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Diffstat (limited to 'libxsde/xsde/cxx/parser/validating/parser.cxx')
| -rw-r--r-- | libxsde/xsde/cxx/parser/validating/parser.cxx | 633 |
1 files changed, 633 insertions, 0 deletions
diff --git a/libxsde/xsde/cxx/parser/validating/parser.cxx b/libxsde/xsde/cxx/parser/validating/parser.cxx new file mode 100644 index 0000000..119bf79 --- /dev/null +++ b/libxsde/xsde/cxx/parser/validating/parser.cxx @@ -0,0 +1,633 @@ +// file : xsde/cxx/parser/validating/parser.cxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC +// license : GNU GPL v2 + exceptions; see accompanying LICENSE file + +#include <assert.h> + +#include <xsde/cxx/parser/validating/parser.hxx> + +namespace xsde +{ + namespace cxx + { + namespace parser + { + namespace validating + { + // empty_content + // + +#ifdef XSDE_POLYMORPHIC + bool empty_content:: + _start_element_impl (const ro_string&, + const ro_string&, + const char*) + { + return false; + } +#else + bool empty_content:: + _start_element_impl (const ro_string&, + const ro_string&) + { + return false; + } +#endif + + bool empty_content:: + _end_element_impl (const ro_string&, + const ro_string&) + { + return false; + } + + bool empty_content:: + _attribute_impl (const ro_string&, + const ro_string&, + const ro_string&) + { + return false; + } + + bool empty_content:: + _characters_impl (const ro_string&) + { + return false; + } + + // + // +#ifdef XSDE_POLYMORPHIC + void empty_content:: + _start_element (const ro_string& ns, + const ro_string& name, + const char* type) + { + if (!_start_element_impl (ns, name, type)) + _schema_error (schema_error::unexpected_element); + } +#else + void empty_content:: + _start_element (const ro_string& ns, + const ro_string& name) + { + if (!_start_element_impl (ns, name)) + _schema_error (schema_error::unexpected_element); + } +#endif + + void empty_content:: + _end_element (const ro_string& ns, + const ro_string& name) + { + if (!_end_element_impl (ns, name)) + _schema_error (schema_error::unexpected_element); + } + + static const char + xmlns_namespace_[] = "http://www.w3.org/2000/xmlns/"; + + static const char + xsi_namespace_[] = "http://www.w3.org/2001/XMLSchema-instance"; + + static const char + type_[] = "type"; + + static const char + nil_[] = "nil"; + + static const char + schema_location_[] = "schemaLocation"; + + static const char + no_namespace_schema_location_[] = "noNamespaceSchemaLocation"; + + void empty_content:: + _attribute (const ro_string& ns, + const ro_string& name, + const ro_string& value) + { + // Weed out special attributes: xsi:type, xsi:nil, + // xsi:schemaLocation and noNamespaceSchemaLocation. + // See section 3.2.7 in Structures for details. + // + if (ns == xsi_namespace_ && + (name == schema_location_ || + name == no_namespace_schema_location_ || + name == type_ || + name == nil_)) + return; + + // Also some parsers supply us with namespace-prefix + // mapping attributes. + // + if (ns == xmlns_namespace_) + return; + + if (!_attribute_impl (ns, name, value)) + _schema_error (schema_error::unexpected_attribute); + } + + void empty_content:: + _characters (const ro_string& s) + { +#ifdef XSDE_REUSE_STYLE_TIEIN + if (impl_) + impl_->_characters (s); + else +#endif + if (!_characters_impl (s)) + _schema_error (schema_error::unexpected_characters); + } + + + // simple_content + // + + void simple_content:: + _attribute (const ro_string& ns, + const ro_string& name, + const ro_string& value) + { + // Weed out special attributes: xsi:type, xsi:nil, + // xsi:schemaLocation and noNamespaceSchemaLocation. + // See section 3.2.7 in Structures for details. + // + if (ns == xsi_namespace_ && + (name == schema_location_ || + name == no_namespace_schema_location_ || + name == type_ || + name == nil_)) + return; + + // Also some parsers supply us with namespace-prefix + // mapping attributes. + // + if (ns == xmlns_namespace_) + return; + + if (!_attribute_impl (ns, name, value)) + _schema_error (schema_error::unexpected_attribute); + } + + void simple_content:: + _characters (const ro_string& s) + { +#ifdef XSDE_REUSE_STYLE_TIEIN + if (impl_) + impl_->_characters (s); + else +#endif + if (!