Mirrors/fish-shell
2
0
Fork 0
mirror of https://github.com/fish-shell/fish-shell synced 2024-12-26 12:53:13 +00:00
Code Issues Projects Releases Packages Wiki Activity

Remove parse_exec stuff

Browse source
This commit is contained in:
ridiculousfish 2013-10-08 18:48:01 -07:00
parent 54d7c29221
commit a51bd03a5c
5 changed files with 1 additions and 889 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
Makefile.in
View file

@ -100,7 +100,7 @@ FISH_OBJS := function.o builtin.o complete.o env.o exec.o expand.o \
env_universal.o env_universal_common.o input_common.o event.o \ env_universal.o env_universal_common.o input_common.o event.o \
signal.o io.o parse_util.o common.o screen.o path.o autoload.o \ signal.o io.o parse_util.o common.o screen.o path.o autoload.o \
parser_keywords.o iothread.o color.o postfork.o \ parser_keywords.o iothread.o color.o postfork.o \
builtin_test.o parse_tree.o parse_productions.o parse_exec.o builtin_test.o parse_tree.o parse_productions.o
FISH_INDENT_OBJS := fish_indent.o print_help.o common.o \ FISH_INDENT_OBJS := fish_indent.o print_help.o common.o \
parser_keywords.o wutil.o tokenizer.o parser_keywords.o wutil.o tokenizer.o

114
builtin.cpp
View file

@ -65,7 +65,6 @@
#include "path.h" #include "path.h"
#include "history.h" #include "history.h"
#include "parse_tree.h" #include "parse_tree.h"
#include "parse_exec.h"
/** /**
The default prompt for the read command The default prompt for the read command
@ -3956,104 +3955,6 @@ static int builtin_history(parser_t &parser, wchar_t **argv)
#pragma mark Simulator #pragma mark Simulator
struct parse_execution_simulator_t : public parse_execution_visitor_t
{
wcstring_list_t result;
wcstring &back()
{
assert(! result.empty());
return result.back();
}
void append_src(node_offset_t idx)
{
wcstring tmp;
context->get_source(idx, &tmp);
back().append(tmp);
}
void append(const wchar_t *s)
{
back().append(s);
}
bool enter_job_list(void)
{
return true;
}
bool enter_job(void)
{
result.resize(result.size() + 1);
return true;
}
void visit_statement(void)
{
}
virtual void visit_boolean_statement(void)
{
}
virtual void enter_if_clause(const exec_if_clause_t &statement)
{
}
virtual void exit_if_clause(const exec_if_clause_t &statement)
{
append_format(back(), L"\nIF successful jump to %lu", (unsigned long)statement.body);
}
void visit_basic_statement(const exec_basic_statement_t &statement)
{
wcstring &line = this->back();
if (! line.empty())
{
line.append(L" <pipe> ");
}
switch (statement.decoration)
{
case exec_basic_statement_t::decoration_builtin:
line.append(L"<builtin> ");
break;
case exec_basic_statement_t::decoration_command:
line.append(L"<command> ");
break;
default:
break;
}
line.append(L"cmd:");
this->append_src(statement.command_idx);
for (size_t i=0; i < statement.arguments().size(); i++)
{
const exec_argument_t &arg = statement.arguments().at(i);
append(L" ");
append(L"arg:");
append_src(arg.parse_node_idx);
}
}
void visit_function(const exec_function_header_t &function)
{
wcstring &line = this->back();
line.append(L"define function: ");
wcstring tmp;
context->get_source(function.name_idx, &tmp);
line.append(tmp);
}
void exit_job_list(void)
{
}
};
int builtin_parse(parser_t &parser, wchar_t **argv) int builtin_parse(parser_t &parser, wchar_t **argv)
{ {
struct sigaction act; struct sigaction act;
@ -4090,21 +3991,6 @@ int builtin_parse(parser_t &parser, wchar_t **argv)
{ {
const wcstring dump = parse_dump_tree(parse_tree, src); const wcstring dump = parse_dump_tree(parse_tree, src);
