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Duckstation/dep/rapidyaml/include/c4/yml/emit.def.hpp
Stenzek 5c08fa9d00
dep: Add rapidyaml
2024-02-04 16:14:05 +10:00

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#ifndef _C4_YML_EMIT_DEF_HPP_
#define _C4_YML_EMIT_DEF_HPP_
#ifndef _C4_YML_EMIT_HPP_
#include "c4/yml/emit.hpp"
#endif
namespace c4 {
namespace yml {
template<class Writer>
substr Emitter<Writer>::emit_as(EmitType_e type, Tree const& t, size_t id, bool error_on_excess)
{
if(t.empty())
{
_RYML_CB_ASSERT(t.callbacks(), id == NONE);
return {};
}
_RYML_CB_CHECK(t.callbacks(), id < t.capacity());
m_tree = &t;
if(type == EMIT_YAML)
_emit_yaml(id);
else if(type == EMIT_JSON)
_do_visit_json(id);
else
_RYML_CB_ERR(m_tree->callbacks(), "unknown emit type");
return this->Writer::_get(error_on_excess);
}
template<class Writer>
substr Emitter<Writer>::emit_as(EmitType_e type, Tree const& t, bool error_on_excess)
{
if(t.empty())
return {};
return this->emit_as(type, t, t.root_id(), error_on_excess);
}
template<class Writer>
substr Emitter<Writer>::emit_as(EmitType_e type, ConstNodeRef const& n, bool error_on_excess)
{
_RYML_CB_CHECK(n.tree()->callbacks(), n.valid());
return this->emit_as(type, *n.tree(), n.id(), error_on_excess);
}
//-----------------------------------------------------------------------------
template<class Writer>
void Emitter<Writer>::_emit_yaml(size_t id)
{
// save branches in the visitor by doing the initial stream/doc
// logic here, sparing the need to check stream/val/keyval inside
// the visitor functions
auto dispatch = [this](size_t node){
NodeType ty = m_tree->type(node);
if(ty.marked_flow_sl())
_do_visit_flow_sl(node, 0);
else if(ty.marked_flow_ml())
_do_visit_flow_ml(node, 0);
else
{
_do_visit_block(node, 0);
}
};
if(!m_tree->is_root(id))
{
if(m_tree->is_container(id) && !m_tree->type(id).marked_flow())
{
size_t ilevel = 0;
if(m_tree->has_key(id))
{
this->Writer::_do_write(m_tree->key(id));
this->Writer::_do_write(":\n");
++ilevel;
}
_do_visit_block_container(id, ilevel, ilevel);
return;
}
}
auto *btd = m_tree->tag_directives().b;
auto *etd = m_tree->tag_directives().e;
auto write_tag_directives = [&btd, etd, this](size_t next_node){
auto end = btd;
while(end < etd)
{
if(end->next_node_id > next_node)
break;
++end;
}
for( ; btd != end; ++btd)
{
if(next_node != m_tree->first_child(m_tree->parent(next_node)))
this->Writer::_do_write("...\n");
this->Writer::_do_write("%TAG ");
this->Writer::_do_write(btd->handle);
this->Writer::_do_write(' ');
this->Writer::_do_write(btd->prefix);
this->Writer::_do_write('\n');
}
};
if(m_tree->is_stream(id))
{
if(m_tree->first_child(id) != NONE)
write_tag_directives(m_tree->first_child(id));
for(size_t child = m_tree->first_child(id); child != NONE; child = m_tree->next_sibling(child))
{
dispatch(child);
if(m_tree->next_sibling(child) != NONE)
write_tag_directives(m_tree->next_sibling(child));
}
}
else if(m_tree->is_container(id))
{
dispatch(id);
}
else if(m_tree->is_doc(id))
{
_RYML_CB_ASSERT(m_tree->callbacks(), !m_tree->is_container(id)); // checked above
_RYML_CB_ASSERT(m_tree->callbacks(), m_tree->is_val(id)); // so it must be a val
_write_doc(id);
}
else if(m_tree->is_keyval(id))
{
_writek(id, 0);
this->Writer::_do_write(": ");
