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annotate utils.c @ 33:3f8a2db496f5

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Changed PYM_pyObjectToJsval() to simply return an int status/error code; this way callers don't have to worry about decreasing the reference count of a Py_NONE.
author Atul Varma <varmaa@toolness.com>
date Tue, 30 Jun 2009 22:42:48 -0700
parents abf14cba9ef5
children 5d3d3b25f23f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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11
551ba05fe6ad factored out Runtime, Context, and utils into separate files.
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1 #include "utils.h"
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2 #include "undefined.h"
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3 #include "object.h"
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4
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5 PyObject *PYM_error;
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6
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7 static int
32
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8 PYM_doubleToJsval(JSContext *cx,
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9 double number,
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10 jsval *rval)
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11 {
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12 jsdouble *numberAsJsdouble = JS_NewDouble(cx, number);
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13 if (numberAsJsdouble == NULL) {
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14 PyErr_SetString(PYM_error, "JS_NewDouble() failed");
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15 return -1;
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16 }
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17 *rval = DOUBLE_TO_JSVAL(numberAsJsdouble);
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18 return 0;
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19 }
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20
33
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21 int
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22 PYM_pyObjectToJsval(JSContext *cx,
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23 PyObject *object,
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24 jsval *rval)
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25 {
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26 #ifndef Py_UNICODE_WIDE
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27 if (PyUnicode_Check(object)) {
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28 Py_UNICODE *string = PyUnicode_AsUnicode(object);
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29 JSString *jsString = JS_NewUCStringCopyZ(cx,
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30 (const jschar *) string);
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31 if (jsString == NULL) {
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32 PyErr_SetString(PYM_error, "JS_NewUCStringCopyZ() failed");
33
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33 return -1;
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34 }
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36 *rval = STRING_TO_JSVAL(jsString);
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37 return 0;
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38 }
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39 #endif
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40
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41 if (PyInt_Check(object)) {
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42 long number = PyInt_AS_LONG(object);
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43 if (INT_FITS_IN_JSVAL(number)) {
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44 *rval = INT_TO_JSVAL(number);
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45 return 0;
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46 } else
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47 return PYM_doubleToJsval(cx, number, rval);
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48 }
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49
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50 if (PyFloat_Check(object))
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51 return PYM_doubleToJsval(cx, PyFloat_AS_DOUBLE(object), rval);
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52
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53 // TODO: Support more types.
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54 PyErr_SetString(PyExc_NotImplementedError,
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55 "Data type conversion not implemented.");
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56 return -1;
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57 }
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58
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59 PyObject *
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60 PYM_jsvalToPyObject(PYM_JSContextObject *context,
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61 jsval value) {
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62 if (JSVAL_IS_INT(value))
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63 return PyInt_FromLong(JSVAL_TO_INT(value));
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64
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65 if (JSVAL_IS_DOUBLE(value)) {
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66 jsdouble *doubleRef = JSVAL_TO_DOUBLE(value);
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67 return PyFloat_FromDouble(*doubleRef);
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68 }
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69
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70 if (value == JSVAL_FALSE)
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71 Py_RETURN_FALSE;
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72
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73 if (value == JSVAL_TRUE)
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74 Py_RETURN_TRUE;
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75
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76 if (JSVAL_IS_NULL(value))
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77 Py_RETURN_NONE;
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78
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79 if (JSVAL_IS_VOID(value))
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80 Py_RETURN_UNDEFINED;
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81
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82 if (JSVAL_IS_STRING(value)) {
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83 // Strings in JS are funky: think of them as 16-bit versions of
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84 // Python 2.x's 'str' type. Whether or not they're valid UTF-16
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85 // is entirely up to the client code.
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86
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87 // TODO: Instead of ignoring errors, consider actually treating
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88 // the string as a raw character buffer.
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89 JSString *str = JSVAL_TO_STRING(value);
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90 const char *chars = (const char *) JS_GetStringChars(str);
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91 size_t length = JS_GetStringLength(str);
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92
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93 // We're multiplying length by two since Python wants the number
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94 // of bytes, not the number of 16-bit characters.
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95 return PyUnicode_DecodeUTF16(chars, length * 2, "ignore", NULL);
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96 }
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97
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98 if (JSVAL_IS_OBJECT(value))
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99 return (PyObject *) PYM_newJSObject(context, JSVAL_TO_OBJECT(value));
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100
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101 // TODO: Support more types.
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102 PyErr_SetString(PyExc_NotImplementedError,
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103 "Data type conversion not implemented.");
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104 return NULL;
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105 }