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preliminary work on sea of nodes based intermediate representation.

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This commit is contained in:
Lorenzo Torres 2025-12-07 16:48:48 +01:00
parent 989a32fa7b
commit 849e0b6863
13 changed files with 918 additions and 58 deletions
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34
parser.c
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@ -367,9 +367,21 @@ ast_node *parse_term(parser *p)
{
ast_node *left = parse_unary(p);
while (match_peek(p, TOKEN_STAR) || match_peek(p, TOKEN_SLASH))
{
binary_op op = peek(p)->type == TOKEN_STAR ? OP_MUL : OP_DIV;
while (match_peek(p, TOKEN_STAR) || match_peek(p, TOKEN_SLASH) || match_peek(p, TOKEN_PERC)) {
binary_op op;
switch (peek(p)->type) {
case TOKEN_STAR:
op = OP_MUL;
break;
case TOKEN_SLASH:
op = OP_DIV;
break;
case TOKEN_PERC:
op = OP_MOD;
break;
default:
continue;
}
advance(p);
ast_node *right = parse_factor(p);
ast_node *node = arena_alloc(p->allocator, sizeof(ast_node));
@ -561,6 +573,9 @@ ast_node *parse_expression(parser *p)
binary_op op;
switch (p->tokens->type)
{
case TOKEN_ARROW:
op = OP_ASSIGN_PTR;
break;
case TOKEN_EQ:
op = OP_ASSIGN;
break;
@ -854,8 +869,12 @@ static ast_node *parse_if(parser *p)
ast_node *node = arena_alloc(p->allocator, sizeof(ast_node));
node->type = NODE_IF;
node->position = p->previous->position;
node->expr.whle.body = body;
node->expr.whle.condition = condition;
node->expr.if_stmt.body = body;
node->expr.if_stmt.condition = condition;
if (match(p, TOKEN_ELSE)) {
body = parse_compound(p);
node->expr.if_stmt.otherwise = body;
}
return node;
}
@ -1302,11 +1321,6 @@ static void parse(parser *p)
ast_node *tail = p->ast;
ast_node *expr = parse_statement(p);
while (expr) {
if (expr->type != NODE_FUNCTION && expr->type != NODE_VAR_DECL && expr->type != NODE_IMPORT &&
expr->type != NODE_STRUCT && expr->type != NODE_UNION && expr->type != NODE_ENUM) {
error(p, "expected function, struct, enum, union, global variable or import statement.");
return;
}
tail->expr.unit_node.next = arena_alloc(p->allocator, sizeof(ast_node));
tail->expr.unit_node.next->expr.unit_node.expr = expr;
tail = tail->expr.unit_node.next;