_writev(id, 0);
if(!m_tree->type(id).marked_flow())
this->Writer::_do_write('\n');
}
else if(m_tree->is_val(id))
{
//this->Writer::_do_write("- ");
_writev(id, 0);
if(!m_tree->type(id).marked_flow())
this->Writer::_do_write('\n');
}
else if(m_tree->type(id) == NOTYPE)
{
;
}
else
{
_RYML_CB_ERR(m_tree->callbacks(), "unknown type");
}
}
template<class Writer>
void Emitter<Writer>::_write_doc(size_t id)
{
RYML_ASSERT(m_tree->is_doc(id));
if(!m_tree->is_root(id))
{
RYML_ASSERT(m_tree->is_stream(m_tree->parent(id)));
this->Writer::_do_write("---");
}
if(!m_tree->has_val(id)) // this is more frequent
{
if(m_tree->has_val_tag(id))
{
if(!m_tree->is_root(id))
this->Writer::_do_write(' ');
_write_tag(m_tree->val_tag(id));
}
if(m_tree->has_val_anchor(id))
{
if(!m_tree->is_root(id))
this->Writer::_do_write(' ');
this->Writer::_do_write('&');
this->Writer::_do_write(m_tree->val_anchor(id));
}
}
else // docval
{
RYML_ASSERT(m_tree->has_val(id));
RYML_ASSERT(!m_tree->has_key(id));
if(!m_tree->is_root(id))
this->Writer::_do_write(' ');
_writev(id, 0);
}
this->Writer::_do_write('\n');
}
template<class Writer>
void Emitter<Writer>::_do_visit_flow_sl(size_t node, size_t ilevel)
{
RYML_ASSERT(!m_tree->is_stream(node));
RYML_ASSERT(m_tree->is_container(node) || m_tree->is_doc(node));
RYML_ASSERT(m_tree->is_root(node) || (m_tree->parent_is_map(node) || m_tree->parent_is_seq(node)));
if(m_tree->is_doc(node))
{
_write_doc(node);
if(!m_tree->has_children(node))
return;
}
else if(m_tree->is_container(node))
{
RYML_ASSERT(m_tree->is_map(node) || m_tree->is_seq(node));
bool spc = false; // write a space
if(m_tree->has_key(node))
{
_writek(node, ilevel);
this->Writer::_do_write(':');
spc = true;
}
if(m_tree->has_val_tag(node))
{
if(spc)
this->Writer::_do_write(' ');
_write_tag(m_tree->val_tag(node));
spc = true;
}
if(m_tree->has_val_anchor(node))
{
if(spc)
this->Writer::_do_write(' ');
this->Writer::_do_write('&');
this->Writer::_do_write(m_tree->val_anchor(node));
spc = true;
}
if(spc)
this->Writer::_do_write(' ');
if(m_tree->is_map(node))
{
this->Writer::_do_write('{');
}
else
{
_RYML_CB_ASSERT(m_tree->callbacks(), m_tree->is_seq(node));
this->Writer::_do_write('[');
}
} // container
for(size_t child = m_tree->first_child(node), count = 0; child != NONE; child = m_tree->next_sibling(child))
{
if(count++)
this->Writer::_do_write(',');
if(m_tree->is_keyval(child))
{
_writek(child, ilevel);
this->Writer::_do_write(": ");
_writev(child, ilevel);
}
else if(m_tree->is_val(child))
{
_writev(child, ilevel);
}
else
{
// with single-line flow, we can never go back to block
_do_visit_flow_sl(child, ilevel + 1);
}
}
if(m_tree->is_map(node))
{
this->Writer::_do_write('}');
}
else if(m_tree->is_seq(node))
{
this->Writer::_do_write(']');
}
}
template<class Writer>
void Emitter<Writer>::_do_visit_flow_ml(size_t id, size_t ilevel, size_t do_indent)
{
C4_UNUSED(id);
C4_UNUSED(ilevel);
C4_UNUSED(do_indent);
RYML_CHECK(false/*not implemented*/);
}
template<class Writer>
void Emitter<Writer>::_do_visit_block_container(size_t node, size_t next_level, size_t do_indent)
{
RepC ind = indent_to(do_indent * next_level);
if(m_tree->is_seq(node))
{
for(size_t child = m_tree->first_child(node); child != NONE; child = m_tree->next_sibling(child))
{
