mirror of
https://github.com/godotengine/godot.git
synced 2024-12-11 05:34:17 +00:00
358 lines
7.2 KiB
C++
358 lines
7.2 KiB
C++
/*************************************************************************/
|
|
/* expression.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md) */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef EXPRESSION_H
|
|
#define EXPRESSION_H
|
|
|
|
#include "core/reference.h"
|
|
|
|
class Expression : public Reference {
|
|
GDCLASS(Expression, Reference)
|
|
public:
|
|
enum BuiltinFunc {
|
|
MATH_SIN,
|
|
MATH_COS,
|
|
MATH_TAN,
|
|
MATH_SINH,
|
|
MATH_COSH,
|
|
MATH_TANH,
|
|
MATH_ASIN,
|
|
MATH_ACOS,
|
|
MATH_ATAN,
|
|
MATH_ATAN2,
|
|
MATH_SQRT,
|
|
MATH_FMOD,
|
|
MATH_FPOSMOD,
|
|
MATH_FLOOR,
|
|
MATH_CEIL,
|
|
MATH_ROUND,
|
|
MATH_ABS,
|
|
MATH_SIGN,
|
|
MATH_POW,
|
|
MATH_LOG,
|
|
MATH_EXP,
|
|
MATH_ISNAN,
|
|
MATH_ISINF,
|
|
MATH_EASE,
|
|
MATH_DECIMALS,
|
|
MATH_STEPIFY,
|
|
MATH_LERP,
|
|
MATH_INVERSE_LERP,
|
|
MATH_RANGE_LERP,
|
|
MATH_DECTIME,
|
|
MATH_RANDOMIZE,
|
|
MATH_RAND,
|
|
MATH_RANDF,
|
|
MATH_RANDOM,
|
|
MATH_SEED,
|
|
MATH_RANDSEED,
|
|
MATH_DEG2RAD,
|
|
MATH_RAD2DEG,
|
|
MATH_LINEAR2DB,
|
|
MATH_DB2LINEAR,
|
|
MATH_POLAR2CARTESIAN,
|
|
MATH_CARTESIAN2POLAR,
|
|
MATH_WRAP,
|
|
MATH_WRAPF,
|
|
LOGIC_MAX,
|
|
LOGIC_MIN,
|
|
LOGIC_CLAMP,
|
|
LOGIC_NEAREST_PO2,
|
|
OBJ_WEAKREF,
|
|
FUNC_FUNCREF,
|
|
TYPE_CONVERT,
|
|
TYPE_OF,
|
|
TYPE_EXISTS,
|
|
TEXT_CHAR,
|
|
TEXT_STR,
|
|
TEXT_PRINT,
|
|
TEXT_PRINTERR,
|
|
TEXT_PRINTRAW,
|
|
VAR_TO_STR,
|
|
STR_TO_VAR,
|
|
VAR_TO_BYTES,
|
|
BYTES_TO_VAR,
|
|
COLORN,
|
|
FUNC_MAX
|
|
};
|
|
|
|
static int get_func_argument_count(BuiltinFunc p_func);
|
|
static String get_func_name(BuiltinFunc p_func);
|
|
static void exec_func(BuiltinFunc p_func, const Variant **p_inputs, Variant *r_return, Variant::CallError &r_error, String &r_error_str);
|
|
static BuiltinFunc find_function(const String &p_string);
|
|
|
|
private:
|
|
static const char *func_name[FUNC_MAX];
|
|
|
|
struct Input {
|
|
|
|
Variant::Type type;
|
|
String name;
|
|
|
|
Input() :
|
|
type(Variant::NIL) {
|
|
}
|
|
};
|
|
|
|
Vector<Input> inputs;
|
|
Variant::Type output_type;
|
|
|
|
String expression;
|
|
|
|
bool sequenced;
|
|
int str_ofs;
|
|
bool expression_dirty;
|
|
|
|
bool _compile_expression();
|
|
|
|
enum TokenType {
|
|
TK_CURLY_BRACKET_OPEN,
|
|
TK_CURLY_BRACKET_CLOSE,
|
|
TK_BRACKET_OPEN,
|
|
TK_BRACKET_CLOSE,
|
|
TK_PARENTHESIS_OPEN,
|
|
TK_PARENTHESIS_CLOSE,
|
|
TK_IDENTIFIER,
|
|
TK_BUILTIN_FUNC,
|
|
TK_SELF,
|
|
TK_CONSTANT,
|
|
TK_BASIC_TYPE,
|
|
TK_COLON,
|
|
TK_COMMA,
|
|
TK_PERIOD,
|
|
TK_OP_IN,
|
|
TK_OP_EQUAL,
|
|
TK_OP_NOT_EQUAL,
|
|
TK_OP_LESS,
|
|
TK_OP_LESS_EQUAL,
|
|
TK_OP_GREATER,
|
|
TK_OP_GREATER_EQUAL,
|
|
TK_OP_AND,
|
|
TK_OP_OR,
|
|
TK_OP_NOT,
|
|
TK_OP_ADD,
|
|
TK_OP_SUB,
|
|
TK_OP_MUL,
|
|
TK_OP_DIV,
|
|
TK_OP_MOD,
|
|
TK_OP_SHIFT_LEFT,
|
|
TK_OP_SHIFT_RIGHT,
|
|
TK_OP_BIT_AND,
|
|
TK_OP_BIT_OR,
|
|
TK_OP_BIT_XOR,
|
|
TK_OP_BIT_INVERT,
|
|
TK_INPUT,
|
|
TK_EOF,
|
|
TK_ERROR,
|
|
TK_MAX
|
|
};
|
|
|
|
static const char *token_name[TK_MAX];
|
|
struct Token {
|
|
|
|
TokenType type;
|
|
