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, 11 insertions, 0 deletions

diff --git a/src/ast.h b/src/ast.h
index 1637173..b2c565c 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -111,6 +111,12 @@ typedef struct ast_variable_assignment_t
   ast_node_t *expression;
 } ast_variable_assignment_t;
 
+typedef struct ast_if_stmt_t
+{
+  ast_node_t *condition;
+  ast_node_t *body;
+} ast_if_stmt_t;
+
 typedef enum
 {
   AST_BINARY_OPERATION,
@@ -118,6 +124,7 @@ typedef enum
   AST_FUNCTION_DECLARATION,
   AST_LITERAL,
   AST_RETURN_STMT,
+  AST_IF_STMT,
   AST_UNKOWN_NODE,
   AST_VARIABLE_DECLARATION,
   AST_VARIABLE_ASSIGNMENT,
@@ -130,6 +137,7 @@ typedef union
   ast_function_declaration_t function;
   ast_literal_t literal;
   ast_block_t block;
+  ast_if_stmt_t if_stmt;
   ast_return_stmt_t return_stmt;
   ast_variable_declaration_t variable_declaration;
   ast_variable_assignment_t variable_assignment;
@@ -185,4 +193,7 @@ ast_node_new_variable(ast_identifier_t *identifier, type_t result_type);
 ast_node_t *
 ast_node_new_variable_assignment(ast_identifier_t *identifier, ast_node_t *expression);
 
+ast_node_t *
+ast_node_new_if_stmt(ast_node_t *condition, ast_node_t *body);
+
 #endif /* AST_H */