_RYML_CB_ASSERT(m_tree->callbacks(), !m_tree->has_key(child));
if(m_tree->is_val(child))
{
this->Writer::_do_write(ind);
this->Writer::_do_write("- ");
_writev(child, next_level);
this->Writer::_do_write('\n');
}
else
{
_RYML_CB_ASSERT(m_tree->callbacks(), m_tree->is_container(child));
NodeType ty = m_tree->type(child);
if(ty.marked_flow_sl())
{
this->Writer::_do_write(ind);
this->Writer::_do_write("- ");
_do_visit_flow_sl(child, 0u);
this->Writer::_do_write('\n');
}
else if(ty.marked_flow_ml())
{
this->Writer::_do_write(ind);
this->Writer::_do_write("- ");
_do_visit_flow_ml(child, next_level, do_indent);
this->Writer::_do_write('\n');
}
else
{
_do_visit_block(child, next_level, do_indent);
}
}
do_indent = true;
ind = indent_to(do_indent * next_level);
}
}
else // map
{
_RYML_CB_ASSERT(m_tree->callbacks(), m_tree->is_map(node));
for(size_t ich = m_tree->first_child(node); ich != NONE; ich = m_tree->next_sibling(ich))
{
_RYML_CB_ASSERT(m_tree->callbacks(), m_tree->has_key(ich));
if(m_tree->is_keyval(ich))
{
this->Writer::_do_write(ind);
_writek(ich, next_level);
this->Writer::_do_write(": ");
_writev(ich, next_level);
this->Writer::_do_write('\n');
}
else
{
_RYML_CB_ASSERT(m_tree->callbacks(), m_tree->is_container(ich));
NodeType ty = m_tree->type(ich);
if(ty.marked_flow_sl())
{
this->Writer::_do_write(ind);
_do_visit_flow_sl(ich, 0u);
this->Writer::_do_write('\n');
}
else if(ty.marked_flow_ml())
{
this->Writer::_do_write(ind);
_do_visit_flow_ml(ich, 0u);
this->Writer::_do_write('\n');
}
else
{
_do_visit_block(ich, next_level, do_indent);
}
}
do_indent = true;
ind = indent_to(do_indent * next_level);
}
}
}
template<class Writer>
void Emitter<Writer>::_do_visit_block(size_t node, size_t ilevel, size_t do_indent)
{
RYML_ASSERT(!m_tree->is_stream(node));
RYML_ASSERT(m_tree->is_container(node) || m_tree->is_doc(node));
RYML_ASSERT(m_tree->is_root(node) || (m_tree->parent_is_map(node) || m_tree->parent_is_seq(node)));
RepC ind = indent_to(do_indent * ilevel);
if(m_tree->is_doc(node))
{
_write_doc(node);
if(!m_tree->has_children(node))
return;
}
else if(m_tree->is_container(node))
{
RYML_ASSERT(m_tree->is_map(node) || m_tree->is_seq(node));
bool spc = false; // write a space
bool nl = false; // write a newline
if(m_tree->has_key(node))
{
this->Writer::_do_write(ind);
_writek(node, ilevel);
this->Writer::_do_write(':');
spc = true;
}
else if(!m_tree->is_root(node))
{
this->Writer::_do_write(ind);
this->Writer::_do_write('-');
spc = true;
}
if(m_tree->has_val_tag(node))
{
if(spc)
this->Writer::_do_write(' ');
_write_tag(m_tree->val_tag(node));
spc = true;
nl = true;
}
if(m_tree->has_val_anchor(node))
{
if(spc)
this->Writer::_do_write(' ');
this->Writer::_do_write('&');
this->Writer::_do_write(m_tree->val_anchor(node));
spc = true;
nl = true;
}
if(m_tree->has_children(node))
{
if(m_tree->has_key(node))
nl = true;
else
if(!m_tree->is_root(node) && !nl)
spc = true;
}
else
{
if(m_tree->is_seq(node))
this->Writer::_do_write(" []\n");
else if(m_tree->is_map(node))
this->Writer::_do_write(" {}\n");
return;
}
if(spc && !nl)
this->Writer::_do_write(' ');
do_indent = 0;
if(nl)
{
this->Writer::_do_write('\n');
do_indent = 1;
}
} // container
size_t next_level = ilevel + 1;
if(m_tree->is_root(node) || m_tree->is_doc(node))
