github.com/n1ghtfa1l/go-vnt@v0.6.4-alpha.6/core/wavm/env_module.go (about)

     1  // Copyright 2019 The go-vnt Authors
     2  // This file is part of the go-vnt library.
     3  //
     4  // The go-vnt library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-vnt library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-vnt library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package wavm
    18  
    19  import (
    20  	"github.com/vntchain/vnt-wasm/wasm"
    21  )
    22  
    23  type EnvModule struct {
    24  	functions EnvFunctions
    25  	module    wasm.Module
    26  }
    27  
    28  func (m *EnvModule) InitModule(ctx *ChainContext) {
    29  	m.functions = EnvFunctions{}
    30  	m.functions.InitFuncTable(ctx)
    31  
    32  	funcTable := m.functions.GetFuncTable()
    33  
    34  	m.module = wasm.Module{
    35  		FunctionIndexSpace: make([]wasm.Function, 0),
    36  		Export: &wasm.SectionExports{
    37  			Entries: make(map[string]wasm.ExportEntry),
    38  		},
    39  	}
    40  
    41  	index := uint32(0)
    42  	for name, function := range funcTable {
    43  		m.module.Export.Entries[name] = wasm.ExportEntry{
    44  			FieldStr: name,
    45  			Kind:     wasm.ExternalFunction,
    46  			Index:    index,
    47  		}
    48  		m.module.FunctionIndexSpace = append(m.module.FunctionIndexSpace, function)
    49  		index++
    50  	}
    51  }
    52  
    53  func (m *EnvModule) GetModule() *wasm.Module {
    54  	return &m.module
    55  }
    56  
    57  func (m *EnvModule) GetEnvFunctions() EnvFunctions {
    58  	return m.functions
    59  }