expr.test

linux系统下的音频通信

test expr-14.9 {CompilePrimaryExpr: literal primary} {expr {{abc\tde} > {abc\tdef}}} 0
test expr-14.10 {CompilePrimaryExpr: literal primary} {expr {{123}}} 123
test expr-14.11 {CompilePrimaryExpr: var reference primary} {
    set i 789
    list [expr {$i}] [expr $i]
} {789 789}
test expr-14.12 {CompilePrimaryExpr: var reference primary} {
    set i {789}    ;# test expr's aggressive conversion to numeric semantics
    list [expr {$i}] [expr $i]
} {789 789}
test expr-14.13 {CompilePrimaryExpr: var reference primary} {
    catch {unset a}
    set a(foo) foo
    set a(bar) bar
    set a(123) 123
    set result ""
    lappend result [expr $a(123)] [expr {$a(bar)<$a(foo)}]
    catch {unset a}
    set result
} {123 1}
test expr-14.14 {CompilePrimaryExpr: var reference primary} {
    set i 123    ;# test "$var.0" floating point conversion hack
    list [expr $i] [expr $i.0] [expr $i.0/12.0]
} {123 123.0 10.25}
test expr-14.15 {CompilePrimaryExpr: var reference primary} {
    set i 123
    catch {expr $i.2} msg
    set msg
} 123.2
test expr-14.16 {CompilePrimaryExpr: error compiling var reference primary} {
    catch {expr {$a(foo}} msg
    set errorInfo
} {missing )
    (parsing index for array "a")
    while compiling
"expr {$a(foo}"}
test expr-14.17 {CompilePrimaryExpr: string primary that looks like var ref} {
    expr $
} $
test expr-14.18 {CompilePrimaryExpr: quoted string primary} {
    expr "21"
} 21
test expr-14.19 {CompilePrimaryExpr: quoted string primary} {
    set i 123
    set x 456
    expr "$i+$x"
} 579
test expr-14.20 {CompilePrimaryExpr: quoted string primary} {
    set i 3
    set x 6
    expr 2+"$i.$x"
} 5.6
test expr-14.21 {CompilePrimaryExpr: error in quoted string primary} {
    catch {expr "[set]"} msg
    set msg
} {wrong # args: should be "set varName ?newValue?"}
test expr-14.22 {CompilePrimaryExpr: subcommand primary} {
    expr {[set i 123; set i]}
} 123
test expr-14.23 {CompilePrimaryExpr: error in subcommand primary} {
    catch {expr {[set]}} msg
    set errorInfo
} {wrong # args: should be "set varName ?newValue?"
    while compiling
"set"
    while compiling
"expr {[set]}"}
test expr-14.24 {CompilePrimaryExpr: error in subcommand primary} {
    catch {expr {[set i}} msg
    set errorInfo
} {missing close-bracket or close-brace
    while compiling
"set i"
    while compiling
"expr {[set i}"}
test expr-14.25 {CompilePrimaryExpr: math function primary} {
    format %.6g [expr exp(1.0)]
} 2.71828
test expr-14.26 {CompilePrimaryExpr: math function primary} {
    format %.6g [expr pow(2.0+0.1,3.0+0.1)]
} 9.97424
test expr-14.27 {CompilePrimaryExpr: error in math function primary} {
    catch {expr sinh::(2.0)} msg
    set errorInfo
} {syntax error in expression "sinh::(2.0)"
    while executing
"expr sinh::(2.0)"}
test expr-14.28 {CompilePrimaryExpr: subexpression primary} {
    expr 2+(3*4)
} 14
test expr-14.29 {CompilePrimaryExpr: error in subexpression primary} {
    catch {expr 2+(3*[set])} msg
    set errorInfo
} {wrong # args: should be "set varName ?newValue?"
    while compiling
"set"
    while compiling
"expr 2+(3*[set])"}
test expr-14.30 {CompilePrimaryExpr: missing paren in subexpression primary} {
    catch {expr 2+(3*(4+5)} msg
    set errorInfo
} {syntax error in expression "2+(3*(4+5)"
    while executing
"expr 2+(3*(4+5)"}
test expr-14.31 {CompilePrimaryExpr: just var ref in subexpression primary} {
    set i "5+10"
    list "[expr $i] == 15" "[expr ($i)] == 15" "[eval expr ($i)] == 15"
} {{15 == 15} {15 == 15} {15 == 15}}
test expr-14.32 {CompilePrimaryExpr: unexpected token} {
    catch {expr @} msg
    set errorInfo
} {syntax error in expression "@"
    while executing
"expr @"}