next_level = ilevel; // do not indent at top level
_do_visit_block_container(node, next_level, do_indent);
}
template<class Writer>
void Emitter<Writer>::_do_visit_json(size_t id)
{
_RYML_CB_CHECK(m_tree->callbacks(), !m_tree->is_stream(id)); // JSON does not have streams
if(m_tree->is_keyval(id))
{
_writek_json(id);
this->Writer::_do_write(": ");
_writev_json(id);
}
else if(m_tree->is_val(id))
{
_writev_json(id);
}
else if(m_tree->is_container(id))
{
if(m_tree->has_key(id))
{
_writek_json(id);
this->Writer::_do_write(": ");
}
if(m_tree->is_seq(id))
this->Writer::_do_write('[');
else if(m_tree->is_map(id))
this->Writer::_do_write('{');
} // container
for(size_t ich = m_tree->first_child(id); ich != NONE; ich = m_tree->next_sibling(ich))
{
if(ich != m_tree->first_child(id))
this->Writer::_do_write(',');
_do_visit_json(ich);
}
if(m_tree->is_seq(id))
this->Writer::_do_write(']');
else if(m_tree->is_map(id))
this->Writer::_do_write('}');
}
template<class Writer>
void Emitter<Writer>::_write(NodeScalar const& C4_RESTRICT sc, NodeType flags, size_t ilevel)
{
if( ! sc.tag.empty())
{
_write_tag(sc.tag);
this->Writer::_do_write(' ');
}
if(flags.has_anchor())
{
RYML_ASSERT(flags.is_ref() != flags.has_anchor());
RYML_ASSERT( ! sc.anchor.empty());
this->Writer::_do_write('&');
this->Writer::_do_write(sc.anchor);
this->Writer::_do_write(' ');
}
else if(flags.is_ref())
{
if(sc.anchor != "<<")
this->Writer::_do_write('*');
this->Writer::_do_write(sc.anchor);
return;
}
// ensure the style flags only have one of KEY or VAL
_RYML_CB_ASSERT(m_tree->callbacks(), ((flags & (_WIP_KEY_STYLE|_WIP_VAL_STYLE)) == 0) || (((flags&_WIP_KEY_STYLE) == 0) != ((flags&_WIP_VAL_STYLE) == 0)));
auto style_marks = flags & (_WIP_KEY_STYLE|_WIP_VAL_STYLE);
if(style_marks & (_WIP_KEY_LITERAL|_WIP_VAL_LITERAL))
{
_write_scalar_literal(sc.scalar, ilevel, flags.has_key());
}
else if(style_marks & (_WIP_KEY_FOLDED|_WIP_VAL_FOLDED))
{
_write_scalar_folded(sc.scalar, ilevel, flags.has_key());
}
else if(style_marks & (_WIP_KEY_SQUO|_WIP_VAL_SQUO))
{
_write_scalar_squo(sc.scalar, ilevel);
}
else if(style_marks & (_WIP_KEY_DQUO|_WIP_VAL_DQUO))
{
_write_scalar_dquo(sc.scalar, ilevel);
}
else if(style_marks & (_WIP_KEY_PLAIN|_WIP_VAL_PLAIN))
{
_write_scalar_plain(sc.scalar, ilevel);
}
else if(!style_marks)
{
size_t first_non_nl = sc.scalar.first_not_of('\n');
bool all_newlines = first_non_nl == npos;
bool has_leading_ws = (!all_newlines) && sc.scalar.sub(first_non_nl).begins_with_any(" \t");
bool do_literal = ((!sc.scalar.empty() && all_newlines) || (has_leading_ws && !sc.scalar.trim(' ').empty()));
if(do_literal)
{
_write_scalar_literal(sc.scalar, ilevel, flags.has_key(), /*explicit_indentation*/has_leading_ws);
}
else
{
for(size_t i = 0; i < sc.scalar.len; ++i)
{
if(sc.scalar.str[i] == '\n')
{
_write_scalar_literal(sc.scalar, ilevel, flags.has_key(), /*explicit_indentation*/has_leading_ws);
goto wrote_special;
}
// todo: check for escaped characters requiring double quotes
}
_write_scalar(sc.scalar, flags.is_quoted());
wrote_special:
;
}
}
else
{
_RYML_CB_ERR(m_tree->callbacks(), "not implemented");
}
}
template<class Writer>
void Emitter<Writer>::_write_json(NodeScalar const& C4_RESTRICT sc, NodeType flags)
{
if(C4_UNLIKELY( ! sc.tag.empty()))
