forked from cerc-io/plugeth
289b30715d
This commit converts the dependency management from Godeps to the vendor folder, also switching the tool from godep to trash. Since the upstream tool lacks a few features proposed via a few PRs, until those PRs are merged in (if), use github.com/karalabe/trash. You can update dependencies via trash --update. All dependencies have been updated to their latest version. Parts of the build system are reworked to drop old notions of Godeps and invocation of the go vet command so that it doesn't run against the vendor folder, as that will just blow up during vetting. The conversion drops OpenCL (and hence GPU mining support) from ethash and our codebase. The short reasoning is that there's noone to maintain and having opencl libs in our deps messes up builds as go install ./... tries to build them, failing with unsatisfied link errors for the C OpenCL deps. golang.org/x/net/context is not vendored in. We expect it to be fetched by the user (i.e. using go get). To keep ci.go builds reproducible the package is "vendored" in build/_vendor.
117 lines
2.4 KiB
Go
117 lines
2.4 KiB
Go
// Package token defines constants representing the lexical tokens of JavaScript (ECMA5).
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package token
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import (
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"strconv"
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)
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// Token is the set of lexical tokens in JavaScript (ECMA5).
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type Token int
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// String returns the string corresponding to the token.
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// For operators, delimiters, and keywords the string is the actual
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// token string (e.g., for the token PLUS, the String() is
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// "+"). For all other tokens the string corresponds to the token
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// name (e.g. for the token IDENTIFIER, the string is "IDENTIFIER").
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//
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func (tkn Token) String() string {
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if 0 == tkn {
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return "UNKNOWN"
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}
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if tkn < Token(len(token2string)) {
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return token2string[tkn]
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}
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return "token(" + strconv.Itoa(int(tkn)) + ")"
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}
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// This is not used for anything
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func (tkn Token) precedence(in bool) int {
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switch tkn {
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case LOGICAL_OR:
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return 1
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case LOGICAL_AND:
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return 2
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case OR, OR_ASSIGN:
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return 3
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case EXCLUSIVE_OR:
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return 4
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case AND, AND_ASSIGN, AND_NOT, AND_NOT_ASSIGN:
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return 5
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case EQUAL,
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NOT_EQUAL,
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STRICT_EQUAL,
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STRICT_NOT_EQUAL:
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return 6
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case LESS, GREATER, LESS_OR_EQUAL, GREATER_OR_EQUAL, INSTANCEOF:
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return 7
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case IN:
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if in {
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return 7
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}
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return 0
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case SHIFT_LEFT, SHIFT_RIGHT, UNSIGNED_SHIFT_RIGHT:
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fallthrough
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case SHIFT_LEFT_ASSIGN, SHIFT_RIGHT_ASSIGN, UNSIGNED_SHIFT_RIGHT_ASSIGN:
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return 8
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case PLUS, MINUS, ADD_ASSIGN, SUBTRACT_ASSIGN:
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return 9
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case MULTIPLY, SLASH, REMAINDER, MULTIPLY_ASSIGN, QUOTIENT_ASSIGN, REMAINDER_ASSIGN:
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return 11
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}
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return 0
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}
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type _keyword struct {
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token Token
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futureKeyword bool
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strict bool
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}
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// IsKeyword returns the keyword token if literal is a keyword, a KEYWORD token
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// if the literal is a future keyword (const, let, class, super, ...), or 0 if the literal is not a keyword.
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//
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// If the literal is a keyword, IsKeyword returns a second value indicating if the literal
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// is considered a future keyword in strict-mode only.
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//
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// 7.6.1.2 Future Reserved Words:
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//
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// const
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// class
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// enum
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// export
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// extends
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// import
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// super
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//
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// 7.6.1.2 Future Reserved Words (strict):
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//
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// implements
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// interface
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// let
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// package
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// private
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// protected
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// public
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// static
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//
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func IsKeyword(literal string) (Token, bool) {
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if keyword, exists := keywordTable[literal]; exists {
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if keyword.futureKeyword {
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return KEYWORD, keyword.strict
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}
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return keyword.token, false
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}
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return 0, false
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}
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