116 lines
3.0 KiB
C
116 lines
3.0 KiB
C
#include "block.h"
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#include "ctx.h"
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#include "iterate.h"
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#include "node.h"
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#include <blue/object/string.h>
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#include <ivy/lang/lex.h>
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static struct token_parse_result parse_end(
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struct ivy_parser *ctx, struct ivy_token *tok)
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{
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struct block_parser_state *state
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= parser_get_state(ctx, struct block_parser_state);
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struct ivy_ast_block_node *node
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= (struct ivy_ast_block_node *)(state->s_base.s_node);
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int flags = 0;
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if (state->s_terminator == IVY_KW_END) {
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flags = PARSE_REPEAT_TOKEN;
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}
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parser_pop_state(ctx, STATE_ADD_NODE_TO_PARENT);
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return PARSE_RESULT(IVY_OK, flags);
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}
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static struct token_parse_result parse_else(
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struct ivy_parser *ctx, struct ivy_token *tok)
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{
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struct block_parser_state *state
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= parser_get_state(ctx, struct block_parser_state);
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struct ivy_ast_block_node *node
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= (struct ivy_ast_block_node *)(state->s_base.s_node);
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parser_pop_state(ctx, STATE_ADD_NODE_TO_PARENT);
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return PARSE_RESULT(IVY_OK, PARSE_REPEAT_TOKEN);
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}
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static struct token_parse_result parse_symbol(
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struct ivy_parser *ctx, struct ivy_token *tok)
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{
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struct block_parser_state *state
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= parser_get_state(ctx, struct block_parser_state);
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struct ivy_ast_block_node *node
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= (struct ivy_ast_block_node *)(state->s_base.s_node);
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if (state->s_terminator == tok->t_symbol) {
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parser_pop_state(ctx, STATE_ADD_NODE_TO_PARENT);
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return PARSE_RESULT(IVY_OK, PARSE_REPEAT_TOKEN);
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}
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return PARSE_RESULT(IVY_ERR_BAD_SYNTAX, 0);
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}
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static struct token_parse_result parse_expr_begin(
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struct ivy_parser *ctx, struct ivy_token *tok)
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{
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struct block_parser_state *state
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= parser_get_state(ctx, struct block_parser_state);
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struct ivy_ast_block_node *node
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= (struct ivy_ast_block_node *)(state->s_base.s_node);
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parser_push_state(ctx, IVY_AST_EXPR, 0);
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return PARSE_RESULT(IVY_OK, PARSE_REPEAT_TOKEN);
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}
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static enum ivy_status add_child(
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struct parser_state *parent, struct ivy_ast_node *child)
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{
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struct ivy_ast_block_node *block
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= (struct ivy_ast_block_node *)parent->s_node;
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b_queue_push_back(&block->n_expr, &child->n_entry);
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return IVY_OK;
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}
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static void init_state(struct ivy_parser *ctx, struct parser_state *sp, uintptr_t arg)
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{
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struct class_parser_state *state = (struct class_parser_state *)sp;
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}
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static void collect_children(
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struct ivy_ast_node *node, struct ivy_ast_node_iterator *iterator)
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{
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struct ivy_ast_block_node *block = (struct ivy_ast_block_node *)node;
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b_queue_iterator it = {0};
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b_queue_foreach (&it, &block->n_expr) {
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struct ivy_ast_node *expr
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= b_unbox(struct ivy_ast_node, it.entry, n_entry);
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ast_node_iterator_enqueue_node(iterator, node, expr);
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}
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}
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struct ast_node_type block_node_ops = {
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.n_add_child = add_child,
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.n_init_state = init_state,
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.n_collect_children = collect_children,
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.n_state_size = sizeof(struct block_parser_state),
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.n_node_size = sizeof(struct ivy_ast_block_node),
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.n_keyword_parsers = {
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KW_PARSER(END, parse_end),
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KW_PARSER(ELSE, parse_else),
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},
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.n_symbol_parsers = {
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SYM_PARSER_FALLBACK(parse_symbol),
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},
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.n_expr_parser = {
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.expr_begin = parse_expr_begin,
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},
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};
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