fprintf(stderr, "%ls", dump.c_str()); fprintf(stderr, "%ls", dump.c_str());
if (0)
{
parse_execution_context_t ctx(parse_tree, src);
parse_execution_simulator_t sim;
sim.context = &ctx;
while (ctx.visit_next_node(&sim))
{
}
stdout_buffer.append(L"Simulating execution:\n");
for (size_t i=0; i < sim.result.size(); i++)
{
stdout_buffer.append(sim.result.at(i));
stdout_buffer.push_back(L'\n');
}
}
} }
} }
return STATUS_BUILTIN_OK; return STATUS_BUILTIN_OK;

8
fish.xcodeproj/project.pbxproj
View file

@ -112,13 +112,11 @@
D08A32B817B446A300F3A533 /* signal.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0A0855C13B3ACEE0099B651 /* signal.cpp */; }; D08A32B817B446A300F3A533 /* signal.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0A0855C13B3ACEE0099B651 /* signal.cpp */; };
D08A32B917B446B100F3A533 /* parse_productions.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0FE8EE7179FB75F008C9F21 /* parse_productions.cpp */; }; D08A32B917B446B100F3A533 /* parse_productions.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0FE8EE7179FB75F008C9F21 /* parse_productions.cpp */; };
D08A32BA17B446B100F3A533 /* parse_tree.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0C52F351765284C00BFAB82 /* parse_tree.cpp */; }; D08A32BA17B446B100F3A533 /* parse_tree.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0C52F351765284C00BFAB82 /* parse_tree.cpp */; };
D08A32BB17B446B100F3A533 /* parse_exec.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0C52F331765281F00BFAB82 /* parse_exec.cpp */; };
D08A32BC17B4473B00F3A533 /* libncurses.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = D0D02A8C15983CFA008E62BD /* libncurses.dylib */; }; D08A32BC17B4473B00F3A533 /* libncurses.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = D0D02A8C15983CFA008E62BD /* libncurses.dylib */; };
D08A32BD17B4474000F3A533 /* libiconv.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = D0D02A8A15983CDF008E62BD /* libiconv.dylib */; }; D08A32BD17B4474000F3A533 /* libiconv.dylib in Frameworks */ = {isa = PBXBuildFile; fileRef = D0D02A8A15983CDF008E62BD /* libiconv.dylib */; };
D0A564FE168D23D800AF6161 /* man in CopyFiles */ = {isa = PBXBuildFile; fileRef = D0A564F1168D0BAB00AF6161 /* man */; }; D0A564FE168D23D800AF6161 /* man in CopyFiles */ = {isa = PBXBuildFile; fileRef = D0A564F1168D0BAB00AF6161 /* man */; };
D0A56501168D258300AF6161 /* man in Copy Files */ = {isa = PBXBuildFile; fileRef = D0A564F1168D0BAB00AF6161 /* man */; }; D0A56501168D258300AF6161 /* man in Copy Files */ = {isa = PBXBuildFile; fileRef = D0A564F1168D0BAB00AF6161 /* man */; };
D0C52F371765284C00BFAB82 /* parse_tree.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0C52F351765284C00BFAB82 /* parse_tree.cpp */; }; D0C52F371765284C00BFAB82 /* parse_tree.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0C52F351765284C00BFAB82 /* parse_tree.cpp */; };
D0C52F381765720600BFAB82 /* parse_exec.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0C52F331765281F00BFAB82 /* parse_exec.cpp */; };
D0CBD587159EF0E10024809C /* launch_fish.scpt in Resources */ = {isa = PBXBuildFile; fileRef = D0CBD586159EF0E10024809C /* launch_fish.scpt */; }; D0CBD587159EF0E10024809C /* launch_fish.scpt in Resources */ = {isa = PBXBuildFile; fileRef = D0CBD586159EF0E10024809C /* launch_fish.scpt */; };
D0D02A67159837AD008E62BD /* complete.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0A0853713B3ACEE0099B651 /* complete.cpp */; }; D0D02A67159837AD008E62BD /* complete.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0A0853713B3ACEE0099B651 /* complete.cpp */; };
