[poincare] Add YYSTYPE declaration in the lexer

poincare/Makefile

@@ -5,6 +5,9 @@ SFLAGS += -Ipoincare/include
 objs += $(addprefix poincare/src/,\
   addition.o\
   arithmetic.o\
+  expression_lexer.o\
+  expression_parser.o\
+  layout_helper.o\
   matrix_complex.o\
   multiplication.o\
   power.o\

poincare/src/expression.cpp

@@ -10,8 +10,8 @@
 #include <ion.h>
 #include <cmath>
 #include <float.h>
-//#include "expression_parser.hpp"
-//#include "expression_lexer.hpp"
+#include "expression_parser.hpp"
+#include "expression_lexer.hpp"
 
 int poincare_expression_yyparse(Poincare::Expression * expressionOutput);
 

poincare/src/expression_lexer.l

@@ -40,6 +40,19 @@
  * requires feature. */
 #include <cmath>
 #include <poincare.h>
+
+struct OurNodeValue{
+    Poincare::Expression expression;
+    Poincare::Symbol symbol;
+    struct {
+      char * address;
+      int length;
+    } string;
+    char character;
+};
+#define YYSTYPE OurNodeValue
+
+
 #include "expression_parser.hpp"
 using namespace Poincare;
 

poincare/src/expression_parser.y

@@ -8,15 +8,23 @@
 %{
 #include <poincare.h>
 
-struct YYSTYPE {
-  Poincare::Expression expression;
-  Poincare::Symbol symbol;
-  struct {
-    char * address;
-    int length;
-  } string;
-  char character;
+/* TODO Comment
+  Usually, YYSTYPE is defined as the union of the objects it might be. Here, these objects are non-trivial, as some have comple constructors and destructors
+  struct et pas union car constructeurs/compliqués donc si union on ne sait pas comment appeler
+ on a besoin de mettre la meme chose dans le lexer car on arrive pas à mettre la struc dans expression_parser.hpp qui est inclus dans expression_lexer normalement pour ça
+
+
+*/
+struct OurNodeValue{
+    Poincare::Expression expression;
+    Poincare::Symbol symbol;
+    struct {
+      char * address;
+      int length;
+    } string;
+    char character;
 };
+#define YYSTYPE OurNodeValue
 
 
 /* The lexer manipulates tokens defined by the parser, so we need the following