lorenzo/lc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

implemented structure parsing

Browse source
This commit is contained in:
Lorenzo Torres 2025-12-03 09:59:09 +01:00
parent d0d750f059
commit 664affc6d3
4 changed files with 119 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

97
parser.c
View file

@ -676,6 +676,99 @@ static ast_node *parse_while(parser *p)
return node;
}
static ast_node *parse_struct(parser *p);
static member *parse_member(parser *p)
{
ast_node *type = NULL;
if (match(p, TOKEN_STRUCT)) {
type = parse_struct(p);
}
if (!type) {
type = parse_factor(p);
if (!type) {
error(p, "expected struct definition or identifier.");
return NULL;
}
if (type->type != NODE_IDENTIFIER) {
error(p, "expected struct definition or identifier.");
return NULL;
}
}
if (!match_peek(p, TOKEN_IDENTIFIER)) {
error(p, "expected identifier.");
return NULL;
}
member *m = arena_alloc(p->allocator, sizeof(member));
m->type = type;
m->name = peek(p)->lexeme;
m->name_len = peek(p)->lexeme_len;
advance(p);
return m;
}
static ast_node *parse_struct(parser *p)
{
ast_node *structure = arena_alloc(p->allocator, sizeof(ast_node));
structure->type = NODE_STRUCT;
if (match_peek(p, TOKEN_IDENTIFIER)) {
/* Named structure */
structure->expr.structure.name = peek(p)->lexeme;
structure->expr.structure.name_len = peek(p)->lexeme_len;
advance(p);
} else if (!match_peek(p, TOKEN_LCURLY)) {
error(p, "expected identifier or `{`.");
return NULL;
} else {
structure->expr.structure.name = NULL;
structure->expr.structure.name_len = 0;
}
if (!match(p, TOKEN_LCURLY)) {
error(p, "expected `{`.");
return NULL;
}
member *prev = parse_member(p);
member *head = prev;
structure->expr.structure.members = head;
if (!prev) {
error(p, "invalid struct definition. Structs should contain at least 1 member.");
return NULL;
}
if (!match(p, TOKEN_COMMA)) {
if (!match(p, TOKEN_RCURLY)) {
error(p, "expected `,`.");
return NULL;
} else {
return structure;
}
}
while (!match(p, TOKEN_RCURLY)) {
member *current = parse_member(p);
if (!current) {
error(p, "expected member definition.");
return NULL;
}
prev->next = current;
if (!match(p, TOKEN_COMMA)) {
if (!match_peek(p, TOKEN_RCURLY)) {
error(p, "expected `,`.");
return NULL;
}
}
prev = current;
}
return structure;
}
static ast_node *parse_statement(parser *p)
{
if (match(p, TOKEN_BREAK))
@ -802,6 +895,10 @@ static ast_node *parse_statement(parser *p)
return node;
}
else if (match(p, TOKEN_STRUCT))
{
return parse_struct(p);
}
else
{
ast_node *expr = parse_expression(p);