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Merge branch 'constexpr' into c++17

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This commit is contained in:
Jason Turner 2017-09-20 17:05:31 -06:00
commit 8e590387f1
2 changed files with 27 additions and 51 deletions
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72
include/chaiscript/language/chaiscript_parser.hpp
View File

@ -281,36 +281,12 @@ namespace chaiscript
return operators; return operators;
} }
constexpr static utility::Static_String multiline_comment_end() noexcept constexpr static utility::Static_String m_multiline_comment_end{"*/"};
{ constexpr static utility::Static_String m_multiline_comment_begin{"/*"};
constexpr utility::Static_String s("*/"); constexpr static utility::Static_String m_singleline_comment{"//"};
return s; constexpr static utility::Static_String m_annotation{"#"};
} constexpr static utility::Static_String m_cr_lf{"\r\n"};
constexpr static auto m_operators = create_operators();
constexpr static utility::Static_String multiline_comment_begin() noexcept
{
constexpr utility::Static_String s("/*");
return s;
}
constexpr static utility::Static_String singleline_comment() noexcept
{
constexpr utility::Static_String s("//");
return s;
}
constexpr static utility::Static_String annotation() noexcept
{
constexpr utility::Static_String s("#");
return s;
}
constexpr static utility::Static_String cr_lf() noexcept
{
constexpr utility::Static_String s("\r\n");
return s;
}
std::shared_ptr<std::string> m_filename; std::shared_ptr<std::string> m_filename;
std::vector<eval::AST_Node_Impl_Ptr<Tracer>> m_match_stack; std::vector<eval::AST_Node_Impl_Ptr<Tracer>> m_match_stack;
@ -453,10 +429,12 @@ namespace chaiscript
ChaiScript_Parser(ChaiScript_Parser &&) = default; ChaiScript_Parser(ChaiScript_Parser &&) = default;
ChaiScript_Parser &operator=(ChaiScript_Parser &&) = delete; ChaiScript_Parser &operator=(ChaiScript_Parser &&) = delete;
constexpr static auto m_alphabet = build_alphabet();
constexpr static Operator_Matches m_operator_matches{};
/// test a char in an m_alphabet /// test a char in an m_alphabet
constexpr bool char_in_alphabet(char c, detail::Alphabet a) const noexcept { constexpr bool char_in_alphabet(char c, detail::Alphabet a) const noexcept {
constexpr auto alphabet = build_alphabet(); return m_alphabet[a][static_cast<uint8_t>(c)];
return alphabet[a][static_cast<uint8_t>(c)];
} }
/// Prints the parsed ast_nodes as a tree /// Prints the parsed ast_nodes as a tree
@ -532,18 +510,18 @@ namespace chaiscript
/// Skips any multi-line or single-line comment /// Skips any multi-line or single-line comment
bool SkipComment() { bool SkipComment() {
if (Symbol_(multiline_comment_begin())) { if (Symbol_(m_multiline_comment_begin)) {
while (m_position.has_more()) { while (m_position.has_more()) {
if (Symbol_(multiline_comment_end())) { if (Symbol_(m_multiline_comment_end)) {
break; break;
} else if (!Eol_()) { } else if (!Eol_()) {
++m_position; ++m_position;
} }
} }
return true; return true;
} else if (Symbol_(singleline_comment())) { } else if (Symbol_(m_singleline_comment)) {
while (m_position.has_more()) { while (m_position.has_more()) {
if (Symbol_(cr_lf())) { if (Symbol_(m_cr_lf)) {
m_position -= 2; m_position -= 2;
break; break;
} else if (Char_('\n')) { } else if (Char_('\n')) {
@ -554,9 +532,9 @@ namespace chaiscript
} }
} }
return true; return true;
} else if (Symbol_(annotation())) { } else if (Symbol_(m_annotation)) {
while (m_position.has_more()) { while (m_position.has_more()) {
if (Symbol_(cr_lf())) { if (Symbol_(m_cr_lf)) {
