491 lines
16 KiB
C++
491 lines
16 KiB
C++
#ifndef _C4_YML_EMIT_HPP_
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#define _C4_YML_EMIT_HPP_
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#ifndef _C4_YML_WRITER_HPP_
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#include "./writer.hpp"
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#endif
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#ifndef _C4_YML_TREE_HPP_
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#include "./tree.hpp"
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#endif
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#ifndef _C4_YML_NODE_HPP_
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#include "./node.hpp"
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#endif
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#define RYML_DEPRECATE_EMIT \
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RYML_DEPRECATED("use emit_yaml() instead. See https://github.com/biojppm/rapidyaml/issues/120")
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#ifdef emit
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#error "emit is defined, likely from a Qt include. This will cause a compilation error. See https://github.com/biojppm/rapidyaml/issues/120"
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#endif
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#define RYML_DEPRECATE_EMITRS \
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RYML_DEPRECATED("use emitrs_yaml() instead. See https://github.com/biojppm/rapidyaml/issues/120")
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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namespace c4 {
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namespace yml {
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template<class Writer> class Emitter;
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template<class OStream>
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using EmitterOStream = Emitter<WriterOStream<OStream>>;
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using EmitterFile = Emitter<WriterFile>;
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using EmitterBuf = Emitter<WriterBuf>;
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typedef enum {
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EMIT_YAML = 0,
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EMIT_JSON = 1
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} EmitType_e;
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/** mark a tree or node to be emitted as json */
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struct as_json
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{
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Tree const* tree;
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size_t node;
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as_json(Tree const& t) : tree(&t), node(t.empty() ? NONE : t.root_id()) {}
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as_json(Tree const& t, size_t id) : tree(&t), node(id) {}
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as_json(ConstNodeRef const& n) : tree(n.tree()), node(n.id()) {}
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};
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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template<class Writer>
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class Emitter : public Writer
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{
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public:
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using Writer::Writer;
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/** emit!
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*
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* When writing to a buffer, returns a substr of the emitted YAML.
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* If the given buffer has insufficient space, the returned span will
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* be null and its size will be the needed space. No writes are done
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* after the end of the buffer.
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*
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* When writing to a file, the returned substr will be null, but its
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* length will be set to the number of bytes written. */
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substr emit_as(EmitType_e type, Tree const& t, size_t id, bool error_on_excess);
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/** emit starting at the root node */
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substr emit_as(EmitType_e type, Tree const& t, bool error_on_excess=true);
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/** emit the given node */
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substr emit_as(EmitType_e type, ConstNodeRef const& n, bool error_on_excess=true);
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private:
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Tree const* C4_RESTRICT m_tree;
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void _emit_yaml(size_t id);
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void _do_visit_flow_sl(size_t id, size_t ilevel=0);
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void _do_visit_flow_ml(size_t id, size_t ilevel=0, size_t do_indent=1);
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void _do_visit_block(size_t id, size_t ilevel=0, size_t do_indent=1);
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void _do_visit_block_container(size_t id, size_t next_level, size_t do_indent);
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void _do_visit_json(size_t id);
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private:
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void _write(NodeScalar const& C4_RESTRICT sc, NodeType flags, size_t level);
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void _write_json(NodeScalar const& C4_RESTRICT sc, NodeType flags);
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void _write_doc(size_t id);
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void _write_scalar(csubstr s, bool was_quoted);
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void _write_scalar_json(csubstr s, bool as_key, bool was_quoted);
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void _write_scalar_literal(csubstr s, size_t level, bool as_key, bool explicit_indentation=false);
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void _write_scalar_folded(csubstr s, size_t level, bool as_key);
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void _write_scalar_squo(csubstr s, size_t level);
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void _write_scalar_dquo(csubstr s, size_t level);
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void _write_scalar_plain(csubstr s, size_t level);
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void _write_tag(csubstr tag)
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{
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if(!tag.begins_with('!'))
