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/* -*- c++ -*- |
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* |
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* Copyright (c) 2014 Christian Schoenebeck and Andreas Persson |
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* |
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* http://www.linuxsampler.org |
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* |
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* This file is part of LinuxSampler and released under the same terms. |
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* See README file for details. |
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*/ |
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|
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// This header defines VM core implementation internal data types only used |
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// inside the parser and core VM implementation of this source directory. Not |
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// intended to be used in other source code parts (other source code |
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// directories) of the sampler. |
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|
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#ifndef LS_INSTRPARSERTREE_H |
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#define LS_INSTRPARSERTREE_H |
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|
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#include <vector> |
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#include <iostream> |
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#include <map> |
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#include <set> |
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#include "../common/global.h" |
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#include "../common/Ref.h" |
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#include "../common/ArrayList.h" |
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#include "common.h" |
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|
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namespace LinuxSampler { |
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|
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class ParserContext; |
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class ExecContext; |
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|
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enum StmtType_t { |
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STMT_LEAF, |
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STMT_LIST, |
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STMT_BRANCH, |
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STMT_LOOP, |
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}; |
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|
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class Node { |
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public: |
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Node(); |
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virtual ~Node(); |
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virtual void dump(int level = 0) = 0; |
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void printIndents(int n); |
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}; |
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typedef Ref<Node> NodeRef; |
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|
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class Expression : virtual public VMExpr, virtual public Node { |
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public: |
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virtual ExprType_t exprType() const = 0; |
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virtual bool isConstExpr() const = 0; |
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virtual String evalCastToStr() = 0; |
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}; |
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typedef Ref<Expression,Node> ExpressionRef; |
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|
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class IntExpr : virtual public VMIntExpr, virtual public Expression { |
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public: |
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ExprType_t exprType() const { return INT_EXPR; } |
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virtual int evalInt() = 0; |
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String evalCastToStr(); |
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}; |
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typedef Ref<IntExpr,Node> IntExprRef; |
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|
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class StringExpr : virtual public VMStringExpr, virtual public Expression { |
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public: |
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ExprType_t exprType() const { return STRING_EXPR; } |
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virtual String evalStr() = 0; |
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String evalCastToStr() { return evalStr(); } |
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}; |
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typedef Ref<StringExpr,Node> StringExprRef; |
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|
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class IntLiteral : virtual public IntExpr { |
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int value; |
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public: |
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IntLiteral(int value) : value(value) { } |
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int evalInt(); |
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void dump(int level = 0); |
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bool isConstExpr() const { return true; } |
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}; |
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typedef Ref<IntLiteral,Node> IntLiteralRef; |
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|
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class StringLiteral : virtual public StringExpr { |
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public: |
