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schoenebeck |
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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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// 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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#ifndef LS_INSTRPARSERTREE_H |
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#define LS_INSTRPARSERTREE_H |
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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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namespace LinuxSampler { |
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class ParserContext; |
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class ExecContext; |
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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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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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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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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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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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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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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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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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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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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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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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class ConstIntVariable : public IntVariable { |
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public: |
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int value; |
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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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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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class IntArrayVariable : public Variable { |
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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 cast to string |
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ExprType_t exprType() const { return INT_ARR_EXPR; } |
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const int arraySize() const { return values.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<IntArrayVariable,Node> IntArrayVariableRef; |
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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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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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class ConstStringVariable : public StringVariable { |
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public: |
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String value; |
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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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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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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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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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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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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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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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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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// 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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bool isNoOperation(StatementRef statement); |
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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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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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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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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; } |
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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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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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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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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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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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}; |
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typedef Ref<OnRelease,Node> OnReleaseRef; |
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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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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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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); |
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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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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) { } |
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If(IntExprRef condition, StatementsRef statements) : |
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condition(condition), ifStatements(statements) { } |
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void dump(int level = 0); |
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int evalBranch(); |
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Statements* branch(uint i) const; |
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}; |
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typedef Ref<If,Node> IfRef; |
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struct CaseBranch { |
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IntExprRef from; |
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IntExprRef to; |
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StatementsRef statements; |
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}; |
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typedef std::vector<CaseBranch> CaseBranches; |
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class SelectCase : public BranchStatement { |
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IntExprRef select; |
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CaseBranches branches; |
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public: |
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SelectCase(IntExprRef select, const CaseBranches& branches) : select(select), branches(branches) { } |
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void dump(int level = 0); |
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int evalBranch(); |
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Statements* branch(uint i) const; |
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//void addBranch(IntExprRef condition, StatementsRef statements); |
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//void addBranch(IntExprRef from, IntExprRef to, StatementsRef statements); |
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|
|
//void addBranch(CaseBranchRef branch); |
405 |
|
|
//void addBranches(CaseBranchesRef branches); |
406 |
|
|
}; |
407 |
|
|
typedef Ref<SelectCase,Node> SelectCaseRef; |
408 |
|
|
|
409 |
|
|
class While : public Statement { |
410 |
|
|
IntExprRef m_condition; |
411 |
|
|
StatementsRef m_statements; |
412 |
|
|
public: |
413 |
|
|
While(IntExprRef condition, StatementsRef statements) : |
414 |
|
|
m_condition(condition), m_statements(statements) {} |
415 |
|
|
StmtType_t statementType() const { return STMT_LOOP; } |
416 |
|
|
void dump(int level = 0); |
417 |
|
|
bool evalLoopStartCondition(); |
418 |
|
|
Statements* statements() const; |
419 |
|
|
}; |
420 |
|
|
|
421 |
|
|
class Neg : public IntExpr { |
422 |
|
|
IntExprRef expr; |
423 |
|
|
public: |
424 |
|
|
Neg(IntExprRef expr) : expr(expr) { } |
425 |
|
|
int evalInt() { return (expr) ? -expr->evalInt() : 0; } |
426 |
|
|
void dump(int level = 0); |
427 |
|
|
bool isConstExpr() const { return expr->isConstExpr(); } |
428 |
|
|
}; |
429 |
|
|
typedef Ref<Neg,Node> NegRef; |
430 |
|
|
|
431 |
|
|
class ConcatString : public StringExpr { |
432 |
|
|
ExpressionRef lhs; |
433 |
|
|
ExpressionRef rhs; |
434 |
|
|
public: |
435 |
|
|
ConcatString(ExpressionRef lhs, ExpressionRef rhs) : lhs(lhs), rhs(rhs) {} |
436 |
|
|
String evalStr(); |
437 |
|
|
void dump(int level = 0); |
438 |
|
|
bool isConstExpr() const; |
439 |
|
|
}; |
440 |
|
|
typedef Ref<ConcatString,Node> ConcatStringRef; |
441 |
|
|
|
442 |
|
|
class Relation : public IntExpr { |
443 |
|
|
public: |
444 |
|
|
enum Type { |
445 |
|
|
LESS_THAN, |
446 |
|
|
GREATER_THAN, |
447 |
|
|
LESS_OR_EQUAL, |
448 |
|
|
GREATER_OR_EQUAL, |
449 |
|
|
EQUAL, |
450 |
|
|
NOT_EQUAL |
451 |
|
|
}; |
452 |
|
|
Relation(IntExprRef lhs, Type type, IntExprRef rhs) : |
453 |
|
|
lhs(lhs), rhs(rhs), type(type) {} |
454 |
|
|
int evalInt(); |