D0D02A69159837B2008E62BD /* env.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0A0853A13B3ACEE0099B651 /* env.cpp */; }; D0D02A69159837B2008E62BD /* env.cpp in Sources */ = {isa = PBXBuildFile; fileRef = D0A0853A13B3ACEE0099B651 /* env.cpp */; };
@ -497,8 +495,6 @@
D0B6B0FE14E88BA400AD6C10 /* color.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = color.cpp; sourceTree = "<group>"; }; D0B6B0FE14E88BA400AD6C10 /* color.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = color.cpp; sourceTree = "<group>"; };
D0B6B0FF14E88BA400AD6C10 /* color.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = color.h; sourceTree = "<group>"; }; D0B6B0FF14E88BA400AD6C10 /* color.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = color.h; sourceTree = "<group>"; };
D0C4FD9415A7D7EE00212EF1 /* config.fish */ = {isa = PBXFileReference; lastKnownFileType = text; name = config.fish; path = etc/config.fish; sourceTree = "<group>"; }; D0C4FD9415A7D7EE00212EF1 /* config.fish */ = {isa = PBXFileReference; lastKnownFileType = text; name = config.fish; path = etc/config.fish; sourceTree = "<group>"; };
D0C52F331765281F00BFAB82 /* parse_exec.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = parse_exec.cpp; sourceTree = "<group>"; };
D0C52F341765281F00BFAB82 /* parse_exec.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = parse_exec.h; sourceTree = "<group>"; };
D0C52F351765284C00BFAB82 /* parse_tree.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = parse_tree.cpp; sourceTree = "<group>"; }; D0C52F351765284C00BFAB82 /* parse_tree.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = parse_tree.cpp; sourceTree = "<group>"; };
D0C52F361765284C00BFAB82 /* parse_tree.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = parse_tree.h; sourceTree = "<group>"; }; D0C52F361765284C00BFAB82 /* parse_tree.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = parse_tree.h; sourceTree = "<group>"; };
D0C6FCC914CFA4B0004CE8AD /* autoload.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = autoload.cpp; sourceTree = "<group>"; }; D0C6FCC914CFA4B0004CE8AD /* autoload.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = autoload.cpp; sourceTree = "<group>"; };
@ -665,8 +661,6 @@
D0FE8EE7179FB75F008C9F21 /* parse_productions.cpp */, D0FE8EE7179FB75F008C9F21 /* parse_productions.cpp */,
D0C52F361765284C00BFAB82 /* parse_tree.h */, D0C52F361765284C00BFAB82 /* parse_tree.h */,
D0C52F351765284C00BFAB82 /* parse_tree.cpp */, D0C52F351765284C00BFAB82 /* parse_tree.cpp */,
D0C52F341765281F00BFAB82 /* parse_exec.h */,
D0C52F331765281F00BFAB82 /* parse_exec.cpp */,
D0A0850D13B3ACEE0099B651 /* fallback.h */, D0A0850D13B3ACEE0099B651 /* fallback.h */,
D0A0853E13B3ACEE0099B651 /* fallback.cpp */, D0A0853E13B3ACEE0099B651 /* fallback.cpp */,
D0A0850E13B3ACEE0099B651 /* function.h */, D0A0850E13B3ACEE0099B651 /* function.h */,
@ -1130,7 +1124,6 @@
files = ( files = (
D08A32B917B446B100F3A533 /* parse_productions.cpp in Sources */, D08A32B917B446B100F3A533 /* parse_productions.cpp in Sources */,
D08A32BA17B446B100F3A533 /* parse_tree.cpp in Sources */, D08A32BA17B446B100F3A533 /* parse_tree.cpp in Sources */,
D08A32BB17B446B100F3A533 /* parse_exec.cpp in Sources */,
D08A32A717B446A300F3A533 /* autoload.cpp in Sources */, D08A32A717B446A300F3A533 /* autoload.cpp in Sources */,
D08A32A817B446A300F3A533 /* builtin_test.cpp in Sources */, D08A32A817B446A300F3A533 /* builtin_test.cpp in Sources */,
D08A32A917B446A300F3A533 /* color.cpp in Sources */, D08A32A917B446A300F3A533 /* color.cpp in Sources */,
@ -1255,7 +1248,6 @@
