-
-
Notifications
You must be signed in to change notification settings - Fork 41
/
ast_explorer.rs
209 lines (196 loc) · 6.08 KB
/
ast_explorer.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
#![allow(dead_code)]
use std::{fs, path::PathBuf};
use argh::FromArgs;
use console::style;
use enum_variants_strings::EnumVariantsStrings;
use parser::{source_map::FileSystem, ASTNode, Expression, Module, ToStringOptions};
use crate::{
reporting::emit_diagnostics,
utilities::{print_to_cli, print_to_cli_without_newline},
};
/// Repl for testing out AST
#[derive(FromArgs, Debug)]
#[argh(subcommand, name = "ast-explorer")]
pub(crate) struct ExplorerArguments {
#[argh(subcommand)]
nested: ExplorerSubCommand,
/// path to input file
#[argh(option)]
file: Option<PathBuf>,
}
impl ExplorerArguments {
#[allow(clippy::needless_continue)]
pub(crate) fn run<T: crate::ReadFromFS, U: crate::CLIInputResolver>(
&mut self,
fs_resolver: &T,
cli_input_resolver: U,
) {
if let Some(ref file) = self.file {
let content = fs_resolver.get_content_at_path(file);
if let Some(content) = content {
self.nested.run(content, Some(file.to_owned()));
} else {
eprintln!("Could not find file at {}", file.display());
}
} else {
print_to_cli(format_args!("ezno ast-explorer\nUse #exit to leave. Also #switch-mode *mode name* and #load-file *path*"));
loop {
let input = cli_input_resolver(self.nested.to_str()).unwrap_or_default();
if input.is_empty() {
continue;
} else if input.trim() == "#exit" {
break;
} else if let Some(new_mode) = input.strip_prefix("#switch-mode ") {
self.nested = match ExplorerSubCommand::from_str(new_mode.trim()) {
Ok(mode) => mode,
Err(expected) => {
print_to_cli(format_args!("Unexpected mode, options are {expected:?}"));
continue;
}
};
} else if let Some(path) = input.strip_prefix("#load-file ") {
let input = match fs::read_to_string(path.trim()) {
Ok(string) => string,
Err(err) => {
print_to_cli(format_args!("{err:?}"));
continue;
}
};
self.nested.run(input, Some(PathBuf::from(path)));
} else {
self.nested.run(input, None);
}
}
}
}
}
#[derive(FromArgs, Debug, EnumVariantsStrings)]
#[argh(subcommand)]
#[enum_variants_strings_transform(transform = "kebab_case")]
#[allow(clippy::upper_case_acronyms)]
pub(crate) enum ExplorerSubCommand {
AST(ASTArgs),
FullAST(FullASTArgs),
Prettifier(PrettyArgs),
Uglifier(UglifierArgs),
Lexer(LexerArgs),
}
/// Prints AST for a given expression
#[derive(FromArgs, Debug, Default)]
#[argh(subcommand, name = "ast")]
pub(crate) struct ASTArgs {
/// print results as json
#[argh(switch)]
json: bool,
}
/// Prints AST for a given module/block
#[derive(FromArgs, Debug, Default)]
#[argh(subcommand, name = "full-ast")]
pub(crate) struct FullASTArgs {
/// print results as json
#[argh(switch)]
json: bool,
}
/// Prettifies source code (full whitespace)
#[derive(FromArgs, Debug, Default)]
#[argh(subcommand, name = "prettifier")]
pub(crate) struct PrettyArgs {}
/// Removes whitespace from input
#[derive(FromArgs, Debug, Default)]
#[argh(subcommand, name = "uglifier")]
pub(crate) struct UglifierArgs {}
/// Prints sources with tokens over
#[derive(FromArgs, Debug, Default)]
#[argh(subcommand, name = "lexer")]
pub(crate) struct LexerArgs {}
impl ExplorerSubCommand {
pub fn run(&self, input: String, path: Option<PathBuf>) {
match self {
ExplorerSubCommand::AST(cfg) => {
let mut fs =
parser::source_map::MapFileStore::<parser::source_map::NoPathMap>::default();
let source_id = fs.new_source_id(path.unwrap_or_default(), input.clone());
let res = Expression::from_string(input, parser::ParseOptions::all_features());
match res {
Ok(res) => {
if cfg.json {
print_to_cli(format_args!(
"{}",
serde_json::to_string_pretty(&res).unwrap()
));
} else {
print_to_cli(format_args!("{res:#?}"));
}
}
// TODO temp
Err(err) => {
emit_diagnostics(std::iter::once((err, source_id).into()), &fs).unwrap()
}
}
}
ExplorerSubCommand::FullAST(cfg) => {
let mut fs =
parser::source_map::MapFileStore::<parser::source_map::NoPathMap>::default();
let source_id = fs.new_source_id(path.unwrap_or_default(), input.clone());
let res = Module::from_string(input, parser::ParseOptions::all_features());
match res {
Ok(res) => {
if cfg.json {
print_to_cli(format_args!(
"{}",
serde_json::to_string_pretty(&res).unwrap()
));
} else {
print_to_cli(format_args!("{res:#?}"));
}
}
// TODO temp
Err(err) => {
emit_diagnostics(std::iter::once((err, source_id).into()), &fs).unwrap()
}
}
}
ExplorerSubCommand::Prettifier(_) | ExplorerSubCommand::Uglifier(_) => {
let mut fs =
parser::source_map::MapFileStore::<parser::source_map::NoPathMap>::default();
let source_id = fs.new_source_id(path.unwrap_or_default(), input.clone());
let res = Module::from_string(input, Default::default());
match res {
Ok(module) => {
let options = if matches!(self, ExplorerSubCommand::Prettifier(_)) {
ToStringOptions { trailing_semicolon: true, ..Default::default() }
} else {
ToStringOptions::minified()
};
print_to_cli(format_args!("{}", module.to_string(&options)));
}
Err(err) => {
emit_diagnostics(std::iter::once((err, source_id).into()), &fs).unwrap()
}
}
}
ExplorerSubCommand::Lexer(_) => {
let mut color = console::Color::Red;
for (section, with) in parser::script_to_tokens(input) {
if with {
let value = style(section).bg(color);
// Cycle through colors
color = match color {
console::Color::Red => console::Color::Green,
console::Color::Green => console::Color::Yellow,
console::Color::Yellow => console::Color::Blue,
console::Color::Blue => console::Color::Magenta,
console::Color::Magenta => console::Color::Cyan,
console::Color::Cyan => console::Color::Red,
_ => unreachable!(),
};
print_to_cli_without_newline(format_args!("{value}"));
} else {
print_to_cli_without_newline(format_args!("{section}"));
}
}
print_to_cli(format_args!(""));
}
}
}
}