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// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later
// SPDX-FileCopyrightText: Bradley M. Bell <bradbell@seanet.com>
// SPDX-FileContributor: 2003-22 Bradley M. Bell
// ----------------------------------------------------------------------------
# include <cppad/core/graph/cpp_graph.hpp>
# include <cppad/local/graph/json_lexer.hpp>
# include <cppad/local/define.hpp>
# include <cppad/local/atomic_index.hpp>
# include <cppad/utility/to_string.hpp>
// documentation for this routine is in the file below
# include <cppad/local/graph/json_parser.hpp>
void CppAD::local::graph::json_parser(
const std::string& json ,
cpp_graph& graph_obj )
{ using std::string;
//
//
// match_any_string
const string match_any_string = "";
//
// initilize atomic_name_vec
graph_obj.initialize();
//
// The values in this vector will be set while parsing op_define_vec.
// Note that the values in op_code2enum[0] are not used.
CppAD::vector<graph_op_enum> op_code2enum(1);
//
// -----------------------------------------------------------------------
// json_lexer constructor checks for { at beginning
CppAD::local::graph::json_lexer json_lexer(json);
//
// "function_name" : function_name
json_lexer.check_next_string("function_name");
json_lexer.check_next_char(':');
json_lexer.check_next_string(match_any_string);
std::string function_name = json_lexer.token();
graph_obj.function_name_set(function_name);
json_lexer.set_function_name(function_name);
json_lexer.check_next_char(',');
//
// -----------------------------------------------------------------------
// "op_define_vec" : [ n_define, [
json_lexer.check_next_string("op_define_vec");
json_lexer.check_next_char(':');
json_lexer.check_next_char('[');
//
json_lexer.next_non_neg_int();
size_t n_define = json_lexer.token2size_t();
json_lexer.check_next_char(',');
//
json_lexer.check_next_char('[');
for(size_t i = 0; i < n_define; ++i)
{ // {
json_lexer.check_next_char('{');
//
// "op_code" : op_code,
json_lexer.check_next_string("op_code");
json_lexer.check_next_char(':');
json_lexer.next_non_neg_int();
# ifndef NDEBUG
size_t op_code = json_lexer.token2size_t();
CPPAD_ASSERT_UNKNOWN( op_code == op_code2enum.size() );
# endif
json_lexer.check_next_char(',');
//
// "name" : name
json_lexer.check_next_string("name");
json_lexer.check_next_char(':');
json_lexer.check_next_string(match_any_string);
string name = json_lexer.token();
graph_op_enum op_enum = op_name2enum[name];
//
// op_code2enum for this op_code
op_code2enum.push_back(op_enum);
//
size_t n_arg = op_enum2fixed_n_arg[op_enum];
if( n_arg > 0 )
{ // , "narg" : n_arg
json_lexer.check_next_char(',');
json_lexer.check_next_string("n_arg");
json_lexer.check_next_char(':');
json_lexer.next_non_neg_int();
if( n_arg != json_lexer.token2size_t() )
{ string expected = CppAD::to_string(n_arg);
string found = json_lexer.token();
json_lexer.report_error(expected, found);
}
}
json_lexer.check_next_char('}');
//
// , (if not last entry)
if( i + 1 < n_define )
json_lexer.check_next_char(',');
}
json_lexer.check_next_char(']');
// ],
json_lexer.check_next_char(']');
json_lexer.check_next_char(',');
//
// -----------------------------------------------------------------------
// "n_dynamic_ind" : n_dynamic_ind ,
json_lexer.check_next_string("n_dynamic_ind");
json_lexer.check_next_char(':');
//
json_lexer.next_non_neg_int();
size_t n_dynamic_ind = json_lexer.token2size_t();
graph_obj.n_dynamic_ind_set(n_dynamic_ind);
//
json_lexer.check_next_char(',');
// -----------------------------------------------------------------------
// "n_variable_ind" : n_variable_ind ,
json_lexer.check_next_string("n_variable_ind");
json_lexer.check_next_char(':');
//
json_lexer.next_non_neg_int();
size_t n_variable_ind = json_lexer.token2size_t();
graph_obj.n_variable_ind_set(n_variable_ind);
//
json_lexer.check_next_char(',');
// -----------------------------------------------------------------------
// "constant_vec": [ n_constant, [ first_constant, ..., last_constant ] ],
json_lexer.check_next_string("constant_vec");
json_lexer.check_next_char(':');
json_lexer.check_next_char('[');
//
json_lexer.next_non_neg_int();
size_t n_constant = json_lexer.token2size_t();
//
json_lexer.check_next_char(',');
//
// [ first_constant, ... , last_constant ]
json_lexer.check_next_char('[');
for(size_t i = 0; i < n_constant; ++i)
{ json_lexer.next_float();
graph_obj.constant_vec_push_back( json_lexer.token2double() );
//
if( i + 1 < n_constant )
json_lexer.check_next_char(',');
}
json_lexer.check_next_char(']');
json_lexer.check_next_char(']');
json_lexer.check_next_char(',');
// -----------------------------------------------------------------------
// "op_usage_vec": [ n_usage, [ first_op_usage, ..., last_op_usage ] ],
json_lexer.check_next_string("op_usage_vec");
json_lexer.check_next_char(':');
json_lexer.check_next_char('[');
//
json_lexer.next_non_neg_int();
size_t n_usage = json_lexer.token2size_t();
//
json_lexer.check_next_char(',');
json_lexer.check_next_char('[');
//
// index for strings in current operator
CppAD::vector<size_t> str_index;
for(size_t i = 0; i < n_usage; ++i)