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this->Writer::_do_write('!');
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this->Writer::_do_write(tag);
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}
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enum : type_bits {
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_keysc = (KEY|KEYREF|KEYANCH|KEYQUO|_WIP_KEY_STYLE) | ~(VAL|VALREF|VALANCH|VALQUO|_WIP_VAL_STYLE),
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_valsc = ~(KEY|KEYREF|KEYANCH|KEYQUO|_WIP_KEY_STYLE) | (VAL|VALREF|VALANCH|VALQUO|_WIP_VAL_STYLE),
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_keysc_json = (KEY) | ~(VAL),
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_valsc_json = ~(KEY) | (VAL),
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};
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C4_ALWAYS_INLINE void _writek(size_t id, size_t level) { _write(m_tree->keysc(id), m_tree->_p(id)->m_type.type & ~_valsc, level); }
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C4_ALWAYS_INLINE void _writev(size_t id, size_t level) { _write(m_tree->valsc(id), m_tree->_p(id)->m_type.type & ~_keysc, level); }
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C4_ALWAYS_INLINE void _writek_json(size_t id) { _write_json(m_tree->keysc(id), m_tree->_p(id)->m_type.type & ~(VAL)); }
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C4_ALWAYS_INLINE void _writev_json(size_t id) { _write_json(m_tree->valsc(id), m_tree->_p(id)->m_type.type & ~(KEY)); }
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};
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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//-----------------------------------------------------------------------------
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/** emit YAML to the given file. A null file defaults to stdout.
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* Return the number of bytes written. */
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inline size_t emit_yaml(Tree const& t, size_t id, FILE *f)
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{
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EmitterFile em(f);
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return em.emit_as(EMIT_YAML, t, id, /*error_on_excess*/true).len;
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}
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RYML_DEPRECATE_EMIT inline size_t emit(Tree const& t, size_t id, FILE *f)
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{
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return emit_yaml(t, id, f);
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}
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/** emit JSON to the given file. A null file defaults to stdout.
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* Return the number of bytes written. */
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inline size_t emit_json(Tree const& t, size_t id, FILE *f)
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{
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EmitterFile em(f);
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return em.emit_as(EMIT_JSON, t, id, /*error_on_excess*/true).len;
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}
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/** emit YAML to the given file. A null file defaults to stdout.
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* Return the number of bytes written.
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* @overload */
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inline size_t emit_yaml(Tree const& t, FILE *f=nullptr)
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{
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EmitterFile em(f);
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return em.emit_as(EMIT_YAML, t, /*error_on_excess*/true).len;
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}
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RYML_DEPRECATE_EMIT inline size_t emit(Tree const& t, FILE *f=nullptr)
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{
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return emit_yaml(t, f);
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}
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/** emit JSON to the given file. A null file defaults to stdout.
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* Return the number of bytes written.
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* @overload */
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inline size_t emit_json(Tree const& t, FILE *f=nullptr)
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{
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EmitterFile em(f);
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return em.emit_as(EMIT_JSON, t, /*error_on_excess*/true).len;
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}
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/** emit YAML to the given file. A null file defaults to stdout.
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* Return the number of bytes written.
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* @overload */
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inline size_t emit_yaml(ConstNodeRef const& r, FILE *f=nullptr)
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{
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EmitterFile em(f);
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return em.emit_as(EMIT_YAML, r, /*error_on_excess*/true).len;
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}
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RYML_DEPRECATE_EMIT inline size_t emit(ConstNodeRef const& r, FILE *f=nullptr)
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{
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return emit_yaml(r, f);
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}
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/** emit JSON to the given file. A null file defaults to stdout.
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* Return the number of bytes written.
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* @overload */
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inline size_t emit_json(ConstNodeRef const& r, FILE *f=nullptr)
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{
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EmitterFile em(f);
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return em.emit_as(EMIT_JSON, r, /*error_on_excess*/true).len;
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}
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//-----------------------------------------------------------------------------
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/** emit YAML to an STL-like ostream */
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template<class OStream>
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inline OStream& operator<< (OStream& s, Tree const& t)
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{
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EmitterOStream<OStream> em(s);
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em.emit_as(EMIT_YAML, t);
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return s;
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}
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/** emit YAML to an STL-like ostream
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* @overload */
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template<class OStream>
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inline OStream& operator<< (OStream& s, ConstNodeRef const& n)
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{
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EmitterOStream<OStream> em(s);
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em.emit_as(EMIT_YAML, n);
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return s;
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}
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/** emit json to an STL-like stream */
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template<class OStream>
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inline OStream& operator<< (OStream& s, as_json const& j)
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{
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EmitterOStream<OStream> em(s);
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em.emit_as(EMIT_JSON, *j.tree, j.node, true);
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return s;
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}
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//-----------------------------------------------------------------------------
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/** emit YAML to the given buffer. Return a substr trimmed to the emitted YAML.
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* @param error_on_excess Raise an error if the space in the buffer is insufficient.
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* @overload */
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inline substr emit_yaml(Tree const& t, size_t id, substr buf, bool error_on_excess=true)
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{
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EmitterBuf em(buf);
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return em.emit_as(EMIT_YAML, t, id, error_on_excess);
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}
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RYML_DEPRECATE_EMIT inline substr emit(Tree const& t, size_t id, substr buf, bool error_on_excess=true)
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{
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return emit_yaml(t, id, buf, error_on_excess);
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}
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/** emit JSON to the given buffer. Return a substr trimmed to the emitted JSON.