_characters_impl (s)) + { + // Mixed content is implemented in the generated code + // by overriding _characters_impl and forwarding to + // _any_characters. + // + + // Scan the string for any non-whitespace characters + // (Structures, section 3.4.4, clause 1.3). + // + ro_string::size_type end = s.size (); + for (ro_string::size_type i = 0; i < end; ++i) + { + char c = s[i]; + + if (c == 0x20 || c == 0x0A || c == 0x0D || c == 0x09) + continue; + + _schema_error (schema_error::unexpected_characters); + break; + } + } + } + + void simple_content:: + _pre_impl (context& c) + { +#ifdef XSDE_REUSE_STYLE_TIEIN + assert (parent_ == 0); + + // Set the parent_ pointers in the tied-in implementations. + // + _set_parent_chain (); +#endif + context_ = &c; + + previous_ = c.current_; + + c.current_.parser_ = this; + c.current_.depth_ = 0; + c.current_.any_ = false; + + _pre (); + + if (!c.error_type ()) + _pre_a_validate (); + } + + void simple_content:: + _post_impl () + { + if (!context_->error_type ()) + _post_a_validate (); + + if (!context_->error_type ()) + _post (); + + context_->current_ = previous_; + context_ = 0; + } + + void simple_content:: + _pre_a_validate () + { + } + + void simple_content:: + _post_a_validate () + { + } + + bool simple_content:: + _attribute_impl (const ro_string& ns, + const ro_string& name, + const ro_string& value) + { + // Returns true on error. + // + if (_attribute_impl_phase_one (ns, name, value)) + return true; + + return _attribute_impl_phase_two (ns, name, value); + } + + bool simple_content:: + _attribute_impl_phase_one (const ro_string&, + const ro_string&, + const ro_string&) + { + return false; + } + + bool simple_content:: + _attribute_impl_phase_two (const ro_string&, + const ro_string&, + const ro_string&) + { + return false; + } + + + // complex_content + // + +#ifdef XSDE_POLYMORPHIC + void complex_content:: + _start_element (const ro_string& ns, + const ro_string& name, + const char* type) + { + if (!_start_element_impl (ns, name, type)) + _schema_error (schema_error::unexpected_element); + } +#else + void complex_content:: + _start_element (const ro_string& ns, + const ro_string& name) + { + if (!_start_element_impl (ns, name)) + _schema_error (schema_error::unexpected_element); + } +#endif + + void complex_content:: + _end_element (const ro_string& ns, + const ro_string& name) + { + if (!_end_element_impl (ns, name)) + _schema_error (schema_error::unexpected_element); + } + + void complex_content:: + _attribute (const ro_string& ns, + const ro_string& name, + const ro_string& value) + { + // Weed out special attributes: xsi:type, xsi:nil, + // xsi:schemaLocation and noNamespaceSchemaLocation. + // See section 3.2.7 in Structures for details. + // + if (ns == xsi_namespace_ && + (name == schema_location_ || + name == no_namespace_schema_location_ || + name == type_ || + name == nil_)) + return; + + // Also some parsers supply us with namespace-prefix + // mapping attributes. + // + if (ns == xmlns_namespace_) + return; + + if (!_attribute_impl (ns, name, value)) + _schema_error (schema_error::unexpected_attribute); + } + + void complex_content:: + _characters (const ro_string& s) + { +#ifdef XSDE_REUSE_STYLE_TIEIN + if (impl_) + impl_->_characters (s); + else +#endif + if (!_characters_impl (s)) + { + // Mixed content is implemented in the generated code + // by overriding _characters_impl and forwarding to + // _any_characters. + // + + // Scan the string for any non-whitespace characters + // (Structures, section 3.4.4, clause 1.3). + // + ro_string::size_type end = s.size (); + for (ro_string::size_type i = 0; i < end; ++i) + { + char c = s[i]; + + if (c == 0x20 || c == 0x0A || c == 0x0D || c == 0x09) + continue; + + _schema_error (schema_error::unexpected_characters); + break; + } + } + } + + void complex_content:: + _pre_impl (context& c) + { +#ifdef XSDE_REUSE_STYLE_TIEIN + assert (parent_ == 0); + + // Set the parent_ pointers in the tied-in implementations. + // + _set_parent_chain (); +#endif + if (depth_++ == 0) + context_ = &c; + +#ifdef XSDE_EXCEPTIONS + parser_stack_.push (c.current_); +#else + if (parser_stack_.push (c.current_)) + { + _sys_error (sys_error::no_memory); + return; + } +#endif + c.current_.parser_ = this; + c.current_.depth_ = 0; + c.current_.any_ = false; + + _pre (); + + if (!c.error_type ()) + _pre_a_validate (); + + if (!c.error_type ()) + _pre_e_validate (); + } + + void complex_content:: + _post_impl () + { + if (!context_->error_type ()) + _post_e_validate (); + + if (!context_->error_type ()) + _post_a_validate (); + + if (!context_->error_type ()) + _post (); + + context_->current_ = parser_stack_.top (); + parser_stack_.pop (); + + if (--depth_ == 0) + context_ = 0; + } + + void complex_content:: + _pre_e_validate () + { + } + + void complex_content:: + _post_e_validate () + { + } + + void complex_content:: + _pre_a_validate () + { + } + + void complex_content:: + _post_a_validate () + { + } + + bool complex_content:: + _attribute_impl (const ro_string& ns, + const ro_string& name, + const ro_string& value) + { + // Returns true on error. + // + if (_attribute_impl_phase_one (ns, name, value)) + return true; + + return _attribute_impl_phase_two (ns, name, value); + } + + bool complex_content:: + _attribute_impl_phase_one (const ro_string&, + const ro_string&, + const ro_string&) + { + return false; + } + + bool complex_content:: + _attribute_impl_phase_two (const ro_string&, + const ro_string&, + const ro_string&) + { + return false; + } + + void complex_content:: + _reset () + { + empty_content::_reset (); + + depth_ = 0; + parser_stack_.clear (); + } + + // list_base + // + + // Find first non-space character. + // + static ro_string::size_type + find_ns (const char* s, + ro_string::size_type size, + ro_string::size_type pos) + { + while (pos < size && + (s[pos] == 0x20 || s[pos] == 0x0A || + s[pos] == 0x0D || s[pos] == 0x09)) + ++pos; + + return pos < size ? pos : ro_string::npos; + } + + // Find first space character. + // + static ro_string::size_type + find_s (const char* s, + ro_string::size_type size, + ro_string::size_type pos) + { + while (pos < size && + s[pos] != 0x20 && s[pos] != 0x0A && + s[pos] != 0x0D && s[pos] != 0x09) + ++pos; + + return pos < size ? pos : ro_string::npos; + } + + // Relevant XML Schema Part 2: Datatypes sections: 4.2.1.2, 4.3.6. + // + + void list_base:: + _pre_impl (context& c) + { + simple_content::_pre_impl (c); + + if (!c.error_type ()) + { +#ifdef XSDE_EXCEPTIONS + buf_.assign ("", 0); +#else + if (buf_.assign ("", 0)) + { + _sys_error (sys_error::no_memory); + return; + } +#endif + } + } + + void list_base:: + _characters (const ro_string& s) + { + typedef ro_string::size_type size_type; + + const char* data = s.data (); + size_type size = s.size (); + + // Handle the previous chunk if we start with a ws. + // + if (!buf_.empty () && + (data[0] == 0x20 || data[0] == 0x0A || + data[0] == 0x0D || data[0] == 0x09)) + { + ro_string tmp (buf_); // Private copy ctor. + _xsde_parse_item (tmp); + buf_.assign ("", 0); // Can't fail. + } + + context& ctx = _context (); + + // Traverse the data while logically collapsing spaces. + // + for (size_type i = find_ns (data, size, 0); i != ro_string::npos;) + { + size_type j = find_s (data, size, i); + + if (j != ro_string::npos) + { + if (buf_.empty ()) + { + ro_string tmp (data + i, j - i); // Private copy ctor. + _xsde_parse_item (tmp); + } + else + { + // Assemble the first item in str from buf_ and s. + // + string str; + str.swap (buf_); + +#ifdef XSDE_EXCEPTIONS + str.append (data + i, j - i); +#else + if (str.append (data + i, j - i)) + { + _sys_error (sys_error::no_memory); + break; + } +#endif + ro_string tmp (str); // Private copy ctor. + _xsde_parse_item (tmp); + } + + if (ctx.error_type ()) + break; + + i = find_ns (data, size, j); + } + else + { + // Last fragment, append it to buf_. + // +#ifdef XSDE_EXCEPTIONS + buf_.append (data + i, size - i); +#else + if (buf_.append (data + i, size - i)) + _sys_error (sys_error::no_memory); +#endif + break; + } + } + } + + void list_base:: + _xsde_parse_item (const ro_string&) + { + } + + void list_base:: + _post_impl () + { + // Handle the last item. + // + if (!buf_.empty ()) + { + ro_string tmp (buf_); // Private copy ctor. + _xsde_parse_item (tmp); + } + + simple_content::_post_impl (); + } + } + } + } +} |