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fix parse error visualization; fix invalid cases in eval expression parser

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This commit is contained in:
Ryan Fleury
2024-08-20 14:12:40 -07:00
parent c896d05afc
commit 67a719f2c6
4 changed files with 31 additions and 18 deletions
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src/eval/eval_parse.c
+17 -10
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@@ -1191,14 +1191,21 @@ e_parse_expr_from_text_tokens__prec(Arena *arena, String8 text, E_TokenArray *to
it = nested_parse.last_token;
// rjf: build cast-to-U64*, and dereference operators
E_Expr *type = e_push_expr(arena, E_ExprKind_TypeIdent, token_string.str);
type->type_key = e_type_key_cons_ptr(e_type_key_basic(E_TypeKind_U64));
E_Expr *casted = atom;
E_Expr *cast = e_push_expr(arena, E_ExprKind_Cast, token_string.str);
e_expr_push_child(cast, type);
e_expr_push_child(cast, casted);
atom = e_push_expr(arena, E_ExprKind_Deref, token_string.str);
e_expr_push_child(atom, cast);
if(nested_parse.expr == &e_expr_nil)
{
e_msgf(arena, &result.msgs, E_MsgKind_MalformedInput, token_string.str, "Expected expression following `[`.");
}
else
{
E_Expr *type = e_push_expr(arena, E_ExprKind_TypeIdent, token_string.str);
type->type_key = e_type_key_cons_ptr(e_type_key_basic(E_TypeKind_U64));
E_Expr *casted = atom;
E_Expr *cast = e_push_expr(arena, E_ExprKind_Cast, token_string.str);
e_expr_push_child(cast, type);
e_expr_push_child(cast, casted);
atom = e_push_expr(arena, E_ExprKind_Deref, token_string.str);
e_expr_push_child(atom, cast);
}
// rjf: expect ]
E_Token close_paren_maybe = e_token_at_it(it, tokens);
@@ -1814,7 +1821,7 @@ e_parse_expr_from_text_tokens__prec(Arena *arena, String8 text, E_TokenArray *to
}
//- rjf: upgrade atom w/ previously parsed prefix unaries
if(atom == &e_expr_nil && first_prefix_unary != 0 && first_prefix_unary->cast_expr != 0)
if(atom == &e_expr_nil && first_prefix_unary != 0 && first_prefix_unary->cast_expr != &e_expr_nil)
{
atom = first_prefix_unary->cast_expr;
for(PrefixUnaryNode *prefix_unary = first_prefix_unary->next;
@@ -1830,7 +1837,7 @@ e_parse_expr_from_text_tokens__prec(Arena *arena, String8 text, E_TokenArray *to
e_expr_push_child(atom, rhs);
}
}
else if(atom == 0 && first_prefix_unary != 0)
else if(atom == &e_expr_nil && first_prefix_unary != 0)
{
e_msgf(arena, &result.msgs, E_MsgKind_MalformedInput, last_prefix_unary->location, "Missing expression.");
}