fix(frontends/lean/dependencies): dependency generation
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
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1 changed files with 15 additions and 25 deletions
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@ -12,43 +12,33 @@ Author: Leonardo de Moura
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#include "frontends/lean/scanner.h"
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namespace lean {
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/**
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\brief Keep scanning the input until finds an import or an Eof.
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If \c import return true, otherwise return false
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*/
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bool consume_until_import(environment const & env, scanner & s) {
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name import("import");
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scanner::token_kind t;
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while (true) {
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try {
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t = s.scan(env);
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if (t == scanner::token_kind::Eof)
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return false;
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if (t == scanner::token_kind::CommandKeyword && s.get_token_info().value() == import)
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return true;
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} catch (...) {}
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}
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}
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void display_deps(environment const & env, std::ostream & out, char const * fname) {
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name import("import");
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std::ifstream in(fname);
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if (in.bad() || in.fail())
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throw exception(sstream() << "failed to open file '" << fname << "'");
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scanner s(in, fname);
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while (consume_until_import(env, s)) {
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while (true) {
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auto t = s.scan(env);
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if (t != scanner::token_kind::Identifier)
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break;
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bool import_args = false;
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while (true) {
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scanner::token_kind t;
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try {
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t = s.scan(env);
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} catch (exception &) {}
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if (t == scanner::token_kind::Eof) {
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return;
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} else if (t == scanner::token_kind::CommandKeyword && s.get_token_info().value() == import) {
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import_args = true;
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} else if (import_args == true && t == scanner::token_kind::Identifier) {
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std::string m_name = find_file(name_to_file(s.get_name_val()), {".lean", ".olean", ".lua"});
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int last_idx = m_name.find_last_of(".");
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std::string rawname = m_name.substr(0, last_idx);
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std::string ext = m_name.substr(last_idx);
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if (ext == ".lean") {
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if (ext == ".lean")
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m_name = rawname + ".olean";
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}
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display_path(out, m_name);
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out << "\n";
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} else {
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import_args = false;
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}
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}
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}
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