1 files changed, 86 insertions, 0 deletions
diff --git a/script.cpp b/script.cpp
new file mode 100644
index 0000000..689066f
--- /dev/null
+++ b/script.cpp
@@ -0,0 +1,86 @@
+#include "script.h"
+
+bool validateExprNodeType(ExprNodeType type){
+	return type>=EFN_ADD&&type<=EFN_INVALID;
+}
+
+/*//returns parsed func and length of func
+pair<ExprFunction,int> parseExprFunction(const string &s,int start=0){
+	switch(s[start]){
+	case '+':
+		return {EFN_ADD,1};
+	case '-':
+		return {EFN_SUBTRACT,1};
+	case '*':
+		return {EFN_MULTIPLY,1};
+	case '/':
+		return {EFN_DIVIDE,1};
+	case '%':
+		return {EFN_MODULO,1};
+	case '=':
+		if(s[start+1]=='=')return {EFN_EQUAL,2};
+		else return {EFN_INVALID,0};
+	case '!':
+		if(s[start+1]=='=')return {EFN_UNEQUAL,2};
+		else return {EFN_NOT,1};
+	case '<':
+		if(s[start+1]=='=')return {EFN_LESSEQUAL,2};
+		else return {EFN_LESS,1};
+	case '>':
+		if(s[start+1]=='=')return {EFN_GREATEREQUAL,2};
+		else return {EFN_GREATER,1};
+	case '&':
+		if(s[start+1]=='&')return {EFN_AND,2};
+		else return {EFN_INVALID,0};
+	case '|':
+		if(s[start+1]=='|')return {EFN_OR,2};
+		else return {EFN_INVALID,0};
+	default:
+		return {EFN_INVALID,0};
+	}
+}*/
+
+
+int Expression::evaluate(unordered_map<string,QueryResult> &vars){
+	;
+}
+
+
+ScriptLine::~ScriptLine(void){
+	if(querystub)delete querystub;
+	if(destvar)delete destvar;
+	if(expr)delete expr;
+	if(block)delete block;
+}
+
+vector<QueryResult> ScriptLine::execute(map<string,Table> &tables,unordered_map<string,QueryResult> &vars){
+	if(type==SLT_QUERYSTUB&&querystub){
+		Query *qu=resolveQueryStub(*querystub,tables,vars);
+		QueryResult res=qu->execute(tables);
+		delete qu;
+		if(destvar)vars[*destvar]=res;
+		return {res};
+	} else if(type==SLT_IF&&expr&&block){
+		if(expr->evaluate(vars))return block->execute(tables,vars);
+	} else if(type==SLT_WHILE&&expr&&block){
+		while(expr->evaluate(vars))return block->execute(tables,vars);
+	} else if(type==SLT_ASSIGNMENT&&destvar&&expr){
+		vars[*destvar]=QueryResult(expr->evaluate(vars));
+		return {};
+	}
+	return {};
+}
+
+
+vector<QueryResult> Script::execute(map<string,Table> &tables){
+	unordered_map<string,QueryResult> vars;
+	return execute(tables,vars);
+}
+vector<QueryResult> Script::execute(map<string,Table> &tables,unordered_map<string,QueryResult> &vars){
+	;
+}
+
+
+Query* resolveQueryStub(const string &stub,map<string,Table> &tables,unordered_map<string,QueryResult> &vars){
+	;
+}