84 lines
1.6 KiB
Go
84 lines
1.6 KiB
Go
package objects
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import (
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"fmt"
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"github.com/d5/tengo"
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)
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// print(args...)
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func builtinPrint(args ...Object) (Object, error) {
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for _, arg := range args {
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if str, ok := arg.(*String); ok {
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fmt.Println(str.Value)
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} else {
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fmt.Println(arg.String())
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}
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}
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return nil, nil
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}
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// printf("format", args...)
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func builtinPrintf(args ...Object) (Object, error) {
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numArgs := len(args)
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if numArgs == 0 {
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return nil, ErrWrongNumArguments
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}
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format, ok := args[0].(*String)
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if !ok {
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return nil, ErrInvalidArgumentType{
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Name: "format",
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Expected: "string",
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Found: args[0].TypeName(),
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}
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}
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if numArgs == 1 {
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fmt.Print(format)
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return nil, nil
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}
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formatArgs := make([]interface{}, numArgs-1, numArgs-1)
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for idx, arg := range args[1:] {
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formatArgs[idx] = objectToInterface(arg)
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}
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fmt.Printf(format.Value, formatArgs...)
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return nil, nil
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}
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// sprintf("format", args...)
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func builtinSprintf(args ...Object) (Object, error) {
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numArgs := len(args)
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if numArgs == 0 {
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return nil, ErrWrongNumArguments
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}
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format, ok := args[0].(*String)
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if !ok {
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return nil, ErrInvalidArgumentType{
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Name: "format",
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Expected: "string",
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Found: args[0].TypeName(),
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}
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}
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if numArgs == 1 {
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return format, nil // okay to return 'format' directly as String is immutable
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}
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formatArgs := make([]interface{}, numArgs-1, numArgs-1)
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for idx, arg := range args[1:] {
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formatArgs[idx] = objectToInterface(arg)
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}
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s := fmt.Sprintf(format.Value, formatArgs...)
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if len(s) > tengo.MaxStringLen {
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return nil, ErrStringLimit
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}
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return &String{Value: s}, nil
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}
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