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Fix line number reporting in new parser

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This commit is contained in:
ridiculousfish 2014-03-16 16:45:00 -07:00
parent 8ec73b2dd4
commit 3cfdc6d126
11 changed files with 177 additions and 33 deletions
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5
builtin.cpp
View File

@ -1729,7 +1729,7 @@ static int builtin_pwd(parser_t &parser, wchar_t **argv)
}
/** Adds a function to the function set. It calls into function.cpp to perform any heavy lifting. */
int define_function(parser_t &parser, const wcstring_list_t &c_args, const wcstring &contents, wcstring *out_err)
int define_function(parser_t &parser, const wcstring_list_t &c_args, const wcstring &contents, int definition_line_offset, wcstring *out_err)
{
assert(out_err != NULL);
@ -2027,8 +2027,7 @@ int define_function(parser_t &parser, const wcstring_list_t &c_args, const wcstr
d.definition = contents.c_str();
// TODO: fix def_offset inside function_add
function_add(d, parser);
function_add(d, parser, definition_line_offset);
}
return res;

2
builtin.h
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@ -179,7 +179,7 @@ const wchar_t *builtin_complete_get_temporary_buffer();
wcstring builtin_help_get(parser_t &parser, const wchar_t *cmd);
/** Defines a function, like builtin_function. Returns 0 on success. args should NOT contain 'function' as the first argument. */
int define_function(parser_t &parser, const wcstring_list_t &args, const wcstring &contents, wcstring *out_err);
int define_function(parser_t &parser, const wcstring_list_t &args, const wcstring &contents, int definition_line_offset, wcstring *out_err);
#endif

5
common.cpp
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@ -713,6 +713,11 @@ void debug(int level, const char *msg, ...)
errno = errno_old;
}
void print_stderr(const wcstring &str)
{
fprintf(stderr, "%ls\n", str.c_str());
}
void debug_safe(int level, const char *msg, const char *param1, const char *param2, const char *param3, const char *param4, const char *param5, const char *param6, const char *param7, const char *param8, const char *param9, const char *param10, const char *param11, const char *param12)
{

3
common.h
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@ -732,6 +732,9 @@ ssize_t read_loop(int fd, void *buff, size_t count);
void debug(int level, const char *msg, ...);
void debug(int level, const wchar_t *msg, ...);
/** Writes a string to stderr, followed by a newline */
void print_stderr(const wcstring &str);
/**
Replace special characters with backslash escape sequences. Newline is
replaced with \n, etc.

3
exec.cpp
View File

@ -1430,8 +1430,7 @@ void exec_job(parser_t &parser, job_t *j)
if (g_log_forks)
{
const wchar_t *file = reader_current_filename();
const wchar_t *func = parser_t::principal_parser().is_function();
printf("fork #%d: forking for '%s' in '%ls:%ls'\n", g_fork_count, actual_cmd, file ? file : L"", func ? func : L"?");
printf("fork #%d: forking for '%s' in '%ls'\n", g_fork_count, actual_cmd, file ? file : L"");
fprintf(stderr, "IO chain for %s:\n", actual_cmd);
io_print(process_net_io_chain);

10
function.cpp
View File

@ -175,7 +175,7 @@ function_info_t::function_info_t(const function_info_t &data, const wchar_t *fil
{
}
void function_add(const function_data_t &data, const parser_t &parser)
void function_add(const function_data_t &data, const parser_t &parser, int definition_line_offset)
{
ASSERT_IS_MAIN_THREAD();
@ -189,13 +189,7 @@ void function_add(const function_data_t &data, const parser_t &parser)
/* Create and store a new function */
const wchar_t *filename = reader_current_filename();
int def_offset = -1;
if (parser.current_block() != NULL)
{
def_offset = parser.line_number_of_character_at_offset(parser.current_block()->tok_pos);
}
const function_map_t::value_type new_pair(data.name, function_info_t(data, filename, def_offset, is_autoload));
const function_map_t::value_type new_pair(data.name, function_info_t(data, filename, definition_line_offset, is_autoload));
loaded_functions.insert(new_pair);
/* Add event handlers */

4
function.h
View File

@ -92,8 +92,8 @@ public:
*/
void function_init();
/** Add a function. */
void function_add(const function_data_t &data, const parser_t &parser);
/** Add a function. definition_line_offset is the line number of the function's definition within its source file */
void function_add(const function_data_t &data, const parser_t &parser, int definition_line_offset = 0);
/** Removes a function from our internal table, returning true if it was found and false if not */
bool function_remove_ignore_autoload(const wcstring &name);

