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org.python.compiler.Module Maven / Gradle / Ivy
// Copyright (c) Corporation for National Research Initiatives
package org.python.compiler;
import java.io.*;
import java.util.*;
import org.python.parser.*;
import org.python.parser.ast.*;
import org.python.core.Py;
import org.python.core.PyException;
class PyIntegerConstant extends Constant implements ClassConstants
{
int value;
public PyIntegerConstant(int value) {
this.value = value;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyInteger);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyInteger, access);
c.iconst(value);
int mref_newInteger = c.pool.Methodref(
"org/python/core/Py",
"newInteger",
"(I)" + $pyInteger);
c.invokestatic(mref_newInteger);
c.putstatic(module.classfile.name, name, $pyInteger);
}
public int hashCode() {
return value;
}
public boolean equals(Object o) {
if (o instanceof PyIntegerConstant)
return ((PyIntegerConstant)o).value == value;
else
return false;
}
}
class PyFloatConstant extends Constant implements ClassConstants
{
double value;
public PyFloatConstant(double value) {
this.value = value;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyFloat);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyFloat, access);
c.ldc(c.pool.Double(value));
int mref_newFloat = c.pool.Methodref("org/python/core/Py",
"newFloat",
"(D)" + $pyFloat);
c.invokestatic(mref_newFloat);
c.putstatic(module.classfile.name, name, $pyFloat);
}
public int hashCode() {
return (int)value;
}
public boolean equals(Object o) {
if (o instanceof PyFloatConstant)
return ((PyFloatConstant)o).value == value;
else
return false;
}
}
class PyComplexConstant extends Constant implements ClassConstants
{
double value;
public PyComplexConstant(double value) {
this.value = value;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyComplex);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyComplex, access);
c.ldc(c.pool.Double(value));
int mref_newImaginary = c.pool.Methodref(
"org/python/core/Py",
"newImaginary",
"(D)" + $pyComplex);
c.invokestatic(mref_newImaginary);
c.putstatic(module.classfile.name, name, $pyComplex);
}
public int hashCode() {
return (int)value;
}
public boolean equals(Object o) {
if (o instanceof PyComplexConstant)
return ((PyComplexConstant)o).value == value;
else
return false;
}
}
class PyStringConstant extends Constant implements ClassConstants
{
String value;
public PyStringConstant(String value) {
this.value = value;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyStr);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyStr, access);
c.ldc(value);
int mref_newString = c.pool.Methodref(
"org/python/core/Py",
"newString",
"(" + $str + ")" + $pyStr);
c.invokestatic(mref_newString);
c.putstatic(module.classfile.name, name, $pyStr);
}
public int hashCode() {
return value.hashCode();
}
public boolean equals(Object o) {
if (o instanceof PyStringConstant)
return ((PyStringConstant)o).value.equals(value);
else
return false;
}
}
class PyUnicodeConstant extends Constant implements ClassConstants
{
String value;
public PyUnicodeConstant(String value) {
this.value = value;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyUnicode);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyUnicode, access);
c.ldc(value);
int mref_newString = c.pool.Methodref(
"org/python/core/Py",
"newUnicode",
"(" + $str + ")" + $pyUnicode);
c.invokestatic(mref_newString);
c.putstatic(module.classfile.name, name, $pyUnicode);
}
public int hashCode() {
return value.hashCode();
}
public boolean equals(Object o) {
if (o instanceof PyUnicodeConstant)
return ((PyUnicodeConstant)o).value.equals(value);
else
return false;
}
}
class PyLongConstant extends Constant implements ClassConstants
{
String value;
