Geogram  Version 1.9.1
A programming library of geometric algorithms
boolean_expression.h
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39 
40 #ifndef GEOGRAM_BASIC_BOOLEAN_EXPRESSION
41 #define GEOGRAM_BASIC_BOOLEAN_EXPRESSION
42 
43 #include <geogram/basic/common.h>
44 #include <geogram/basic/numeric.h>
45 #include <string>
46 
52 namespace GEO {
53 
57  class GEOGRAM_API BooleanExpression {
58  public:
59 
72  BooleanExpression(const std::string& expr);
73 
80 
81  protected:
82  bool parse_or();
83  bool parse_and();
84  bool parse_factor();
85  bool parse_variable();
86  char cur_char() const;
87  void next_char();
88 
89  private:
90  std::string expr_;
91  std::string::iterator ptr_;
92  index_t x_;
93  };
94 
95 
96 }
97 
98 #endif
A simple parser for boolean expressions.
BooleanExpression(const std::string &expr)
Constructs a boolean expression.
bool operator()(index_t x)
Evaluates the boolean expression.
Common include file, providing basic definitions. Should be included before anything else by all head...
Global Vorpaline namespace.
Definition: basic.h:55
geo_index_t index_t
The type for storing and manipulating indices.
Definition: numeric.h:329
Types and functions for numbers manipulation.