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* @param error_on_excess Raise an error if the space in the buffer is insufficient.
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* @overload */
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inline substr emit_json(Tree const& t, size_t id, substr buf, bool error_on_excess=true)
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{
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EmitterBuf em(buf);
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return em.emit_as(EMIT_JSON, t, id, error_on_excess);
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}
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/** emit YAML to the given buffer. Return a substr trimmed to the emitted YAML.
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* @param error_on_excess Raise an error if the space in the buffer is insufficient.
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* @overload */
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inline substr emit_yaml(Tree const& t, substr buf, bool error_on_excess=true)
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{
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EmitterBuf em(buf);
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return em.emit_as(EMIT_YAML, t, error_on_excess);
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}
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RYML_DEPRECATE_EMIT inline substr emit(Tree const& t, substr buf, bool error_on_excess=true)
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{
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return emit_yaml(t, buf, error_on_excess);
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}
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/** emit JSON to the given buffer. Return a substr trimmed to the emitted JSON.
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* @param error_on_excess Raise an error if the space in the buffer is insufficient.
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* @overload */
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inline substr emit_json(Tree const& t, substr buf, bool error_on_excess=true)
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{
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EmitterBuf em(buf);
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return em.emit_as(EMIT_JSON, t, error_on_excess);
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}
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/** emit YAML to the given buffer. Return a substr trimmed to the emitted YAML.
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* @param error_on_excess Raise an error if the space in the buffer is insufficient.
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* @overload
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*/
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inline substr emit_yaml(ConstNodeRef const& r, substr buf, bool error_on_excess=true)
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{
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EmitterBuf em(buf);
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return em.emit_as(EMIT_YAML, r, error_on_excess);
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}
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RYML_DEPRECATE_EMIT inline substr emit(ConstNodeRef const& r, substr buf, bool error_on_excess=true)
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{
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return emit_yaml(r, buf, error_on_excess);
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}
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/** emit JSON to the given buffer. Return a substr trimmed to the emitted JSON.
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* @param error_on_excess Raise an error if the space in the buffer is insufficient.
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* @overload
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*/
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inline substr emit_json(ConstNodeRef const& r, substr buf, bool error_on_excess=true)
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{
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EmitterBuf em(buf);
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return em.emit_as(EMIT_JSON, r, error_on_excess);
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}
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//-----------------------------------------------------------------------------
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/** emit+resize: emit YAML to the given std::string/std::vector-like
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* container, resizing it as needed to fit the emitted YAML. */
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template<class CharOwningContainer>
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substr emitrs_yaml(Tree const& t, size_t id, CharOwningContainer * cont)
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{
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substr buf = to_substr(*cont);
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substr ret = emit_yaml(t, id, buf, /*error_on_excess*/false);
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if(ret.str == nullptr && ret.len > 0)
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{
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cont->resize(ret.len);
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buf = to_substr(*cont);
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ret = emit_yaml(t, id, buf, /*error_on_excess*/true);
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}
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return ret;
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}
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template<class CharOwningContainer>
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RYML_DEPRECATE_EMITRS substr emitrs(Tree const& t, size_t id, CharOwningContainer * cont)
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{
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return emitrs_yaml(t, id, cont);
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}
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/** emit+resize: emit JSON to the given std::string/std::vector-like
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* container, resizing it as needed to fit the emitted JSON. */
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template<class CharOwningContainer>
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substr emitrs_json(Tree const& t, size_t id, CharOwningContainer * cont)
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{
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substr buf = to_substr(*cont);
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substr ret = emit_json(t, id, buf, /*error_on_excess*/false);
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if(ret.str == nullptr && ret.len > 0)
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{
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cont->resize(ret.len);
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buf = to_substr(*cont);
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ret = emit_json(t, id, buf, /*error_on_excess*/true);
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}
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return ret;
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}
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/** emit+resize: emit YAML to the given std::string/std::vector-like
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* container, resizing it as needed to fit the emitted YAML. */
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template<class CharOwningContainer>
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CharOwningContainer emitrs_yaml(Tree const& t, size_t id)
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{
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CharOwningContainer c;
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emitrs_yaml(t, id, &c);
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return c;
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}
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template<class CharOwningContainer>
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RYML_DEPRECATE_EMITRS CharOwningContainer emitrs(Tree const& t, size_t id)
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{
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CharOwningContainer c;
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emitrs_yaml(t, id, &c);
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return c;
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}
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/** emit+resize: emit JSON to the given std::string/std::vector-like
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* container, resizing it as needed to fit the emitted JSON. */
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template<class CharOwningContainer>
