319 lines
12 KiB
Go
319 lines
12 KiB
Go
package lang
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import (
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"github.com/alecthomas/participle/v2"
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)
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// AST Root AST node containing all definitions
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type AST struct {
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Definitions []Definition `parser:"@@*"`
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}
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// Definition Union type for top-level definitions
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type Definition struct {
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Server *Server `parser:"@@"`
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Entity *Entity `parser:"| @@"`
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Endpoint *Endpoint `parser:"| @@"`
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Page *Page `parser:"| @@"`
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}
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// ConfigValue Flexible value that can be literal or environment variable
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type ConfigValue struct {
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Literal *string `parser:"@String"`
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EnvVar *EnvVar `parser:"| @@"`
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}
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// EnvVar Environment variable configuration
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type EnvVar struct {
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Name string `parser:"'env' @String"`
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Default *string `parser:"('default' @String)?"`
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Required bool `parser:"@'required'?"`
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}
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// Server Clean server syntax
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type Server struct {
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Name string `parser:"'server' @Ident"`
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Settings []ServerSetting `parser:"('{' @@* '}')?"` // Block-delimited settings for consistency
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}
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type ServerSetting struct {
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Host *ConfigValue `parser:"('host' @@)"`
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Port *IntValue `parser:"| ('port' @@)"`
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DatabaseURL *ConfigValue `parser:"| ('database_url' @@)"`
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APIKey *ConfigValue `parser:"| ('api_key' @@)"`
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SSLCert *ConfigValue `parser:"| ('ssl_cert' @@)"`
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SSLKey *ConfigValue `parser:"| ('ssl_key' @@)"`
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}
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// IntValue Similar to ConfigValue but for integers
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type IntValue struct {
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Literal *int `parser:"@Int"`
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EnvVar *EnvVar `parser:"| @@"`
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}
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// Entity Clean entity syntax with better readability
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type Entity struct {
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Name string `parser:"'entity' @Ident"`
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Description *string `parser:"('desc' @String)?"`
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Fields []Field `parser:"('{' @@* '}')?"` // Block-delimited fields for consistency
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}
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// Field Detailed field syntax
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type Field struct {
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Name string `parser:"@Ident ':'"`
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Type string `parser:"@Ident"`
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Required bool `parser:"@'required'?"`
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Unique bool `parser:"@'unique'?"`
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Index bool `parser:"@'indexed'?"`
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Default *string `parser:"('default' @String)?"`
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Validations []Validation `parser:"@@*"`
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Relationship *Relationship `parser:"@@?"`
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Endpoints []string `parser:"('endpoints' '[' @Ident (',' @Ident)* ']')?"` // with transforms this might not be needed
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Transform []Transform `parser:"@@*"`
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}
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// Transform Field transformation specification
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type Transform struct {
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Type string `parser:"'transform' @Ident"`
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Column *string `parser:"('to' @Ident)?"`
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Direction *string `parser:"('on' @('input' | 'output' | 'both'))?"`
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}
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// Validation Simple validation syntax
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type Validation struct {
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Type string `parser:"'validate' @Ident"`
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Value *string `parser:"@String?"`
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}
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// Relationship Clear relationship syntax
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type Relationship struct {
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Type string `parser:"'relates' 'to' @Ident"`
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Cardinality string `parser:"'as' @('one' | 'many')"`
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ForeignKey *string `parser:"('via' @String)?"`
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Through *string `parser:"('through' @String)?"`
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}
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// Endpoint definitions with clean, readable syntax
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type Endpoint struct {
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Method string `parser:"'endpoint' @('GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH')"`
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Path string `parser:"@String"`
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Entity *string `parser:"('for' @Ident)?"`
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Description *string `parser:"('desc' @String)?"`
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Auth bool `parser:"@'auth'?"`
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Params []EndpointParam `parser:"('{' @@*"` // Block-delimited parameters
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Response *ResponseSpec `parser:"@@?"`
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CustomLogic *string `parser:"('custom' @String)? '}')?"` // Close block after all content
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}
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// EndpointParam Clean parameter syntax
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type EndpointParam struct {
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Name string `parser:"'param' @Ident ':'"`
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Type string `parser:"@Ident"`
