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/* |
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* Copyright (c) 2014-2015 Christian Schoenebeck |
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* |
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* http://www.linuxsampler.org |
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* |
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* This file is part of LinuxSampler and released under the same terms. |
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* See README file for details. |
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*/ |
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|
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#include "CoreVMFunctions.h" |
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|
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#include <iostream> |
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#include <math.h> |
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#include <stdlib.h> |
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#include "tree.h" |
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#include "ScriptVM.h" |
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|
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namespace LinuxSampler { |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// class VMEmptyResultFunction |
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|
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VMFnResult* VMEmptyResultFunction::errorResult() { |
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result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED); |
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return &result; |
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} |
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|
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VMFnResult* VMEmptyResultFunction::successResult() { |
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result.flags = STMT_SUCCESS; |
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return &result; |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// class VMIntResultFunction |
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|
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VMFnResult* VMIntResultFunction::errorResult(int i) { |
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result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED); |
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result.value = i; |
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return &result; |
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} |
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|
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VMFnResult* VMIntResultFunction::successResult(int i) { |
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result.flags = STMT_SUCCESS; |
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result.value = i; |
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return &result; |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// class VMStringResultFunction |
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|
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VMFnResult* VMStringResultFunction::errorResult(const String& s) { |
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result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED); |
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result.value = s; |
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return &result; |
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} |
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|
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VMFnResult* VMStringResultFunction::successResult(const String& s) { |
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result.flags = STMT_SUCCESS; |
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result.value = s; |
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return &result; |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: message() |
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|
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bool CoreVMFunction_message::acceptsArgType(int iArg, ExprType_t type) const { |
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return type == INT_EXPR || type == STRING_EXPR; |
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} |
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|
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VMFnResult* CoreVMFunction_message::exec(VMFnArgs* args) { |
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if (!args->argsCount()) return errorResult(); |
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|
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VMStringExpr* strExpr = dynamic_cast<VMStringExpr*>(args->arg(0)); |
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if (strExpr) { |
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std::cout << "[ScriptVM] " << strExpr->evalStr() << "\n"; |
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return successResult(); |
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} |
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|
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VMIntExpr* intExpr = dynamic_cast<VMIntExpr*>(args->arg(0)); |
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if (intExpr) { |
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std::cout << "[ScriptVM] " << intExpr->evalInt() << "\n"; |
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return successResult(); |
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} |
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|
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return errorResult(); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: exit() |
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|
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VMFnResult* CoreVMFunction_exit::exec(VMFnArgs* args) { |
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this->result.flags = STMT_ABORT_SIGNALLED; |
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return &result; |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: wait() |
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|
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VMFnResult* CoreVMFunction_wait::exec(VMFnArgs* args) { |
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ExecContext* ctx = dynamic_cast<ExecContext*>(vm->currentVMExecContext()); |
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VMIntExpr* expr = dynamic_cast<VMIntExpr*>(args->arg(0)); |
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int us = expr->evalInt(); |
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if (us < 0) { |
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wrnMsg("wait(): argument may not be negative! Aborting script!"); |
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this->result.flags = STMT_ABORT_SIGNALLED; |
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} else if (us == 0) { |
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wrnMsg("wait(): argument may not be zero! Aborting script!"); |
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this->result.flags = STMT_ABORT_SIGNALLED; |
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} else { |
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ctx->suspendMicroseconds = us; |
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this->result.flags = STMT_SUSPEND_SIGNALLED; |
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} |
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return &result; |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: abs() |
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|
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bool CoreVMFunction_abs::acceptsArgType(int iArg, ExprType_t type) const { |
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return type == INT_EXPR; |
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} |
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|
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VMFnResult* CoreVMFunction_abs::exec(VMFnArgs* args) { |
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return successResult( ::abs(args->arg(0)->asInt()->evalInt()) ); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: random() |
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|
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bool CoreVMFunction_random::acceptsArgType(int iArg, ExprType_t type) const { |
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return type == INT_EXPR; |
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} |
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|
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VMFnResult* CoreVMFunction_random::exec(VMFnArgs* args) { |
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int iMin = args->arg(0)->asInt()->evalInt(); |
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int iMax = args->arg(1)->asInt()->evalInt(); |
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float f = float(::rand()) / float(RAND_MAX); |
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return successResult( |
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iMin + roundf( f * float(iMax - iMin) ) |
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); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: num_elements() |
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|
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bool CoreVMFunction_num_elements::acceptsArgType(int iArg, ExprType_t type) const { |
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return type == INT_ARR_EXPR; |
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} |
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|
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VMFnResult* CoreVMFunction_num_elements::exec(VMFnArgs* args) { |
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return successResult( args->arg(0)->asIntArray()->arraySize() ); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: inc() |
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|
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VMFnResult* CoreVMFunction_inc::exec(VMFnArgs* args) { |
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VMExpr* arg = args->arg(0); |
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VMIntExpr* in = dynamic_cast<VMIntExpr*>(arg); |
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VMVariable* out = dynamic_cast<VMVariable*>(arg); |
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if (!in || !out) successResult(0); |
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int i = in->evalInt() + 1; |
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IntLiteral tmp(i); |
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out->assignExpr(&tmp); |
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return successResult(i); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: dec() |
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|
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VMFnResult* CoreVMFunction_dec::exec(VMFnArgs* args) { |
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VMExpr* arg = args->arg(0); |
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VMIntExpr* in = dynamic_cast<VMIntExpr*>(arg); |
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VMVariable* out = dynamic_cast<VMVariable*>(arg); |
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if (!in || !out) successResult(0); |
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int i = in->evalInt() - 1; |
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IntLiteral tmp(i); |
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out->assignExpr(&tmp); |
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return successResult(i); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: sh_left() |
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|
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VMFnResult* CoreVMFunction_sh_left::exec(VMFnArgs* args) { |
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int i = args->arg(0)->asInt()->evalInt(); |
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int n = args->arg(1)->asInt()->evalInt(); |
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return successResult(i << n); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: sh_right() |
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|
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VMFnResult* CoreVMFunction_sh_right::exec(VMFnArgs* args) { |
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int i = args->arg(0)->asInt()->evalInt(); |
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int n = args->arg(1)->asInt()->evalInt(); |
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return successResult(i >> n); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: min() |
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VMFnResult* CoreVMFunction_min::exec(VMFnArgs* args) { |
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int l = args->arg(0)->asInt()->evalInt(); |
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int r = args->arg(1)->asInt()->evalInt(); |
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return successResult(l < r ? l : r); |
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} |
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|
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/////////////////////////////////////////////////////////////////////////// |
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// built-in script function: max() |
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|
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VMFnResult* CoreVMFunction_max::exec(VMFnArgs* args) { |
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int l = args->arg(0)->asInt()->evalInt(); |
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int r = args->arg(1)->asInt()->evalInt(); |
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return successResult(l > r ? l : r); |
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} |
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|
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} // namespace LinuxSampler |