mirror of
https://github.com/fish-shell/fish-shell
synced 2024-12-26 04:43:10 +00:00
Beginnings of instance parser work
This commit is contained in:
ridiculousfish
parent
c647bed9d5
commit
0073a93079
3 changed files with 163 additions and 161 deletions
2
exec.cpp
2
exec.cpp
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@ -783,7 +783,7 @@ static io_data_t *io_transmogrify( io_data_t * in )
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*/
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static void internal_exec_helper( const wchar_t *def,
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int block_type,
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enum block_type_t block_type,
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io_data_t *io )
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{
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io_data_t *io_internal = io_transmogrify( io );
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@ -2493,7 +2493,7 @@ static void eval_job( tokenizer *tok )
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}
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int eval( const wchar_t *cmd, io_data_t *io, int block_type )
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int eval( const wchar_t *cmd, io_data_t *io, enum block_type_t block_type )
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{
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size_t forbid_count;
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int code;
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320
parser.h
320
parser.h
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@ -11,6 +11,7 @@
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#include "util.h"
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#include "parser.h"
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#include "event.h"
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#include <vector>
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#define PARSER_TEST_ERROR 1
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#define PARSER_TEST_INCOMPLETE 2
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@ -113,7 +114,7 @@ typedef struct block
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/**
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Types of blocks
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*/
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enum block_type
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enum block_type_t
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{
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WHILE, /**< While loop block */
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FOR, /**< For loop block */
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@ -177,165 +178,166 @@ enum parser_error
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Error while evaluating cmdsubst
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*/
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CMDSUBST_ERROR,
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};
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class parser_t {
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private:
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std::vector<block_t> blocks;
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public:
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/** The current innermost block */
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const block_t ¤t_block(void);
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/** Global event blocks */
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const block_t &global_event_block(void);
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/** Current block level io redirections */
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io_data_t &block_io(void);
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/**
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Evaluate the expressions contained in cmd.
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\param cmd the string to evaluate
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\param io io redirections to perform on all started jobs
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\param block_type The type of block to push on the block stack
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\return 0 on success, 1 otherwise
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*/
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int eval( const wcstring &cmd, io_data_t *io, enum block_type_t block_type );
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/**
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Evaluate line as a list of parameters, i.e. tokenize it and perform parameter expansion and cmdsubst execution on the tokens.
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The output is inserted into output, and should be freed by the caller.
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\param line Line to evaluate
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\param output List to insert output to
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*/
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int eval_args( const wchar_t *line, array_list_t *output );
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/**
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Sets the current evaluation error. This function should only be used by libraries that are called by
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\param ec The new error code
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\param p The character offset at which the error occured
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\param str The printf-style error message filter
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*/
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void error( int ec, int p, const wchar_t *str, ... );
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/**
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Returns a string describing the current parser pisition in the format 'FILENAME (line LINE_NUMBER): LINE'.
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Example:
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init.fish (line 127): ls|grep pancake
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*/
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const wchar_t *current_line();
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/**
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Returns the current line number
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*/
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int get_lineno();
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/**
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Returns the current position in the latest string of the tokenizer.
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*/
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int get_pos();
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/**
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Returns the position where the current job started in the latest string of the tokenizer.
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*/
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int get_job_pos();
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/**
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Set the current position in the latest string of the tokenizer.
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*/
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void set_pos( int p);
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/**
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Get the string currently parsed
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*/
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const wchar_t *get_buffer();
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/**
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Create block of specified type
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*/
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void push_block( int type);
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/**
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Remove the outermost block namespace
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*/
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void pop_block();
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/**
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Return a description of the given blocktype
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*/
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const wchar_t *get_block_desc( int block );
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/**
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Test if the specified string can be parsed, or if more bytes need
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to be read first. The result will have the PARSER_TEST_ERROR bit
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set if there is a syntax error in the code, and the
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PARSER_TEST_INCOMPLETE bit set if the code contains unclosed
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blocks.
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\param buff the text buffer to test
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\param block_level if non-null, the block nesting level will be filled out into this array
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\param out if non-null, any errors in the command will be filled out into this buffer
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\param prefix the prefix string to prepend to each error message written to the \c out buffer
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*/
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int test( const wchar_t * buff, int *block_level, string_buffer_t *out, const wchar_t *prefix );
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/**
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Test if the specified string can be parsed as an argument list,
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e.g. sent to eval_args. The result has the first bit set if the
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string contains errors, and the second bit is set if the string
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contains an unclosed block.
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*/
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int test_args( const wchar_t * buff, string_buffer_t *out, const wchar_t *prefix );
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/**
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Tell the parser that the specified function may not be run if not
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inside of a conditional block. This is to remove some possibilities
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of infinite recursion.
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*/
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void forbid_function( wchar_t *function );
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/**
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Undo last call to parser_forbid_function().
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*/
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void allow_function();
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/**
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Initialize static parser data
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*/
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void init();
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/**
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Destroy static parser data
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*/
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void destroy();
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/**
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This function checks if the specified string is a help option.
