daScript/src/simulate/simulate.cpp at split-heap · Bais/daScript · GitHub

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#include "daScript/misc/platform.h"

#include "daScript/simulate/simulate.h"

#include "daScript/simulate/runtime_string.h"

// this is here for the default implementation of to_out and to_err

#include <iostream>

namespace das

{

bool SimNode::evalBool ( Context & context ) {

assert(0 && "we should never be here");

return cast<bool>::to(eval(context));

}

float SimNode::evalFloat ( Context & context ) {

assert(0 && "we should never be here");

return cast<float>::to(eval(context));

}

int32_t SimNode::evalInt ( Context & context ) {

assert(0 && "we should never be here");

return cast<int32_t>::to(eval(context));

}

uint32_t SimNode::evalUInt ( Context & context ) {

assert(0 && "we should never be here");

return cast<uint32_t>::to(eval(context));

}

int64_t SimNode::evalInt64 ( Context & context ) {

assert(0 && "we should never be here");

return cast<int64_t>::to(eval(context));

}

uint64_t SimNode::evalUInt64 ( Context & context ) {

assert(0 && "we should never be here");

return cast<uint64_t>::to(eval(context));

}

char * SimNode::evalPtr ( Context & context ) {

assert(0 && "we should never be here");

return cast<char *>::to(eval(context));

}

vec4f SimNode_Swizzle::eval ( Context & context ) {

union {

vec4f res;

float val[4];

} R, S;

S.res = value->eval(context);

DAS_EXCEPTION_POINT;

R.val[0] = S.val[fields[0]];

R.val[1] = S.val[fields[1]];

R.val[2] = S.val[fields[2]];

R.val[3] = S.val[fields[3]];

return R.res;

}

// SimNode_MakeBlock

vec4f SimNode_MakeBlock::eval ( Context & context ) {

Block block;

block.stackOffset = context.stack.spi();

block.argumentsOffset = argStackTop ? (context.stack.spi() + argStackTop) : 0;

block.body = subexpr;

return cast<Block>::from(block);

}

// SimNode_Call

vec4f SimNode_Call::eval ( Context & context ) {

vec4f * argValues = (vec4f *)(alloca(nArguments * sizeof(vec4f)));

evalArgs(context, argValues);

DAS_EXCEPTION_POINT;

return context.call(fnIndex, argValues, nullptr, debug.line);

}

vec4f SimNode_CallAndCopyOrMove::eval ( Context & context ) {

vec4f * argValues = (vec4f *)(alloca(nArguments * sizeof(vec4f)));

evalArgs(context, argValues);

DAS_EXCEPTION_POINT;

auto cmres = context.stack.sp() + stackTop;

return context.call(fnIndex, argValues, cmres, debug.line);

}

// SimNode_Invoke

vec4f SimNode_Invoke::eval ( Context & context ) {

vec4f * argValues = (vec4f *)(alloca(nArguments * sizeof(vec4f)));

evalArgs(context, argValues);

DAS_EXCEPTION_POINT;

Block block = cast<Block>::to(argValues[0]);

if ( nArguments>1 ) {

return context.invoke(block, argValues + 1, nullptr);

} else {

return context.invoke(block, nullptr, nullptr);

}

vec4f SimNode_InvokeAndCopyOrMove::eval ( Context & context ) {

vec4f * argValues = (vec4f *)(alloca(nArguments * sizeof(vec4f)));

evalArgs(context, argValues);

DAS_EXCEPTION_POINT;

Block block = cast<Block>::to(argValues[0]);

auto cmres = context.stack.sp() + stackTop;

if ( nArguments>1 ) {

return context.invoke(block, argValues + 1, cmres);

} else {

return context.invoke(block, nullptr, cmres);

}

// SimNode_Debug

vec4f SimNode_Debug::eval ( Context & context ) {

vec4f res = subexpr->eval(context);

DAS_EXCEPTION_POINT;

stringstream ssw;

if ( message ) ssw << message << " ";

ssw << debug_type(typeInfo) << " = " << debug_value(res, typeInfo, PrintFlags::debugger)

<< " at " << debug.describe() << "\n";

context.to_out(ssw.str().c_str());

return res;

}

// SimNode_Assert

vec4f SimNode_Assert::eval ( Context & context ) {

if ( !subexpr->evalBool(context) ) {

DAS_EXCEPTION_POINT;

string error_message = "assert failed";

if ( message )

error_message = error_message + ", " + message;

string error = reportError(context.debugInput, debug.line, debug.column, error_message );

error = context.getStackWalk(false) + error;

context.to_err(error.c_str());

context.throw_error("assert failed");

}

return v_zero();

}

// SimNode_TryCatch

vec4f SimNode_TryCatch::eval ( Context & context ) {

#if DAS_ENABLE_EXCEPTIONS

try_block->eval(context);

if ( context.stopFlags & EvalFlags::stopForThrow ) {

context.stopFlags &= ~(EvalFlags::stopForThrow | EvalFlags::stopForReturn | EvalFlags::stopForBreak);

catch_block->eval(context);