{ str_index.resize(0);
//
// [ op_code,
json_lexer.check_next_char('[');
//
// op_enum
json_lexer.next_non_neg_int();
graph_op_enum op_enum = op_code2enum[ json_lexer.token2size_t() ];
json_lexer.check_next_char(',');
//
size_t call_id = std::numeric_limits<size_t>::max();
size_t n_result = 1;
size_t n_arg = op_enum2fixed_n_arg[op_enum];
//
// check if number of arguments is fixed
bool fixed = n_arg > 0;
if( ! fixed )
{ if( op_enum == discrete_graph_op )
{ // name,
json_lexer.check_next_string(match_any_string);
string name = json_lexer.token();
json_lexer.check_next_char(',');
//
size_t name_index = graph_obj.discrete_name_vec_find(name);
if( name_index == graph_obj.discrete_name_vec_size() )
graph_obj.discrete_name_vec_push_back( name );
str_index.push_back(name_index);
}
else if( op_enum == atom_graph_op || op_enum == atom4_graph_op )
{ // name
json_lexer.check_next_string(match_any_string);
string name = json_lexer.token();
json_lexer.check_next_char(',');
//
size_t name_index = graph_obj.atomic_name_vec_find(name);
if( name_index == graph_obj.atomic_name_vec_size() )
graph_obj.atomic_name_vec_push_back( name );
str_index.push_back(name_index);
}
else if( op_enum == print_graph_op )
{ // before
json_lexer.check_next_string(match_any_string);
string before = json_lexer.token();
json_lexer.check_next_char(',');
//
size_t before_index = graph_obj.print_text_vec_find(before);
if( before_index == graph_obj.print_text_vec_size() )
graph_obj.print_text_vec_push_back(before);
str_index.push_back(before_index);
//
// aftere
json_lexer.check_next_string(match_any_string);
string after = json_lexer.token();
json_lexer.check_next_char(',');
//
size_t after_index = graph_obj.print_text_vec_find(after);
if( after_index == graph_obj.print_text_vec_size() )
graph_obj.print_text_vec_push_back(after);
str_index.push_back(after_index);
}
else CPPAD_ASSERT_UNKNOWN(
op_enum == comp_eq_graph_op ||
op_enum == comp_le_graph_op ||
op_enum == comp_lt_graph_op ||
op_enum == comp_ne_graph_op ||
op_enum == sum_graph_op
);
if( op_enum == atom4_graph_op )
{ json_lexer.next_non_neg_int();
call_id = json_lexer.token2size_t();
json_lexer.check_next_char(',');
}
// n_result,
json_lexer.next_non_neg_int();
n_result = json_lexer.token2size_t();
json_lexer.check_next_char(',');
//
// n_arg, [
json_lexer.next_non_neg_int();
n_arg = json_lexer.token2size_t();
json_lexer.check_next_char(',');
json_lexer.check_next_char('[');
}
//
// atom_graph_op: name_index, n_result, n_arg
// come before first function argument
//
// atom4_graph_op: name_index, call_id, n_result, n_arg
// come before first function argument
if( op_enum == atom_graph_op || op_enum == atom4_graph_op )
{ // name_index, n_result, n_arg come before first_node
size_t name_index = str_index[0];
CPPAD_ASSERT_UNKNOWN(
name_index < graph_obj.atomic_name_vec_size()
);
if( op_enum == atom4_graph_op )
graph_obj.operator_arg_push_back( call_id );
graph_obj.operator_arg_push_back( name_index );
graph_obj.operator_arg_push_back( n_result );
graph_obj.operator_arg_push_back( n_arg );
}
// discrete_op: name_index comes before first argument
if( op_enum == discrete_graph_op )
{ size_t name_index = str_index[0];
graph_obj.operator_arg_push_back( name_index );
}
// print_op: before_index, after_index come before first argument
if( op_enum == print_graph_op )
{ size_t before_index = str_index[0];
size_t after_index = str_index[1];
graph_obj.operator_arg_push_back( before_index );
graph_obj.operator_arg_push_back( after_index );
}
//
// sum_graph_op: n_arg comes before first argument
if( op_enum == sum_graph_op )
graph_obj.operator_arg_push_back( n_arg );
//
// operator_vec
graph_op_enum op_usage;
op_usage = op_enum;
graph_obj.operator_vec_push_back( op_usage );
for(size_t j = 0; j < n_arg; ++j)
{ // next_arg
json_lexer.next_non_neg_int();
size_t argument_node = json_lexer.token2size_t();
graph_obj.operator_arg_push_back( argument_node );
//
// , (if not last entry)
if( j + 1 < n_arg )
json_lexer.check_next_char(',');
}
json_lexer.check_next_char(']');
if( ! fixed )
json_lexer.check_next_char(']');
//
// , (if not last entry)
if( i + 1 < n_usage )
json_lexer.check_next_char(',');
}
json_lexer.check_next_char(']');
json_lexer.check_next_char(']');
json_lexer.check_next_char(',');
// -----------------------------------------------------------------------
// "dependent_vec": [ n_dependent, [first_dependent, ..., last_dependent] ]
json_lexer.check_next_string("dependent_vec");
json_lexer.check_next_char(':');
json_lexer.check_next_char('[');
//
json_lexer.next_non_neg_int();
size_t n_dependent = json_lexer.token2size_t();
json_lexer.check_next_char(',');
//
json_lexer.check_next_char('[');
for(size_t i = 0; i < n_dependent; ++i)
{ json_lexer.next_float();
graph_obj.dependent_vec_push_back( json_lexer.token2size_t() );
//
if( i + 1 < n_dependent )
json_lexer.check_next_char(',');
}
json_lexer.check_next_char(']');
json_lexer.check_next_char(']');
// -----------------------------------------------------------------------
// end of Json object
json_lexer.check_next_char('}');
//
return;
}
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