Golang cmd-internal-obj.Dconv类(方法)实例源码

// validImmediate checks that addr represents an immediate constant.
func (p *Parser) validImmediate(pseudo string, addr *obj.Addr) bool {
	if addr.Type != obj.TYPE_CONST || addr.Name != 0 || addr.Reg != 0 || addr.Index != 0 {
		p.errorf("%s: expected immediate constant; found %s", pseudo, obj.Dconv(&emptyProg, addr))
		return false
	}
	return true
}

func testOperandParser(t *testing.T, parser *Parser, tests []operandTest) {
	for _, test := range tests {
		parser.start(lex.Tokenize(test.input))
		addr := obj.Addr{}
		parser.operand(&addr)
		result := obj.Dconv(&emptyProg, &addr)
		if result != test.output {
			t.Errorf("fail at %s: got %s; expected %s\n", test.input, result, test.output)
		}
	}
}

// getRegister checks that addr represents a register and returns its value.
func (p *Parser) getRegister(prog *obj.Prog, op int, addr *obj.Addr) int16 {
	if addr.Type != obj.TYPE_REG || addr.Offset != 0 || addr.Name != 0 || addr.Index != 0 {
		p.errorf("%s: expected register; found %s", obj.Aconv(op), obj.Dconv(prog, addr))
	}
	return addr.Reg
}

// getImmediate checks that addr represents an immediate constant and returns its value.
func (p *Parser) getImmediate(prog *obj.Prog, op int, addr *obj.Addr) int64 {
	if addr.Type != obj.TYPE_CONST || addr.Name != 0 || addr.Reg != 0 || addr.Index != 0 {
		p.errorf("%s: expected immediate constant; found %s", obj.Aconv(op), obj.Dconv(prog, addr))
	}
	return addr.Offset
}

// getConstantPseudo checks that addr represents a plain constant and returns its value.
func (p *Parser) getConstantPseudo(pseudo string, addr *obj.Addr) int64 {
	if addr.Type != obj.TYPE_MEM || addr.Name != 0 || addr.Reg != 0 || addr.Index != 0 {
		p.errorf("%s: expected integer constant; found %s", pseudo, obj.Dconv(&emptyProg, addr))
	}
	return addr.Offset
}

// getConstant checks that addr represents a plain constant and returns its value.
func (p *Parser) getConstant(prog *obj.Prog, op obj.As, addr *obj.Addr) int64 {
	if addr.Type != obj.TYPE_MEM || addr.Name != 0 || addr.Reg != 0 || addr.Index != 0 {
		p.errorf("%s: expected integer constant; found %s", obj.Aconv(op), obj.Dconv(prog, addr))
	}
	return addr.Offset
}