public PyLongConstant(String value) {
this.value = value;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyLong);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyLong, access);
c.ldc(value);
int mref_newLong = c.pool.Methodref(
"org/python/core/Py",
"newLong",
"(" + $str + ")" + $pyLong);
c.invokestatic(mref_newLong);
c.putstatic(module.classfile.name, name, $pyLong);
}
public int hashCode() {
return value.hashCode();
}
public boolean equals(Object o) {
if (o instanceof PyLongConstant)
return ((PyLongConstant)o).value.equals(value);
else return false;
}
}
class PyCodeConstant extends Constant implements ClassConstants
{
public String co_name;
public int argcount;
public String[] names;
public int id;
public int co_firstlineno;
public boolean arglist, keywordlist;
String fname;
// for nested scopes
public String[] cellvars;
public String[] freevars;
public int jy_npurecell;
public int moreflags;
public PyCodeConstant() { ;
}
public void get(Code c) throws IOException {
c.getstatic(module.classfile.name, name, $pyCode);
}
public void put(Code c) throws IOException {
module.classfile.addField(name, $pyCode, access);
c.iconst(argcount);
//Make all names
if (names != null) {
CodeCompiler.makeStrings(c, names, names.length);
} else { // classdef
CodeCompiler.makeStrings(c, null, 0);
}
c.aload(1);
c.ldc(co_name);
c.iconst(co_firstlineno);
c.iconst(arglist ? 1 : 0);
c.iconst(keywordlist ? 1 : 0);
int mref_self = c.pool.Fieldref(module.classfile.name,
"self",
"L"+module.classfile.name+";");
c.getstatic(mref_self);
//c.aconst_null();
c.iconst(id);
if (cellvars != null)
CodeCompiler.makeStrings(c, cellvars, cellvars.length);
else
c.aconst_null();
if (freevars != null)
CodeCompiler.makeStrings(c, freevars, freevars.length);
else
c.aconst_null();
c.iconst(jy_npurecell);
c.iconst(moreflags);
int mref_newCode = c.pool.Methodref(
"org/python/core/Py",
"newCode",
"(I" + $strArr + $str + $str + "IZZ" + $pyFuncTbl + "I" +
$strArr + $strArr + "II)" + $pyCode);
c.invokestatic(mref_newCode);
//c.aconst_null();
c.putstatic(module.classfile.name, name, $pyCode);
}
}
public class Module implements ClassConstants, CompilationContext
{
ClassFile classfile;
Constant filename;
String sfilename;
public Constant mainCode;
public boolean linenumbers;
public boolean setFile=true;
Future futures;
Hashtable scopes;
public Module(String name, String filename, boolean linenumbers) {
this.linenumbers = linenumbers;
classfile = new ClassFile(name, "org/python/core/PyFunctionTable",
ClassFile.SYNCHRONIZED | ClassFile.PUBLIC);
constants = new Hashtable();
sfilename = filename;
if (filename != null)
this.filename = PyString(filename);
else
this.filename = null;
codes = new Vector();
futures = new Future();
scopes = new Hashtable();
}
public Module(String name) {
this(name, name+".py", true);
}
// This block of code handles the pool of Python Constants
Hashtable constants;
private Constant findConstant(Constant c) {
Constant ret = (Constant)constants.get(c);
if (ret != null)
return ret;
ret = c;
c.module = this;
//More sophisticated name mappings might be nice
c.name = "_"+constants.size();
constants.put(ret, ret);
return ret;
}
public Constant PyInteger(int value) {
return findConstant(new PyIntegerConstant(value));
}
public Constant PyFloat(double value) {
return findConstant(new PyFloatConstant(value));
}
public Constant PyComplex(double value) {
return findConstant(new PyComplexConstant(value));
}
public Constant PyString(String value) {
return findConstant(new PyStringConstant(value));
}
public Constant PyUnicode(String value) {
return findConstant(new PyUnicodeConstant(value));
}
public Constant PyLong(String value) {
return findConstant(new PyLongConstant(value));
}
/*public PyCodeConstant PyCode(SimpleNode tree, String name,