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\param s the string to test
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\param min_match is the minimum number of characters that must match in a long style option, i.e. the longest common prefix between --help and any other option. If less than 3, 3 will be assumed.
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*/
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int is_help( wchar_t *s, int min_match );
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/**
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Returns the file currently evaluated by the parser. This can be
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different than reader_current_filename, e.g. if we are evaulating a
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function defined in a different file than the one curently read.
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*/
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const wchar_t *current_filename();
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/**
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Write a stack trace starting at the specified block to the specified string_buffer_t
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*/
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void stack_trace( block_t *b, string_buffer_t *buff);
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int get_block_type( const wchar_t *cmd );
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const wchar_t *get_block_command( int type );
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}
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;
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/** The current innermost block */
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extern block_t *current_block;
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/** Global event blocks */
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extern event_block_t *global_event_block;
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/**
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Current block level io redirections
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*/
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extern io_data_t *block_io;
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/**
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Evaluate the expressions contained in cmd.
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\param cmd the string to evaluate
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\param io io redirections to perform on all started jobs
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\param block_type The type of block to push on the block stack
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\return 0 on success, 1 otherwise
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*/
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int eval( const wchar_t *cmd, io_data_t *io, int block_type );
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/**
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Evaluate line as a list of parameters, i.e. tokenize it and perform parameter expansion and cmdsubst execution on the tokens.
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The output is inserted into output, and should be freed by the caller.
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\param line Line to evaluate
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\param output List to insert output to
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*/
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int eval_args( const wchar_t *line,
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array_list_t *output );
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/**
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Sets the current evaluation error. This function should only be used by libraries that are called by
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\param ec The new error code
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\param p The character offset at which the error occured
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\param str The printf-style error message filter
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*/
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void error( int ec, int p, const wchar_t *str, ... );
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/**
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Returns a string describing the current parser pisition in the format 'FILENAME (line LINE_NUMBER): LINE'.
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Example:
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init.fish (line 127): ls|grep pancake
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*/
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const wchar_t *parser_current_line();
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/**
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Returns the current line number
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*/
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int parser_get_lineno();
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/**
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Returns the current position in the latest string of the tokenizer.
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*/
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int parser_get_pos();
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/**
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Returns the position where the current job started in the latest string of the tokenizer.
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*/
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int parser_get_job_pos();
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/**
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Set the current position in the latest string of the tokenizer.
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*/
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void parser_set_pos( int p);
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/**
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Get the string currently parsed
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*/
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const wchar_t *parser_get_buffer();
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/**
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Create block of specified type
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*/
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void parser_push_block( int type);
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/**
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Remove the outermost block namespace
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*/
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void parser_pop_block();
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/**
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Return a description of the given blocktype
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*/
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const wchar_t *parser_get_block_desc( int block );
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/**
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Test if the specified string can be parsed, or if more bytes need
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to be read first. The result will have the PARSER_TEST_ERROR bit
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set if there is a syntax error in the code, and the
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PARSER_TEST_INCOMPLETE bit set if the code contains unclosed
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blocks.
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\param buff the text buffer to test
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\param block_level if non-null, the block nesting level will be filled out into this array
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\param out if non-null, any errors in the command will be filled out into this buffer
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\param prefix the prefix string to prepend to each error message written to the \c out buffer
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*/
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int parser_test( const wchar_t * buff, int *block_level, string_buffer_t *out, const wchar_t *prefix );
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/**
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Test if the specified string can be parsed as an argument list,
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e.g. sent to eval_args. The result has the first bit set if the
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string contains errors, and the second bit is set if the string
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contains an unclosed block.
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*/
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int parser_test_args( const wchar_t * buff, string_buffer_t *out, const wchar_t *prefix );
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/**
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Tell the parser that the specified function may not be run if not
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inside of a conditional block. This is to remove some possibilities
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of infinite recursion.
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*/
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void parser_forbid_function( wchar_t *function );
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/**
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Undo last call to parser_forbid_function().
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*/
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void parser_allow_function();
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/**
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Initialize static parser data
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*/
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void parser_init();
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/**
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Destroy static parser data
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*/
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void parser_destroy();
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/**
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This function checks if the specified string is a help option.
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\param s the string to test
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\param min_match is the minimum number of characters that must match in a long style option, i.e. the longest common prefix between --help and any other option. If less than 3, 3 will be assumed.
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*/
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int parser_is_help( wchar_t *s, int min_match );
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/**
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Returns the file currently evaluated by the parser. This can be
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different than reader_current_filename, e.g. if we are evaulating a
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function defined in a different file than the one curently read.
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*/
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const wchar_t *parser_current_filename();
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/**
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Write a stack trace starting at the specified block to the specified string_buffer_t
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*/
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void parser_stack_trace( block_t *b, string_buffer_t *buff);
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int parser_get_block_type( const wchar_t *cmd );
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const wchar_t *parser_get_block_command( int type );
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#endif
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