donner::svg::parser::ListParser Class Reference

Parses a list of values conforming to the SVG comma-or-space list syntax. More...

#include "donner/svg/parser/ListParser.h"

Static Public Member Functions
template<ListParserItemCallback Fn>
static std::optional< ParseError >	Parse (std::string_view value, Fn fn)
	Parses the SVG comma-or-space separated list from the given std::string_view.

Detailed Description

Parses a list of values conforming to the SVG comma-or-space list syntax.

This parser adheres to the rules for SVG lists, which allow items to be separated by commas, whitespace, or a mix of both. It calls a provided function for each individual item found in the list.

Grammar allows:

• item1, item2 item3 , item4
• Whitespace around commas is ignored.
• Multiple spaces between items are ignored.

Invalid syntax (returns false):

• Empty items (e.g., item1,,item2)
• Trailing commas (e.g., item1, item2,)
• Leading commas (e.g., , item1)

Example Usage:

std::vector<std::string_view> items;
bool success = ListParser::Parse("item1 item2, item3", [&](std::string_view item) {
  items.push_back(item);
});
// success will be true, items will contain {"item1", "item2", "item3"}

Member Function Documentation

Parse()

template<ListParserItemCallback Fn>

static std::optional< ParseError > donner::svg::parser::ListParser::Parse ( std::string_view value, Fn fn )

inlinestatic

Parses the SVG comma-or-space separated list from the given std::string_view.

Template Parameters

Fn	Type of the function to call for each list item, with signature void(std::string_view).

Parameters

value	The string_view containing the list to parse.
fn	The function to call for each parsed item.

Returns

std::nullopt on success, or a ParseError containing the reason and position of the error on failure.

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The documentation for this class was generated from the following file:

• donner/svg/parser/ListParser.h