65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
#include "grammar_advanced.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "grammar_basic.h"
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static enum ast_redir_type redir_tok_to_ast_type(enum token_type tok_type)
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{
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switch(tok_type)
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{
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case TOKEN_REDIR_LEFT:
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return AST_REDIR_TYPE_LESS;
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case TOKEN_REDIR_RIGHT:
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return AST_REDIR_TYPE_GREAT;
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// TODO finish this
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default:
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return AST_REDIR_TYPE_NULL;
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}
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}
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struct ast *parse_redirection(struct lexer_context *ctx)
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{
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(void)ctx;
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return NULL;
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/*
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struct token *token = PEEK_TOKEN();
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int io_number = -1;
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if (token->type == TOKEN_IONUMBER)
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{
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io_number = atoi(token->data);
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POP_TOKEN();
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token = PEEK_TOKEN();
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}
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if (!is_token_redir(token))
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{
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perror("Syntax error: expected a redirection token but got something "
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"else");
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return NULL;
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}
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// char *redir_op = strdup(token->data);
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enum ast_redir_type redir_type = redir_tok_to_ast_type(token->type);
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POP_TOKEN();
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token = PEEK_TOKEN();
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if (token->type != TOKEN_WORD)
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{
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perror("Syntax error: expected a word after redirection");
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// free(redir_op);
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return NULL;
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}
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char *target = strdup(token->data);
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POP_TOKEN();
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return ast_create_redir(io_number, redir_type, target);
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*/
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}
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struct ast *parse_prefix(struct lexer_context *ctx)
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{
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return parse_redirection(ctx);
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}
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