parser: parses an if statement no code generation

This commit parses a if statement following the grammar bellow:

  if boolean_expression {
    n_epressions;
  }

No else neither code generation was implemented.

Signed-off-by: Carlos Maniero <carlos@maniero.me>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/ast.c b/src/ast.c
index 1200e30..5790c05 100644
--- a/src/ast.c
+++ b/src/ast.c
@@ -47,6 +47,10 @@ ast_node_destroy(ast_node_t *node)
     case AST_FUNCTION_DECLARATION:
       ast_node_destroy(node->data.function.body);
       break;
+    case AST_IF_STMT:
+      ast_node_destroy(node->data.if_stmt.condition);
+      ast_node_destroy(node->data.if_stmt.body);
+      break;
     case AST_BLOCK:
       ast_node_destroy_vector(node->data.block.body);
       break;
@@ -140,6 +144,25 @@ ast_node_new_literal_integer(uint32_t number)
 }
 
 ast_node_t *
+ast_node_new_if_stmt(ast_node_t *condition, ast_node_t *body)
+{
+  ast_node_t *node = ast_node_new();
+
+  *node = (ast_node_t){
+    .kind = AST_IF_STMT,
+    .result_type = TYPE_VOID,
+    .data = {
+      .if_stmt = {
+        .condition = condition,
+        .body = body
+      },
+    },
+  };
+
+  return node;
+}
+
+ast_node_t *
 ast_node_new_literal_bool(bool boolean)
 {
   ast_node_t *node = ast_node_new();