D0D02A7B15983928008E62BD /* env_universal_common.cpp in Sources */, D0D02A7B15983928008E62BD /* env_universal_common.cpp in Sources */,
D0D02A89159839DF008E62BD /* fish.cpp in Sources */, D0D02A89159839DF008E62BD /* fish.cpp in Sources */,
D0C52F371765284C00BFAB82 /* parse_tree.cpp in Sources */, D0C52F371765284C00BFAB82 /* parse_tree.cpp in Sources */,
D0C52F381765720600BFAB82 /* parse_exec.cpp in Sources */,
D0FE8EE8179FB760008C9F21 /* parse_productions.cpp in Sources */, D0FE8EE8179FB760008C9F21 /* parse_productions.cpp in Sources */,
); );
runOnlyForDeploymentPostprocessing = 0; runOnlyForDeploymentPostprocessing = 0;

593
parse_exec.cpp
View file

@ -1,593 +0,0 @@
#include "parse_exec.h"
#include <stack>
struct exec_node_t
{
node_offset_t parse_node_idx;
node_offset_t body_parse_node_idx;
bool visited;
explicit exec_node_t(node_offset_t pni) : parse_node_idx(pni), body_parse_node_idx(NODE_OFFSET_INVALID), visited(false)
{
}
explicit exec_node_t(node_offset_t pni, node_offset_t body_pni) : parse_node_idx(pni), body_parse_node_idx(body_pni), visited(false)
{
}
};
exec_basic_statement_t::exec_basic_statement_t() : command_idx(0), decoration(decoration_plain)
{
}
class parse_exec_t
{
parse_node_tree_t parse_tree;
wcstring src;
/* The stack of nodes as we execute them */
std::vector<exec_node_t> exec_nodes;
/* The stack of commands being built */
std::vector<exec_basic_statement_t> assembling_statements;
/* Current visitor (very transient) */
struct parse_execution_visitor_t * visitor;
const parse_node_t &get_child(const parse_node_t &parent, node_offset_t which) const
{
return parse_tree.at(parent.child_offset(which));
}
void pop_push_specific(node_offset_t idx1, node_offset_t idx2 = NODE_OFFSET_INVALID, node_offset_t idx3 = NODE_OFFSET_INVALID, node_offset_t idx4 = NODE_OFFSET_INVALID, node_offset_t idx5 = NODE_OFFSET_INVALID)
{
PARSE_ASSERT(! exec_nodes.empty());
// Figure out the offset of the children
exec_node_t &top = exec_nodes.back();
const parse_node_t &parse_node = parse_tree.at(top.parse_node_idx);
node_offset_t child_node_idx = parse_node.child_start;
// Remove the top node
exec_nodes.pop_back();
// Append the given children, backwards
const node_offset_t idxs[] = {idx5, idx4, idx3, idx2, idx1};
for (size_t q=0; q < sizeof idxs / sizeof *idxs; q++)
{
node_offset_t idx = idxs[q];
if (idx != (node_offset_t)(-1))
{
PARSE_ASSERT(idx < parse_node.child_count);
exec_nodes.push_back(exec_node_t(child_node_idx + idx));
}
}
}
void push(node_offset_t global_idx)
{
exec_nodes.push_back(exec_node_t(global_idx));
}
void push(const exec_node_t &node)
{
exec_nodes.push_back(node);
}
void pop_push(node_offset_t child_idx, node_offset_t child_count = 1)
{
PARSE_ASSERT(! exec_nodes.empty());
if (child_count == 0)
{
// No children, just remove the top node
exec_nodes.pop_back();
}
else
{
// Figure out the offset of the children
exec_node_t &top = exec_nodes.back();
const parse_node_t &parse_node = parse_tree.at(top.parse_node_idx);
PARSE_ASSERT(child_idx < parse_node.child_count);
node_offset_t child_node_idx = parse_node.child_start + child_idx;
// Remove the top node
exec_nodes.pop_back();
// Append the given children, backwards
node_offset_t cursor = child_count;
while (cursor--)
{
exec_nodes.push_back(exec_node_t(child_node_idx + cursor));
}
}
}
void pop()
{
PARSE_ASSERT(! exec_nodes.empty());
exec_nodes.pop_back();
}
void pop_push_all()
{
exec_node_t &top = exec_nodes.back();
const parse_node_t &parse_node = parse_tree.at(top.parse_node_idx);
pop_push(0, parse_node.child_count);
}
