47 lines
1,017 B
C
47 lines
1,017 B
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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bool
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struct ast *parse_redirection(struct lexer_context *ctx)
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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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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_op, target);
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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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