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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libgo/] [go/] [html/] [template/] [context.go] - Blame information for rev 809

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1 747 jeremybenn 
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package template
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import (
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        "fmt"
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)
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// context describes the state an HTML parser must be in when it reaches the
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// portion of HTML produced by evaluating a particular template node.
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//
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// The zero value of type context is the start context for a template that
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// produces an HTML fragment as defined at
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// http://www.w3.org/TR/html5/the-end.html#parsing-html-fragments
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// where the context element is null.
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type context struct {
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        state   state
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        delim   delim
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        urlPart urlPart
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        jsCtx   jsCtx
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        attr    attr
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        element element
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        err     *Error
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}
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func (c context) String() string {
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        return fmt.Sprintf("{%v %v %v %v %v %v %v}", c.state, c.delim, c.urlPart, c.jsCtx, c.attr, c.element, c.err)
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}
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// eq returns whether two contexts are equal.
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func (c context) eq(d context) bool {
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        return c.state == d.state &&
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                c.delim == d.delim &&
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                c.urlPart == d.urlPart &&
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                c.jsCtx == d.jsCtx &&
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                c.attr == d.attr &&
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                c.element == d.element &&
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                c.err == d.err
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}
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// mangle produces an identifier that includes a suffix that distinguishes it
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// from template names mangled with different contexts.
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func (c context) mangle(templateName string) string {
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        // The mangled name for the default context is the input templateName.
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        if c.state == stateText {
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                return templateName
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        }
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        s := templateName + "$htmltemplate_" + c.state.String()
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        if c.delim != 0 {
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                s += "_" + c.delim.String()
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        }
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        if c.urlPart != 0 {
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                s += "_" + c.urlPart.String()
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        }
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        if c.jsCtx != 0 {
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                s += "_" + c.jsCtx.String()
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        }
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        if c.attr != 0 {
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                s += "_" + c.attr.String()
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        }
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        if c.element != 0 {
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                s += "_" + c.element.String()
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        }
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        return s
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}
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// state describes a high-level HTML parser state.
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//
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// It bounds the top of the element stack, and by extension the HTML insertion
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// mode, but also contains state that does not correspond to anything in the
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// HTML5 parsing algorithm because a single token production in the HTML
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// grammar may contain embedded actions in a template. For instance, the quoted
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// HTML attribute produced by
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//
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// is a single token in HTML's grammar but in a template spans several nodes.
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type state uint8
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const (
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        // stateText is parsed character data. An HTML parser is in
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        // this state when its parse position is outside an HTML tag,
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        // directive, comment, and special element body.
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        stateText state = iota
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        // stateTag occurs before an HTML attribute or the end of a tag.
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        stateTag
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        // stateAttrName occurs inside an attribute name.
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        // It occurs between the ^'s in ` ^name^ = value`.
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        stateAttrName
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        // stateAfterName occurs after an attr name has ended but before any
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        // equals sign. It occurs between the ^'s in ` name^ ^= value`.
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        stateAfterName
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        // stateBeforeValue occurs after the equals sign but before the value.
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        // It occurs between the ^'s in ` name =^ ^value`.
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        stateBeforeValue
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        // stateHTMLCmt occurs inside an .
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        stateHTMLCmt
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        // stateRCDATA occurs inside an RCDATA element (