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String value; |
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StringLiteral(const String& value) : value(value) { } |
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bool isConstExpr() const { return true; } |
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void dump(int level = 0); |
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String evalStr() { return value; } |
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}; |
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typedef Ref<StringLiteral,Node> StringLiteralRef; |
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|
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class Args : virtual public VMFnArgs, virtual public Node { |
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public: |
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std::vector<ExpressionRef> args; |
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void add(ExpressionRef arg) { args.push_back(arg); } |
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void dump(int level = 0); |
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int argsCount() const { return args.size(); } |
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VMExpr* arg(int i) { return (i >= 0 && i < argsCount()) ? &*args.at(i) : NULL; } |
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}; |
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typedef Ref<Args,Node> ArgsRef; |
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|
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class Variable : virtual public Expression { |
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public: |
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virtual bool isConstExpr() const { return bConst; } |
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virtual void assign(Expression* expr) = 0; |
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protected: |
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Variable(ParserContext* ctx, int _memPos, bool _bConst) |
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: context(ctx), memPos(_memPos), bConst(_bConst) {} |
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|
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ParserContext* context; |
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int memPos; |
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bool bConst; |
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}; |
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typedef Ref<Variable,Node> VariableRef; |
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|
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class IntVariable : public Variable, virtual public IntExpr { |
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bool polyphonic; |
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public: |
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IntVariable(ParserContext* ctx); |
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void assign(Expression* expr); |
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int evalInt(); |
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void dump(int level = 0); |
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bool isPolyphonic() const { return polyphonic; } |
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protected: |
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IntVariable(ParserContext* ctx, bool polyphonic, bool bConst, int size = 1); |
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}; |
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typedef Ref<IntVariable,Node> IntVariableRef; |
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|
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class ConstIntVariable : public IntVariable { |
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public: |
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int value; |
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|
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ConstIntVariable(int value); |
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//ConstIntVariable(ParserContext* ctx, int value = 0); |
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void assign(Expression* expr); |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<ConstIntVariable,Node> ConstIntVariableRef; |
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|
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class BuiltInIntVariable : public IntVariable { |
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String name; |
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VMIntRelPtr* ptr; |
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public: |
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BuiltInIntVariable(const String& name, VMIntRelPtr* ptr); |
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void assign(Expression* expr); |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<BuiltInIntVariable,Node> BuiltInIntVariableRef; |
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|
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class PolyphonicIntVariable : public IntVariable { |
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public: |
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PolyphonicIntVariable(ParserContext* ctx); |
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void dump(int level = 0); |
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}; |
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typedef Ref<PolyphonicIntVariable,Node> PolyphonicIntVariableRef; |
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|
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class IntArrayVariable : public Variable, virtual public VMIntArrayExpr { |
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ArrayList<int> values; |
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public: |
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IntArrayVariable(ParserContext* ctx, int size); |
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IntArrayVariable(ParserContext* ctx, int size, ArgsRef values); |
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void assign(Expression* expr) {} // ignore scalar assignment |
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String evalCastToStr() { return ""; } // ignore scalar cast to string |
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ExprType_t exprType() const { return INT_ARR_EXPR; } |
