From 8c8fc8cc30b38ef00d606a4991b655df97a52fb6 Mon Sep 17 00:00:00 2001 From: Carlos Maniero Date: Mon, 8 May 2023 23:53:44 -0300 Subject: parser: create a block node type MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Since the next step to pipa programming language is about having control flow statements we could benefit ourselves by having a block node to control scope. Now, functions has a block node, instead of an vector as body. As you can see through the ast-dump: FunctionDecl name='main' └─ body: └─ Block └─ ReturnStmt └─ Literal type=i32 value='69' This same node kind can be used for parsing if, for and while blocks. I could use ast_block_t as body for functions but instead, I opted to use an ast_node_t. This brings the flexibility to, in the future, having another function body kinds, such as arrow functions if we want to: fn add(a: i32, b: i32): i32 => a + b; Signed-off-by: Carlos Maniero --- src/ast.c | 24 ++++++++++++++++++++++-- 1 file changed, 22 insertions(+), 2 deletions(-) (limited to 'src/ast.c') diff --git a/src/ast.c b/src/ast.c index 4fd5a3f..1200e30 100644 --- a/src/ast.c +++ b/src/ast.c @@ -45,7 +45,10 @@ ast_node_destroy(ast_node_t *node) { switch (node->kind) { case AST_FUNCTION_DECLARATION: - ast_node_destroy_vector(node->data.function.body); + ast_node_destroy(node->data.function.body); + break; + case AST_BLOCK: + ast_node_destroy_vector(node->data.block.body); break; case AST_BINARY_OPERATION: ast_node_destroy(node->data.binary_operation.left); @@ -82,7 +85,7 @@ ast_node_new_return_stmt(ast_node_t *argument) } ast_node_t * -ast_node_new_function_declaration(string_view_t function_name, type_t return_type, vector_t *body) +ast_node_new_function_declaration(string_view_t function_name, type_t return_type, ast_node_t *body) { ast_node_t *node = ast_node_new(); @@ -100,6 +103,23 @@ ast_node_new_function_declaration(string_view_t function_name, type_t return_typ return node; } +ast_node_t * +ast_node_new_block(vector_t *body) +{ + ast_node_t *node = ast_node_new(); + + *node = (ast_node_t){ + .kind = AST_BLOCK, + .data = { + .block = { + .body = body, + } + }, + }; + + return node; +} + ast_node_t * ast_node_new_literal_integer(uint32_t number) { -- cgit v1.2.3