ArgListCompiler ac,
boolean fast_locals, boolean class_body)
throws Exception {
return PyCode(tree, name, ac, fast_locals, class_body, false, 0);
}
public PyCodeConstant PyCode(SimpleNode tree, String name,
ArgListCompiler ac,
boolean fast_locals, boolean class_body,
int firstlineno)
throws Exception {
return PyCode(tree, name, ac, fast_locals, class_body, false,
firstlineno);
}
public PyCodeConstant PyCode(SimpleNode tree, String name,
ArgListCompiler ac,
boolean fast_locals, boolean class_body,
boolean printResults)
throws Exception {
return PyCode(tree, name, ac, fast_locals, class_body, printResults, 0);
}*/
Vector codes;
private boolean isJavaIdentifier(String s) {
char[] chars = s.toCharArray();
if (chars.length == 0)
return false;
if (!Character.isJavaIdentifierStart(chars[0]))
return false;
for(int i=1; i 0) {
ac.appendInitCode((Suite) tree);
}
if (scope != null) {
int nparamcell = scope.jy_paramcells.size();
if (nparamcell > 0) {
if (to_cell == 0) {
to_cell = classfile.pool.Methodref("org/python/core/PyFrame",
"to_cell","(II)V");
}
Hashtable tbl = scope.tbl;
Vector paramcells = scope.jy_paramcells;
for (int i = 0; i < nparamcell; i++) {
c.aload(1);
SymInfo syminf = (SymInfo)tbl.get(paramcells.elementAt(i));
c.iconst(syminf.locals_index);
c.iconst(syminf.env_index);
c.invokevirtual(to_cell);
}
}
}
compiler.parse(tree, c, fast_locals, className, classBody,
scope, cflags);
if (scope.generator) {
genswitch.setPosition();
c.aload(1);
if (compiler.f_lasti == 0) {
compiler.f_lasti = c.pool.Fieldref(
"org/python/core/PyFrame", "f_lasti", "I");
}
c.getfield(compiler.f_lasti);
Label[] yields = new Label[compiler.yields.size()+1];
yields[0] = start;
for (int i = 1; i < yields.length; i++) {
yields[i] = (Label) compiler.yields.elementAt(i-1);
}
c.tableswitch(start, 0, yields);
// XXX: Generate an error
}
// !classdef only
if (!classBody) code.names = toNameAr(compiler.names,false);
if (scope != null) {
code.cellvars = toNameAr(scope.cellvars,true);
code.freevars = toNameAr(scope.freevars,true);
code.jy_npurecell = scope.jy_npurecell;
}
if (compiler.optimizeGlobals) {
code.moreflags |= org.python.core.PyTableCode.CO_OPTIMIZED;
}
if (compiler.my_scope.generator) {
code.moreflags |= org.python.core.PyTableCode.CO_GENERATOR;
}
if (cflags != null) {
if (cflags.generator_allowed) {
code.moreflags |= org.python.core.PyTableCode.CO_GENERATOR_ALLOWED;
}
if (cflags.division) {
code.moreflags |= org.python.core.PyTableCode.CO_FUTUREDIVISION;
}
}
code.module = this;
code.name = code.fname;
return code;
}
//This block of code writes out the various standard methods
public void addInit() throws IOException {
Code c = classfile.addMethod("", "(Ljava/lang/String;)V", ClassFile.PUBLIC);
c.aload(0);
c.invokespecial(c.pool.Methodref("org/python/core/PyFunctionTable",
"",
"()V"));
addConstants(c);
}
public void addRunnable() throws IOException {
Code c = classfile.addMethod("getMain",
"()" + $pyCode,
ClassFile.PUBLIC);
mainCode.get(c);
c.areturn();
}
public void addMain() throws IOException {
Code c = classfile.addMethod("main", "(" + $strArr + ")V",
ClassFile.PUBLIC | ClassFile.STATIC);
c.new_(c.pool.Class(classfile.name));
c.dup();
c.ldc(classfile.name);
c.invokespecial(c.pool.Methodref(classfile.name, "", "(" + $str + ")V"));
c.aload(0);
c.invokestatic(c.pool.Methodref("org/python/core/Py", "runMain", "("
+ $pyRunnable + $strArr + ")V"));
c.return_();
}
public void addConstants(Code c) throws IOException {
classfile.addField("self", "L"+classfile.name+";",
ClassFile.STATIC|ClassFile.FINAL);
c.aload(0);
c.putstatic(c.pool.Fieldref(classfile.name,
"self",
"L"+classfile.name+";"));
Enumeration e = constants.elements();
while (e.hasMoreElements()) {
Constant constant = (Constant)e.nextElement();
constant.put(c);
}
for(int i=0; i