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
use std::{cell::RefCell, ops::Range};
use lsp_types::{
MarkupContent, ParameterInformation, ParameterLabel, Position, SignatureHelp,
SignatureInformation, Url,
};
use regex::Regex;
use shader_sense::{
position::{ShaderFilePosition, ShaderFileRange, ShaderPosition},
shader_error::ShaderError,
symbols::symbols::{ShaderSymbolData, ShaderSymbolMode},
};
use crate::server::{common::ServerLanguageError, ServerLanguage};
impl ServerLanguage {
pub fn recolt_signature(
&mut self,
uri: &Url,
position: Position,
) -> Result<Option<SignatureHelp>, ServerLanguageError> {
let cached_file = self.get_cachable_file(&uri)?;
let file_path = uri.to_file_path().unwrap();
let shader_position = ShaderFilePosition::new(
file_path.clone(),
position.line as u32,
position.character as u32,
);
let language_data = self
.language_data
.get(&cached_file.shading_language)
.unwrap();
let all_symbol_list = self.watched_files.get_all_symbols(uri);
let symbol_list = all_symbol_list.filter_scoped_symbol(&shader_position);
let content = &RefCell::borrow(&cached_file.shader_module).content;
let function_parameter = get_function_parameter_at_position(content, position);
let (word_range, parameter_index) =
if let Some((function_label_range, parameter_index)) = function_parameter {
let function_label_range = ShaderFileRange::new(
file_path.clone(),
ShaderPosition::from_byte_offset(content, function_label_range.start).unwrap(),
ShaderPosition::from_byte_offset(content, function_label_range.end).unwrap(),
);
let word_range = language_data.symbol_provider.get_word_range_at_position(
&RefCell::borrow(&cached_file.shader_module),
&function_label_range.start(),
);
if let Some(parameter_index) = parameter_index {
(word_range, parameter_index)
} else {
(word_range, 0)
}
} else {
(Err(ShaderError::NoSymbol), 0)
};
match word_range {
Ok(word) => {
let matching_symbols =
word.find_symbol_from_parent(file_path.clone(), &symbol_list);
if matching_symbols.len() == 0 {
Ok(None)
} else {
// We need to find one to fill
let signatures = matching_symbols
.iter()
.filter_map(|shader_symbol| {
let signatures = match &shader_symbol.data {
ShaderSymbolData::Types { constructors } => constructors,
ShaderSymbolData::Struct {
constructors,
members: _,
methods: _,
} => constructors,
ShaderSymbolData::Functions { signatures } => signatures,
ShaderSymbolData::Method {
context: _,
signatures,
} => signatures,
_ => return None,
};
Some(
signatures
.iter()
.map(|signature| SignatureInformation {
label: signature.format(shader_symbol.label.as_str()),
documentation: Some(
lsp_types::Documentation::MarkupContent(
MarkupContent {
kind: lsp_types::MarkupKind::Markdown,
value: if let ShaderSymbolMode::Intrinsic(
intrinsic,
) = &shader_symbol.mode
{
intrinsic.description.clone()
} else {
"".into()
},
},
),
),
parameters: Some(
signature
.parameters
.iter()
.map(|e| ParameterInformation {
label: ParameterLabel::Simple(e.label.clone()),
documentation: Some(
lsp_types::Documentation::MarkupContent(
MarkupContent {
kind:
lsp_types::MarkupKind::Markdown,
value: e.description.clone(),
},
),
),
})
.collect(),
),
active_parameter: None,
})
.collect::<Vec<SignatureInformation>>(),
)
})
.collect::<Vec<Vec<SignatureInformation>>>()
.concat();
if signatures.is_empty() {
Ok(None)
} else {
Ok(Some(SignatureHelp {
signatures: signatures,
active_signature: None,
active_parameter: Some(parameter_index), // TODO: check out of bounds.
}))
}
}
}
Err(err) => {
if let ShaderError::NoSymbol = err {
Ok(None)
} else {
Err(err.into())
}
}
}
}
}
fn get_function_parameter_at_position(
shader: &str,
position: Position,
) -> Option<(Range<usize>, Option<u32>)> {
let line = shader.lines().nth(position.line as usize).unwrap();
// Check this regex is working for all lang.
let regex =
Regex::new("\\b([a-zA-Z_][a-zA-Z0-9_]*)(\\(.*?)(\\))").expect("Failed to init regex");
for capture in regex.captures_iter(line) {
let function_name = capture.get(1).unwrap();
let parenthesis = capture.get(2).unwrap();
let parameter_index = if position.character >= parenthesis.start() as u32
&& position.character <= parenthesis.end() as u32
{
let parameters = line[parenthesis.start()..parenthesis.end()].to_string();
let parameters = parameters.split(',');
let pos_in_parameters = position.character as usize - parenthesis.start();
// Compute parameter index
let mut parameter_index = 0;
let mut parameter_offset = 0;
for parameter in parameters {
parameter_offset += parameter.len() + 1; // Add 1 for removed comma
if parameter_offset > pos_in_parameters {
break;
}
parameter_index += 1;
}
Some(parameter_index)
} else {
None
};
let byte_offset = line.as_ptr() as usize - shader.as_ptr() as usize;
if position.character >= function_name.start() as u32
&& position.character <= parenthesis.end() as u32
{
return Some((
((byte_offset + function_name.start())..(byte_offset + function_name.end())),
parameter_index,
));
}
}
// No signature
None
}