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This commit is contained in:
Sergey Pepyakin
2017-12-11 18:52:07 +01:00
parent ebbfa6acf6
commit 8d3b32f4a6
6 changed files with 3 additions and 51 deletions
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40
src/interpreter/module.rs
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@ -1,14 +1,6 @@
use elements::{InitExpr, Opcode, Type, FunctionType, Internal, External, ResizableLimits, Local, ValueType, BlockType};
use elements::ResizableLimits;
use interpreter::Error;
use interpreter::runner::{FunctionContext};
use interpreter::VariableType;
use interpreter::RuntimeValue;
use common::stack::StackWithLimit;
/// Maximum number of entries in value stack.
const DEFAULT_VALUE_STACK_LIMIT: usize = 16384;
/// Maximum number of entries in frame stack.
const DEFAULT_FRAME_STACK_LIMIT: usize = 1024;
/// Execution context.
pub struct ExecutionParams<'a, St: 'static> {
@ -36,36 +28,6 @@ pub enum ItemIndex {
External(u32),
}
/// Caller context.
pub struct CallerContext<'a> {
/// Value stack limit
pub value_stack_limit: usize,
/// Frame stack limit
pub frame_stack_limit: usize,
/// Stack of the input parameters
pub value_stack: &'a mut StackWithLimit<RuntimeValue>,
}
impl<'a> CallerContext<'a> {
/// Top most args
pub fn topmost(args: &'a mut StackWithLimit<RuntimeValue>) -> Self {
CallerContext {
value_stack_limit: DEFAULT_VALUE_STACK_LIMIT,
frame_stack_limit: DEFAULT_FRAME_STACK_LIMIT,
value_stack: args,
}
}
/// Nested context
pub fn nested(outer: &'a mut FunctionContext) -> Self {
CallerContext {
value_stack_limit: outer.value_stack().limit() - outer.value_stack().len(),
frame_stack_limit: outer.frame_stack().limit() - outer.frame_stack().len(),
value_stack: &mut outer.value_stack,
}
}
}
pub fn check_limits(limits: &ResizableLimits) -> Result<(), Error> {
if let Some(maximum) = limits.maximum() {
if maximum < limits.initial() {