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CharOwningContainer emitrs_json(Tree const& t, size_t id)
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{
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CharOwningContainer c;
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emitrs_json(t, id, &c);
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return c;
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}
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/** emit+resize: YAML to the given std::string/std::vector-like
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* container, resizing it as needed to fit the emitted YAML. */
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template<class CharOwningContainer>
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substr emitrs_yaml(Tree const& t, CharOwningContainer * cont)
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{
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if(t.empty())
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return {};
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return emitrs_yaml(t, t.root_id(), cont);
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}
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template<class CharOwningContainer>
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RYML_DEPRECATE_EMITRS substr emitrs(Tree const& t, CharOwningContainer * cont)
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{
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return emitrs_yaml(t, cont);
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}
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/** emit+resize: JSON to the given std::string/std::vector-like
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* container, resizing it as needed to fit the emitted JSON. */
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template<class CharOwningContainer>
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substr emitrs_json(Tree const& t, CharOwningContainer * cont)
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{
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if(t.empty())
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return {};
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return emitrs_json(t, t.root_id(), cont);
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}
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/** emit+resize: YAML to the given std::string/std::vector-like container,
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* resizing it as needed to fit the emitted YAML. */
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template<class CharOwningContainer>
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CharOwningContainer emitrs_yaml(Tree const& t)
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{
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CharOwningContainer c;
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if(t.empty())
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return c;
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emitrs_yaml(t, t.root_id(), &c);
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return c;
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}
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template<class CharOwningContainer>
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RYML_DEPRECATE_EMITRS CharOwningContainer emitrs(Tree const& t)
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{
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return emitrs_yaml<CharOwningContainer>(t);
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}
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/** emit+resize: JSON to the given std::string/std::vector-like container,
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* resizing it as needed to fit the emitted JSON. */
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template<class CharOwningContainer>
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CharOwningContainer emitrs_json(Tree const& t)
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{
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CharOwningContainer c;
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if(t.empty())
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return c;
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emitrs_json(t, t.root_id(), &c);
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return c;
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}
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/** emit+resize: YAML to the given std::string/std::vector-like container,
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* resizing it as needed to fit the emitted YAML. */
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template<class CharOwningContainer>
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substr emitrs_yaml(ConstNodeRef const& n, CharOwningContainer * cont)
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{
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_RYML_CB_CHECK(n.tree()->callbacks(), n.valid());
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return emitrs_yaml(*n.tree(), n.id(), cont);
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}
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template<class CharOwningContainer>
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RYML_DEPRECATE_EMITRS substr emitrs(ConstNodeRef const& n, CharOwningContainer * cont)
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{
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return emitrs_yaml(n, cont);
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}
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/** emit+resize: JSON to the given std::string/std::vector-like container,
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* resizing it as needed to fit the emitted JSON. */
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template<class CharOwningContainer>
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substr emitrs_json(ConstNodeRef const& n, CharOwningContainer * cont)
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{
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_RYML_CB_CHECK(n.tree()->callbacks(), n.valid());
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return emitrs_json(*n.tree(), n.id(), cont);
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}
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/** emit+resize: YAML to the given std::string/std::vector-like container,
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* resizing it as needed to fit the emitted YAML. */
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template<class CharOwningContainer>
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CharOwningContainer emitrs_yaml(ConstNodeRef const& n)
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{
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_RYML_CB_CHECK(n.tree()->callbacks(), n.valid());
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CharOwningContainer c;
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emitrs_yaml(*n.tree(), n.id(), &c);
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return c;
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}
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template<class CharOwningContainer>
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RYML_DEPRECATE_EMITRS CharOwningContainer emitrs(ConstNodeRef const& n)
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{
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return emitrs_yaml<CharOwningContainer>(n);
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}
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/** emit+resize: JSON to the given std::string/std::vector-like container,
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* resizing it as needed to fit the emitted JSON. */
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template<class CharOwningContainer>
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CharOwningContainer emitrs_json(ConstNodeRef const& n)
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{
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_RYML_CB_CHECK(n.tree()->callbacks(), n.valid());
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CharOwningContainer c;
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emitrs_json(*n.tree(), n.id(), &c);
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return c;
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}
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} // namespace yml
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} // namespace c4
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#undef RYML_DEPRECATE_EMIT
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#undef RYML_DEPRECATE_EMITRS
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#include "c4/yml/emit.def.hpp"
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#endif /* _C4_YML_EMIT_HPP_ */
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