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Add support for the Go programming language.

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@12108 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
Ian Lance Taylor 2010-06-10 01:13:31 +00:00
commit 5af2978f77
259 changed files with 16159 additions and 14 deletions
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16
Examples/go/constants/Makefile Normal file
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TOP = ../..
SWIG = $(TOP)/../preinst-swig
CXXSRCS =
TARGET = example
INTERFACE = example.i
SWIGOPT =
all::
$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
SWIGOPT='$(SWIGOPT)' TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go
clean::
$(MAKE) -f $(TOP)/Makefile go_clean
check: all
$(MAKE) -f $(TOP)/Makefile TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' go_run

44
Examples/go/constants/example.go Normal file
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/* ----------------------------------------------------------------------------
* This file was automatically generated by SWIG (http://www.swig.org).
* Version 2.0.1
*
* This file is not intended to be easily readable and contains a number of
* coding conventions designed to improve portability and efficiency. Do not make
* changes to this file unless you know what you are doing--modify the SWIG
* interface file instead.
* ----------------------------------------------------------------------------- */
package example
type _swig_fnptr *byte
type _swig_memberptr *byte
func _swig_allocatememory(int) *byte
func _swig_internal_allocate(len int) *byte {
return _swig_allocatememory(len)
}
func _swig_allocatestring(*byte, int) string
func _swig_internal_makegostring(p *byte, l int) string {
return _swig_allocatestring(p, l)
}
func _swig_internal_gopanic(p *byte, l int) {
panic(_swig_allocatestring(p, l))
}
const ICONST int = 42
const FCONST float64 = 2.1828
const CCONST byte = 'x'
func _swig_getCCONST2() byte
var CCONST2 byte = _swig_getCCONST2()
const SCONST string = "Hello World"
func _swig_getSCONST2() string
var SCONST2 string = _swig_getSCONST2()
func _swig_getEXPR() float64
var EXPR float64 = _swig_getEXPR()
const Iconst int = 37
const Fconst float64 = 3.14

25
Examples/go/constants/example.i Normal file
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/* File : example.i */
%module example
/* A few preprocessor macros */
#define ICONST 42
#define FCONST 2.1828
#define CCONST 'x'
#define CCONST2 '\n'
#define SCONST "Hello World"
#define SCONST2 "\"Hello World\""
/* This should work just fine */
#define EXPR ICONST + 3*(FCONST)
/* This shouldn't do anything */
#define EXTERN extern
/* Neither should this (BAR isn't defined) */
#define FOO (ICONST + BAR)
/* The following directives also produce constants */
%constant int iconst = 37;
%constant double fconst = 3.14;

55
Examples/go/constants/index.html Normal file
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<html>
<head>
<title>SWIG:Examples:go:constants</title>
</head>
<body bgcolor="#ffffff">
<tt>SWIG/Examples/go/constants/</tt>
<hr>
<H2>Wrapping C Constants</H2>
<p>
When SWIG encounters C preprocessor macros and C declarations that
look like constants, it creates a Go constant with an identical value.
Click <a href="example.i">here</a> to see a SWIG interface with some
constant declarations in it.
<h2>Accessing Constants from Go</h2>
Click <a href="../../../Doc/Manual/Go.html#go_constants">here</a> for
the section on constants in the SWIG and Go documentation.
<p>
Click <a href="runme.go">here</a> to see a Go program that prints out
the values of the constants contained in the above file.</p>
<h2>Key points</h2>
<ul>
<li>All names are capitalized to make them visible.
<li>The values of preprocessor macros are converted into Go constants.
<li>C string literals such as "Hello World" are converted into Go strings.
<li>Macros that are not fully defined are simply ignored. For example:
<blockquote>
<pre>
#define EXTERN extern
</pre>
</blockquote>
is ignored because SWIG has no idea what type of variable this would be.
<p>
<li>Expressions are allowed provided that all of their components are
defined. Otherwise, the constant is ignored.
<li>Certain C declarations involving 'const' are also turned into Go
constants.
<li>The constants that appear in a SWIG interface file do not have to
appear in any sort of matching C source file since the creation of a
constant does not require linkage to a stored value (i.e., a value
held in a C global variable or memory location).
</ul>
<hr>
</body>
</html>

18
Examples/go/constants/runme.go Normal file
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package main
import (
"fmt"
"./example"
)
func main() {
fmt.Println("ICONST = ", example.ICONST, " (should be 42)")
fmt.Println("FCONST = ", example.FCONST, " (should be 2.1828)")
fmt.Printf("CCONST = %c (should be 'x')\n", example.CCONST)
fmt.Printf("CCONST2 = %c(this should be on a new line)\n", example.CCONST2)
fmt.Println("SCONST = ", example.SCONST, " (should be 'Hello World')")
fmt.Println("SCONST2 = ", example.SCONST2, " (should be '\"Hello World\"')")
fmt.Println("EXPR = ", example.EXPR, " (should be 48.5484)")
fmt.Println("iconst = ", example.Iconst, " (should be 37)")
fmt.Println("fconst = ", example.Fconst, " (should be 3.14)")
}