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105 lines
3.0 KiB
105 lines
3.0 KiB
#include "template_type.hpp"
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using namespace mstch;
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template_type::template_type(const std::string& str, const delim_type& delims):
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m_open(delims.first), m_close(delims.second)
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{
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tokenize(str);
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strip_whitespace();
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}
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template_type::template_type(const std::string& str):
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m_open("{{"), m_close("}}")
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{
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tokenize(str);
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strip_whitespace();
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}
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void template_type::process_text(citer begin, citer end) {
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if (begin == end)
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return;
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auto start = begin;
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for (auto it = begin; it != end; ++it)
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if (*it == '\n' || it == end - 1) {
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m_tokens.push_back({{start, it + 1}});
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start = it + 1;
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}
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}
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void template_type::tokenize(const std::string& tmp) {
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citer beg = tmp.begin();
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auto npos = std::string::npos;
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for (std::size_t cur_pos = 0; cur_pos < tmp.size();) {
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auto open_pos = tmp.find(m_open, cur_pos);
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auto close_pos = tmp.find(
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m_close, open_pos == npos ? open_pos : open_pos + 1);
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if (close_pos != npos && open_pos != npos) {
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if (*(beg + open_pos + m_open.size()) == '{' &&
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*(beg + close_pos + m_close.size()) == '}')
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++close_pos;
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process_text(beg + cur_pos, beg + open_pos);
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cur_pos = close_pos + m_close.size();
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m_tokens.push_back({{beg + open_pos, beg + close_pos + m_close.size()},
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m_open.size(), m_close.size()});
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if (cur_pos == tmp.size()) {
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m_tokens.push_back({{""}});
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m_tokens.back().eol(true);
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}
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if (*(beg + open_pos + m_open.size()) == '=' &&
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*(beg + close_pos - 1) == '=')
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{
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auto tok_beg = beg + open_pos + m_open.size() + 1;
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auto tok_end = beg + close_pos - 1;
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auto front_skip = first_not_ws(tok_beg, tok_end);
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auto back_skip = first_not_ws(reverse(tok_end), reverse(tok_beg));
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m_open = {front_skip, beg + tmp.find(' ', front_skip - beg)};
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m_close = {beg + tmp.rfind(' ', back_skip - beg) + 1, back_skip + 1};
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}
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} else {
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process_text(beg + cur_pos, tmp.end());
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cur_pos = close_pos;
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}
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}
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}
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void template_type::strip_whitespace() {
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auto line_begin = m_tokens.begin();
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bool has_tag = false, non_space = false;
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for (auto it = m_tokens.begin(); it != m_tokens.end(); ++it) {
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auto type = (*it).token_type();
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if (type != token::type::text && type != token::type::variable &&
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type != token::type::unescaped_variable)
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has_tag = true;
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else if (!(*it).ws_only())
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non_space = true;
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if ((*it).eol()) {
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if (has_tag && !non_space) {
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store_prefixes(line_begin);
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auto c = line_begin;
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for (bool end = false; !end; (*c).ws_only() ? c = m_tokens.erase(c) : ++c)
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if ((end = (*c).eol()))
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it = c - 1;
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}
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non_space = has_tag = false;
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line_begin = it + 1;
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}
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}
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}
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void template_type::store_prefixes(std::vector<token>::iterator beg) {
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for (auto cur = beg; !(*cur).eol(); ++cur)
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if ((*cur).token_type() == token::type::partial &&
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cur != beg && (*(cur - 1)).ws_only())
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(*cur).partial_prefix((*(cur - 1)).raw());
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}
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