test expr-15.1 {CompileMathFuncCall: missing parenthesis} {
    catch {expr sinh2.0)} msg
    set errorInfo
} {syntax error in expression "sinh2.0)"
    while executing
"expr sinh2.0)"}
test expr-15.2 {CompileMathFuncCall: unknown math function} {
    catch {expr whazzathuh(1)} msg
    set errorInfo
} {unknown math function "whazzathuh"
    while executing
"expr whazzathuh(1)"}
test expr-15.3 {CompileMathFuncCall: too many arguments} {
    catch {expr sin(1,2,3)} msg
    set errorInfo
} {too many arguments for math function
    while executing
"expr sin(1,2,3)"}
test expr-15.4 {CompileMathFuncCall: ')' found before last required arg} {
    catch {expr sin()} msg
    set errorInfo
} {syntax error in expression "sin()"
    while executing
"expr sin()"}
test expr-15.5 {CompileMathFuncCall: too few arguments} {
    catch {expr pow(1)} msg
    set errorInfo
} {too few arguments for math function
    while executing
"expr pow(1)"}
test expr-15.6 {CompileMathFuncCall: missing ')'} {
    catch {expr sin(1} msg
    set errorInfo
} {syntax error in expression "sin(1"
    while executing
"expr sin(1"}
if $gotT1 {
    test expr-15.7 {CompileMathFuncCall: call registered math function} {
	expr 2*T1()
    } 246
    test expr-15.8 {CompileMathFuncCall: call registered math function} {
	expr T2()*3
    } 1035

    test expr-15.9 {CompileMathFuncCall: call registered math function} {
	expr T3(21, 37)
    } 37
    test expr-15.10 {CompileMathFuncCall: call registered math function} {
	expr T3(21.2, 37)
    } 37.0
    test expr-15.11 {CompileMathFuncCall: call registered math function} {
	expr T3(-21.2, -17.5)
    } -17.5
}

test expr-16.1 {GetToken: checks whether integer token starting with "0x" (e.g., "0x$") is invalid} {
    catch {unset a}
    set a(VALUE) ff15
    set i 123
    if {[expr 0x$a(VALUE)] & 16} {
        set i {}
    }
    set i
} {}
test expr-16.2 {GetToken: check for string literal in braces} {
    expr {{1}}
} {1}

# Check "expr" and computed command names.

test expr-17.1 {expr and computed command names} {
    set i 0
    set z expr
    $z 1+2
} 3

# Check correct conversion of operands to numbers: If the string looks like
# an integer, convert to integer. Otherwise, if the string looks like a
# double, convert to double.

test expr-18.1 {expr and conversion of operands to numbers} {
    set x [lindex 11 0]
    catch {expr int($x)}
    expr {$x}
} 11

# Check "expr" and interpreter result object resetting before appending
# an error msg during evaluation of exprs not in {}s

test expr-19.1 {expr and interpreter result object resetting} {
    proc p {} {
        set t  10.0
        set x  2.0
        set dx 0.2
        set f  {$dx-$x/10}
        set g  {-$x/5}
        set center 1.0
        set x  [expr $x-$center]
        set dx [expr $dx+$g]
        set x  [expr $x+$f+$center]
        set x  [expr $x+$f+$center]
        set y  [expr round($x)]
    }
    p
} 3

unset a