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tritaotritao
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Big update to NAPI generator with initial support for basic examples.
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9 files changed

+2184
-22
lines changed

9 files changed

+2184
-22
lines changed

‎src/Generator/Extensions/FunctionExtensions.cs

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@@ -0,0 +1,16 @@
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using CppSharp.AST;
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namespace CppSharp.Extensions
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{
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public static class FunctionExtensions
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{
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public static bool IsNativeMethod(this Function function)
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{
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var method = function as Method;
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if (method == null)
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return false;
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return method.Conversion == MethodConversionKind.None;
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}
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}
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}

‎src/Generator/Extensions/PrimitiveTypeExtensions.cs

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@@ -7,6 +7,27 @@ namespace CppSharp.Extensions
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{
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public static class PrimitiveTypeExtensions
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{
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public static bool IsIntegerType(this PrimitiveType type)
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{
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switch (type)
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{
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case PrimitiveType.Char:
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case PrimitiveType.SChar:
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case PrimitiveType.UChar:
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case PrimitiveType.Short:
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case PrimitiveType.UShort:
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case PrimitiveType.Int:
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case PrimitiveType.UInt:
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case PrimitiveType.Long:
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case PrimitiveType.ULong:
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case PrimitiveType.LongLong:
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case PrimitiveType.ULongLong:
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return true;
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default:
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return false;
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}
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}
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public static (uint Width, uint Alignment) GetInfo(this PrimitiveType primitive, ParserTargetInfo targetInfo, out bool signed)
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{
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signed = false;

‎src/Generator/Generators/C/NAPI/NAPIGenerator.cs

Lines changed: 18 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -31,16 +31,31 @@ public override List<GeneratorOutput> Generate()
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}
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}
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var helpers = GenerateHelpers();
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OnUnitGenerated(helpers);
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outputs.Add(helpers);
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return outputs;
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}
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public GeneratorOutput GenerateHelpers()
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{
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var helpersGen = new NAPIHelpers(Context);
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helpersGen.Process();
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var output = new GeneratorOutput
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{
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TranslationUnit = new TranslationUnit { FilePath = "NAPIHelpers.h" },
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Outputs = new List<CodeGenerator> { helpersGen }
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};
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return output;
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}
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public override List<CodeGenerator> Generate(IEnumerable<TranslationUnit> units)
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{
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var outputs = new List<CodeGenerator>();
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var header = new NAPIHeaders(Context, units);
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outputs.Add(header);
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var source = new NAPISources(Context, units);
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outputs.Add(source);
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‎src/Generator/Generators/C/NAPI/NAPIHeaders.cs

Lines changed: 2 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1,4 +1,5 @@
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using System.Collections.Generic;
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using System.IO;
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using CppSharp.AST;
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namespace CppSharp.Generators.Cpp
@@ -17,7 +18,7 @@ public NAPIHeaders(BindingContext context, IEnumerable<TranslationUnit> units)
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public override void Process()
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{
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base.Process();
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return;
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}
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}
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}