void assemble_1_argument_or_redirection(node_offset_t idx, exec_arguments_and_redirections_t *output) const
{
const parse_node_t &node = parse_tree.at(idx);
PARSE_ASSERT(output != NULL);
PARSE_ASSERT(node.type == symbol_argument_or_redirection);
PARSE_ASSERT(node.child_count == 1);
node_offset_t child_idx = node.child_offset(0);
const parse_node_t &child = parse_tree.at(child_idx);
switch (child.type)
{
case parse_token_type_string:
// Argument
{
exec_argument_t arg = exec_argument_t();
arg.parse_node_idx = child_idx;
output->arguments.push_back(arg);
}
break;
case parse_token_type_redirection:
// Redirection
{
exec_redirection_t redirect = exec_redirection_t();
redirect.parse_node_idx = child_idx;
output->redirections.push_back(redirect);
}
break;
default:
PARSER_DIE();
break;
}
}
void assemble_arguments_and_redirections(node_offset_t start_idx, exec_arguments_and_redirections_t *output) const
{
node_offset_t idx = start_idx;
for (;;)
{
const parse_node_t &node = parse_tree.at(idx);
PARSE_ASSERT(node.type == symbol_arguments_or_redirections_list);
PARSE_ASSERT(node.child_count == 0 || node.child_count == 2);
if (node.child_count == 0)
{
// No more children
break;
}
else
{
// Skip to next child
assemble_1_argument_or_redirection(node.child_offset(0), output);
idx = node.child_offset(1);
}
}
}
void assemble_command_for_plain_statement(node_offset_t idx, parse_keyword_t decoration)
{
const parse_node_t &node = parse_tree.at(idx);
PARSE_ASSERT(node.type == symbol_plain_statement);
PARSE_ASSERT(node.child_count == 2);
exec_basic_statement_t statement;
statement.set_decoration(decoration);
statement.command_idx = node.child_offset(0);
assemble_arguments_and_redirections(node.child_offset(1), &statement.arguments_and_redirections);
visitor->visit_basic_statement(statement);
}
void assemble_block_statement(node_offset_t parse_node_idx)
{
const parse_node_t &node = parse_tree.at(parse_node_idx);
PARSE_ASSERT(node.type == symbol_block_statement);
PARSE_ASSERT(node.child_count == 5);
// Fetch arguments and redirections. These ought to be evaluated before the job list
exec_block_statement_t statement;
assemble_arguments_and_redirections(node.child_offset(4), &statement.arguments_and_redirections);
// Generic visit
visitor->enter_block_statement(statement);
// Dig into the header to discover the type
const parse_node_t &header_parent = parse_tree.at(node.child_offset(0));
PARSE_ASSERT(header_parent.type == symbol_block_header);
PARSE_ASSERT(header_parent.child_count == 1);
const node_offset_t header_idx = header_parent.child_offset(0);
// Fetch body (job list)
node_offset_t body_idx = node.child_offset(2);
PARSE_ASSERT(parse_tree.at(body_idx).type == symbol_job_list);
pop();
push(exec_node_t(header_idx, body_idx));
}
/* which: 0 -> if, 1 -> else if, 2 -> else */
void assemble_if_else_clause(exec_node_t &exec_node, const parse_node_t &node, int which)
{
if (which == 0)
{
PARSE_ASSERT(node.type == symbol_if_clause);
PARSE_ASSERT(node.child_count == 4);
}
else if (which == 2)
{
PARSE_ASSERT(node.type == symbol_else_continuation);
PARSE_ASSERT(node.child_count == 2);
}
struct exec_if_clause_t clause;
if (which == 0)
{
clause.body = node.child_offset(3);
}
else
{
clause.body = node.child_offset(1);
}
if (! exec_node.visited)
{
visitor->enter_if_clause(clause);
exec_node.visited = true;
if (which == 0)
{
push(node.child_offset(1));
}
}
else
{
visitor->exit_if_clause(clause);
pop();
}
}
void assemble_arguments(node_offset_t start_idx, exec_argument_list_t *output) const
{
node_offset_t idx = start_idx;
for (;;)
{