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virtual int arraySize() const { return values.size(); } |
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virtual int evalIntElement(uint i); |
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virtual void assignIntElement(uint i, int value); |
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void dump(int level = 0); |
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protected: |
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IntArrayVariable(ParserContext* ctx, bool bConst); |
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}; |
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typedef Ref<IntArrayVariable,Node> IntArrayVariableRef; |
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|
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class BuiltInIntArrayVariable : public IntArrayVariable { |
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String name; |
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VMInt8Array* array; |
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public: |
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BuiltInIntArrayVariable(const String& name, VMInt8Array* array); |
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int arraySize() const { return array->size; } |
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int evalIntElement(uint i); |
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void assignIntElement(uint i, int value); |
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void dump(int level = 0); |
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}; |
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typedef Ref<BuiltInIntArrayVariable,Node> BuiltInIntArrayVariableRef; |
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|
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class IntArrayElement : public IntVariable { |
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IntArrayVariableRef array; |
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IntExprRef index; |
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public: |
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IntArrayElement(IntArrayVariableRef array, IntExprRef arrayIndex); |
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void assign(Expression* expr); |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<IntArrayElement,Node> IntArrayElementRef; |
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|
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class StringVariable : public Variable, virtual public StringExpr { |
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public: |
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StringVariable(ParserContext* ctx); |
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void assign(Expression* expr); |
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String evalStr(); |
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void dump(int level = 0); |
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protected: |
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StringVariable(ParserContext* ctx, bool bConst); |
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}; |
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typedef Ref<StringVariable,Node> StringVariableRef; |
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|
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class ConstStringVariable : public StringVariable { |
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public: |
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String value; |
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|
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ConstStringVariable(ParserContext* ctx, String value = ""); |
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void assign(Expression* expr); |
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String evalStr(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<ConstStringVariable,Node> ConstStringVariableRef; |
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|
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class BinaryOp : virtual public Expression { |
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protected: |
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ExpressionRef lhs; |
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ExpressionRef rhs; |
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public: |
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BinaryOp(ExpressionRef lhs, ExpressionRef rhs) : lhs(lhs), rhs(rhs) { } |
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bool isConstExpr() const { return lhs->isConstExpr() && rhs->isConstExpr(); } |
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}; |
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typedef Ref<BinaryOp,Node> BinaryOpRef; |
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|
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class Add : virtual public BinaryOp, virtual public IntExpr { |
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public: |
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Add(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs, rhs) { } |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<Add,Node> AddRef; |
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|
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class Sub : virtual public BinaryOp, virtual public IntExpr { |
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public: |
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Sub(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs, rhs) { } |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<Sub,Node> SubRef; |
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|
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class Mul : virtual public BinaryOp, virtual public IntExpr { |
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public: |
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Mul(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs, rhs) { } |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<Mul,Node> MulRef; |
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|
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class Div : virtual public BinaryOp, virtual public IntExpr { |
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public: |
