src/scriptvm/CoreVMFunctions.cpp

/*
 * Copyright (c) 2014 Christian Schoenebeck
 *
 * http://www.linuxsampler.org
 *
 * This file is part of LinuxSampler and released under the same terms.
 * See README file for details.
 */

#include "CoreVMFunctions.h"

#include <iostream>
#include <math.h>
#include <stdlib.h>
#include "tree.h"
#include "ScriptVM.h"

namespace LinuxSampler {

VMFnResult* VMEmptyResultFunction::errorResult() {
    result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED);
    return &result;
}

VMFnResult* VMEmptyResultFunction::successResult() {
    result.flags = STMT_SUCCESS;
    return &result;
}

VMFnResult* VMIntResultFunction::errorResult(int i) {
    result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED);
    result.value = i;
    return &result;
}

VMFnResult* VMIntResultFunction::successResult(int i) {
    result.flags = STMT_SUCCESS;
    result.value = i;
    return &result;
}

VMFnResult* VMStringResultFunction::errorResult(const String& s) {
    result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED | STMT_ERROR_OCCURRED);
    result.value = s;
    return &result;
}

VMFnResult* VMStringResultFunction::successResult(const String& s) {
    result.flags = STMT_SUCCESS;
    result.value = s;
    return &result;
}

bool CoreVMFunction_message::acceptsArgType(int iArg, ExprType_t type) const {
    return type == INT_EXPR || type == STRING_EXPR;
}

VMFnResult* CoreVMFunction_message::exec(VMFnArgs* args) {
    if (!args->argsCount()) return errorResult();

    VMStringExpr* strExpr = dynamic_cast<VMStringExpr*>(args->arg(0));
    if (strExpr) {
        std::cout << "[ScriptVM] " << strExpr->evalStr() << "\n";
        return successResult();
    }

    VMIntExpr* intExpr = dynamic_cast<VMIntExpr*>(args->arg(0));
    if (intExpr) {
        std::cout << "[ScriptVM] " << intExpr->evalInt() << "\n";
        return successResult();
    }

    return errorResult();
}

VMFnResult* CoreVMFunction_exit::exec(VMFnArgs* args) {
    this->result.flags = STMT_ABORT_SIGNALLED;
    return &result;
}

VMFnResult* CoreVMFunction_wait::exec(VMFnArgs* args) {
    ExecContext* ctx = dynamic_cast<ExecContext*>(vm->currentVMExecContext());
    VMIntExpr* expr = dynamic_cast<VMIntExpr*>(args->arg(0));
    ctx->suspendMicroseconds = expr->evalInt();
    this->result.flags = STMT_SUSPEND_SIGNALLED;
    return &result;
}

bool CoreVMFunction_abs::acceptsArgType(int iArg, ExprType_t type) const {
    return type == INT_EXPR;
}

VMFnResult* CoreVMFunction_abs::exec(VMFnArgs* args) {
    return successResult( ::abs(args->arg(0)->asInt()->evalInt()) );
}

bool CoreVMFunction_random::acceptsArgType(int iArg, ExprType_t type) const {
    return type == INT_EXPR;
}

VMFnResult* CoreVMFunction_random::exec(VMFnArgs* args) {
    int iMin = args->arg(0)->asInt()->evalInt();
    int iMax = args->arg(1)->asInt()->evalInt();
    float f = float(::random()) / float(RAND_MAX);
    return successResult(
        iMin + roundf( f * float(iMax - iMin) )
    );
}

bool CoreVMFunction_num_elements::acceptsArgType(int iArg, ExprType_t type) const {
    return type == INT_ARR_EXPR;
}

VMFnResult* CoreVMFunction_num_elements::exec(VMFnArgs* args) {
    return successResult( args->arg(0)->asIntArray()->arraySize() );
}