}

#else

try {

try_block->eval(context);

} catch ( const runtime_error & ) {

context.stopFlags &= ~(EvalFlags::stopForThrow | EvalFlags::stopForReturn | EvalFlags::stopForBreak);

catch_block->eval(context);

}

#endif

return v_zero();

}

// SimNode_New

vec4f SimNode_New::eval ( Context & context ) {

if ( void * ptr = context.heap.allocate(bytes) ) {

memset ( ptr, 0, bytes );

return cast<void *>::from(ptr);

} else {

context.throw_error("out of memory");

return v_zero();

}

// SimNode_CopyRefValue

vec4f SimNode_CopyRefValue::eval ( Context & context ) {

auto pl = l->evalPtr(context);

DAS_EXCEPTION_POINT;

auto pr = r->evalPtr(context);

DAS_EXCEPTION_POINT;

memcpy ( pl, pr, size );

return v_zero();

}

// SimNode_MoveRefValue

vec4f SimNode_MoveRefValue::eval ( Context & context ) {

auto pl = l->evalPtr(context);

DAS_EXCEPTION_POINT;

auto pr = r->evalPtr(context);

DAS_EXCEPTION_POINT;

memcpy ( pl, pr, size );

memset ( pr, 0, size );

return v_zero();

}

// SimNode_Block

vec4f SimNode_Block::eval ( Context & context ) {

for ( uint32_t i = 0; i!=total && !context.stopFlags; ++i )

list[i]->eval(context);

return v_zero();

}

vec4f SimNode_ClosureBlock::eval ( Context & context ) {

for ( uint32_t i = 0; i!=total && !context.stopFlags; ++i )

list[i]->eval(context);

if ( context.stopFlags & EvalFlags::stopForReturn ) {

context.stopFlags &= ~EvalFlags::stopForReturn;

return context.abiResult();

} else {

if ( needResult ) context.throw_error("end of block without return");

return v_zero();

}

// SimNode_Let

vec4f SimNode_Let::eval ( Context & context ) {

for ( uint32_t i = 0; i!=total && !context.stopFlags; ++i )

list[i]->eval(context);

DAS_EXCEPTION_POINT;

return subexpr ? subexpr->eval(context) : v_zero();

}

// SimNode_IfThenElse

vec4f SimNode_IfThenElse::eval ( Context & context ) {

bool cmp = cond->evalBool(context);

DAS_EXCEPTION_POINT;

if ( cmp ) {

return if_true->eval(context);

} else if ( if_false ) {

return if_false->eval(context);

} else {

return v_zero();

}

// SimNode_While

vec4f SimNode_While::eval ( Context & context ) {

while ( cond->evalBool(context) && !context.stopFlags ) {

body->eval(context);

}

context.stopFlags &= ~EvalFlags::stopForBreak;

return v_zero();

}

// Return

vec4f SimNode_Return::eval ( Context & context ) {

if ( subexpr ) context.abiResult() = subexpr->eval(context);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

vec4f SimNode_ReturnAndCopy::eval ( Context & context ) {

auto pr = subexpr->evalPtr(context);

DAS_EXCEPTION_POINT;

auto pl = context.abiCopyOrMoveResult();

memcpy ( pl, pr, size);

context.abiResult() = cast<char *>::from(pl);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

vec4f SimNode_ReturnAndMove::eval ( Context & context ) {

auto pr = subexpr->evalPtr(context);

DAS_EXCEPTION_POINT;

auto pl = context.abiCopyOrMoveResult();

memcpy ( pl, pr, size);

memset ( pr, 0, size);

context.abiResult() = cast<char *>::from(pl);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

vec4f SimNode_ReturnReference::eval ( Context & context ) {

char * ref = subexpr->evalPtr(context);

if ( context.stack.bottom()<=ref && ref<context.stack.sp()) {

context.throw_error("reference bellow current function stack frame");

return v_zero();

}

#if DAS_ENABLE_STACK_WALK

auto pp = (Prologue *) context.stack.sp();

auto top = context.stack.sp() + pp->info->stackSize;

if ( context.stack.sp()<=ref && ref<top ) {

context.throw_error("reference to current function stack frame");

return v_zero();

}

#endif

context.abiResult() = cast<char *>::from(ref);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

vec4f SimNode_ReturnAndCopyFromBlock::eval ( Context & context ) {

auto pr = subexpr->evalPtr(context);

DAS_EXCEPTION_POINT;

auto ba = (BlockArguments *) ( context.stack.sp() + argStackTop );

auto pl = ba->copyOrMoveResult;

memcpy ( pl, pr, size);

context.abiResult() = cast<char *>::from(pl);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

vec4f SimNode_ReturnAndMoveFromBlock::eval ( Context & context ) {

auto pr = subexpr->evalPtr(context);

