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#ifndef WP_PARSER_C_H_
#define WP_PARSER_C_H_
#include "wp_parser_y.h"
#include <AMReX_GpuQualifiers.H>
#include <AMReX_GpuPrint.H>
#include <AMReX_Extension.H>
#include <AMReX_Math.H>
#include <AMReX_REAL.H>
#include <AMReX_Print.H>
#include <AMReX.H>
#include <cassert>
#include <cmath>
#include <set>
#include <string>
#include <type_traits>
struct wp_parser* wp_c_parser_new (char const* function_body);
#ifdef AMREX_USE_GPU
template <int Depth, std::enable_if_t<(Depth<WARPX_PARSER_DEPTH), int> = 0>
AMREX_GPU_DEVICE AMREX_NO_INLINE
void wp_ast_update_device_ptr (struct wp_node* node, char* droot, char* hroot)
{
switch (node->type)
{
case WP_NUMBER:
break;
case WP_SYMBOL:
{
auto p = (struct wp_symbol*)node;
p->name = droot + (p->name - hroot);
break;
}
case WP_ADD:
case WP_SUB:
case WP_MUL:
case WP_DIV:
{
node->l = (wp_node*)(droot + ((char*)node->l - hroot));
node->r = (wp_node*)(droot + ((char*)node->r - hroot));
wp_ast_update_device_ptr<Depth+1>(node->l, droot, hroot);
wp_ast_update_device_ptr<Depth+1>(node->r, droot, hroot);
break;
}
case WP_NEG:
{
node->l = (wp_node*)(droot + ((char*)node->l - hroot));
wp_ast_update_device_ptr<Depth+1>(node->l, droot, hroot);
break;
}
case WP_F1:
{
auto p = (struct wp_f1*)node;
p->l = (wp_node*)(droot + ((char*)p->l - hroot));
wp_ast_update_device_ptr<Depth+1>(p->l, droot, hroot);
break;
}
case WP_F2:
{
auto p = (struct wp_f2*)node;
p->l = (wp_node*)(droot + ((char*)p->l - hroot));
p->r = (wp_node*)(droot + ((char*)p->r - hroot));
wp_ast_update_device_ptr<Depth+1>(p->l, droot, hroot);
wp_ast_update_device_ptr<Depth+1>(p->r, droot, hroot);
break;
}
case WP_ADD_VP:
case WP_ADD_PP:
case WP_SUB_VP:
case WP_SUB_PP:
case WP_MUL_VP:
case WP_MUL_PP:
case WP_DIV_VP:
case WP_DIV_PP:
case WP_NEG_P:
{
// No need to update node->l and node->r that contain a string for
// variable name because we don't need them for device code.
break;
}
default:
{
#if AMREX_DEVICE_COMPILE
AMREX_DEVICE_PRINTF("wp_ast_update_device_ptr: unknown node type %d\n",
static_cast<int>(node->type));
amrex::Abort();
#endif
}
}
}
template <int Depth, std::enable_if_t<Depth == WARPX_PARSER_DEPTH,int> = 0>
AMREX_GPU_DEVICE AMREX_NO_INLINE
void wp_ast_update_device_ptr (struct wp_node*, char*, char*)
{
#if AMREX_DEVICE_COMPILE
AMREX_DEVICE_PRINTF("wp_ast_update_device_ptr: WARPX_PARSER_DEPTH %d not big enough\n",
WARPX_PARSER_DEPTH);
amrex::Abort();
#endif
}
#endif
template <int Depth, std::enable_if_t<(Depth<WARPX_PARSER_DEPTH), int> = 0>
AMREX_GPU_HOST_DEVICE
#ifdef AMREX_USE_GPU
AMREX_NO_INLINE
#endif
amrex::Real
wp_ast_eval (struct wp_node* node, amrex::Real const* x)
{
amrex::Real result = 0.0;
switch (node->type)
{
case WP_NUMBER:
{
result = ((struct wp_number*)node)->value;
break;
}
case WP_SYMBOL:
{
#if AMREX_DEVICE_COMPILE
int i =((struct wp_symbol*)node)->ip.i;
result = x[i];
#else
result = *(((struct wp_symbol*)node)->ip.p);
#endif
break;
}
case WP_ADD:
{
result = wp_ast_eval<Depth+1>(node->l,x) + wp_ast_eval<Depth+1>(node->r,x);
break;
}
case WP_SUB:
{
result = wp_ast_eval<Depth+1>(node->l,x) - wp_ast_eval<Depth+1>(node->r,x);
break;
}
case WP_MUL:
{
result = wp_ast_eval<Depth+1>(node->l,x) * wp_ast_eval<Depth+1>(node->r,x);
break;
}
case WP_DIV:
{
result = wp_ast_eval<Depth+1>(node->l,x) / wp_ast_eval<Depth+1>(node->r,x);
break;
}
case WP_NEG:
{
result = -wp_ast_eval<Depth+1>(node->l,x);
break;
}
case WP_F1:
{
result = wp_call_f1(((struct wp_f1*)node)->ftype,
wp_ast_eval<Depth+1>(((struct wp_f1*)node)->l,x));
break;
}
case WP_F2:
{
result = wp_call_f2(((struct wp_f2*)node)->ftype,
wp_ast_eval<Depth+1>(((struct wp_f2*)node)->l,x),