} // namespace LinuxSampler
1	/*
2	* Copyright (c) 2014 Christian Schoenebeck
3	*
4	* http://www.linuxsampler.org
5	*
6	* This file is part of LinuxSampler and released under the same terms.
7	* See README file for details.
8	*/
9
10	#include "CoreVMFunctions.h"
11
12	#include <iostream>
13	#include <math.h>
14	#include <stdlib.h>
15	#include "tree.h"
16	#include "ScriptVM.h"
17
18	namespace LinuxSampler {
19
20	VMFnResult* VMEmptyResultFunction::errorResult() {
21	result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED \| STMT_ERROR_OCCURRED);
22	return &result;
23	}
24
25	VMFnResult* VMEmptyResultFunction::successResult() {
26	result.flags = STMT_SUCCESS;
27	return &result;
28	}
29
30	VMFnResult* VMIntResultFunction::errorResult(int i) {
31	result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED \| STMT_ERROR_OCCURRED);
32	result.value = i;
33	return &result;
34	}
35
36	VMFnResult* VMIntResultFunction::successResult(int i) {
37	result.flags = STMT_SUCCESS;
38	result.value = i;
39	return &result;
40	}
41
42	VMFnResult* VMStringResultFunction::errorResult(const String& s) {
43	result.flags = StmtFlags_t(STMT_ABORT_SIGNALLED \| STMT_ERROR_OCCURRED);
44	result.value = s;
45	return &result;
46	}
47
48	VMFnResult* VMStringResultFunction::successResult(const String& s) {
49	result.flags = STMT_SUCCESS;
50	result.value = s;
51	return &result;
52	}
53
54	bool CoreVMFunction_message::acceptsArgType(int iArg, ExprType_t type) const {
55	return type == INT_EXPR \|\| type == STRING_EXPR;
56	}
57
58	VMFnResult* CoreVMFunction_message::exec(VMFnArgs* args) {
59	if (!args->argsCount()) return errorResult();
60
61	VMStringExpr* strExpr = dynamic_cast<VMStringExpr*>(args->arg(0));
62	if (strExpr) {
63	std::cout << "[ScriptVM] " << strExpr->evalStr() << "\n";
64	return successResult();
65	}
66
67	VMIntExpr* intExpr = dynamic_cast<VMIntExpr*>(args->arg(0));
68	if (intExpr) {
69	std::cout << "[ScriptVM] " << intExpr->evalInt() << "\n";
70	return successResult();
71	}
72
73	return errorResult();
74	}
75
76	VMFnResult* CoreVMFunction_exit::exec(VMFnArgs* args) {
77	this->result.flags = STMT_ABORT_SIGNALLED;
78	return &result;
79	}
80
81	VMFnResult* CoreVMFunction_wait::exec(VMFnArgs* args) {
82	ExecContext* ctx = dynamic_cast<ExecContext*>(vm->currentVMExecContext());
83	VMIntExpr* expr = dynamic_cast<VMIntExpr*>(args->arg(0));
84	ctx->suspendMicroseconds = expr->evalInt();
85	this->result.flags = STMT_SUSPEND_SIGNALLED;
86	return &result;
87	}
88
89	bool CoreVMFunction_abs::acceptsArgType(int iArg, ExprType_t type) const {
90	return type == INT_EXPR;
91	}
92
93	VMFnResult* CoreVMFunction_abs::exec(VMFnArgs* args) {
94	return successResult( ::abs(args->arg(0)->asInt()->evalInt()) );
95	}
96
97	bool CoreVMFunction_random::acceptsArgType(int iArg, ExprType_t type) const {
98	return type == INT_EXPR;
99	}
100
101	VMFnResult* CoreVMFunction_random::exec(VMFnArgs* args) {
102	int iMin = args->arg(0)->asInt()->evalInt();
103	int iMax = args->arg(1)->asInt()->evalInt();
104	float f = float(::random()) / float(RAND_MAX);
105	return successResult(
106	iMin + roundf( f * float(iMax - iMin) )
107	);
108	}
109
110	bool CoreVMFunction_num_elements::acceptsArgType(int iArg, ExprType_t type) const {
111	return type == INT_ARR_EXPR;
112	}
113
114	VMFnResult* CoreVMFunction_num_elements::exec(VMFnArgs* args) {
115	return successResult( args->arg(0)->asIntArray()->arraySize() );
116	}
117
118	} // namespace LinuxSampler