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🌱 A minimal programming language and compiler. git.urbach.dev/cli/q
high-performance programming-language compiler
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// Jump continues program flow at the new 26 bit offset multiplied by 4.func Jump(offset int) (code uint32, encodable bool) { if offset < -33554432 || offset > 33554431 { return 0, false }
return 0b000101<<26 | uint32(offset&mask26), true}
// JumpIfEqual jumps if the result was equal.func JumpIfEqual(offset int) (code uint32, encodable bool) { return branchCond(EQ, offset)}
// JumpIfNotEqual jumps if the result was not equal.func JumpIfNotEqual(offset int) (code uint32, encodable bool) { return branchCond(NE, offset)}
// JumpIfGreater jumps if the result was greater.func JumpIfGreater(offset int) (code uint32, encodable bool) { return branchCond(GT, offset)}
// JumpIfGreaterEqual jumps if the result was greater or equal.func JumpIfGreaterEqual(offset int) (code uint32, encodable bool) { return branchCond(GE, offset)}
// JumpIfLess jumps if the result was less.func JumpIfLess(offset int) (code uint32, encodable bool) { return branchCond(LT, offset)}
// JumpIfLessEqual jumps if the result was less or equal.func JumpIfLessEqual(offset int) (code uint32, encodable bool) { return branchCond(LE, offset)}
// JumpIfUnsignedGreater jumps if the result was greater using unsigned comparison.func JumpIfUnsignedGreater(offset int) (code uint32, encodable bool) { return branchCond(HI, offset)}
// JumpIfUnsignedGreaterEqual jumps if the result was greater or equal using unsigned comparison.func JumpIfUnsignedGreaterEqual(offset int) (code uint32, encodable bool) { return branchCond(HS, offset)}
// JumpIfUnsignedLess jumps if the result was less using unsigned comparison.func JumpIfUnsignedLess(offset int) (code uint32, encodable bool) { return branchCond(LO, offset)}
// JumpIfUnsignedLessEqual jumps if the result was less or equal using unsigned comparison.func JumpIfUnsignedLessEqual(offset int) (code uint32, encodable bool) { return branchCond(LS, offset)}
// branchCond performs a conditional branch to the new 19 bit offset multiplied by 4.func branchCond(cond condition, offset int) (code uint32, encodable bool) { if offset < -262144 || offset > 262143 { return 0, false }
return 0b01010100<<24 | uint32(offset&mask19)<<5 | uint32(cond), true}