27
parse_execution.cpp
View File

@ -381,8 +381,9 @@ parse_execution_result_t parse_execution_context_t::run_function_statement(const
if (result == parse_execution_success)
{
const wcstring contents_str = get_source(contents);
int definition_line_offset = this->line_offset_of_node_at_offset(this->get_offset(contents));
wcstring error_str;
int err = define_function(*parser, argument_list, contents_str, &error_str);
int err = define_function(*parser, argument_list, contents_str, definition_line_offset, &error_str);
proc_set_last_status(err);
if (! error_str.empty())
@ -1523,29 +1524,29 @@ parse_execution_result_t parse_execution_context_t::eval_node_at_offset(node_off
return status;
}
int parse_execution_context_t::get_current_line_number()
int parse_execution_context_t::line_offset_of_node_at_offset(node_offset_t requested_index)
{
/* If we're not executing anything, return -1 */
if (this->executing_node_idx == NODE_OFFSET_INVALID)
if (requested_index == NODE_OFFSET_INVALID)
{
return -1;
}
/* If for some reason we're executing a node without source, return -1 */
const parse_node_t &node = tree.at(this->executing_node_idx);
const parse_node_t &node = tree.at(requested_index);
if (! node.has_source())
{
return -1;
}
/* Count the number of newlines, leveraging our cache */
const size_t offset = tree.at(this->executing_node_idx).source_start;
const size_t offset = tree.at(requested_index).source_start;
assert(offset <= src.size());
/* Easy hack to handle 0 */
if (offset == 0)
{
return 1;
return 0;
}
/* We want to return (one plus) the number of newlines at offsets less than the given offset. cached_lineno_count is the number of newlines at indexes less than cached_lineno_offset. */
@ -1575,5 +1576,17 @@ int parse_execution_context_t::get_current_line_number()
}
cached_lineno_offset = offset;
}
return cached_lineno_count + 1;
return cached_lineno_count;
}
int parse_execution_context_t::get_current_line_number()
{
int line_number = -1;
int line_offset = this->line_offset_of_node_at_offset(this->executing_node_idx);
if (line_offset >= 0)
{
/* The offset is 0 based; the number is 1 based */
line_number = line_offset + 1;
}
return line_number;
}

5
parse_execution.h
View File

@ -107,13 +107,16 @@ private:
parse_execution_result_t run_job_list(const parse_node_t &job_list_node, const block_t *associated_block);
parse_execution_result_t populate_job_from_job_node(job_t *j, const parse_node_t &job_node, const block_t *associated_block);
/* Returns the line number of the node at the given index, indexed from 0. Not const since it touches cached_lineno_offset */
int line_offset_of_node_at_offset(node_offset_t idx);
public:
parse_execution_context_t(const parse_node_tree_t &t, const wcstring &s, parser_t *p, int initial_eval_level);
/* Returns the current eval level */
int current_eval_level() const { return eval_level; }
/* Returns the current line number. Not const since it touches cached_lineno_offset */
/* Returns the current line number, indexed from 1. Not const since it touches cached_lineno_offset */
int get_current_line_number();
/* Start executing at the given node offset. Returns 0 if there was no error, 1 if there was an error */

