wash/ivy
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

lang: add var keyword for variable declarations

Browse Source 
the var keyword allows greater control over what scope a
particular variable exists in. it clarifies whether a new
variable is being defined or an existing variable is being
assigned to. it will also facilitate the implementation of
global variables.
This commit is contained in:
max 🍓
2025-04-15 11:02:47 +01:00
parent abebdb595a
commit e430b7b2f1
9 changed files with 190 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
lang/ast/expr/arith.c
View File

@@ -472,18 +472,31 @@ struct token_parse_result arith_parse_operator(
return PARSE_RESULT(IVY_ERR_BAD_SYNTAX, 0);
}
unsigned short tok_id = 0;
switch (tok->t_type) {
case IVY_TOK_SYMBOL:
tok_id = tok->t_symbol;
state->s_prev_token = tok->t_symbol;
break;
case IVY_TOK_KEYWORD:
tok_id = tok->t_keyword;
state->s_prev_token = tok->t_keyword;
break;
default:
tok_id = tok->t_type;
state->s_prev_token = tok->t_type;
break;
}
if (expr_terminates_at_token(state, tok_id)) {
/* treat this as a statement terminator. */
struct token_parse_result result
= expr_finalise_and_return(ctx, state);
result.r_flags |= PARSE_REPEAT_TOKEN;
return result;
}
struct ivy_ast_node *op = create_operator_node_from_token(tok);
if (!op) {
return PARSE_RESULT(IVY_ERR_BAD_SYNTAX, 0);
@@ -1136,6 +1149,14 @@ struct token_parse_result arith_parse_dot(
return PARSE_RESULT(IVY_ERR_BAD_SYNTAX, 0);
}
if (expr_terminates_at_token(state, IVY_SYM_DOT)) {
/* treat this as a statement terminator. */
struct token_parse_result result
= expr_finalise_and_return(ctx, state);
result.r_flags |= PARSE_REPEAT_TOKEN;
return result;
}
state->s_prev_token = IVY_SYM_DOT;
return expr_finalise_and_return(ctx, state);
}