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Required bool `parser:"@'required'?"`
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Source string `parser:"'from' @('path' | 'query' | 'body')"`
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}
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// ResponseSpec Response specification
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type ResponseSpec struct {
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Type string `parser:"'returns' @Ident"`
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Format *string `parser:"('as' @String)?"`
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Fields []string `parser:"('fields' '[' @Ident (',' @Ident)* ']')?"`
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}
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// Page Enhanced Page definitions with unified section model
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type Page struct {
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Name string `parser:"'page' @Ident"`
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Path string `parser:"'at' @String"`
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Layout string `parser:"'layout' @Ident"`
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Title *string `parser:"('title' @String)?"`
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Description *string `parser:"('desc' @String)?"`
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Auth bool `parser:"@'auth'?"`
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Meta []MetaTag `parser:"('{' @@*"` // Block-delimited content
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Elements []PageElement `parser:"@@* '}')?"` // Unified elements allowing any order
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}
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// PageElement Unified element type for pages allowing sections and components in any order
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type PageElement struct {
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Section *Section `parser:"@@"`
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Component *Component `parser:"| @@"`
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}
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// MetaTag Meta tags for SEO
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type MetaTag struct {
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Name string `parser:"'meta' @Ident"`
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Content string `parser:"@String"`
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}
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// Section Unified Section type that replaces Container, Tab, Panel, Modal, MasterDetail
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type Section struct {
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Name string `parser:"'section' @Ident"`
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Type *string `parser:"('type' @('container' | 'tab' | 'panel' | 'modal' | 'master' | 'detail'))?"`
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Class *string `parser:"('class' @String)?"`
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Label *string `parser:"('label' @String)?"` // for tabs
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Active bool `parser:"@'active'?"` // for tabs
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Trigger *string `parser:"('trigger' @String)?"` // for panels/modals/detail
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Position *string `parser:"('position' @String)?"` // for panels
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Entity *string `parser:"('for' @Ident)?"` // for panels
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Elements []SectionElement `parser:"('{' @@* '}')?"` // Block-delimited elements for unambiguous nesting
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}
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// SectionElement New unified element type for sections
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type SectionElement struct {
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Attribute *SectionAttribute `parser:"@@"`
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Component *Component `parser:"| @@"`
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Section *Section `parser:"| @@"`
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When *WhenCondition `parser:"| @@"`
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}
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// SectionAttribute Flexible section attributes (replaces complex config types)
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type SectionAttribute struct {
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DataSource *string `parser:"('data' 'from' @String)"`
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Style *string `parser:"| ('style' @String)"`
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Classes *string `parser:"| ('classes' @String)"`
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Size *int `parser:"| ('size' @Int)"` // for pagination, etc.
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Theme *string `parser:"| ('theme' @String)"`
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}
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// Component Simplified Component with unified attributes - reordered for better parsing
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type Component struct {
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Type string `parser:"'component' @Ident"`
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Entity *string `parser:"('for' @Ident)?"`
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Elements []ComponentElement `parser:"('{' @@* '}')?"` // Parse everything inside the block
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}
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// ComponentElement Enhanced ComponentElement with recursive section support - now includes attributes
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type ComponentElement struct {
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Attribute *ComponentAttr `parser:"@@"` // Component attributes can be inside the block
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Field *ComponentField `parser:"| @@"`
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Section *Section `parser:"| @@"` // Sections can be nested in components
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Button *ComponentButton `parser:"| @@"`
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When *WhenCondition `parser:"| @@"`
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}
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// ComponentAttr Simplified component attributes using key-value pattern - reordered for precedence
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type ComponentAttr struct {
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DataSource *string `parser:"('data' 'from' @String)"`
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Fields []string `parser:"| ('fields' '[' @Ident (',' @Ident)* ']')"`
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Actions []string `parser:"| ('actions' '[' @Ident (',' @Ident)* ']')"`
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Style *string `parser:"| ('style' @String)"`
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Classes *string `parser:"| ('classes' @String)"`
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PageSize *int `parser:"| ('pagination' 'size' @Int)"`
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Validate bool `parser:"| @'validate'"`
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}
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// ComponentField Enhanced component field with detailed configuration using flexible attributes
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type ComponentField struct {
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Name string `parser:"'field' @Ident"`
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Type string `parser:"'type' @Ident"`
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Attributes []ComponentFieldAttribute `parser:"@@* ('{' @@* '}')?"` // Support both inline and block attributes
