<LibraryNode> loadLibraryFromFile(ParseContext * parseContext,
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const char* name,
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std::ostream& stream)
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{
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std::ifstream in(name, std::ios::in | std::ios::binary);
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if( ! in ) {
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stream << "ERROR: cannot open file '" << name
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<< "' (file does not exist or is unreadable)" << std::endl;
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return std::nullopt;
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}
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std::string source((std::istreambuf_iterator<char>(in)),
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std::istreambuf_iterator<char>());
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ComdelLexer lexer(name, source, parseContext);
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LexerResult lexerResult = lexer.tokenize();
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if (lexerResult.errors.size()) {
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for (auto& error : lexerResult.errors) {
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parseContext->formatError(error, stream, "ERROR: ");
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}
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return std::nullopt; // if lexer has found errors => don't parse
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}
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ComdelParser parser(lexerResult.tokens);
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auto unit = parser.parse();
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if (!unit) {
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for (auto& error : parser.getErrors()) {
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parseContext->formatError(error, stream, "ERROR: ");
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}
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return std::nullopt;
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}
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return *unit;
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}
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