no git submodules

vendor/github.com/flosch/pongo2/v4/context.go

@@ -0,0 +1,137 @@
+package pongo2
+
+import (
+	"fmt"
+	"regexp"
+
+	"errors"
+)
+
+var reIdentifiers = regexp.MustCompile("^[a-zA-Z0-9_]+$")
+
+var autoescape = true
+
+func SetAutoescape(newValue bool) {
+	autoescape = newValue
+}
+
+// A Context type provides constants, variables, instances or functions to a template.
+//
+// pongo2 automatically provides meta-information or functions through the "pongo2"-key.
+// Currently, context["pongo2"] contains the following keys:
+//  1. version: returns the version string
+//
+// Template examples for accessing items from your context:
+//     {{ myconstant }}
+//     {{ myfunc("test", 42) }}
+//     {{ user.name }}
+//     {{ pongo2.version }}
+type Context map[string]interface{}
+
+func (c Context) checkForValidIdentifiers() *Error {
+	for k, v := range c {
+		if !reIdentifiers.MatchString(k) {
+			return &Error{
+				Sender:    "checkForValidIdentifiers",
+				OrigError: fmt.Errorf("context-key '%s' (value: '%+v') is not a valid identifier", k, v),
+			}
+		}
+	}
+	return nil
+}
+
+// Update updates this context with the key/value-pairs from another context.
+func (c Context) Update(other Context) Context {
+	for k, v := range other {
+		c[k] = v
+	}
+	return c
+}
+
+// ExecutionContext contains all data important for the current rendering state.
+//
+// If you're writing a custom tag, your tag's Execute()-function will
+// have access to the ExecutionContext. This struct stores anything
+// about the current rendering process's Context including
+// the Context provided by the user (field Public).
+// You can safely use the Private context to provide data to the user's
+// template (like a 'forloop'-information). The Shared-context is used
+// to share data between tags. All ExecutionContexts share this context.
+//
+// Please be careful when accessing the Public data.
+// PLEASE DO NOT MODIFY THE PUBLIC CONTEXT (read-only).
+//
+// To create your own execution context within tags, use the
+// NewChildExecutionContext(parent) function.
+type ExecutionContext struct {
+	template *Template
+
+	Autoescape bool
+	Public     Context
+	Private    Context
+	Shared     Context
+}
+
+var pongo2MetaContext = Context{
+	"version": Version,
+}
+
+func newExecutionContext(tpl *Template, ctx Context) *ExecutionContext {
+	privateCtx := make(Context)
+
+	// Make the pongo2-related funcs/vars available to the context
+	privateCtx["pongo2"] = pongo2MetaContext
+
+	return &ExecutionContext{
+		template: tpl,
+
+		Public:     ctx,
+		Private:    privateCtx,
+		Autoescape: autoescape,
+	}
+}
+
+func NewChildExecutionContext(parent *ExecutionContext) *ExecutionContext {
+	newctx := &ExecutionContext{
+		template: parent.template,
+
+		Public:     parent.Public,
+		Private:    make(Context),
+		Autoescape: parent.Autoescape,
+	}
+	newctx.Shared = parent.Shared
+
+	// Copy all existing private items
+	newctx.Private.Update(parent.Private)
+
+	return newctx
+}
+
+func (ctx *ExecutionContext) Error(msg string, token *Token) *Error {
+	return ctx.OrigError(errors.New(msg), token)
+}
+
+func (ctx *ExecutionContext) OrigError(err error, token *Token) *Error {
+	filename := ctx.template.name
+	var line, col int
+	if token != nil {
+		// No tokens available
+		// TODO: Add location (from where?)
+		filename = token.Filename
+		line = token.Line
+		col = token.Col
+	}
+	return &Error{
+		Template:  ctx.template,
+		Filename:  filename,
+		Line:      line,
+		Column:    col,
+		Token:     token,
+		Sender:    "execution",
+		OrigError: err,
+	}
+}
+
+func (ctx *ExecutionContext) Logf(format string, args ...interface{}) {
+	ctx.template.set.logf(format, args...)
+}