IF/ELSE

2 files changed, 53 insertions, 5 deletions

diff --git a/src/test_if.tpc b/src/test_if.tpc
new file mode 100644
index 0000000..356061f
--- /dev/null
+++ b/src/test_if.tpc
@@ -0,0 +1,43 @@
+extern printf
+section .data
+format_int db "%d",10,0
+
+section .bss
+section .text
+
+global _start
+print: ;print needs an argument in rax
+push rbp
+mov rbp, rsp
+push rsi
+mov rsi, rax
+mov rdi, format_int
+mov rax, 0
+call printf WRT ..plt
+pop rsi
+pop rbp
+ret
+
+_start:
+push rbp
+mov rbp, rsp
+
+push 0
+push 1
+pop QWORD [rbp - 0] ;bool
+push QWORD [rbp - 0] ;bool
+pop rax
+cmp rax,0
+jz .end_if0
+push QWORD [rbp - 0] ;bool
+pop rax
+call print
+.end_if0
+mov rax,60 
+mov rdi,0 
+syscall 
+;global table
+
+;local table
+;entier: bool, pos: 0     
+
diff --git a/src/tpc.y b/src/tpc.y
index 41fa1d2..340ce5c 100644
--- a/src/tpc.y
+++ b/src/tpc.y
@@ -9,12 +9,13 @@
  *
  *
  *      TODO : 
+ *  ------
  * - Gérer les globales avec .bss (Il faut donc décaler le début du programme après l'analyse des globales pour savoir combien de place réserver.)
  * - Evaluation paresseuse 
  * - Gestion des tableaux
- *
+ * - Tableau des fonctions
  * 
- *
+ * - remettre car conflit pour l'instant-> 
  */
 
 #include <stdio.h>
@@ -26,7 +27,8 @@ void yyerror(char *);
 #define GLOBAL 0
 #define LOCAL 1
 static int status = GLOBAL;
-
+static int num_label = 0;
+static int num_if = 0;
 %}
 
 %union {
@@ -155,11 +157,14 @@ Instr:
   |  READC '(' IDENT ')' ';'      {if(status == GLOBAL) glo_lookup($<ident>3);
                                   else loc_lookup($<ident>3);}
   |  PRINT '(' Exp ')' ';'        {printf("pop rax\ncall print\n");}
-  |  IF '(' Exp ')' Instr
-  |  IF '(' Exp ')' Instr ELSE Instr
+  |  IF '(' Exp IfHandling')' Instr IfEndHandling
+  |  IF '(' Exp IfHandling')' Instr IfEndHandling ELSE Instr IfElseEndHandling
   |  WHILE '(' Exp ')' Instr
   |  '{' SuiteInstr '}'
   ;
+IfHandling: {printf("pop rax\ncmp rax,0\njz .end_if%d\n",$<num>$ = num_if++);};
+IfEndHandling: {printf(".end_if%d\n",$<num>-2);};
+IfElseEndHandling: {printf(".end_if%d\n",$<num>-4);};
 Exp:
      LValue '=' Exp               {if(status == GLOBAL){
                                     $$ = glo_lookup($<ident>1);