wp_ast_eval<Depth+1>(((struct wp_f2*)node)->r,x));
break;
}
case WP_ADD_VP:
{
#if AMREX_DEVICE_COMPILE
int i = node->rip.i;
result = node->lvp.v + x[i];
#else
result = node->lvp.v + *(node->rip.p);
#endif
break;
}
case WP_ADD_PP:
{
#if AMREX_DEVICE_COMPILE
int i = node->lvp.ip.i;
int j = node->rip.i;
result = x[i] + x[j];
#else
result = *(node->lvp.ip.p) + *(node->rip.p);
#endif
break;
}
case WP_SUB_VP:
{
#if AMREX_DEVICE_COMPILE
int i = node->rip.i;
result = node->lvp.v - x[i];
#else
result = node->lvp.v - *(node->rip.p);
#endif
break;
}
case WP_SUB_PP:
{
#if AMREX_DEVICE_COMPILE
int i = node->lvp.ip.i;
int j = node->rip.i;
result = x[i] - x[j];
#else
result = *(node->lvp.ip.p) - *(node->rip.p);
#endif
break;
}
case WP_MUL_VP:
{
#if AMREX_DEVICE_COMPILE
int i = node->rip.i;
result = node->lvp.v * x[i];
#else
result = node->lvp.v * *(node->rip.p);
#endif
break;
}
case WP_MUL_PP:
{
#if AMREX_DEVICE_COMPILE
int i = node->lvp.ip.i;
int j = node->rip.i;
result = x[i] * x[j];
#else
result = *(node->lvp.ip.p) * *(node->rip.p);
#endif
break;
}
case WP_DIV_VP:
{
#if AMREX_DEVICE_COMPILE
int i = node->rip.i;
result = node->lvp.v / x[i];
#else
result = node->lvp.v / *(node->rip.p);
#endif
break;
}
case WP_DIV_PP:
{
#if AMREX_DEVICE_COMPILE
int i = node->lvp.ip.i;
int j = node->rip.i;
result = x[i] / x[j];
#else
result = *(node->lvp.ip.p) / *(node->rip.p);
#endif
break;
}
case WP_NEG_P:
{
#if AMREX_DEVICE_COMPILE
int i = node->rip.i;
result = -x[i];
#else
result = -*(node->lvp.ip.p);
#endif
break;
}
default:
{
#if AMREX_DEVICE_COMPILE
AMREX_DEVICE_PRINTF("wp_ast_eval: unknown node type %d\n", node->type);
#else
amrex::AllPrint() << "wp_ast_eval: unknown node type " << node->type << "\n";
#endif
}
}
// check for NaN & Infs, e.g. if individual terms invalidate the whole
// expression in piecewise constructed functions, etc.
if
#if __cplusplus >= 201703L
constexpr
#endif
(Depth == 0)
{
if (!amrex::Math::isfinite(result))
{
constexpr char const * const err_msg =
"wp_ast_eval: function parser encountered an invalid result value (NaN or Inf)!";
#if AMREX_DEVICE_COMPILE
AMREX_DEVICE_PRINTF("%s\n", err_msg);
#else
amrex::AllPrint() << err_msg << "\n";
#endif
amrex::Abort(err_msg);
}
}
return result;
}
template <int Depth, std::enable_if_t<Depth == WARPX_PARSER_DEPTH,int> = 0>
AMREX_GPU_HOST_DEVICE
#ifdef AMREX_USE_GPU
AMREX_NO_INLINE
#endif
amrex::Real
wp_ast_eval (struct wp_node* node, amrex::Real const* x)
{
#if AMREX_DEVICE_COMPILE
AMREX_DEVICE_PRINTF("wp_ast_eval: WARPX_PARSER_DEPTH %d not big enough\n",
WARPX_PARSER_DEPTH);
#else
amrex::AllPrint() << "wp_ast_eval: WARPX_PARSER_DEPTH" << WARPX_PARSER_DEPTH
<< "not big enough\n";
#endif
amrex::ignore_unused(node, x);
return 0.;
}
inline
void
wp_ast_get_symbols (struct wp_node* node, std::set<std::string>& symbols)
{
switch (node->type)
{
case WP_NUMBER:
break;
case WP_SYMBOL:
symbols.emplace(((struct wp_symbol*)node)->name);
break;
case WP_ADD:
case WP_SUB:
case WP_MUL:
case WP_DIV:
case WP_ADD_PP:
case WP_SUB_PP:
case WP_MUL_PP:
case WP_DIV_PP:
wp_ast_get_symbols(node->l, symbols);
wp_ast_get_symbols(node->r, symbols);
break;
case WP_NEG:
case WP_NEG_P:
wp_ast_get_symbols(node->l, symbols);
break;
case WP_F1:
wp_ast_get_symbols(((struct wp_f1*)node)->l, symbols);
break;
case WP_F2:
wp_ast_get_symbols(((struct wp_f2*)node)->l, symbols);
wp_ast_get_symbols(((struct wp_f2*)node)->r, symbols);
break;
case WP_ADD_VP:
case WP_SUB_VP:
case WP_MUL_VP:
case WP_DIV_VP:
wp_ast_get_symbols(node->r, symbols);
break;
default:
amrex::AllPrint() << "wp_ast_get_symbols: unknown node type " << node->type << "\n";
}
}
#endif
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