455 |
|
|
void dump(int level = 0); |
456 |
|
|
bool isConstExpr() const; |
457 |
|
|
private: |
458 |
|
|
IntExprRef lhs; |
459 |
|
|
IntExprRef rhs; |
460 |
|
|
Type type; |
461 |
|
|
}; |
462 |
|
|
typedef Ref<Relation,Node> RelationRef; |
463 |
|
|
|
464 |
|
|
class Or : virtual public BinaryOp, virtual public IntExpr { |
465 |
|
|
public: |
466 |
|
|
Or(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs,rhs) {} |
467 |
|
|
int evalInt(); |
468 |
|
|
void dump(int level = 0); |
469 |
|
|
}; |
470 |
|
|
typedef Ref<Or,Node> OrRef; |
471 |
|
|
|
472 |
|
|
class And : virtual public BinaryOp, virtual public IntExpr { |
473 |
|
|
public: |
474 |
|
|
And(IntExprRef lhs, IntExprRef rhs) : BinaryOp(lhs,rhs) {} |
475 |
|
|
int evalInt(); |
476 |
|
|
void dump(int level = 0); |
477 |
|
|
}; |
478 |
|
|
typedef Ref<And,Node> AndRef; |
479 |
|
|
|
480 |
|
|
class Not : virtual public IntExpr { |
481 |
|
|
IntExprRef expr; |
482 |
|
|
public: |
483 |
|
|
Not(IntExprRef expr) : expr(expr) {} |
484 |
|
|
int evalInt() { return !expr->evalInt(); } |
485 |
|
|
void dump(int level = 0); |
486 |
|
|
bool isConstExpr() const { return expr->isConstExpr(); } |
487 |
|
|
}; |
488 |
|
|
typedef Ref<Not,Node> NotRef; |
489 |
|
|
|
490 |
|
|
class ParserContext : public VMParserContext { |
491 |
|
|
public: |
492 |
|
|
struct Error { |
493 |
|
|
String txt; |
494 |
|
|
int line; |
495 |
|
|
}; |
496 |
|
|
typedef Error Warning; |
497 |
|
|
|
498 |
|
|
void* scanner; |
499 |
|
|
std::istream* is; |
500 |
|
|
std::vector<ParserIssue> errors; |
501 |
|
|
std::vector<ParserIssue> warnings; |
502 |
|
|
std::vector<ParserIssue> issues; |
503 |
|
|
|
504 |
|
|
std::set<String> builtinPreprocessorConditions; |
505 |
|
|
std::set<String> userPreprocessorConditions; |
506 |
|
|
|
507 |
|
|
std::map<String,VariableRef> vartable; |
508 |
|
|
int globalIntVarCount; |
509 |
|
|
int globalStrVarCount; |
510 |
|
|
int polyphonicIntVarCount; |
511 |
|
|
|
512 |
|
|
EventHandlersRef handlers; |
513 |
|
|
|
514 |
|
|
OnInitRef onInit; |
515 |
|
|
OnNoteRef onNote; |
516 |
|
|
OnReleaseRef onRelease; |
517 |
|
|
OnControllerRef onController; |
518 |
|
|
|
519 |
|
|
ArrayList<int>* globalIntMemory; |
520 |
|
|
ArrayList<String>* globalStrMemory; |
521 |
|
|
|
522 |
|
|
VMFunctionProvider* functionProvider; |
523 |
|
|
|
524 |
|
|
ExecContext* execContext; |
525 |
|
|
|
526 |
|
|
ParserContext(VMFunctionProvider* parent) : |
527 |
|
|
scanner(NULL), is(NULL), |
528 |
|
|
globalIntVarCount(0), globalStrVarCount(0), polyphonicIntVarCount(0), |
529 |
|
|
globalIntMemory(NULL), globalStrMemory(NULL), functionProvider(parent), |
530 |
|
|
execContext(NULL) |
531 |
|
|
{ |
532 |
|
|
} |
533 |
|
|
virtual ~ParserContext() { destroyScanner(); } |
534 |
|
|
VariableRef globalVar(const String& name); |
535 |
|
|
IntVariableRef globalIntVar(const String& name); |
536 |
|
|
StringVariableRef globalStrVar(const String& name); |
537 |
|
|
VariableRef variableByName(const String& name); |
538 |
|
|
void addErr(int line, const char* txt); |
539 |
|
|
void addWrn(int line, const char* txt); |
540 |
|
|
void createScanner(std::istream* is); |
541 |
|
|
void destroyScanner(); |
542 |
|
|
bool setPreprocessorCondition(const char* name); |
543 |
|
|
bool resetPreprocessorCondition(const char* name); |
544 |
|
|
bool isPreprocessorConditionSet(const char* name); |
545 |
|
|
}; |
546 |
|
|
|
547 |
|
|
class ExecContext : public VMExecContext { |
548 |
|
|
public: |
549 |
|
|
struct StackFrame { |
550 |
|
|
Statement* statement; |
551 |
|
|
int subindex; |
552 |
|
|
|
553 |
|
|
StackFrame() { |
554 |
|
|
statement = NULL; |
555 |
|
|
subindex = -1; |
556 |
|
|
} |
557 |
|
|
}; |
558 |
|
|
|
559 |
|
|
ArrayList<int> polyphonicIntMemory; |
560 |
|
|
VMExecStatus_t status; |
561 |
|
|
ArrayList<StackFrame> stack; |
562 |
|
|
int stackFrame; |
563 |
|
|
int suspendMicroseconds; |
564 |
|
|
|
565 |
|
|
ExecContext() : |
566 |
|
|
status(VM_EXEC_NOT_RUNNING), stackFrame(-1), suspendMicroseconds(0) {} |
567 |
|
|
|
568 |
|
|
virtual ~ExecContext() {} |
569 |
|
|
|
570 |
|
|
inline void pushStack(Statement* stmt) { |
571 |
|
|
stackFrame++; |
572 |
|
|
//printf("pushStack() -> %d\n", stackFrame); |
573 |
|
|
if (stackFrame >= stack.size()) return; |
574 |
|
|
stack[stackFrame].statement = stmt; |
575 |
|
|
stack[stackFrame].subindex = 0; |
576 |
|
|
} |
577 |
|
|
|
578 |
|
|
inline void popStack() { |
579 |
|
|
stack[stackFrame].statement = NULL; |
580 |
|
|
stack[stackFrame].subindex = -1; |
581 |
|
|
stackFrame--; |
582 |
|
|
//printf("popStack() -> %d\n", stackFrame); |
583 |
|
|
} |
584 |
|
|
|
585 |
|
|
inline void reset() { |
586 |
|
|
stack[0].statement = NULL; |
587 |
|
|
stack[0].subindex = -1; |
588 |
|
|
stackFrame = -1; |
589 |
|
|
} |
590 |
|
|
|
591 |
|
|
int suspensionTimeMicroseconds() const { |
592 |
|
|
return suspendMicroseconds; |
593 |
|
|
} |
594 |
|
|
}; |
595 |
|
|
|
596 |
|
|
} // namespace LinuxSampler |
597 |
|
|
|
598 |
|
|
#endif // LS_INSTRPARSERTREE_H |