finish function calls and lvalue

1 files changed, 42 insertions, 0 deletions

diff --git a/node/ExprNode.hh b/node/ExprNode.hh
index ac62975..c80d955 100644
--- a/node/ExprNode.hh
+++ b/node/ExprNode.hh
@@ -1,6 +1,8 @@
 #ifndef PCC_EXPRNODE_H
 #define PCC_EXPRNODE_H
 
+#include <list>
+
 #include "BaseNode.hh"
 #include "Type.hh"
 
@@ -38,6 +40,46 @@ class UnaryExprNode : public ExprNode {
     std::shared_ptr<ExprNode> value_;
 };
 
+// when accessing lvalues, we need an extra load instruction to actually load
+// the value from the pointer, this is like clang's 'LValueToRValue' node below.
+// c++: int x=7; int y=x;
+//  `-CompoundStmt 0xd28720 <col:9, line:9:1>
+//    |-DeclStmt 0xd28638 <line:7:2, col:9>
+//    | `-VarDecl 0xd285b0 <col:2, col:8> col:6 used x 'int' cinit
+//    |   `-IntegerLiteral 0xd28618 <col:8> 'int' 7
+//    `-DeclStmt 0xd28708 <line:8:2, col:9>
+//      `-VarDecl 0xd28668 <col:2, col:8> col:6 y 'int' cinit
+//        `-ImplicitCastExpr 0xd286f0 <col:8> 'int' <LValueToRValue>
+//          `-DeclRefExpr 0xd286d0 <col:8> 'int' lvalue Var 0xd285b0 'x' 'int'
+class L2RCastingNode : public ExprNode {
+  public:
+    L2RCastingNode(Context* context, std::shared_ptr<ExprNode> lvalue);
+    virtual Value CodeGen() override;
+
+  protected:
+    std::shared_ptr<ExprNode> lvalue_;
+};
+
+class IdentifierNode : public ExprNode {
+  public:
+    IdentifierNode(Context* context, const std::string& name);
+    virtual Value CodeGen() override;
+
+  protected:
+    std::string name_;
+};
+
+class FunctionCallNode : public ExprNode {
+  public:
+    FunctionCallNode(Context* context, const std::string& name,
+                     std::list<std::shared_ptr<ExprNode>> args);
+    virtual Value CodeGen() override;
+
+  protected:
+    std::string name_;
+    std::list<std::shared_ptr<ExprNode>> args_;
+};
+
 } // namespace pcc
 
 #endif // !PCC_EXPRNODE_H