93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
#include "comdellexer.h"
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#include "comdel_parser.h"
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#include "parser_util.h"
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#include <iostream>
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#include <fstream>
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#include <string>
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#include <QDir>
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std::optional<LibraryNode> load_library_from_file(ParseContext *parseContext,
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const char *name,
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std::ostream &stream) {
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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.empty()) {
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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 parseLibrary
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}
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ComdelParser parser(lexerResult.tokens);
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auto unit = parser.parseLibrary();
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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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std::optional<SchemaNode> load_schema_from_file(ParseContext *parseContext,
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const char *name,
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std::ostream &stream) {
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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.empty()) {
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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 parseLibrary
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}
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ComdelParser parser(lexerResult.tokens);
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auto unit = parser.parseSchema();
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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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if (unit->source) {
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QFileInfo info(name);
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auto filepath = info.absolutePath();
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QDir::setCurrent(filepath);
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QDir dir;
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auto libraryPath = dir.absoluteFilePath(QString::fromStdString(unit->source->asString()));
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unit->library = load_library_from_file(parseContext, libraryPath.toUtf8().data(), stream);
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if (unit->library == std::nullopt) {
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return std::nullopt;
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}
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}
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return *unit;
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}
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