PDI 1.5.4

the PDI data interface

expression.h
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25
26#ifndef PDI_EXPRESSION_H_
27#define PDI_EXPRESSION_H_
28
29#include <map>
30#include <memory>
31#include <string>
32#include <utility>
33#include <vector>
34
35#include <pdi/paraconf_wrapper.h>
36
37#include <pdi/pdi_fwd.h>
38
39namespace PDI {
40
41class PDI_EXPORT Expression
42{
43 struct PDI_NO_EXPORT Impl;
44
45 std::unique_ptr<Impl> m_impl;
46
47 Expression(std::unique_ptr<Impl>);
48
49public:
55
60 Expression(const Expression& expr);
61
67
75 Expression(const char* expr);
76
84 Expression(const std::string& expr);
85
90 Expression(long expr);
91
96 Expression(double expr);
97
102 Expression(PC_tree_t expr);
103
107
114
121
127 Expression operator+(const Expression& expr) const;
128
134 Expression operator*(const Expression& expr) const;
135
141 Expression operator-(const Expression& expr) const;
142
148 Expression operator/(const Expression& expr) const;
149
155 Expression operator%(const Expression& expr) const;
156
161 operator bool () const;
162
167 long to_long(Context& ctx) const;
168
173 double to_double(Context& ctx) const;
174
179 std::string to_string(Context& ctx) const;
180
186 Ref to_ref(Context& ctx) const;
187
194 Ref to_ref(Context& ctx, Datatype_sptr type) const;
195
202 static std::pair<Expression, long> parse_reference(const char* reference_str);
203};
204
205} // namespace PDI
206
207#endif // PDI_EXPRESSION_H_
Definition: context.h:45
Definition: expression.h:42
Ref to_ref(Context &ctx, Datatype_sptr type) const
Evaluates an expression as a data reference.
Expression operator/(const Expression &expr) const
Division operator of an expression.
Expression()
Builds an empty expression.
Expression & operator=(const Expression &expr)
Copies an expression.
static std::pair< Expression, long > parse_reference(const char *reference_str)
Parses a string that starts with $ and represents a reference expression.
Expression operator*(const Expression &expr) const
Multiplication operator of an expression.
Expression & operator=(Expression &&expr)
Moves an expression.
double to_double(Context &ctx) const
Evaluates an expression as a float.
std::string to_string(Context &ctx) const
Evaluates an expression as a string.
Expression(long expr)
Builds an expression that represents an integer.
Expression(const std::string &expr)
Builds (i.e.
Expression(const char *expr)
Builds (i.e.
Expression operator%(const Expression &expr) const
Modulo operator of an expression.
Expression(double expr)
Builds an expression that represents a float.
Expression operator+(const Expression &expr) const
Summation operator of an expression.
Expression(Expression &&expr)
Moves an expression.
long to_long(Context &ctx) const
Evaluates an expression as an integer.
~Expression()
Destroys an expression.
Expression(const Expression &expr)
Copies an expression.
Expression(PC_tree_t expr)
Builds an expression that is parsed from PC_tree_t.
Ref to_ref(Context &ctx) const
Evaluates an expression as a data reference.
Expression operator-(const Expression &expr) const
Subtraction operator of an expression.
A dynamically typed reference to data with automatic memory management and read/write locking semanti...
Definition: ref_any.h:273
Definition: array_datatype.h:38
std::shared_ptr< const Datatype > Datatype_sptr
Definition: pdi_fwd.h:78