129
parser.cpp
View File

@ -242,7 +242,12 @@ void parser_t::push_block(block_t *new_current)
{
const enum block_type_t type = new_current->type();
new_current->src_lineno = parser_t::get_lineno();
new_current->src_filename = parser_t::current_filename()?intern(parser_t::current_filename()):0;
const wchar_t *filename = parser_t::current_filename();
if (filename != NULL)
{
new_current->src_filename = intern(filename);
}
const block_t *old_current = this->current_block();
if (old_current && old_current->skip)
@ -325,6 +330,27 @@ const wchar_t *parser_t::get_block_desc(int block) const
return _(UNKNOWN_BLOCK);
}
wcstring parser_t::block_stack_description() const
{
wcstring result;
size_t idx = this->block_count();
size_t spaces = 0;
while (idx--)
{
if (spaces > 0)
{
result.push_back(L'\n');
}
for (size_t j=0; j < spaces; j++)
{
result.push_back(L' ');
}
result.append(this->block_at_index(idx)->description());
spaces++;
}
return result;
}
const block_t *parser_t::block_at_index(size_t idx) const
{
/* 0 corresponds to the last element in our vector */
@ -732,6 +758,11 @@ const wchar_t *parser_t::is_function() const
result = fb->name.c_str();
break;
}
else if (b->type() == SOURCE)
{
/* If a function sources a file, obviously that function's offset doesn't contribute */
break;
}
}
return result;
}
@ -743,6 +774,14 @@ int parser_t::get_lineno() const
if (! execution_contexts.empty())
{
lineno = execution_contexts.back()->get_current_line_number();
/* If we are executing a function, we have to add in its offset */
const wchar_t *function_name = is_function();
if (function_name != NULL)
{
lineno += function_get_definition_offset(function_name);
}
}
return lineno;
}
@ -764,12 +803,16 @@ const wchar_t *parser_t::current_filename() const
for (size_t i=0; i < this->block_count(); i++)
{
const block_t *b = this->block_at_index(i);
/* Note that we deliberately skip FUNCTION_CALL_NO_SHADOW here, because the only such functions in wide use are '.' and eval, and we don't want to report those */
if (b->type() == FUNCTION_CALL)
if (b->type() == FUNCTION_CALL || b->type() == FUNCTION_CALL_NO_SHADOW)
{
const function_block_t *fb = static_cast<const function_block_t *>(b);
return function_get_definition_file(fb->name);
}
else if (b->type() == SOURCE)
{
const source_block_t *sb = static_cast<const source_block_t *>(b);
return sb->source_file;
}
}
/* We query a global array for the current file name, but only do that if we are the principal parser */
@ -1045,6 +1088,8 @@ int parser_t::eval_new_parser(const wcstring &cmd, const io_chain_t &io, enum bl
return 1;
}
//print_stderr(block_stack_description());
/* Determine the initial eval level. If this is the first context, it's -1; otherwise it's the eval level of the top context. This is sort of wonky because we're stitching together a global notion of eval level from these separate objects. A better approach would be some profile object that all contexts share, and that tracks the eval levels on its own. */
int exec_eval_level = (execution_contexts.empty() ? -1 : execution_contexts.back()->current_eval_level());
@ -1395,7 +1440,6 @@ void parser_t::get_backtrace(const wcstring &src, const parse_error_list_t &erro
block_t::block_t(block_type_t t) :
block_type(t),
skip(),
had_command(),
tok_pos(),
node_offset(NODE_OFFSET_INVALID),
loop_status(),
@ -1411,6 +1455,83 @@ block_t::~block_t()
{
}
wcstring block_t::description() const
{
wcstring result;
switch (this->type())
{
case WHILE:
result.append(L"while");
break;
case FOR:
result.append(L"for");
break;
case IF:
result.append(L"if");
break;
case FUNCTION_DEF:
result.append(L"function_def");
break;
case FUNCTION_CALL:
result.append(L"function_call");
break;
case FUNCTION_CALL_NO_SHADOW:
result.append(L"function_call_no_shadow");
break;
case SWITCH:
result.append(L"switch");
break;
case FAKE:
result.append(L"fake");
break;
case SUBST:
result.append(L"substitution");
break;
case TOP:
result.append(L"top");
break;
case BEGIN:
result.append(L"begin");
break;
case SOURCE:
result.append(L"source");
break;
case EVENT:
result.append(L"event");
break;
case BREAKPOINT:
result.append(L"breakpoint");
break;
default:
append_format(result, L"unknown type %ld", (long)this->type());
break;
}
if (this->src_lineno >= 0)
{
append_format(result, L" (line %d)", this->src_lineno);
}
if (this->src_filename != NULL)
{
append_format(result, L" (file %ls)", this->src_filename);
}
return result;
}
/* Various block constructors */
if_block_t::if_block_t() : block_t(IF)

17
parser.h
View File

@ -84,8 +84,10 @@ public:
return this->block_type;
}
/** Description of the block, for debugging */
wcstring description() const;
bool skip; /**< Whether execution of the commands in this block should be skipped */
bool had_command; /**< Set to non-zero once a command has been executed in this block */
int tok_pos; /**< The start index of the block */
node_offset_t node_offset; /* Offset of the node */
@ -96,7 +98,7 @@ public:
/** The job that is currently evaluated in the specified block. */
job_t *job;
/** Name of file that created this block */
/** Name of file that created this block. This string is intern'd. */
const wchar_t *src_filename;
/** Line number where this block was created */
@ -272,6 +274,12 @@ private:
/** The list of blocks, allocated with new. It's our responsibility to delete these */
std::vector<block_t *> block_stack;
/** Gets a description of the block stack, for debugging */
wcstring block_stack_description() const;
/** List of profile items, allocated with new */
std::vector<profile_item_t*> profile_items;
/* No copying allowed */
parser_t(const parser_t&);
parser_t& operator=(const parser_t&);
@ -287,9 +295,6 @@ private:
/** Adds a job to the beginning of the job list. */
void job_add(job_t *job);
public:
std::vector<profile_item_t*> profile_items;
/**
Returns the name of the currently evaluated function if we are
currently evaluating a function, null otherwise. This is tested by
@ -298,6 +303,8 @@ public:
*/
const wchar_t *is_function() const;
public:
/** Get the "principal" parser, whatever that is */
static parser_t &principal_parser();