‎src/Generator/Generators/C/NAPI/NAPIHelpers.cs

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using System.Collections.Generic;
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using System.IO;
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using CppSharp.AST;
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using CppSharp.Generators.C;
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namespace CppSharp.Generators.Cpp
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{
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/// <summary>
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/// Generates a common Node N-API C/C++ common files.
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/// N-API documentation: https://nodejs.org/api/n-api.html
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/// </summary>
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public class NAPIHelpers : CppHeaders
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{
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public NAPIHelpers(BindingContext context)
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: base(context, null)
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{
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}
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public override void Process()
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{
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GenerateFilePreamble(CommentKind.BCPL);
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WriteLine("#pragma once");
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NewLine();
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WriteInclude("math.h", CInclude.IncludeKind.Angled);
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WriteInclude("limits.h", CInclude.IncludeKind.Angled);
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NewLine();
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GenerateHelpers();
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return;
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}
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private void GenerateHelpers()
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{
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WriteLine(@"#define NAPI_CALL(env, call) \
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do { \
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napi_status status = (call); \
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if (status != napi_ok) { \
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const napi_extended_error_info* error_info = NULL; \
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napi_get_last_error_info((env), &error_info); \
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bool is_pending; \
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napi_is_exception_pending((env), &is_pending); \
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if (!is_pending) { \
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const char* message = (error_info->error_message == NULL) \
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? ""empty error message"" \
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: error_info->error_message; \
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napi_throw_error((env), NULL, message); \
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return NULL; \
50+
} \
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} \
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} while(0)");
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NewLine();
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55+
WriteLine(@"#define NAPI_CALL_NORET(env, call) \
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do { \
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napi_status status = (call); \
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if (status != napi_ok) { \
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const napi_extended_error_info* error_info = NULL; \
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napi_get_last_error_info((env), &error_info); \
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bool is_pending; \
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napi_is_exception_pending((env), &is_pending); \
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if (!is_pending) { \
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const char* message = (error_info->error_message == NULL) \
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? ""empty error message"" \
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: error_info->error_message; \
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napi_throw_error((env), NULL, message); \
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return; \
69+
} \
70+
} \
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} while(0)");
72+
NewLine();
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74+
WriteLine(@"static int napi_is_int32(napi_env env, napi_value value, int* integer) {
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double temp = 0;
76+
if (
77+
// We get the value as a double so we can check for NaN, Infinity and float:
78+
// https://github.com/nodejs/node/issues/26323
79+
napi_get_value_double(env, value, &temp) != napi_ok ||
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// Reject NaN:
81+
isnan(temp) ||
82+
// Reject Infinity and avoid undefined behavior when casting double to int:
83+
// https://groups.google.com/forum/#!topic/comp.lang.c/rhPzd4bgKJk
84+
temp < INT_MIN ||
85+
temp > INT_MAX ||
86+
// Reject float by casting double to int:
87+
(double) ((int) temp) != temp
88+
) {
89+
//napi_throw_error(env, NULL, ""argument must be an integer"");
90+
return 0;
91+
}
92+
if (integer)
93+
*integer = (int) temp;
94+
return 1;
95+
}");
96+
NewLine();
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98+
WriteLine(@"static int napi_is_uint32(napi_env env, napi_value value, int* integer) {
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double temp = 0;
100+
if (
101+
// We get the value as a double so we can check for NaN, Infinity and float:
102+
// https://github.com/nodejs/node/issues/26323
103+
napi_get_value_double(env, value, &temp) != napi_ok ||
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// Reject NaN:
105+
isnan(temp) ||
106+
// Reject Infinity and avoid undefined behavior when casting double to int:
107+
// https://groups.google.com/forum/#!topic/comp.lang.c/rhPzd4bgKJk
108+
temp < 0 ||
109+
temp > ULONG_MAX ||
110+
// Reject float by casting double to int:
111+
(double) ((unsigned long) temp) != temp
112+
) {
113+
//napi_throw_error(env, NULL, ""argument must be an integer"");
114+
return 0;
115+
}
116+
if (integer)
117+
*integer = (int) temp;
118+
return 1;
119+
}");
120+
NewLine();
121+
122+
WriteLine(@"#define NAPI_IS_BOOL(valuetype) (valuetype == napi_boolean)");
123+
WriteLine(@"#define NAPI_IS_NULL(valuetype) (valuetype == napi_null)");
124+
WriteLine(@"#define NAPI_IS_NUMBER(valuetype) (valuetype == napi_number)");
125+
WriteLine(@"#define NAPI_IS_BIGINT(valuetype) (valuetype == napi_bigint)");
126+
WriteLine(@"#define NAPI_IS_INT32(valuetype, value) (NAPI_IS_NUMBER(valuetype) && napi_is_int32(env, value, nullptr))");
127+
WriteLine(@"#define NAPI_IS_UINT32(valuetype, value) (NAPI_IS_NUMBER(valuetype) && napi_is_uint32(env, value, nullptr))");
128+
WriteLine(@"#define NAPI_IS_INT64(valuetype, value) (NAPI_IS_BIGINT(valuetype))");
129+
WriteLine(@"#define NAPI_IS_UINT64(valuetype, value) (NAPI_IS_BIGINT(valuetype))");
130+
NewLine();
131+
}
132+
}
133+
}

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