_RYML_CB_ERR(m_tree->callbacks(), "JSON does not have tags");
if(C4_UNLIKELY(flags.has_anchor()))
_RYML_CB_ERR(m_tree->callbacks(), "JSON does not have anchors");
_write_scalar_json(sc.scalar, flags.has_key(), flags.is_quoted());
}
#define _rymlindent_nextline() for(size_t lv = 0; lv < ilevel+1; ++lv) { this->Writer::_do_write(' '); this->Writer::_do_write(' '); }
template<class Writer>
void Emitter<Writer>::_write_scalar_literal(csubstr s, size_t ilevel, bool explicit_key, bool explicit_indentation)
{
if(explicit_key)
this->Writer::_do_write("? ");
csubstr trimmed = s.trimr("\n\r");
size_t numnewlines_at_end = s.len - trimmed.len - s.sub(trimmed.len).count('\r');
//
if(!explicit_indentation)
this->Writer::_do_write('|');
else
this->Writer::_do_write("|2");
//
if(numnewlines_at_end > 1 || (trimmed.len == 0 && s.len > 0)/*only newlines*/)
this->Writer::_do_write("+\n");
else if(numnewlines_at_end == 1)
this->Writer::_do_write('\n');
else
this->Writer::_do_write("-\n");
//
if(trimmed.len)
{
size_t pos = 0; // tracks the last character that was already written
for(size_t i = 0; i < trimmed.len; ++i)
{
if(trimmed[i] != '\n')
continue;
// write everything up to this point
csubstr since_pos = trimmed.range(pos, i+1); // include the newline
_rymlindent_nextline()
this->Writer::_do_write(since_pos);
pos = i+1; // already written
}
if(pos < trimmed.len)
{
_rymlindent_nextline()
this->Writer::_do_write(trimmed.sub(pos));
}
if(numnewlines_at_end)
{
this->Writer::_do_write('\n');
--numnewlines_at_end;
}
}
for(size_t i = 0; i < numnewlines_at_end; ++i)
{
_rymlindent_nextline()
if(i+1 < numnewlines_at_end || explicit_key)
this->Writer::_do_write('\n');
}
if(explicit_key && !numnewlines_at_end)
this->Writer::_do_write('\n');
}
template<class Writer>
void Emitter<Writer>::_write_scalar_folded(csubstr s, size_t ilevel, bool explicit_key)
{
if(explicit_key)
{
this->Writer::_do_write("? ");
}
RYML_ASSERT(s.find("\r") == csubstr::npos);
csubstr trimmed = s.trimr('\n');
size_t numnewlines_at_end = s.len - trimmed.len;
if(numnewlines_at_end == 0)
{
this->Writer::_do_write(">-\n");
}
else if(numnewlines_at_end == 1)
{
this->Writer::_do_write(">\n");
}
else if(numnewlines_at_end > 1)
{
this->Writer::_do_write(">+\n");
}
if(trimmed.len)
{
size_t pos = 0; // tracks the last character that was already written
for(size_t i = 0; i < trimmed.len; ++i)
{
if(trimmed[i] != '\n')
continue;
// write everything up to this point
csubstr since_pos = trimmed.range(pos, i+1); // include the newline
pos = i+1; // because of the newline
_rymlindent_nextline()
this->Writer::_do_write(since_pos);
this->Writer::_do_write('\n'); // write the newline twice
}
if(pos < trimmed.len)
{
_rymlindent_nextline()
this->Writer::_do_write(trimmed.sub(pos));
}
if(numnewlines_at_end)
{
this->Writer::_do_write('\n');
--numnewlines_at_end;
}
}
for(size_t i = 0; i < numnewlines_at_end; ++i)
{
_rymlindent_nextline()
if(i+1 < numnewlines_at_end || explicit_key)
this->Writer::_do_write('\n');
}
if(explicit_key && !numnewlines_at_end)
this->Writer::_do_write('\n');
}
template<class Writer>
void Emitter<Writer>::_write_scalar_squo(csubstr s, size_t ilevel)
{
size_t pos = 0; // tracks the last character that was already written
this->Writer::_do_write('\'');
for(size_t i = 0; i < s.len; ++i)