DAS_EXCEPTION_POINT;

auto ba = (BlockArguments *) ( context.stack.sp() + argStackTop );

auto pl = ba->copyOrMoveResult;

memcpy ( pl, pr, size);

memset ( pr, 0, size);

context.abiResult() = cast<char *>::from(pl);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

vec4f SimNode_ReturnReferenceFromBlock::eval ( Context & context ) {

char * ref = subexpr->evalPtr(context);

if ( context.stack.bottom()<=ref && ref<context.stack.ap() ) {

context.throw_error("reference bellow current call chain stack frame");

return v_zero();

}

context.abiResult() = cast<char *>::from(ref);

context.stopFlags |= EvalFlags::stopForReturn;

return v_zero();

}

// Context

Context::Context(const string * lines, uint32_t heapSize)

: heap(heapSize)

, code(64*1024)

, debugInfo(64*1024)

, stack(16*1024)

{

debugInput = lines;

}

#ifdef _MSC_VER

#pragma warning(push)

#pragma warning(disable:4324)

#pragma warning(disable:4701)

#endif

vec4f Context::invokeEx(const Block &block, vec4f * args, void * cmres, function<void (SimNode *)> && when) {

auto watermark = stack.invoke(block.stackOffset);

BlockArguments * ba = nullptr;

BlockArguments saveArguments;

if ( block.argumentsOffset ) {

ba = (BlockArguments *) ( stack.bottom() + block.argumentsOffset );

saveArguments = *ba;

ba->arguments = args;

ba->copyOrMoveResult = (char *) cmres;

}

when(block.body);

if ( ba ) {

*ba = saveArguments;

}

stack.pop(watermark);

return result;

}

#ifdef _MSC_VER

#pragma warning(pop)

#endif

vec4f Context::callEx(int fnIndex, vec4f *args, void * cmres, int line, function<void (SimNode *)> && when) {

assert(fnIndex>=0 && fnIndex<totalFunctions && "function index out of range");

auto & fn = functions[fnIndex];

// PUSH

auto watermark = stack.push(fn.stackSize);

if ( watermark==-1u ) {

throw_error("stack overflow");

return v_zero();

}

// fill prologue

Prologue * pp = (Prologue *) stack.sp();

pp->arguments = args;

pp->copyOrMoveResult = (char *)cmres;

#if DAS_ENABLE_STACK_WALK

pp->info = fn.debug;

pp->line = line;

#endif

// CALL

when(fn.code);

stopFlags &= ~(EvalFlags::stopForReturn | EvalFlags::stopForBreak);

// POP

stack.pop(watermark);

return result;

}

void Context::runInitScript ( void ) {

for ( int i=0; i!=totalVariables && !stopFlags; ++i ) {

auto & pv = globalVariables[i];

if ( pv.init ) {

pv.init->eval(*this);

} else {

memset ( cast<char *>::to(pv.value), 0, pv.size );

}

int Context::findFunction ( const char * name ) const {

for ( int fni = 0; fni != totalFunctions; ++fni ) {

if ( strcmp(functions[fni].name, name)==0 ) {

return fni;

}

return -1;

}

int Context::findVariable ( const char * name ) const {

for ( int vni = 0; vni != totalVariables; ++vni ) {

if ( strcmp(globalVariables[vni].name, name)==0 ) {

return vni;

}

return -1;

}

void Context::stackWalk() {

auto str = getStackWalk();

to_out(str.c_str());

}

string Context::getStackWalk( bool args ) {

stringstream ssw;

#if DAS_ENABLE_STACK_WALK

ssw << "\nCALL STACK (sp=" << (stack.top() - stack.sp()) << "):\n";

char * sp = stack.sp();

while ( sp < stack.top() ) {

Prologue * pp = (Prologue *) sp;

if ( pp->line ) {

ssw << pp->info->name << " at line " << pp->line << " (sp=" << (stack.top() - sp) << ")\n";

} else {

ssw << pp->info->name << "(sp=" << (stack.top() - sp) << ")\n";

}

if ( args ) {

for ( uint32_t i = 0; i != pp->info->argsSize; ++i ) {

ssw << "\t" << pp->info->args[i]->name

<< " : " << debug_type(pp->info->args[i])

<< " = \t" << debug_value(pp->arguments[i], pp->info->args[i], PrintFlags::stackwalker) << "\n";

}

sp += pp->info->stackSize;

}

ssw << "\n";

#else

ssw << "\nCALL STACK TRACKING DISABLED:\n\n";

#endif

return ssw.str();

}

void Context::breakPoint(int, int ) const {

#ifdef _MSC_VER

__debugbreak();

#else

raise(SIGTRAP);

#endif

}

void Context::to_out ( const char * message ) {

cout << message;

}

void Context::to_err ( const char * message ) {

cerr << message;

}

daScript/src/simulate/simulate.cpp at split-heap · Bais/daScript · GitHub

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