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#pragma once
#include "enginedata.h"
#include "query.h"
#include <vector>
#include <unordered_map>
#include <map>
struct Script;
struct Query;
enum ExprNodeType {
EFN_ADD=0, EFN_SUBTRACT, EFN_MULTIPLY, EFN_DIVIDE, EFN_MODULO,
EFN_EQUAL, EFN_UNEQUAL,
EFN_LESS, EFN_GREATER, EFN_LESSEQUAL, EFN_GREATEREQUAL,
EFN_AND, EFN_OR,
EFN_NOT, //1 arg
EFN_MAX, EFN_MIN,
EFN_NUMBER, EFN_VARIABLE, //0 arg
EFN_INVALID //invalid
};
bool validateExprNodeType(ExprNodeType);
struct Expression {
ExprNodeType type;
vector<Expression> args;
int intval;
string varname;
int evaluate(unordered_map<string,QueryResult>&);
};
enum ScriptLineType {
SLT_QUERYSTUB,
SLT_IF,
SLT_WHILE,
SLT_ASSIGNMENT
};
struct ScriptLine {
ScriptLineType type;
string *querystub=NULL;
string *destvar=NULL;
Expression *expr=NULL;
Script *block=NULL;
~ScriptLine(void);
vector<QueryResult> execute(map<string,Table>&,unordered_map<string,QueryResult>&);
};
struct Script {
vector<ScriptLine> lines;
vector<QueryResult> execute(map<string,Table>&);
vector<QueryResult> execute(map<string,Table>&,unordered_map<string,QueryResult>&);
};
//just hands over pointer, CALLING FUNCTION TAKES OWNERSHIP
Query* resolveQueryStub(const string &stub,map<string,Table>&,unordered_map<string,QueryResult>&);
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