{
if(s[i] == '\n')
{
csubstr sub = s.range(pos, i+1);
this->Writer::_do_write(sub); // write everything up to (including) this char
this->Writer::_do_write('\n'); // write the character again
if(i + 1 < s.len)
_rymlindent_nextline() // indent the next line
pos = i+1;
}
else if(s[i] == '\'')
{
csubstr sub = s.range(pos, i+1);
this->Writer::_do_write(sub); // write everything up to (including) this char
this->Writer::_do_write('\''); // write the character again
pos = i+1;
}
}
// write missing characters at the end of the string
if(pos < s.len)
this->Writer::_do_write(s.sub(pos));
this->Writer::_do_write('\'');
}
template<class Writer>
void Emitter<Writer>::_write_scalar_dquo(csubstr s, size_t ilevel)
{
size_t pos = 0; // tracks the last character that was already written
this->Writer::_do_write('"');
for(size_t i = 0; i < s.len; ++i)
{
const char curr = s.str[i];
if(curr == '"' || curr == '\\')
{
csubstr sub = s.range(pos, i);
this->Writer::_do_write(sub); // write everything up to (excluding) this char
this->Writer::_do_write('\\'); // write the escape
this->Writer::_do_write(curr); // write the char
pos = i+1;
}
else if(s[i] == '\n')
{
csubstr sub = s.range(pos, i+1);
this->Writer::_do_write(sub); // write everything up to (including) this newline
this->Writer::_do_write('\n'); // write the newline again
if(i + 1 < s.len)
_rymlindent_nextline() // indent the next line
pos = i+1;
if(i+1 < s.len) // escape leading whitespace after the newline
{
const char next = s.str[i+1];
if(next == ' ' || next == '\t')
this->Writer::_do_write('\\');
}
}
else if(curr == ' ' || curr == '\t')
{
// escape trailing whitespace before a newline
size_t next = s.first_not_of(" \t\r", i);
if(next != npos && s[next] == '\n')
{
csubstr sub = s.range(pos, i);
this->Writer::_do_write(sub); // write everything up to (excluding) this char
this->Writer::_do_write('\\'); // escape the whitespace
pos = i;
}
}
else if(C4_UNLIKELY(curr == '\r'))
{
csubstr sub = s.range(pos, i);
this->Writer::_do_write(sub); // write everything up to (excluding) this char
this->Writer::_do_write("\\r"); // write the escaped char
pos = i+1;
}
}
// write missing characters at the end of the string
if(pos < s.len)
{
csubstr sub = s.sub(pos);
this->Writer::_do_write(sub);
}
this->Writer::_do_write('"');
}
template<class Writer>
void Emitter<Writer>::_write_scalar_plain(csubstr s, size_t ilevel)
{
size_t pos = 0; // tracks the last character that was already written
for(size_t i = 0; i < s.len; ++i)
{
const char curr = s.str[i];
if(curr == '\n')
{
csubstr sub = s.range(pos, i+1);
this->Writer::_do_write(sub); // write everything up to (including) this newline
this->Writer::_do_write('\n'); // write the newline again
if(i + 1 < s.len)
_rymlindent_nextline() // indent the next line
pos = i+1;
}
}
// write missing characters at the end of the string
if(pos < s.len)
{
csubstr sub = s.sub(pos);
this->Writer::_do_write(sub);
}
}
#undef _rymlindent_nextline
template<class Writer>
void Emitter<Writer>::_write_scalar(csubstr s, bool was_quoted)
{
// this block of code needed to be moved to before the needs_quotes
// assignment to work around a g++ optimizer bug where (s.str != nullptr)
// was evaluated as true even if s.str was actually a nullptr (!!!)
