asIntegral

Function parameters

Parameters

self:Value

Expressions can be evaluated in different contexts, each requiring its own set of inputs.

Types

Context: Expressions can be evaluated in different contexts, each requiring its own set of inputs.
Options

A stack machine that can decode and run DWARF expressions.

Functions

StackMachine: A stack machine that can decode and run DWARF expressions.
Builder

Error sets in this namespace

Error Sets

Error

Source

Implementation

pub fn asIntegral(self: Value) !addr_type {
    return switch (self) {
        .generic => |v| v,

        // TODO: For these two prongs, look up the type and assert it's integral?
        .regval_type => |regval_type| regval_type.value,
        .const_type => |const_type| {
            const value: u64 = switch (const_type.value_bytes.len) {
                1 => mem.readInt(u8, const_type.value_bytes[0..1], native_endian),
                2 => mem.readInt(u16, const_type.value_bytes[0..2], native_endian),
                4 => mem.readInt(u32, const_type.value_bytes[0..4], native_endian),
                8 => mem.readInt(u64, const_type.value_bytes[0..8], native_endian),
                else => return error.InvalidIntegralTypeSize,
            };

            return std.math.cast(addr_type, value) orelse error.TruncatedIntegralType;
        },
    };
}