Variant value;
|
|
};
|
|
|
|
void _set_error(const String &p_err) {
|
|
if (error_set)
|
|
return;
|
|
error_str = p_err;
|
|
error_set = true;
|
|
}
|
|
|
|
Error _get_token(Token &r_token);
|
|
|
|
String error_str;
|
|
bool error_set;
|
|
|
|
struct ENode {
|
|
|
|
enum Type {
|
|
TYPE_INPUT,
|
|
TYPE_CONSTANT,
|
|
TYPE_SELF,
|
|
TYPE_OPERATOR,
|
|
TYPE_INDEX,
|
|
TYPE_NAMED_INDEX,
|
|
TYPE_ARRAY,
|
|
TYPE_DICTIONARY,
|
|
TYPE_CONSTRUCTOR,
|
|
TYPE_BUILTIN_FUNC,
|
|
TYPE_CALL
|
|
};
|
|
|
|
ENode *next;
|
|
|
|
Type type;
|
|
|
|
ENode() { next = NULL; }
|
|
virtual ~ENode() {
|
|
if (next) {
|
|
memdelete(next);
|
|
}
|
|
}
|
|
};
|
|
|
|
struct ExpressionNode {
|
|
|
|
bool is_op;
|
|
union {
|
|
Variant::Operator op;
|
|
ENode *node;
|
|
};
|
|
};
|
|
|
|
ENode *_parse_expression();
|
|
|
|
struct InputNode : public ENode {
|
|
|
|
int index;
|
|
InputNode() {
|
|
type = TYPE_INPUT;
|
|
}
|
|
};
|
|
|
|
struct ConstantNode : public ENode {
|
|
|
|
Variant value;
|
|
ConstantNode() {
|
|
type = TYPE_CONSTANT;
|
|
}
|
|
};
|
|
|
|
struct OperatorNode : public ENode {
|
|
|
|
Variant::Operator op;
|
|
|
|
ENode *nodes[2];
|
|
|
|
OperatorNode() {
|
|
type = TYPE_OPERATOR;
|
|
}
|
|
};
|
|
|
|
struct SelfNode : public ENode {
|
|
|
|
SelfNode() {
|
|
type = TYPE_SELF;
|
|
}
|
|
};
|
|
|
|
struct IndexNode : public ENode {
|
|
ENode *base;
|
|
ENode *index;
|
|
|
|
IndexNode() {
|
|
type = TYPE_INDEX;
|
|
}
|
|
};
|
|
|
|
struct NamedIndexNode : public ENode {
|
|
ENode *base;
|
|
StringName name;
|
|
|
|
NamedIndexNode() {
|
|
type = TYPE_NAMED_INDEX;
|
|
}
|
|
};
|
|
|
|
struct ConstructorNode : public ENode {
|
|
Variant::Type data_type;
|
|
Vector<ENode *> arguments;
|
|
|
|
ConstructorNode() {
|
|
type = TYPE_CONSTRUCTOR;
|
|
}
|
|
};
|
|
|
|
struct CallNode : public ENode {
|
|
ENode *base;
|
|
StringName method;
|
|
Vector<ENode *> arguments;
|
|
|
|
CallNode() {
|
|
type = TYPE_CALL;
|
|
}
|
|
};
|
|
|
|
struct ArrayNode : public ENode {
|
|
Vector<ENode *> array;
|
|
ArrayNode() {
|
|
type = TYPE_ARRAY;
|
|
}
|
|
};
|
|
|
|
struct DictionaryNode : public ENode {
|
|
Vector<ENode *> dict;
|
|
DictionaryNode() {
|
|
type = TYPE_DICTIONARY;
|
|
}
|
|
};
|
|
|
|
struct BuiltinFuncNode : public ENode {
|
|
BuiltinFunc func;
|
|
Vector<ENode *> arguments;
|
|
BuiltinFuncNode() {
|
|
type = TYPE_BUILTIN_FUNC;
|
|
}
|
|
};
|
|
|
|
template <class T>
|
|
T *alloc_node() {
|
|
T *node = memnew(T);
|
|
node->next = nodes;
|
|
nodes = node;
|
|
return node;
|
|
}
|
|
|
|
ENode *root;
|
|
ENode *nodes;
|
|
|
|
Vector<String> input_names;
|
|
|
|
bool execution_error;
|
|
bool _execute(const Array &p_inputs, Object *p_instance, Expression::ENode *p_node, Variant &r_ret, String &r_error_str);
|
|
|
|
protected:
|
|
static void _bind_methods();
|
|
|
|
public:
|
|
Error parse(const String &p_expression, const Vector<String> &p_input_names = Vector<String>());
|
|
Variant execute(Array p_inputs, Object *p_base = NULL, bool p_show_error = true);
|
|
bool has_execute_failed() const;
|
|
String get_error_text() const;
|
|
|
|
Expression();
|
|
~Expression();
|
|
};
|
|
|
|
#endif // EXPRESSION_H
|