LL parser framework represents parsers directly as EBNF grammars in inlined C++14
Questions tagged [boost-spirit-x3]
281 questions
1
vote
1 answer
Spirit X3, two rules do not compile after being combined into one
I am currently learning how to use x3. As the title states, I have had success creating a grammar with a few simple rules, but upon combining two of these rules into one, the code no longer compiles. Here is the code for the AST portion:
namespace…
CompileYourCake
- 324
- 2
- 12
1
vote
1 answer
Boost spirit x3 parse into struct with skipping member if it empty
I'm trying to figure out the way of parsing the following texts
function() {body ...}
function(args_) {body...}
Should i use the same struct for both variants or it could be done with only one struct
struct function
{
std::string name_;
…
Sergey Konoplev
- 35
- 3
1
vote
1 answer
Are boost spirit V2 Qi grammars thread safe?
While reading the boost spirit V2 docs, this SO-question and this top google spirit doc result for spirit classic/v1 I was not able to find any statement on the thread safety of boost spirit V2 grammars and rules. Some are claiming it's not like in…
Superlokkus
- 4,731
- 1
- 25
- 57
1
vote
1 answer
Compiler errors when parsing into x3::variant
I´m doing more or less my first steps with X3 and already managed to parse a simple struct with 2 members. But I fail to put this struct into a variant.
The (simplified) code looks something like this:
struct Command1
{
CommandType…
Michael G.
- 13
- 2
1
vote
1 answer
Simple Spirit X3 word splitter won't compile, attribute mismatch
I'm trying to use a Spirit X3 parser to process the output from a command-line tool, but have been having issues. I've narrowed them down to a minimal example whose behaviour I don't understand:
#include
#include
#include…
Quentin
- 62,093
- 7
- 131
- 191
1
vote
1 answer
Boost Spirit x3 parsing into a struct with single field
Im keep invistigate boost spirit examples, and collided with the following problem. (i think it was described somwhere like a bug in the code, but i may be wrong)
Simply: Parser didn build when try to pars into a struct with a single filed of type…
Sergey Konoplev
- 35
- 3
1
vote
1 answer
Boost spirit x3 example calculator (calc8, calc9) linker error
I'm very new with boost spirit (and with boost). Its very interesting library.
I use qtcreator + MinGW 5.3.
I simply add every source file from git_hub_calc8 into new project and add some boost library, but i got the following error trying to build…
Sergey Konoplev
- 35
- 3
1
vote
1 answer
boost spirit x3 tuple construction and implicit unused_type
Reading the documentation, I think the below should work correctly, but instead it fails to compile unless I don't pass output to the phrase_parse call, in which case it works correctly, though I can't get the data I want. It seems that nvp_def has…
byteit101
- 3,910
- 2
- 20
- 29
1
vote
1 answer
Spirit.X3 : using push_back_container traits with list parser
I have a class having public ctor and some add() method:
class object
{
object() {}
template
void add(T&& val) { // some adding here}
}
The main question I'm faced is how can I adopt spirit.x3 list parser to use object::add()…
drus
- 495
- 2
- 6
- 13
1
vote
1 answer
boost::spirit::x3 parsing is slower than strsep parsing
I wrote a x3 parser to parse a structured text file, here is the demo code:
int main() {
char buf[10240];
type_t example; // def see below
FILE* fp = fopen("text", "r");
while (fgets(buf, 10240, fp)) // read to the…
avocado
- 2,615
- 3
- 24
- 43
1
vote
2 answers
Boost.Spirit X3 Alternative Operator
I have the following code:
#include
#include
struct printer {
template
void operator()(std::vector &vec) {
std::cout << "vec("…
kalaxy
- 1,608
- 1
- 14
- 14
1
vote
1 answer
Spirit.X3 using string_view and member named 'insert' compiler error
At Stackoverflow there are several Questions & Answers which are related to use {boost, std}::string_view, e.g.:
parsing from std::string into a boost::string_view using boost::spirit::x3 with overloading x3's move_to
namespace boost { namespace…
Olx
- 163
- 8
1
vote
1 answer
parse kleene operator to a set of alternatives, adaptor? with spirit x3
I've learned a lot in the last couple of weeks about this stuff, but not enough. The code below compiles and runs but the code in TEST_ADAPT is incomplete, I'm not sure how to make the connection.
The object is to parse into a plane jane container…
lakeweb
- 1,859
- 2
- 16
- 21
1
vote
1 answer
Combining rules at runtime and returning rules
I am trying to write some complex parser made on top of Spirit-X3, so I need to know some things:
♦ How to combine rules at runtime. (with Nabialek's trick)
♦ Is it ok to return rules like this:
x3::rule SomeFunction(std::string &str)
{
…
NotMe
- 97
- 7
1
vote
1 answer
Dynamically switching symbol tables in x3
Given the following x3 grammar that parses correctly, I want to add validation of parameters, qualifiers, and properties. This would seem to indicate some method of dynamically switching which symbol table is being used within the various rules.…
Brian
- 305
- 1
- 11