const parse_node_t &node = parse_tree.at(idx);
PARSE_ASSERT(node.type == symbol_argument_list);
if (node.type == symbol_argument_list)
{
// argument list, may be empty
PARSE_ASSERT(node.child_count == 0 || node.child_count == 1);
if (node.child_count == 0)
{
break;
}
else
{
idx = node.child_offset(0);
}
}
else
{
// nonempty argument list
PARSE_ASSERT(node.child_count == 2);
output->push_back(exec_argument_t(node.child_offset(0)));
idx = node.child_offset(1);
}
}
}
void assemble_1_case_item(exec_switch_statement_t *statement, node_offset_t node_idx)
{
const parse_node_t &node = parse_tree.at(node_idx);
PARSE_ASSERT(node.type == symbol_case_item);
// add a new case
size_t len = statement->cases.size();
statement->cases.resize(len + 1);
exec_switch_case_t &new_case = statement->cases.back();
// assemble it
new_case.body = node.child_offset(3);
assemble_arguments(node.child_offset(1), &new_case.arguments);
}
void assemble_case_item_list(exec_switch_statement_t *statement, node_offset_t node_idx)
{
const parse_node_t &node = parse_tree.at(node_idx);
PARSE_ASSERT(node.type == symbol_case_item_list);
PARSE_ASSERT(node.child_count == 0 || node.child_count == 2);
if (node.child_count == 2)
{
assemble_1_case_item(statement, node.child_offset(0));
assemble_case_item_list(statement, node.child_offset(1));
}
}
void assemble_switch_statement(const exec_node_t &exec_node, const parse_node_t &parse_node)
{
PARSE_ASSERT(parse_node.type == symbol_switch_statement);
exec_switch_statement_t statement;
statement.argument.parse_node_idx = parse_node.child_offset(1);
assemble_case_item_list(&statement, parse_node.child_offset(3));
visitor->visit_switch_statement(statement);
// pop off the switch
pop();
}
void assemble_function_header(const exec_node_t &exec_node, const parse_node_t &header)
{
PARSE_ASSERT(header.type == symbol_function_header);
PARSE_ASSERT(&header == &parse_tree.at(exec_node.parse_node_idx));
PARSE_ASSERT(exec_node.body_parse_node_idx != NODE_OFFSET_INVALID);
exec_function_header_t function_info;
function_info.name_idx = header.child_offset(1);
function_info.body_idx = exec_node.body_parse_node_idx;
assemble_arguments(header.child_offset(2), &function_info.arguments);
visitor->visit_function(function_info);
// Always pop
pop();
}
void enter_parse_node(size_t idx);
void run_top_node(void);
public:
void get_node_string(node_offset_t idx, wcstring *output) const
{
const parse_node_t &node = parse_tree.at(idx);
PARSE_ASSERT(node.source_start <= src.size());
PARSE_ASSERT(node.source_start + node.source_length <= src.size());
output->assign(src, node.source_start, node.source_length);
}
bool visit_next_node(parse_execution_visitor_t *v);
parse_exec_t(const parse_node_tree_t &tree, const wcstring &s) : parse_tree(tree), src(s), visitor(NULL)
{
if (! parse_tree.empty())
{
exec_nodes.push_back(exec_node_t(0));
}
}
};
void parse_exec_t::run_top_node()
{
PARSE_ASSERT(! exec_nodes.empty());
exec_node_t &exec_node = exec_nodes.back();
const node_offset_t parse_node_idx = exec_node.parse_node_idx;
const parse_node_t &parse_node = parse_tree.at(exec_node.parse_node_idx);
bool log = true;
if (log)
{
wcstring tmp;
tmp.append(exec_nodes.size(), L' ');
tmp.append(parse_node.describe());
printf("%ls\n", tmp.c_str());
}
switch (parse_node.type)
{
case symbol_job_list:
PARSE_ASSERT(parse_node.child_count == 0 || parse_node.child_count == 2);
if (parse_node.child_count == 0)
{
// No more jobs, done
visitor->exit_job_list();
pop();
}
else if (parse_tree.at(parse_node.child_start + 0).type == parse_token_type_end)
{