m_position -= 2; m_position -= 2;
break; break;
} else if (Char_('\n')) { } else if (Char_('\n')) {
@ -1448,8 +1426,7 @@ namespace chaiscript
} }
bool is_operator(const std::string_view &t_s) const noexcept { bool is_operator(const std::string_view &t_s) const noexcept {
constexpr Operator_Matches operator_matches; return m_operator_matches.is_match(t_s);
return operator_matches.is_match(t_s);
} }
/// Reads (and potentially captures) a symbol group from input if it matches the parameter /// Reads (and potentially captures) a symbol group from input if it matches the parameter
@ -1475,7 +1452,7 @@ namespace chaiscript
bool Eol_(const bool t_eos = false) { bool Eol_(const bool t_eos = false) {
bool retval = false; bool retval = false;
if (m_position.has_more() && (Symbol_(cr_lf()) || Char_('\n'))) { if (m_position.has_more() && (Symbol_(m_cr_lf) || Char_('\n'))) {
retval = true; retval = true;
//++m_position.line; //++m_position.line;
m_position.col = 1; m_position.col = 1;
@ -2347,14 +2324,12 @@ namespace chaiscript
SS{"~"} SS{"~"}
}}; }};
constexpr auto operators = create_operators();
for (const auto &oper : prefix_opers) for (const auto &oper : prefix_opers)
{ {
const bool is_char = oper.size() == 1; const bool is_char = oper.size() == 1;
if ((is_char && Char(oper.c_str()[0])) || (!is_char && Symbol(oper))) if ((is_char && Char(oper.c_str()[0])) || (!is_char && Symbol(oper)))
{ {
if (!Operator(operators.size()-1)) { if (!Operator(m_operators.size()-1)) {
throw exception::eval_error("Incomplete prefix '" + std::string(oper.c_str()) + "' expression", File_Position(m_position.line, m_position.col), *m_filename); throw exception::eval_error("Incomplete prefix '" + std::string(oper.c_str()) + "' expression", File_Position(m_position.line, m_position.col), *m_filename);
} }
@ -2372,8 +2347,7 @@ namespace chaiscript
} }
bool Operator_Helper(const size_t t_precedence, std::string &oper) { bool Operator_Helper(const size_t t_precedence, std::string &oper) {
constexpr Operator_Matches operator_matches; return m_operator_matches.any_of(t_precedence,
return operator_matches.any_of(t_precedence,
[&oper, this](const auto &elem){ [&oper, this](const auto &elem){
if (Symbol(elem)) { if (Symbol(elem)) {
oper = elem.c_str(); oper = elem.c_str();
@ -2389,9 +2363,7 @@ namespace chaiscript
bool retval = false; bool retval = false;
const auto prev_stack_top = m_match_stack.size(); const auto prev_stack_top = m_match_stack.size();
constexpr auto operators = create_operators(); if (m_operators[t_precedence] != Operator_Precidence::Prefix) {
if (operators[t_precedence] != Operator_Precidence::Prefix) {
if (Operator(t_precedence+1)) { if (Operator(t_precedence+1)) {
retval = true; retval = true;
std::string oper; std::string oper;
@ -2402,7 +2374,7 @@ namespace chaiscript
File_Position(m_position.line, m_position.col), *m_filename); File_Position(m_position.line, m_position.col), *m_filename);
} }
switch (operators[t_precedence]) { switch (m_operators[t_precedence]) {
case(Operator_Precidence::Ternary_Cond) : case(Operator_Precidence::Ternary_Cond) :
if (Symbol(":")) { if (Symbol(":")) {
if (!Operator(t_precedence+1)) { if (!Operator(t_precedence+1)) {

4
include/chaiscript/utility/static_string.hpp
View File

@ -52,6 +52,10 @@ namespace chaiscript
return true; return true;
} }
bool operator==(const std::string &t_str) const noexcept {
return std::equal(begin(), end(), std::cbegin(t_str), std::cend(t_str));
}
const size_t m_size; const size_t m_size;
const char *data = nullptr; const char *data = nullptr;
}; };