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Div(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs, rhs) { } |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<Div,Node> DivRef; |
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|
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class Mod : virtual public BinaryOp, virtual public IntExpr { |
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public: |
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Mod(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs, rhs) { } |
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int evalInt(); |
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void dump(int level = 0); |
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}; |
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typedef Ref<Mod,Node> ModRef; |
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|
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class Statement : virtual public Node { |
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public: |
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virtual StmtType_t statementType() const = 0; |
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}; |
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typedef Ref<Statement,Node> StatementRef; |
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|
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// Just used by parser to avoid "not a statement" parser warning, will be |
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// filtered out by parser. So it will not be part of the VM tree after parsing. |
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class NoOperation : public Statement { |
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public: |
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NoOperation() : Statement() {} |
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StmtType_t statementType() const { return STMT_LEAF; } |
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void dump(int level = 0) {} |
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}; |
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typedef Ref<NoOperation,Node> NoOperationRef; |
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|
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bool isNoOperation(StatementRef statement); |
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|
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class LeafStatement : public Statement { |
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public: |
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virtual StmtFlags_t exec() = 0; |
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virtual StmtType_t statementType() const { return STMT_LEAF; } |
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}; |
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typedef Ref<LeafStatement,Node> LeafStatementRef; |
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|
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class Statements : public Statement { |
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std::vector<StatementRef> args; |
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public: |
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void add(StatementRef arg) { args.push_back(arg); } |
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void dump(int level = 0); |
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StmtType_t statementType() const { return STMT_LIST; } |
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virtual Statement* statement(uint i); |
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}; |
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typedef Ref<Statements,Node> StatementsRef; |
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|
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class BranchStatement : public Statement { |
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public: |
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StmtType_t statementType() const { return STMT_BRANCH; } |
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virtual int evalBranch() = 0; |
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virtual Statements* branch(uint i) const = 0; |
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}; |
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|
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class FunctionCall : virtual public LeafStatement, virtual public IntExpr, virtual public StringExpr { |
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String functionName; |
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ArgsRef args; |
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VMFunction* fn; |
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public: |
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FunctionCall(const char* function, ArgsRef args, VMFunction* fn) : |
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functionName(function), args(args), fn(fn) { } |
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void dump(int level = 0); |
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StmtFlags_t exec(); |
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int evalInt(); |
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String evalStr(); |
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bool isConstExpr() const { return false; } |
326 |
ExprType_t exprType() const; |
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String evalCastToStr(); |
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protected: |
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VMFnResult* execVMFn(); |
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}; |
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typedef Ref<FunctionCall,Node> FunctionCallRef; |
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|
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class EventHandler : virtual public Statements, virtual public VMEventHandler { |
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StatementsRef statements; |
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public: |
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void dump(int level = 0); |
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StmtFlags_t exec(); |
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EventHandler(StatementsRef statements) { this->statements = statements; } |
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Statement* statement(uint i) { return statements->statement(i); } |