// Empty job, so just skip it
pop_push(1, 1);
}
else
{
// Normal job
visitor->enter_job_list();
pop_push(0, 2);
}
break;
case symbol_job:
{
PARSE_ASSERT(parse_node.child_count == 2);
visitor->enter_job();
pop_push_all();
break;
}
case symbol_job_continuation:
PARSE_ASSERT(parse_node.child_count == 0 || parse_node.child_count == 3);
if (parse_node.child_count == 0)
{
// All done with this job
visitor->exit_job();
pop();
}
else
{
// Skip the pipe
pop_push(1, 2);
}
break;
case symbol_statement:
{
PARSE_ASSERT(parse_node.child_count == 1);
pop_push_all();
break;
}
case symbol_block_statement:
{
PARSE_ASSERT(parse_node.child_count == 5);
assemble_block_statement(parse_node_idx);
break;
}
case symbol_block_header:
{
PARSE_ASSERT(parse_node.child_count == 1);
pop_push_all();
break;
}
case symbol_function_header:
{
PARSE_ASSERT(parse_node.child_count == 3);
assemble_function_header(exec_node, parse_node);
break;
}
case symbol_if_statement:
{
PARSE_ASSERT(parse_node.child_count == 4);
pop_push(0, 2);
break;
}
case symbol_if_clause:
{
PARSE_ASSERT(parse_node.child_count == 4);
assemble_if_else_clause(exec_node, parse_node, 0);
pop();
break;
}
case symbol_else_clause:
{
PARSE_ASSERT(parse_node.child_count == 0 || parse_node.child_count == 2);
if (parse_node.child_count == 0)
{
// No else
pop();
}
else
{
// We have an else
pop_push(1);
}
break;
}
case symbol_else_continuation:
{
// Figure out if this is an else if or a terminating else
PARSE_ASSERT(parse_node.child_count == 2);
const parse_node_t &first_child = get_child(parse_node, 1);
PARSE_ASSERT(first_child.type == symbol_if_clause || first_child.type == parse_token_type_end);
if (first_child.type == symbol_if_clause)
{
pop_push_all();
}
else
{
// else
assemble_if_else_clause(exec_node, parse_node, 2);
pop();
}
break;
}
case symbol_switch_statement:
{
assemble_switch_statement(exec_node, parse_node);
break;
}
case symbol_decorated_statement:
{
PARSE_ASSERT(parse_node.child_count == 1 || parse_node.child_count == 2);
node_offset_t plain_statement_idx = parse_node.child_offset(parse_node.child_count - 1);
parse_keyword_t decoration = static_cast<parse_keyword_t>(parse_node.tag);
assemble_command_for_plain_statement(plain_statement_idx, decoration);
pop();
break;
}
// The following symbols should be handled by their parents, i.e. never pushed on our stack
case symbol_case_item_list:
case symbol_plain_statement:
case symbol_arguments_or_redirections_list:
case symbol_argument_or_redirection:
fprintf(stderr, "Unexpected token type %ls at index %ld. This should have been handled by the parent.\n", token_type_description(parse_node.type).c_str(), exec_node.parse_node_idx);
PARSER_DIE();
break;
case parse_token_type_end:
PARSE_ASSERT(parse_node.child_count == 0);
pop();
break;
default:
fprintf(stderr, "Unhandled token type %ls at index %ld\n", token_type_description(parse_node.type).c_str(), exec_node.parse_node_idx);
PARSER_DIE();
break;
}
}
bool parse_exec_t::visit_next_node(parse_execution_visitor_t *v)
{
PARSE_ASSERT(v != NULL);
PARSE_ASSERT(visitor == NULL);
if (exec_nodes.empty())
{
return false;
}
visitor = v;
run_top_node();
visitor = NULL;
return true;
}
void parse_exec_t::enter_parse_node(size_t idx)
{
PARSE_ASSERT(idx < parse_tree.size());
exec_node_t exec(idx);
exec_nodes.push_back(exec);
}
parse_execution_context_t::parse_execution_context_t(const parse_node_tree_t &n, const wcstring &s)
{
ctx = new parse_exec_t(n, s);
}
parse_execution_context_t::~parse_execution_context_t()
{
delete ctx;
}
bool parse_execution_context_t::visit_next_node(parse_execution_visitor_t *visitor)
