v8 130.0.1

Rust bindings to V8
Documentation 
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

use std::marker::PhantomData;
use std::mem::MaybeUninit;
use std::ptr::null;

use crate::Context;
use crate::Data;
use crate::HandleScope;
use crate::Local;
use crate::Script;
use crate::String;
use crate::UnboundScript;
use crate::Value;

/// The origin, within a file, of a script.
#[repr(C)]
#[derive(Debug)]
pub struct ScriptOrigin<'s>(
  [u8; crate::binding::v8__ScriptOrigin_SIZE],
  PhantomData<&'s ()>,
);

extern "C" {
  fn v8__Script__Compile(
    context: *const Context,
    source: *const String,
    origin: *const ScriptOrigin,
  ) -> *const Script;
  fn v8__Script__GetUnboundScript(
    script: *const Script,
  ) -> *const UnboundScript;
  fn v8__Script__Run(
    script: *const Script,
    context: *const Context,
  ) -> *const Value;

  fn v8__ScriptOrigin__CONSTRUCT(
    buf: *mut MaybeUninit<ScriptOrigin>,
    resource_name: *const Value,
    resource_line_offset: i32,
    resource_column_offset: i32,
    resource_is_shared_cross_origin: bool,
    script_id: i32,
    source_map_url: *const Value,
    resource_is_opaque: bool,
    is_wasm: bool,
    is_module: bool,
    host_defined_options: *const Data,
  );
  fn v8__ScriptOrigin__ScriptId(origin: *const ScriptOrigin) -> i32;
  fn v8__ScriptOrigin__ResourceName(
    origin: *const ScriptOrigin,
  ) -> *const Value;
  fn v8__ScriptOrigin__SourceMapUrl(
    origin: *const ScriptOrigin,
  ) -> *const Value;
}

impl Script {
  /// A shorthand for ScriptCompiler::Compile().
  #[inline(always)]
  pub fn compile<'s>(
    scope: &mut HandleScope<'s>,
    source: Local<String>,
    origin: Option<&ScriptOrigin>,
  ) -> Option<Local<'s, Script>> {
    unsafe {
      scope.cast_local(|sd| {
        v8__Script__Compile(
          sd.get_current_context(),
          &*source,
          origin.map(|r| r as *const _).unwrap_or_else(null),
        )
      })
    }
  }

  /// Returns the corresponding context-unbound script.
  #[inline(always)]
  pub fn get_unbound_script<'s>(
    &self,
    scope: &mut HandleScope<'s>,
  ) -> Local<'s, UnboundScript> {
    unsafe {
      scope
        .cast_local(|_| v8__Script__GetUnboundScript(self))
        .unwrap()
    }
  }

  /// Runs the script returning the resulting value. It will be run in the
  /// context in which it was created (ScriptCompiler::CompileBound or
  /// UnboundScript::BindToCurrentContext()).
  #[inline]
  pub fn run<'s>(
    &self,
    scope: &mut HandleScope<'s>,
  ) -> Option<Local<'s, Value>> {
    unsafe {
      scope.cast_local(|sd| v8__Script__Run(self, sd.get_current_context()))
    }
  }
}

/// The origin, within a file, of a script.
impl<'s> ScriptOrigin<'s> {
  #[allow(clippy::too_many_arguments)]
  #[inline(always)]
  pub fn new(
    // TODO(littledivy): remove
    _scope: &mut HandleScope<'s, ()>,
    resource_name: Local<'s, Value>,
    resource_line_offset: i32,
    resource_column_offset: i32,
    resource_is_shared_cross_origin: bool,
    script_id: i32,
    source_map_url: Option<Local<'s, Value>>,
    resource_is_opaque: bool,
    is_wasm: bool,
    is_module: bool,
    host_defined_options: Option<Local<'s, Data>>,
  ) -> Self {
    unsafe {
      let mut buf = std::mem::MaybeUninit::<ScriptOrigin>::uninit();
      v8__ScriptOrigin__CONSTRUCT(
        &mut buf,
        &*resource_name,
        resource_line_offset,
        resource_column_offset,
        resource_is_shared_cross_origin,
        script_id,
        source_map_url
          .map(|l| &*l as *const Value)
          .unwrap_or_else(null),
        resource_is_opaque,
        is_wasm,
        is_module,
        host_defined_options
          .map(|l| &*l as *const Data)
          .unwrap_or_else(null),
      );
      buf.assume_init()
    }
  }

  #[inline(always)]
  pub fn script_id(&self) -> i32 {
    unsafe { v8__ScriptOrigin__ScriptId(self as *const _) }
  }

  #[inline(always)]
  pub fn resource_name(&self) -> Option<Local<'s, Value>> {
    unsafe {
      let ptr = v8__ScriptOrigin__ResourceName(self);
      Local::from_raw(ptr)
    }
  }

  #[inline(always)]
  pub fn source_map_url(&self) -> Option<Local<'s, Value>> {
    unsafe {
      let ptr = v8__ScriptOrigin__SourceMapUrl(self);
      Local::from_raw(ptr)
    }
  }
}