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}; |
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typedef Ref<EventHandler,Node> EventHandlerRef; |
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|
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class OnNote : public EventHandler { |
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public: |
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OnNote(StatementsRef statements) : EventHandler(statements) {} |
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String eventHandlerName() const { return "note"; } |
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}; |
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typedef Ref<OnNote,Node> OnNoteRef; |
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|
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class OnInit : public EventHandler { |
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public: |
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OnInit(StatementsRef statements) : EventHandler(statements) {} |
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String eventHandlerName() const { return "init"; } |
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}; |
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typedef Ref<OnInit,Node> OnInitRef; |
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|
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class OnRelease : public EventHandler { |
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public: |
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OnRelease(StatementsRef statements) : EventHandler(statements) {} |
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String eventHandlerName() const { return "release"; } |
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}; |
362 |
typedef Ref<OnRelease,Node> OnReleaseRef; |
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|
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class OnController : public EventHandler { |
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public: |
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OnController(StatementsRef statements) : EventHandler(statements) {} |
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String eventHandlerName() const { return "controller"; } |
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}; |
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typedef Ref<OnController,Node> OnControllerRef; |
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|
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class EventHandlers : virtual public Node { |
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std::vector<EventHandlerRef> args; |
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public: |
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EventHandlers(); |
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~EventHandlers(); |
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void add(EventHandlerRef arg); |
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void dump(int level = 0); |
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int evalInt() { return 0; } |
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EventHandler* eventHandlerByName(const String& name) const; |
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EventHandler* eventHandler(uint index) const; |
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inline uint size() const { return args.size(); } |
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}; |
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typedef Ref<EventHandlers,Node> EventHandlersRef; |
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|
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class Assignment : public LeafStatement { |
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protected: |
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VariableRef variable; |
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ExpressionRef value; |
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public: |
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Assignment(VariableRef variable, ExpressionRef value); |
391 |
void dump(int level = 0); |
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StmtFlags_t exec(); |
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}; |
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typedef Ref<Assignment,Node> AssignmentRef; |
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|
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class If : public BranchStatement { |
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IntExprRef condition; |
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StatementsRef ifStatements; |
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StatementsRef elseStatements; |
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public: |
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If(IntExprRef condition, StatementsRef ifStatements, StatementsRef elseStatements) : |
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condition(condition), ifStatements(ifStatements), elseStatements(elseStatements) { } |
403 |
If(IntExprRef condition, StatementsRef statements) : |
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condition(condition), ifStatements(statements) { } |
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void dump(int level = 0); |
406 |
int evalBranch(); |
407 |
Statements* branch(uint i) const; |
408 |
}; |
409 |
typedef Ref<If,Node> IfRef; |
410 |
|
411 |
struct CaseBranch { |
412 |
IntExprRef from; |
413 |
IntExprRef to; |
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StatementsRef statements; |
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}; |
416 |
|
417 |
typedef std::vector<CaseBranch> CaseBranches; |
418 |
|
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class SelectCase : public BranchStatement { |
420 |
IntExprRef select; |
421 |
CaseBranches branches; |
422 |
public: |
423 |
SelectCase(IntExprRef select, const CaseBranches& branches) : select(select), branches(branches) { } |
424 |
void dump(int level = 0); |
425 |
int evalBranch(); |
426 |
Statements* branch(uint i) const; |
427 |
//void addBranch(IntExprRef condition, StatementsRef statements); |
428 |
//void addBranch(IntExprRef from, IntExprRef to, StatementsRef statements); |
429 |
//void addBranch(CaseBranchRef branch); |
430 |
//void addBranches(CaseBranchesRef branches); |
431 |
}; |
432 |
typedef Ref<SelectCase,Node> SelectCaseRef; |