if(s.len == size_t(0))
{
if(was_quoted || s.str != nullptr)
this->Writer::_do_write("''");
return;
}
const bool needs_quotes = (
was_quoted
||
(
( ! s.is_number())
&&
(
// has leading whitespace
// looks like reference or anchor
// would be treated as a directive
// see https://www.yaml.info/learn/quote.html#noplain
s.begins_with_any(" \n\t\r*&%@`")
||
s.begins_with("<<")
||
// has trailing whitespace
s.ends_with_any(" \n\t\r")
||
// has special chars
(s.first_of("#:-?,\n{}[]'\"") != npos)
)
)
);
if( ! needs_quotes)
{
this->Writer::_do_write(s);
}
else
{
const bool has_dquotes = s.first_of( '"') != npos;
const bool has_squotes = s.first_of('\'') != npos;
if(!has_squotes && has_dquotes)
{
this->Writer::_do_write('\'');
this->Writer::_do_write(s);
this->Writer::_do_write('\'');
}
else if(has_squotes && !has_dquotes)
{
RYML_ASSERT(s.count('\n') == 0);
this->Writer::_do_write('"');
this->Writer::_do_write(s);
this->Writer::_do_write('"');
}
else
{
_write_scalar_squo(s, /*FIXME FIXME FIXME*/0);
}
}
}
template<class Writer>
void Emitter<Writer>::_write_scalar_json(csubstr s, bool as_key, bool use_quotes)
{
if((!use_quotes)
// json keys require quotes
&& (!as_key)
&& (
// do not quote special cases
(s == "true" || s == "false" || s == "null")
|| (
// do not quote numbers
(s.is_number()
&& (
// quote integral numbers if they have a leading 0
// https://github.com/biojppm/rapidyaml/issues/291
(!(s.len > 1 && s.begins_with('0')))
// do not quote reals with leading 0
// https://github.com/biojppm/rapidyaml/issues/313
|| (s.find('.') != csubstr::npos) ))
)
)
)
{
this->Writer::_do_write(s);
}
else
{
size_t pos = 0;
this->Writer::_do_write('"');
for(size_t i = 0; i < s.len; ++i)
{
switch(s.str[i])
{
case '"':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\\"");
pos = i + 1;
break;
case '\n':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\n");
pos = i + 1;
break;
case '\t':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\t");
pos = i + 1;
break;
case '\\':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\\\");
pos = i + 1;
break;
case '\r':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\r");
pos = i + 1;
break;
case '\b':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\b");
pos = i + 1;
break;
case '\f':
this->Writer ::_do_write(s.range(pos, i));
this->Writer ::_do_write("\\f");
pos = i + 1;
break;
}
}
if(pos < s.len)
{
csubstr sub = s.sub(pos);
this->Writer::_do_write(sub);
}
this->Writer::_do_write('"');
}
}
} // namespace yml
} // namespace c4
#endif /* _C4_YML_EMIT_DEF_HPP_ */
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