{
return ctx->visit_next_node(visitor);
}
void parse_execution_context_t::get_source(node_offset_t idx, wcstring *result) const
{
return ctx->get_node_string(idx, result);
}

173
parse_exec.h
View file

@ -1,173 +0,0 @@
/**\file parse_exec.h
Programmatic execution of a parse tree
*/
#ifndef FISH_PARSE_EXEC_H
#define FISH_PARSE_EXEC_H
#include "parse_tree.h"
struct parse_execution_visitor_t;
class parse_exec_t;
class parse_execution_context_t
{
parse_exec_t *ctx; //owned
public:
parse_execution_context_t(const parse_node_tree_t &n, const wcstring &s);
~parse_execution_context_t();
bool visit_next_node(parse_execution_visitor_t *visitor);
// Gets the source for a node at a given index
void get_source(node_offset_t idx, wcstring *result) const;
};
struct exec_argument_t
{
node_offset_t parse_node_idx;
exec_argument_t(node_offset_t p) : parse_node_idx(p)
{
}
exec_argument_t()
{
}
};
typedef std::vector<exec_argument_t> exec_argument_list_t;
struct exec_redirection_t
{
node_offset_t parse_node_idx;
};
typedef std::vector<exec_redirection_t> exec_redirection_list_t;
struct exec_arguments_and_redirections_t
{
exec_argument_list_t arguments;
exec_redirection_list_t redirections;
};
struct exec_basic_statement_t
{
// Node containing the command
node_offset_t command_idx;
// Arguments
exec_arguments_and_redirections_t arguments_and_redirections;
// Decoration
enum
{
decoration_plain,
decoration_command,
decoration_builtin
} decoration;
exec_basic_statement_t();
void set_decoration(uint32_t k)
{
PARSE_ASSERT(k == parse_keyword_none || k == parse_keyword_command || k == parse_keyword_builtin);
switch (k)
{
case parse_keyword_none:
decoration = decoration_plain;
break;
case parse_keyword_command:
decoration = decoration_command;
break;
case parse_keyword_builtin:
decoration = decoration_builtin;
break;
default:
PARSER_DIE();
break;
}
}
const exec_argument_list_t &arguments() const
{
return arguments_and_redirections.arguments;
}
const exec_redirection_list_t &redirections() const
{
return arguments_and_redirections.redirections;
}
};
struct exec_function_header_t
{
// Node containing the function name
node_offset_t name_idx;
// Node containing the function body
node_offset_t body_idx;
// Arguments
exec_argument_list_t arguments;
};
struct exec_block_statement_t
{
// Arguments
exec_arguments_and_redirections_t arguments_and_redirections;
};
struct exec_if_clause_t
{
// Node containing the body of the if statement
node_offset_t body;
};
struct exec_switch_case_t
{
exec_argument_list_t arguments;
node_offset_t body;
};
struct exec_switch_statement_t
{
exec_argument_t argument;
std::vector<exec_switch_case_t> cases;
};
struct parse_execution_visitor_t
{
node_offset_t node_idx;
parse_execution_context_t *context;
parse_execution_visitor_t() : node_idx(0), context(NULL)
{
}
virtual bool enter_job_list(void)
{
return true;
}
virtual bool enter_job(void)
{
return true;
}
virtual void visit_statement(void) { }
virtual void visit_function(const exec_function_header_t &function) { }
virtual bool enter_block_statement(const exec_block_statement_t &statement)
{
return true;
}
virtual void enter_if_clause(const exec_if_clause_t &statement) { }
virtual void exit_if_clause(const exec_if_clause_t &statement) { }
virtual void visit_switch_statement(const exec_switch_statement_t &header) { }
virtual void visit_boolean_statement(void) { }
virtual void visit_basic_statement(const exec_basic_statement_t &statement) { }
virtual void exit_job(void) { }
virtual void exit_job_list(void) { }
};
#endif