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}
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// ComponentFieldAttribute Flexible field attribute system
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type ComponentFieldAttribute struct {
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Label *string `parser:"('label' @String)"`
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Placeholder *string `parser:"| ('placeholder' @String)"`
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Required bool `parser:"| @'required'"`
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Sortable bool `parser:"| @'sortable'"`
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Searchable bool `parser:"| @'searchable'"`
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Thumbnail bool `parser:"| @'thumbnail'"`
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Default *string `parser:"| ('default' @String)"`
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Options []string `parser:"| ('options' '[' @String (',' @String)* ']')"`
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Accept *string `parser:"| ('accept' @String)"`
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Rows *int `parser:"| ('rows' @Int)"`
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Format *string `parser:"| ('format' @String)"`
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Size *string `parser:"| ('size' @String)"`
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Display *string `parser:"| ('display' @String)"`
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Value *string `parser:"| ('value' @String)"`
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Source *string `parser:"| ('source' @String)"`
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Relates *FieldRelation `parser:"| @@"`
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Validation *ComponentValidation `parser:"| @@"`
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}
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// FieldRelation Field relationship for autocomplete and select fields
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type FieldRelation struct {
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Type string `parser:"'relates' 'to' @Ident"`
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}
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// ComponentValidation Component validation
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type ComponentValidation struct {
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Type string `parser:"'validate' @Ident"`
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Value *string `parser:"@String?"`
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}
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// WhenCondition Enhanced WhenCondition with recursive support for both sections and components
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type WhenCondition struct {
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Field string `parser:"'when' @Ident"`
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Operator string `parser:"@('equals' | 'not_equals' | 'contains')"`
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Value string `parser:"@String"`
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Fields []ComponentField `parser:"('{' @@*"`
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Sections []Section `parser:"@@*"` // Can contain sections
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Components []Component `parser:"@@*"` // Can contain components
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Buttons []ComponentButton `parser:"@@* '}')?"` // Block-delimited for unambiguous nesting
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}
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// ComponentButton Simplified button with flexible attribute ordering
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type ComponentButton struct {
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Name string `parser:"'button' @Ident"`
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Label string `parser:"'label' @String"`
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Attributes []ComponentButtonAttr `parser:"@@*"`
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}
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// ComponentButtonAttr Flexible button attribute system - each attribute is a separate alternative
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type ComponentButtonAttr struct {
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Style *ComponentButtonStyle `parser:"@@"`
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Icon *ComponentButtonIcon `parser:"| @@"`
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Loading *ComponentButtonLoading `parser:"| @@"`
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Disabled *ComponentButtonDisabled `parser:"| @@"`
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Confirm *ComponentButtonConfirm `parser:"| @@"`
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Target *ComponentButtonTarget `parser:"| @@"`
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Position *ComponentButtonPosition `parser:"| @@"`
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Via *ComponentButtonVia `parser:"| @@"`
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}
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// ComponentButtonStyle Individual button attribute types
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type ComponentButtonStyle struct {
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Value string `parser:"'style' @String"`
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}
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type ComponentButtonIcon struct {
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Value string `parser:"'icon' @String"`
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}
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type ComponentButtonLoading struct {
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Value string `parser:"'loading' @String"`
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}
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type ComponentButtonDisabled struct {
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Value string `parser:"'disabled' 'when' @Ident"`
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}
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type ComponentButtonConfirm struct {
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Value string `parser:"'confirm' @String"`
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}
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type ComponentButtonTarget struct {
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Value string `parser:"'target' @Ident"`
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}
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type ComponentButtonPosition struct {
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Value string `parser:"'position' @String"`
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}
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type ComponentButtonVia struct {
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Value string `parser:"'via' @String"`
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}
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func ParseInput(input string) (AST, error) {
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parser, err := participle.Build[AST](
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participle.Unquote("String"),
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)
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if err != nil {
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return AST{}, err
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}
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ast, err := parser.ParseString("", input)
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if err != nil {
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return AST{}, err
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}
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return *ast, nil
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}
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