433 |
|
434 |
class While : public Statement { |
435 |
IntExprRef m_condition; |
436 |
StatementsRef m_statements; |
437 |
public: |
438 |
While(IntExprRef condition, StatementsRef statements) : |
439 |
m_condition(condition), m_statements(statements) {} |
440 |
StmtType_t statementType() const { return STMT_LOOP; } |
441 |
void dump(int level = 0); |
442 |
bool evalLoopStartCondition(); |
443 |
Statements* statements() const; |
444 |
}; |
445 |
|
446 |
class Neg : public IntExpr { |
447 |
IntExprRef expr; |
448 |
public: |
449 |
Neg(IntExprRef expr) : expr(expr) { } |
450 |
int evalInt() { return (expr) ? -expr->evalInt() : 0; } |
451 |
void dump(int level = 0); |
452 |
bool isConstExpr() const { return expr->isConstExpr(); } |
453 |
}; |
454 |
typedef Ref<Neg,Node> NegRef; |
455 |
|
456 |
class ConcatString : public StringExpr { |
457 |
ExpressionRef lhs; |
458 |
ExpressionRef rhs; |
459 |
public: |
460 |
ConcatString(ExpressionRef lhs, ExpressionRef rhs) : lhs(lhs), rhs(rhs) {} |
461 |
String evalStr(); |
462 |
void dump(int level = 0); |
463 |
bool isConstExpr() const; |
464 |
}; |
465 |
typedef Ref<ConcatString,Node> ConcatStringRef; |
466 |
|
467 |
class Relation : public IntExpr { |
468 |
public: |
469 |
enum Type { |
470 |
LESS_THAN, |
471 |
GREATER_THAN, |
472 |
LESS_OR_EQUAL, |
473 |
GREATER_OR_EQUAL, |
474 |
EQUAL, |
475 |
NOT_EQUAL |
476 |
}; |
477 |
Relation(IntExprRef lhs, Type type, IntExprRef rhs) : |
478 |
lhs(lhs), rhs(rhs), type(type) {} |
479 |
int evalInt(); |
480 |
void dump(int level = 0); |
481 |
bool isConstExpr() const; |
482 |
private: |
483 |
IntExprRef lhs; |
484 |
IntExprRef rhs; |
485 |
Type type; |
486 |
}; |
487 |
typedef Ref<Relation,Node> RelationRef; |
488 |
|
489 |
class Or : virtual public BinaryOp, virtual public IntExpr { |
490 |
public: |
491 |
Or(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs,rhs) {} |
492 |
int evalInt(); |
493 |
void dump(int level = 0); |
494 |
}; |
495 |
typedef Ref<Or,Node> OrRef; |
496 |
|
497 |
class And : virtual public BinaryOp, virtual public IntExpr { |
498 |
public: |
499 |
And(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs,rhs) {} |
500 |
int evalInt(); |
501 |
void dump(int level = 0); |
502 |
}; |
503 |
typedef Ref<And,Node> AndRef; |
504 |
|
505 |
class Not : virtual public IntExpr { |
506 |
IntExprRef expr; |
507 |
public: |
508 |
Not(IntExprRef expr) : expr(expr) {} |
509 |
int evalInt() { return !expr->evalInt(); } |
510 |
void dump(int level = 0); |
511 |
bool isConstExpr() const { return expr->isConstExpr(); } |
512 |
}; |
513 |
typedef Ref<Not,Node> NotRef; |
514 |
|
515 |
class ParserContext : public VMParserContext { |
516 |
public: |
517 |
struct Error { |
518 |
String txt; |
519 |
int line; |
520 |
}; |
521 |
typedef Error Warning; |
522 |
|
523 |
void* scanner; |
524 |
std::istream* is; |
525 |
std::vector<ParserIssue> vErrors; |
526 |
std::vector<ParserIssue> vWarnings; |
527 |
std::vector<ParserIssue> vIssues; |
528 |
|
529 |
std::set<String> builtinPreprocessorConditions; |
530 |
std::set<String> userPreprocessorConditions; |
531 |
|
532 |
std::map<String,VariableRef> vartable; |
533 |
int globalIntVarCount; |
534 |
int globalStrVarCount; |
535 |
int polyphonicIntVarCount; |
536 |
|
537 |
EventHandlersRef handlers; |
538 |
|
539 |
OnInitRef onInit; |
540 |
OnNoteRef onNote; |
541 |
OnReleaseRef onRelease; |
542 |
OnControllerRef onController; |
543 |
|
544 |
ArrayList<int>* globalIntMemory; |
545 |
ArrayList<String>* globalStrMemory; |
546 |
int requiredMaxStackSize; |
547 |
|
548 |
VMFunctionProvider* functionProvider; |
549 |
|
550 |
ExecContext* execContext; |
551 |
|
552 |
ParserContext(VMFunctionProvider* parent) : |
553 |
scanner(NULL), is(NULL), |
554 |
globalIntVarCount(0), globalStrVarCount(0), polyphonicIntVarCount(0), |
555 |
globalIntMemory(NULL), globalStrMemory(NULL), requiredMaxStackSize(-1), |
556 |
functionProvider(parent), execContext(NULL) |
557 |
{ |
558 |
} |
559 |
virtual ~ParserContext(); |
560 |
VariableRef globalVar(const String& name); |
561 |
IntVariableRef globalIntVar(const String& name); |
562 |
StringVariableRef globalStrVar(const String& name); |
563 |
VariableRef variableByName(const String& name); |
564 |
void addErr(int line, const char* txt); |
565 |
void addWrn(int line, const char* txt); |
566 |
void createScanner(std::istream* is); |
567 |
void destroyScanner(); |
568 |
bool setPreprocessorCondition(const char* name); |
569 |
bool resetPreprocessorCondition(const char* name); |
570 |
bool isPreprocessorConditionSet(const char* name); |
571 |
std::vector<ParserIssue> issues() const OVERRIDE; |
572 |
std::vector<ParserIssue> errors() const OVERRIDE; |
573 |
std::vector<ParserIssue> warnings() const OVERRIDE; |
574 |
VMEventHandler* eventHandler(uint index) OVERRIDE; |
575 |
VMEventHandler* eventHandlerByName(const String& name) OVERRIDE; |
576 |
void registerBuiltInConstIntVariables(const std::map<String,int>& vars); |
577 |
void registerBuiltInIntVariables(const std::map<String,VMIntRelPtr*>& vars); |
578 |
void registerBuiltInIntArrayVariables(const std::map<String,VMInt8Array*>& vars); |
579 |
}; |
580 |
|
581 |
class ExecContext : public VMExecContext { |
582 |
public: |
583 |
struct StackFrame { |
584 |
Statement* statement; |
585 |
int subindex; |
586 |
|
587 |
StackFrame() { |
588 |
statement = NULL; |
589 |
subindex = -1; |
590 |
} |
591 |
}; |
592 |
|
593 |
ArrayList<int> polyphonicIntMemory; |
594 |
VMExecStatus_t status; |
595 |
ArrayList<StackFrame> stack; |
596 |
int stackFrame; |
597 |
int suspendMicroseconds; |
598 |
|
599 |
ExecContext() : |
600 |
status(VM_EXEC_NOT_RUNNING), stackFrame(-1), suspendMicroseconds(0) {} |
601 |
|
602 |
virtual ~ExecContext() {} |
603 |
|
604 |
inline void pushStack(Statement* stmt) { |
605 |
stackFrame++; |
606 |
//printf("pushStack() -> %d\n", stackFrame); |
607 |
if (stackFrame >= stack.size()) return; |
608 |
stack[stackFrame].statement = stmt; |
609 |
stack[stackFrame].subindex = 0; |
610 |
} |
611 |
|
612 |
inline void popStack() { |
613 |
stack[stackFrame].statement = NULL; |
614 |
stack[stackFrame].subindex = -1; |
615 |
stackFrame--; |
616 |
//printf("popStack() -> %d\n", stackFrame); |
617 |
} |
618 |
|
619 |
inline void reset() { |
620 |
stack[0].statement = NULL; |
621 |
stack[0].subindex = -1; |
622 |
stackFrame = -1; |
623 |
} |
624 |
|
625 |
int suspensionTimeMicroseconds() const OVERRIDE { |
626 |
return suspendMicroseconds; |
627 |
} |
628 |
}; |
629 |
|
630 |
} // namespace LinuxSampler |
631 |
|
632 |
#endif // LS_INSTRPARSERTREE_H |