65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
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#include "ctx.h"
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#include <ivy/lang/ast.h>
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bool parse_fstring(struct ivy_parser *parser, struct ivy_ast_node **out)
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{
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if (!parse_str_start(parser)) {
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parse_trace(parser, "expected STR_START");
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return false;
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}
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struct ivy_ast_fstring_node *fstring = create_node(IVY_AST_FSTRING);
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bool ok = true;
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while (1) {
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if (parse_str_end(parser)) {
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break;
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}
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struct ivy_token *tok = NULL;
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if (parse_string(parser, &tok)) {
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struct ivy_ast_string_node *string
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= create_node(IVY_AST_STRING);
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string->n_value = tok;
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fx_queue_push_back(
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&fstring->n_value, &string->n_base.n_entry);
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continue;
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}
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if (parse_symbol(parser, IVY_SYM_LEFT_BRACE)) {
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struct ivy_ast_node *expr = NULL;
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if (!parse_expr(parser, EXPR_PARSE_NORMAL, &expr)) {
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parse_trace(
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parser,
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"invalid expression in fstring");
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ok = false;
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break;
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}
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if (!parse_symbol(parser, IVY_SYM_RIGHT_BRACE)) {
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parse_trace(
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parser,
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"expected `}` after expression in "
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"fstring");
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ok = false;
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break;
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}
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fx_queue_push_back(&fstring->n_value, &expr->n_entry);
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continue;
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}
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parse_trace(parser, "unexpected token in fstring");
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ok = false;
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break;
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}
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if (!ok) {
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return ok;
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}
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*out = generic_node(fstring);
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return ok;
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}
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