Merge pull request #2693 from fernewelten/NC_DynamicCast

New compiler: `as VARTYPE` clause in expressions

Author: ivan-mogilko

Compiler/script2/cc_internallist.h

@@ -38,8 +38,8 @@ class SectionList
         : _sections(sections)
         , _off2sec(off2sec)
     {}
-    SectionList(const std::vector<std::string> &&sections,
-                const std::map<size_t, size_t> &&off2sec)
+    SectionList(std::vector<std::string> &&sections,
+                std::map<size_t, size_t> &&off2sec)
         : _sections(std::move(sections))
         , _off2sec(std::move(off2sec))
     {}

Compiler/script2/cc_symboltable.cpp

@@ -176,7 +176,8 @@ AGS::SymbolTable::SymbolTable()
     // Operators
     AddOperator(kKW_And, "&&", 118, kNoPrio, true, SCMD_AND);
     // No compile time functions defined here; those are done with special logic.
-
+    AddOperator(kKW_As, "as", 130, kNoPrio, false, kNoOpcode);
+    // No compile time functions defined here; those are done with special logic.
     AddOperator(kKW_BitAnd, "&", 109, kNoPrio, false, SCMD_BITAND);
     OperatorCtFunctions(
         kKW_BitAnd,
@@ -702,12 +703,12 @@ void AGS::SymbolTable::GetComponentsOfStruct(Symbol strct, std::vector<Symbol> &
 
     // Collect the ancestors of 'struct', i.e., those structs that 'struct' extends
     std::vector<Symbol> ancestors = {};
-    while(kKW_NoSymbol != strct)
+    while (kKW_NoSymbol != strct)
     {
         ancestors.push_back(strct);
         strct = entries.at(strct).VartypeD->Parent;
     }
-   
+
     for (auto ancestors_it = ancestors.crbegin(); ancestors_it != ancestors.crend(); ancestors_it++)
     {
         auto const &components = entries.at(*ancestors_it).VartypeD->Components;

Compiler/script2/cc_symboltable.h

@@ -136,6 +136,7 @@ enum Predefined : Symbol
     kKW_Void,           // "void"
 
     kKW_And,            // "&&"
+    kKW_As,             // "as"
     kKW_BitAnd,         // "&"
     kKW_BitNeg,         // "~"
     kKW_BitOr,          // "|"