Crate wasmparser
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A simple event-driven library for parsing WebAssembly binary files (or streams).
The parser library reports events as they happen and only stores parsing information for a brief period of time, making it very fast and memory-efficient. The event-driven model, however, has some drawbacks. If you need random access to the entire WebAssembly data-structure, this is not the right library for you. You could however, build such a data-structure using this library.
Modules
Types relating to type information provided by validation.
Macros
A helper macro to conveniently iterate over all opcodes recognized by this
crate. This can be used to work with either the
Operator enumeration or
the VisitOperator trait if your use case uniformly handles all operators
the same way.Structs
A binary reader of the WebAssembly structures and types.
A binary reader for WebAssembly modules.
A br_table entries representation.
Represents an export in a WebAssembly component.
Represents a type of a function in a WebAssembly component.
Represents an import in a WebAssembly component
Represents an argument to instantiating a WebAssembly component.
Represents the start function in a WebAssembly component.
Represents an initialization expression.
A reader for custom sections of a WebAssembly module.
Represents a data segment in a core WebAssembly module.
Represents a core WebAssembly element segment.
Represents an export in a WebAssembly module.
A Wasm control flow block on the control flow stack during Wasm validation.
Resources necessary to perform validation of a function.
Represents a type of a function in a WebAssembly module.
Validation context for a WebAssembly function.
External handle to the internal allocations used during function validation.
Represents a WebAssembly function body.
Represents a core WebAssembly global.
Represents a global’s type.
An IEEE binary32 immediate floating point value, represented as a u32
containing the bit pattern.
An IEEE binary64 immediate floating point value, represented as a u64
containing the bit pattern.
Represents an import in a WebAssembly module.
Represents an indirect name in the names custom section.
Represents an argument to instantiating a WebAssembly module.
An iterator over locals in a function body.
A reader for a function body’s locals.
Represents a memory immediate in a WebAssembly memory instruction.
Represents a memory’s type.
Represents a name for an index from the names section.
An iterator over a function’s operators.
An iterator over a function’s operators with offsets.
A reader for a core WebAssembly function’s operators.
An incremental parser of a binary WebAssembly module or component.
A field from the producers custom section.
Represents a field value in the producers custom section.
A generic structure for reading a section of a WebAssembly binary which has
a limited number of items within it.
A consuming iterator of a
SectionLimited.An iterator over a limited section iterator.
Iterator/reader over the contents of a section which is composed of
subsections.
Represents a table’s type.
A tag’s type.
Represents a 128-bit vector value.
Validator for a WebAssembly binary module or component.
The implementation of
WasmModuleResources used by
Validator.Represents a case in a variant type.
Flags for features that are enabled for validation.
Iterator over the inputs of a Wasm function type.
Iterator over the outputs of a Wasm function type.
Enums
Represents a block type.
Represents a canonical function in a WebAssembly component.
Represents options for component functions.
A successful return payload from
Parser::parse.Represents an alias in a WebAssembly component.
Represents a defined type in a WebAssembly component.
Represents the kind of an external items of a WebAssembly component.
Represents the result type of a component function.
Represents an instance in a WebAssembly component.
Represents a name read from the names custom section.
Represents the kind of an outer alias in a WebAssembly component.
Represents a type in a WebAssembly component.
Represents part of a component type declaration in a WebAssembly component.
Represents a reference to a component type.
Represents a value type in a WebAssembly component.
Represents a core type in a WebAssembly component.
The kind of data segment.
Represents the items of an element segment.
The kind of element segment.
The supported encoding formats for the parser.
External types as defined here.
Represents an instance of a WebAssembly module.
Represents an instance type declaration in a WebAssembly component.
Represents the kind of an instantiation argument for a core instance.
Represents a module type declaration in a WebAssembly component.
Represents a name read from the names custom section.
Represents the kind of an outer core alias in a WebAssembly component.
Values that can be parsed from a WebAssembly module or component.
Represents a primitive value type.
Represents a tag kind.
Represents a type in a WebAssembly module.
Represents the type bounds for imports and exports.
Represents a reference to a type definition in a WebAssembly module.
Represents the types of values in a WebAssembly module.
Possible return values from
Validator::payload.Traits
A trait implemented for items that can be decoded directly from a
BinaryReader, or that which can be parsed from the WebAssembly binary
format.A trait implemented for subsections of another outer section.
Trait implemented by types that can visit all
Operator variants.Types that qualify as Wasm function types for validation purposes.
Types that qualify as Wasm validation database.
Functions
Test whether the given buffer contains a valid WebAssembly module or component,
analogous to
WebAssembly.validate in the JS API.Type Definitions
A reader for the code section of a WebAssembly module.
Section reader for the component alias section
A reader for the canonical section of a WebAssembly component.
A reader for the export section of a WebAssembly component.
A reader for the import section of a WebAssembly component.
A reader for the component instance section of a WebAssembly component.
Type used to iterate and parse the contents of the
component-name custom
section in compnents, similar to the name section of core modules.A reader for the type section of a WebAssembly component.
A reader for the core type section of a WebAssembly component.
A reader for the data section of a WebAssembly module.
A reader for the element section of a WebAssembly module.
A reader for the export section of a WebAssembly module.
A reader for the function section of a WebAssembly module.
A reader for the global section of a WebAssembly module.
A reader for the import section of a WebAssembly module.
Represents a reader for indirect names from the names custom section.
A reader for the core instance section of a WebAssembly component.
A reader for the memory section of a WebAssembly module.
Represents a name map from the names custom section.
A reader for the name custom section of a WebAssembly module.
A reader for the producers custom section of a WebAssembly module.
The result for
BinaryReader operations.A reader for the table section of a WebAssembly module.
A reader for the tags section of a WebAssembly module.
A reader for the type section of a WebAssembly module.